Exhibit 10.1
                                                                    ------------

                        SECURITIES PURCHASE AGREEMENT

      THIS SECURITIES PURCHASE AGREEMENT (the "Agreement"),  is made and entered
into as of April 19,  2004,  by and among IRIS  International,  Inc., a Delaware
corporation (the "Company"),  and the undersigned purchasers (each a "Purchaser"
and  collectively,  the  "Purchasers")  who  are  subscribing  for  shares  (the
"Shares") of common stock, par value $0.01 per share (the "Common Stock") of the
Company  and  five-year  warrants  to  purchase  shares  of  Common  Stock  (the
"Warrants"),  with an exercise price per share equal to 120% of the market price
(which shall be the average  closing price of the Company's  Common Stock on the
Nasdaq National  Market  ("Nasdaq") for a one (1) to ten (10) trading day period
prior to the Pricing Date (as defined  herein),  as more fully described in this
Agreement and as mutually  determined by the Company and the Placement Agent (as
hereinafter  defined).  A form of Warrant is  attached  hereto as Exhibit A. The
Shares and the Warrants are collectively referred to herein as the "Securities".

      NOW,  THEREFORE,  in  consideration of the mutual covenants and agreements
contained in this Agreement,  and for other good and valuable  consideration the
receipt and  adequacy of which is hereby  acknowledged,  the Company and each of
the Purchasers hereby agree as follows:

                                   ARTICLE I.
                   PURCHASE AND SALE OF SECURITIES; CLOSING

      Section 1.1  Purchase and Sale of the Securities.

            (a)  Subject to the terms and  conditions  of this  Agreement,  each
Purchaser hereby  irrevocably  subscribes for and agrees to purchase  Securities
from the Company for the  aggregate  purchase  price set forth on the  signature
page of such Purchaser hereto (the "Subscription  Amount"). The Securities to be
issued to a Purchaser  hereunder  shall consist of (i) Shares in an amount equal
to the quotient  obtained by dividing (x) the  Subscription  Amount,  by (y) the
Offering Price,  rounded down to the nearest whole number, and (ii) a Warrant to
purchase such number of shares of Common Stock to be determined based on a ratio
of three (3)  shares of Common  Stock for every  twenty  (20)  Shares  purchased
hereunder,  rounded down to the nearest  whole number.  The aggregate  amount of
Securities  to be issued  pursuant to the Offering  shall not exceed TWO MILLION
ONE HUNDRED THIRTY  THOUSAND  (2,130,000)  Shares and Warrants to purchase THREE
HUNDRED  NINETEEN  THOUSAND FIVE HUNDRED  (319,500)  shares of Common Stock. For
purposes of this  Agreement,  the  "Offering  Price" shall be FIVE AND 85/100THS
($5.85)  per  share,  which  shall  be the  price  per  Share  to be paid by the
Purchasers.  The "Aggregate Purchase Price",  representing the aggregate payment
for all of the  Securities  shall be TWELVE  MILLION FOUR HUNDRED SIXTY THOUSAND
FIVE HUNDRED  DOLLARS  ($12,460,500).  The  Purchasers  shall pay the  Aggregate
Purchase  Price for the  Securities  being  purchased by the  Purchasers by wire
transfer of immediately  available funds to an escrow account  designated by the
Company at the Bank of New York.

           (b) As soon as practicable, but no later than three (3) business days
after the date on which the Offering Price is determined  (the "Pricing  Date"),
the Company shall hold an initial closing of the Offering (the "Closing"). There
is no minimum  subscription  amount required for the Closing.  The Closing shall

                                       1


take place at the offices of Sheppard Mullin Richter & Hampton, LLP, 800 Anacapa
Street,  Santa Barbara,  California 93101 at 10:00 am,  California time, or such
other date or place  agreed to by the  parties.  In the event there is more than
one  closing,  the term  "Closing"  shall  apply  to each  such  closing  unless
otherwise specified herein.

      Section 1.2       Delivery of Securities at Closing.

           (a) Upon  satisfaction  of the  conditions  of the Closing  specified
herein,  the Company shall,  at the Closing:  (i) issue to each Purchaser  stock
certificates  representing  the shares of Common Stock purchased at such Closing
under this Agreement and (ii) issue to each Purchaser a Warrant to purchase such
number of shares of Common Stock  calculated in accordance  with Section  1.1(a)
above.

           (b) Each Purchaser  acknowledges and agrees that this Agreement shall
be binding upon such  Purchaser  upon the execution and delivery to the Company,
in care of Oppenheimer & Co. Inc. (the "Placement  Agent"),  of such Purchaser's
signed counterpart signature page to this Agreement unless and until the Company
or the Placement Agent shall reject the  subscription  being made hereby by such
Purchaser. The Company may terminate this Offering or reject any subscription at
any  time  in its  sole  discretion.  The  execution  of this  Agreement  by the
Purchaser, or solicitation of the investment contemplated hereby shall create no
obligation  on the part of the  Company  or the  Placement  Agent to accept  any
subscription or complete the Offering.

           (c)  Each  Purchaser   hereby   acknowledges   and  agrees  that  the
subscription  hereunder is  irrevocable by the  Purchaser,  and that,  except as
required by law, the  Purchaser  is not entitled to cancel,  terminate or revoke
this  Agreement or any  agreements  of the  Purchaser  hereunder and that if the
Purchaser is an individual  this Agreement shall survive the death or disability
of the  Purchaser  and shall be  binding  upon and inure to the  benefit  of the
parties  and  their  heirs,   executors,   administrators,   successors,   legal
representatives and permitted assigns.

           (d) Each Purchaser  acknowledges  that the  information  contained in
this  Agreement  is  confidential  and  non-public  and  agrees  that  all  such
information  shall  be  kept  in  confidence  by the  Purchaser.  The  Purchaser
acknowledges  that  the  foregoing  restrictions  on  the  Purchaser's  use  and
disclosure of any such  confidential,  non-public  information  contained in the
above-described  documents restricts the Purchaser from trading in the Company's
securities  to the extent such trading is on the basis of  material,  non-public
information of which the Purchaser is aware.

           (e) Each Purchaser  agrees that each of the Company and the Placement
Agent may reduce such  Purchaser's  subscription  with  respect to the number of
Securities to be purchased  without any prior notice or further  consent by such
Purchaser.  If such a  reduction  occurs,  the part of the  Subscription  Amount
attributable  to the reduction  shall be promptly  returned,  without  interest,
offset or deduction.

           (f) Each  Purchaser  acknowledges  and agrees  that the  purchase  of
Securities  by such  Purchaser  pursuant  to the  Offering is subject to all the
terms and conditions set forth in this Agreement.

                                       2


           Section  1.3  Conditions  to the  Company's  Obligation  to  Complete
Purchase and Sale. The Company's  obligation to issue and sell the Securities to
each of the Purchasers at Closing is subject to the  satisfaction,  on or before
the Closing  Date,  of each of the  following  conditions,  provided  that these
conditions  are for the Company's  sole benefit and may be waived by the Company
at any time in its sole  discretion  by  providing  the  Purchasers  with  prior
written notice thereof:

          (a) Payment of Purchase Price. The Purchasers shall have delivered the
Aggregate Purchase Price to the Company in accordance with Section 1.1; and

          (b) Representations and Warranties; Covenants. The representations and
warranties  of the  Purchasers  set forth in Article III hereof  qualified as to
materiality  shall be true and  correct at all times from the date hereof to and
on the Closing Date,  except to the extent any such  representation  or warranty
expressly  speaks as of an earlier  date, in which case such  representation  or
warranty  shall  be  true  and  correct  as  of  such  earlier  date,  and,  the
representations  and warranties of the Purchaser set forth in Article III hereof
not  qualified  as to  materiality  shall be true and  correct  in all  material
respects at all times from the date hereof to and on the Closing Date, except to
the extent any such representation or warranty expressly speaks as of an earlier
date, in which case such representation or warranty shall be true and correct in
all material  respects as of such earlier  date,  and the  Purchaser  shall have
performed,  satisfied and complied with in all material  respects the covenants,
agreements and conditions required by this Agreement to be performed,  satisfied
or complied with by the Purchasers on or prior to the Closing Date.

           Section 1.4  Conditions  to the  Purchaser's  Obligation  to Complete
Purchase and Sale. The  obligations of the Purchasers  hereunder to purchase the
Securities from the Company at the Closing is subject to the satisfaction, on or
before the Closing  Date,  of each of the  following  conditions,  provided that
these  conditions are for the Purchasers'  sole benefit and may be waived by the
Purchasers  at any time in their sole  discretion  by providing the Company with
prior written notice thereof:

           (a) Opinion of  Counsel.  Receipt by each of the  Purchasers  and the
Placement  Agent of an opinion  letter of Sheppard,  Mullin,  Richter & Hampton,
LLP, counsel to the Company,  dated the Closing Date, in substantially  the form
attached hereto as Exhibit B;

           (b)  Representations and Warranties;  Covenants.  The representations
and  warranties  of the Company set forth in Article II hereof  qualified  as to
materiality  shall be true and  correct at all times from the date hereof to and
on the Closing Date,  except to the extent any such  representation  or warranty
expressly  speaks as of an earlier  date, in which case such  representation  or
warranty  shall  be  true  and  correct  as  of  such  earlier  date,  and,  the
representations and warranties of the Company set forth in Article II hereof not
qualified as to materiality  shall be true and correct in all material  respects
at all times  from the date  hereof to and on the  Closing  Date,  except to the
extent any such  representation  or warranty  expressly  speaks as of an earlier
date, in which case such representation or warranty shall be true and correct in
all  material  respects as of such  earlier  date,  and the  Company  shall have
performed,  satisfied and complied with in all material  respects the covenants,

                                       3


agreements and conditions required by this Agreement to be performed,  satisfied
or complied with by the Company on or prior to the Closing Date;

           (c) Officer's  Certificate.  The Company shall have  delivered to the
Purchaser a certificate,  dated the Closing Date, duly executed on behalf of the
Company by its Chief Executive Officer and Chief Financial Officer to the effect
set forth in clause (b) above and clauses (e) and (f) below;

           (d) Secretary's Certificate.  The Company shall have delivered to the
Purchaser a certificate,  dated the Closing Date, duly executed by its Secretary
or Assistant  Secretary,  certifying  that the attached  copies of the Company's
certificate  of  incorporation,  bylaws  and the  resolutions  of the  Board  of
Directors  of  the  Company   approving  this  Agreement  and  the  transactions
contemplated hereby, are all true, complete and correct and remain unamended and
in full force and effect; and

           (e) No  Litigation.  On the Closing Date,  no legal  action,  suit or
proceeding  shall be pending or overtly  threatened  which  seeks to restrain or
prohibit the transactions contemplated by this Agreement.

           (f) No Stop Order.  No stop order or suspension of trading shall have
been imposed by the Nasdaq,  the U.S.  Securities and Exchange  Commission  (the
"SEC") or any other governmental  regulatory body with respect to public trading
in the Common Stock.

                                  ARTICLE II.

                REPRESENTATIONS AND WARRANTIES OF THE COMPANY

Except as set forth on the Schedule of Exceptions attached hereto as Schedule A,
the Company  hereby  represents  and warrants to each of the  Purchasers and the
Placement Agent as follows:

      Section  2.1  Subsidiaries;  Organization.  The  Company  and  each of its
wholly-owned  subsidiaries is a corporation  duly organized and validly existing
and is in good standing under the laws of the jurisdiction of its  incorporation
or organization,  and has the full corporate power and authority to own, operate
and occupy its  properties  and to conduct its business as presently  conducted.
The Company and each of its  subsidiaries  is duly  qualified  as a  corporation
qualified to do business  and in good  standing in each  jurisdiction  where the
failure to be so  qualified  has had or would  reasonably  be  expected to have,
individually  or in the  aggregate,  a  material  adverse  effect  upon  (i) the
Securities,  (ii) the ability of the Company to perform  its  obligations  under
this Agreement, or (iii) the business,  assets, financial condition,  results of
operation or prospects of the Company and the subsidiaries taken as a whole on a
consolidated  basis  (a  "Material  Adverse  Effect"),   and  to  the  Company's
knowledge,  no proceeding has been instituted in any such jurisdiction revoking,
limiting or curtailing,  or seeking to revoke, limit or curtail,  such power and
authority or qualification.

           Section  2.2  Due  Authorization.   The  Company  has  all  requisite
corporate  power and authority to execute and deliver this  Agreement,  to issue
and sell the  Shares  and the  Warrants  and to  perform  its other  obligations

                                       4


hereunder,  all of which has been duly  authorized  by all  necessary  corporate
action.  Each of this  Agreement  and the Warrant has been duly  authorized  and
validly executed and delivered by the Company and,  assuming due  authorization,
execution  and delivery by the other  parties  hereto,  constitutes  a valid and
legally  binding  obligation of the Company  enforceable  against the Company in
accordance with its terms.

           Section 2.3  Non-Contravention.  The  execution  and delivery of this
Agreement,  the  issuance  and sale of the Shares and the Warrants to be sold by
the Company under this Agreement, the issuance of the Warrant Shares (as defined
below) upon  exercise of the  Warrants,  the  performance  by the Company of its
obligations  under  this  Agreement  and the  consummation  of the  transactions
contemplated  hereby will not (A) conflict with or constitute a violation of, or
default  (with or without  the giving of notice or the  passage of time or both)
under, (i) any bond, debenture, note or other evidence of indebtedness, or under
any material lease, indenture,  mortgage,  deed of trust, loan agreement,  joint
venture or other  agreement or  instrument to which the Company is a party or by
which it or its  properties  are bound,  except where such violation or default,
individually or in the aggregate,  would not reasonably be expected to result in
a Material  Adverse Effect,  (ii) the charter,  by-laws or other  organizational
documents  of the  Company  or  any  of its  subsidiaries,  or  (iii)  any  law,
administrative  regulation,  ordinance  or  order of any  court or  governmental
agency,  arbitration  panel or authority  applicable to the Company,  any of its
subsidiaries or their  respective  properties,  or (B) result in the creation or
imposition  of any  material  lien,  encumbrance,  claim,  security  interest or
restriction  whatsoever  upon any of the  material  properties  or assets of the
Company or any of its  subsidiaries or an acceleration of indebtedness  pursuant
to any  obligation,  agreement  or condition  contained  in any  material  bond,
debenture, note or any other evidence of indebtedness or any material indenture,
mortgage,  deed of trust or any  other  agreement  or  instrument  to which  the
Company or any of its  subsidiaries is a party or by which the Company or any of
its  subsidiaries  is bound or to which  any of the  property  or  assets of the
Company or any of its subsidiaries is subject.

           Section 2.4 Consents.  No consent,  approval,  authorization or other
order of, or  registration,  qualification  or filing with, any regulatory body,
administrative agency,  self-regulatory organization,  stock exchange or market,
or other  governmental body in the United States or any third person is required
for the execution and delivery of this Agreement and the valid issuance and sale
of the Securities to be sold pursuant to this Agreement, other than such as have
been made or obtained,  and except for any post-sale securities filings required
to be made with the SEC,  the Nasdaq  and with any state or foreign  blue sky or
securities regulatory authority, which will be made when required.

           Section  2.5  Reporting  Status.  The  Company  has filed in a timely
manner all documents  that the Company was required to file under the Securities
Exchange Act of 1934, as amended (the "Exchange  Act"),  during the  twenty-four
(24)  months  preceding  the date of this  Agreement.  The  following  documents
complied as to form in all material  respects with the SEC's  requirements as of
their respective  filing dates, and the information  contained therein as of the
date thereof did not contain an untrue  statement of a material  fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not  misleading,  except to the extent that  information  contained  in any such
document  has been  revised or  superseded  by a later  filed SEC  Document  (as
defined below):

                                       5


           (a) The  Company's  Proxy  Statement  for the 2002 Annual  Meeting of
Stockholders (the "Proxy Statement");

           (b) The  Company's  Annual  Report on Form 10-K for the  fiscal  year
ended December 31, 2003 (the "Form 10-K"); and

           (c) all other documents, including the exhibits thereto, filed by the
Company  with the SEC  since  December  31,  2003 and  prior to the date  hereof
pursuant to the reporting  requirements  of the Exchange Act (together  with the
Proxy Statement and the Form 10-K, the "SEC Documents").

      Section 2.6 Capitalization.  As of the date hereof, the authorized capital
stock of the Company  consists of 53,000,000  shares of capital stock,  of which
50,000,000   shares  are  designated  Common  Stock  and  3,000,000  shares  are
designated  Preferred  Stock.  As of April 2,  2004,  there  were  approximately
12,272,272  shares of Common  Stock  issued  and  outstanding,  and no shares of
Preferred  Stock  issued and  outstanding.  As of April 2, 2004 an  aggregate of
3,053,360  shares of Common Stock were reserved for issuance under the Company's
1994 Stock Option Plan, of which 2,704,430 shares of Common Stock are subject to
outstanding,  unexercised  options as of the date  hereof.  As of April 2, 2004,
853,040  shares of Common  Stock were  reserved for  issuance  upon  exercise of
warrants issued by the Company,  excluding  warrants to be issued  hereunder and
excluding  warrants  for up to 115,000  shares of Common  Stock  issuable to the
Placement  Agent.  All outstanding  shares of Common Stock are duly  authorized,
validly issued,  fully paid and nonassessable and were issued in compliance with
federal and U.S.  state  securities  laws.  Other than as  disclosed  in the SEC
Documents in the Disclosure  Schedule,  and except as set forth above, there are
no outstanding rights,  options,  warrants,  preemptive rights,  rights of first
refusal, agreements, commitments,  participation rights, anti-dilution rights or
price  adjustment  provisions or similar  rights for the purchase or acquisition
from the Company or any of its  subsidiaries of any securities of the Company or
any of its subsidiaries.

      Section 2.7  Issuance.  The Shares and the Warrants to be sold pursuant to
this  Agreement  have  been duly  authorized,  and when  issued  and paid for in
accordance with the terms of this Agreement will be validly  issued,  fully paid
and nonassessable and free and clear of all pledges, liens and encumbrances. The
Common Stock  issuable upon exercise of the Warrants (the "Warrant  Shares") has
been duly authorized and reserved and, when issued upon exercise of the Warrants
in accordance with the terms of the Warrants, will be validly issued, fully paid
and non-assessable and free and clear of all pledges, liens and encumbrances. No
preemptive right,  co-sale right,  right of first refusal or other similar right
exists with  respect to the  Securities  or the issuance  and sale  thereof.  No
further  approval or  authorization of any stockholder or the Board of Directors
of the Company is required for the issuance and sale of the  Securities.  Except
as set forth in the SEC  Documents,  no holder of any of the  securities  of the
Company  has any  rights  ("demand,"  "piggyback"  or  otherwise)  to have  such
securities   registered  by  reason  of  the   intention  to  file,   filing  or
effectiveness of a Registration Statement (as defined in Section 5.1 hereof).

           Section  2.8  Legal  Proceedings.  Except  as  disclosed  in the  SEC
Documents and the Schedule of  Exceptions,  there is no action,  suit,  inquiry,
investigation or proceeding before or by any court,  public board,  governmental
agency, or self-regulatory organization or body (including the SEC), now pending

                                       6


or, to the  knowledge  of the  Company  or any of its  subsidiaries,  threatened
against or  affecting  the  Company,  any of its  subsidiaries,  or any of their
respective   directors  or  officers  in  their   capacities  as  such,   which,
individually  or in the  aggregate,  could  reasonably  be  expected  to  have a
Material Adverse Effect.

           Section  2.9  No  Violations.  Neither  the  Company  nor  any of its
subsidiaries  is in violation of its charter,  bylaws,  or other  organizational
document, or is in violation of any law, administrative regulation, ordinance or
order of any  court  or  governmental  agency,  arbitration  panel or  authority
applicable  to  the  Company  or  any  of  its  subsidiaries,  which  violation,
individually  or in the  aggregate,  has had or would  reasonably be expected to
have a Material Adverse Effect,  or is in default (and there exists no condition
which,  with or without the  passage of time or giving of notice or both,  would
constitute a default) in the  performance  of any bond,  debenture,  note or any
other evidence of indebtedness in any indenture,  mortgage, deed of trust or any
other  material  agreement  or  instrument  to which the  Company  or any of its
subsidiaries  is a party or by which the Company or any of its  subsidiaries  is
bound or by which the properties of the Company are bound,  which,  individually
or in the aggregate,  has had or would reasonably be expected to have a Material
Adverse Effect.

           Section  2.10  Governmental   Permits,   Etc.  The  Company  and  its
subsidiaries possess all necessary franchises,  licenses, certificates and other
authorizations  from  any  foreign,   federal,  state  or  local  government  or
governmental  agency,  department or body that are  currently  necessary for the
operation of their respective business as currently conducted, except where such
failure  to  possess  has not and  would not  reasonably  be  expected  to have,
individually or in the aggregate, a Material Adverse Effect.

           Section 2.11  Intellectual  Property.  Except as set forth in the SEC
Documents,  to the Company's knowledge,  the Company and its subsidiaries own or
have the right to use any and all information, know-how, trade secrets, patents,
copyrights,  trademarks, trade names, software, formulae, methods, processes and
other  intangible  properties that are of a such nature and  significance to the
business  that the failure to own or have the right to use such items would have
a Material  Adverse Effect  ("Intangible  Rights").  The Company  (including its
subsidiaries)  has  not  received  any  notice  that it is in  conflict  with or
infringing  upon  the  asserted   intellectual  property  rights  of  others  in
connection with the Intangible Rights, and, to the Company's knowledge,  neither
the use of the Intangible  Rights nor the operation of the Company's  businesses
is infringing or has infringed upon any intellectual  property rights of others.
All payments have been duly made that are  necessary to maintain the  Intangible
Rights in force.  No claims have been made, and to the Company's  knowledge,  no
claims are  threatened,  that  challenge  the  validity or scope of any material
Intangible Right of the Company or any of its subsidiaries. The Company and each
of its subsidiaries  have taken reasonable steps to obtain and maintain in force
all licenses and other  permissions  under  Intangible  Rights of third  parties
necessary to conduct their  businesses as heretofore  conducted by them, and now
being  conducted  by them,  and as  expected  to be  conducted,  and neither the
Company nor any of its  subsidiaries  is or has been in  material  breach of any
such license or other permission.

           Section  2.12  Financial  Statements.  Except as set forth in the SEC
Documents,  the  consolidated  financial  statements  of  the  Company  and  its
subsidiaries and the related notes thereto included in the SEC Documents present
fairly, in all material  respects,  the financial  position of the Company as of
the dates  indicated  and the results of its  operations  and cash flows for the
periods  therein  specified.  Except as set forth in such financial  statements,
such  financial  statements  (including the related notes) have been prepared in
accordance with United States generally accepted  accounting  principles applied
on a consistent basis throughout the periods therein specified.

           Section 2.13 No Material Adverse Change. Except as publicly disclosed
in the SEC Documents,  press releases or in other "public  disclosures"  as such
term is defined in Section  101(e) of Regulation  FD of the Exchange Act,  since
December 31, 2003 there has not been (i) any Material  Adverse Effect;  (ii) any

                                       7


obligation,  direct or contingent,  that is material to the Company, incurred by
the  Company or any of its  subsidiaries,  except  obligations  incurred  in the
ordinary  course of  business,  (iii) any dividend or  distribution  of any kind
declared,  paid or made on the capital stock of the Company, or (iv) any loss or
damage  (whether or not insured) to the physical  property of the Company or any
of its  subsidiaries  which  has  been  sustained  which  has  had or  would  be
reasonably expected to have a Material Adverse Effect.

           Section  2.14  Material  Agreements.  Except  as set forth in the SEC
Documents and the Schedule of Exceptions, neither the Company nor any subsidiary
is a party to any written or oral contract, instrument,  agreement,  commitment,
obligation,  plan or arrangement,  a copy of which would be required to be filed
with the SEC as an exhibit to Form 10-K  (each,  a  "Material  Agreement").  The
Company and each of its subsidiaries has in all material respects  performed all
the  obligations  required to be performed  by them to date under the  foregoing
agreements,  have received no notice of default by the Company or the subsidiary
that is a party  thereto,  as the case may be, and, to the Company's  knowledge,
are not in default  under any Material  Agreement  now in effect,  the result of
which would be reasonably expected to have a Material Adverse Effect.

           Section 2.15 Nasdaq Listing. The Company's Common Stock is registered
pursuant to Section 12(g) of the Exchange Act and is listed on the Nasdaq.

           Section 2.16 S-3 Compliance.  The Company  believes that it currently
meets  the  requirements  for the use of Form  S-3 for the  registration  of the
resale of the Shares and the Warrant Shares by the  Purchasers  and  anticipates
that it will continue to meet such requirements as of the Required Effectiveness
Date (as defined herein).

           Section 2.17 No Manipulation of Stock.  The Company has not taken and
will not, in violation of applicable  law, take, any action  designed to or that
might reasonably be expected to cause or result in stabilization or manipulation
of the price of the Common Stock to facilitate  the sale or resale of the Shares
or the Warrant Shares.

           Section  2.18 Labor,  Employment  and Benefit  Matters.  There are no
existing, or to the best of the Company's knowledge, threatened strikes or other
labor  disputes  against  the Company or any of its  subsidiaries  that would be
reasonably likely to have a Material Adverse Effect.  Except as set forth in the
SEC  Documents,  there is no  organizing  activity  involving  employees  of the
Company  or  any  of its  subsidiaries  pending  or,  to  the  Company's  or its
subsidiaries'  knowledge,  threatened  by any labor union or group of employees.

                                       8


Except as set forth in the SEC  Documents,  neither  the  Company nor any of its
subsidiaries  is, or during the five years  preceding the date of this Agreement
was, a party to any labor or  collective  bargaining  agreement and there are no
labor or  collective  bargaining  agreements  which  pertain to employees of the
Company or its  subsidiaries.  Each employee  benefit plan is in compliance with
all applicable law, except for such  noncompliance  that would not be reasonably
likely to have a Material  Adverse  Effect.  Neither  the Company nor any of its
subsidiaries has any  liabilities,  contingent or otherwise,  including  without
limitation,   liabilities  for  retiree  health,   retiree  life,  severance  or
retirement  benefits,  which are not fully reflected,  to the extent required by
general accepted accounting  principals ("GAAP"),  on the Balance Sheet or fully
funded.  None of the Company nor any of its  subsidiaries (i) has terminated any
"employee  pension benefit plan" as defined in Section 3(2) of ERISA (as defined
below) under circumstances that present a material risk of the Company or any of
its subsidiaries  incurring any liability or obligation that would be reasonably
likely to have a Material  Adverse  Effect,  or (ii) has  incurred or expects to
incur any outstanding liability under Title IV of the Employee Retirement Income
Security  Act of 1974,  as  amended  and all rules and  regulations  promulgated
thereunder ("ERISA").

           Section  2.19  Insurance.  The Company  and each of its  subsidiaries
maintains and will continue to maintain insurance against loss or damage by fire
or other  casualty  and such other  insurance,  including,  but not  limited to,
product  liability  insurance,  in such  amounts and  covering  such risks as is
reasonably  adequate  consistent with industry practice for the conduct of their
respective businesses and the value of their respective properties.

           Section  2.20 Tax Matters.  The Company and each of its  subsidiaries
has timely  filed all  material  federal,  state,  local and foreign  income and
franchise  and other tax  returns  required to be filed by any  jurisdiction  to
which it is subject and has paid all taxes due in accordance  therewith,  and no
tax  deficiency  has been  determined  adversely  to the  Company  or any of its
subsidiaries which has had (nor does the Company or any of its subsidiaries have
any  knowledge  of any tax  deficiency  which,  if  determined  adversely to the
Company or any of its  subsidiaries,  would  reasonably  be  expected to have) a
Material Adverse Effect.

           Section 2.21 Title.  Except as disclosed  in the SEC  Documents,  the
Company and its subsidiaries have good and marketable title in fee simple to all
real property and good and  marketable  title to all personal  property owned by
them that is material to the  business of the Company and its  subsidiaries,  in
each case free and clear of all liens,  encumbrances  and defects except such as
do not  materially  affect  the  value of such  property  and do not  materially
interfere  with the use made and  proposed  to be made of such  property  by the
Company and its subsidiaries.  Any real property and facilities held under lease
by the Company and its subsidiaries are held by them under valid, subsisting and
enforceable  leases  with  such  exceptions  as  are  not  material  and  do not
materially  interfere with the use made and proposed to be made of such property
and buildings by the Company and its subsidiaries.

      Section  2.22  Environmental  Matters.  To the  knowledge  of the Company,
except as disclosed in the SEC  Documents,  all real property  owned,  leased or
otherwise  operated by the Company and its subsidiaries is free of contamination
from  any  substance,  waste or  material  currently  identified  to be toxic or
hazardous  pursuant to, within the  definition of a substance  which is toxic or
hazardous under, or which may result in liability under, any  Environmental  Law
(as defined below), including, without limitation, any asbestos, polychlorinated
biphenyls,  radioactive substance,  methane,  volatile hydrocarbons,  industrial
solvents,  oil or  petroleum  or chemical  liquids or solids,  liquid or gaseous

                                       9


products, or any other material or substance  ("Hazardous  Substance") which has
or would  reasonably  be expected to cause or  constitute a health,  safety,  or
environmental  hazard to any person or property  or result in any  environmental
liabilities  that would be reasonably  likely to have a Material Adverse Effect.
Neither the Company nor any of its  subsidiaries has caused or suffered to occur
any release, spill, migration, leakage, discharge, disposal,  uncontrolled loss,
seepage, or filtration of Hazardous Substances that would reasonably be expected
to result in environmental liabilities that would be reasonably likely to have a
Material Adverse Effect. The Company and each subsidiary has generated, treated,
stored and disposed of any Hazardous  Substances in compliance  with  applicable
Environmental Laws, except for such non-compliances that would not be reasonably
likely to have a Material  Adverse  Effect.  The Company and each subsidiary has
obtained,  or has applied for, and is in  compliance  with and in good  standing
under all permits  required under  Environmental  Laws (except for such failures
that would not be  reasonably  likely to have a  Material  Adverse  Effect)  and
neither  the  Company  nor  any of its  subsidiaries  has any  knowledge  of any
proceedings to substantially  modify or to revoke any such permit.  There are no
investigations,  proceedings or litigation  pending or threatened,  affecting or
against the  Company,  any of its  subsidiaries  or any of the  Company's or its
subsidiaries' facilities relating to Environmental Laws or Hazardous Substances.
"Environmental Laws" shall mean all federal, national, state, regional and local
laws,  statutes,  ordinances  and  regulations,  in  each  case  as  amended  or
supplemented   from  time  to  time,   and  any   judicial   or   administrative
interpretation thereof,  including orders, consent decrees or judgments relating
to the regulation and protection of human health,  safety,  the  environment and
natural resources.

           Section 2.23  Investment  Company.  The Company is not an "investment
company"  within the  meaning of such term under the  Investment  Company Act of
1940 and the rules and regulations of the SEC thereunder.

           Section   2.24  No   Registration.   Assuming  the  accuracy  of  the
representations  and warranties  made by, and compliance  with the covenants of,
the Purchasers in Article III hereof,  no registration  of the Securities  under
the  Securities  Act of 1933, as amended (the  "Securities  Act") is required in
connection  with the  offer and sale of the  Securities  by the  Company  to the
Purchasers as contemplated by this Agreement.

           Section  2.25 No Directed  Selling  Efforts or General  Solicitation.
Neither the Company nor any person or entity  acting on its behalf has conducted
any "general  solicitation" or "general advertising" (as those terms are used in
Regulation D promulgated  under the Securities Act) in connection with the offer
or sale of any of the Securities.

           Section 2.26 No Integrated  Offering.  Neither the Company nor any of
its  affiliates,  nor any person or entity  acting on its or their  behalf  has,
directly  or  indirectly,  made any offers or sales of any  Company  security or
solicited  any  offers  to buy any  security,  under  circumstances  that  would
adversely  affect  reliance by the Company on Section 4(2) of the Securities Act
for the exemption from  registration for the transactions  contemplated  hereby,
would require  registration of the Securities  under the Securities Act or cause
this  offering of the  Securities to be  integrated  with any prior  offering of
securities of the company for purposes of the  Securities  Act,  which result of
integration  would require  registration of the Securities  under the Securities
Act.

                                       10


           Section 2.27 Compliance with Nasdaq Listing Requirements. The Company
is in compliance in all material respects with all currently effective continued
listing requirements and corporate governance requirements of the Nasdaq.

           Section 2.28  Questionable  Payments.  Neither the Company nor any of
its  subsidiaries  nor,  to the  Company's  knowledge,  any of their  respective
current or former directors, officers, employees, agents, stockholders owning at
least 10% of the outstanding  capital stock of the Company,  or other persons or
entities acting on behalf of the Company or any subsidiary, has on behalf of the
Company or any subsidiary or in connection with their respective businesses: (a)
used any corporate funds for unlawful  contributions,  gifts,  entertainment  or
other unlawful expenses relating to political  activity;  (b) made any direct or
indirect  unlawful  payments to any  governmental  officials or  employees  from
corporate  funds;  (c) established or maintained any unlawful or unrecorded fund
of corporate monies or other assets; (d) made any false or fictitious entries on
the books and records of the Company or any subsidiary; or (e) made any unlawful
bribe, rebate, payoff, influence payment,  kickback or other unlawful payment of
any nature.

           Section 2.29 Transactions with Affiliates. Except as set forth in the
SEC  Documents,  there  are no loans,  leases,  agreements,  contracts,  royalty
agreements,   management   contracts  or   arrangements   or  other   continuing
transactions  with aggregate  obligations of any party  exceeding SIXTY THOUSAND
DOLLARS  ($60,000)  between  (a) the  Company,  any  subsidiary  or any of their
respective  customers or  suppliers on the one hand,  and (b) on the other hand,
any person who would be covered by Item 404(a) of Regulation  S-K or any company
or other entity controlled by such person.

           Section  2.30  Internal  Controls.  The Company and the  subsidiaries
maintain  a  system  of  internal  accounting  controls  sufficient  to  provide
reasonable  assurance  that (i)  transactions  are executed in  accordance  with
management's general or specific authorizations,  (ii) transactions are recorded
as necessary to permit  preparation of financial  statements in conformity  with
generally accepted accounting  principles and to maintain asset  accountability,
(iii) access to assets is permitted only in accordance with management's general
or specific  authorization,  and (iv) the recorded  accountability for assets is
compared with the existing assets at reasonable intervals and appropriate action
is taken with respect to any differences.

           Section 2.31 Certain  Fees.  Other than fees payable to the Placement
Agent  pursuant to the  Placement  Agent  Agreement,  no  brokers',  finders' or
financial  advisory  fees or  commissions  will be payable by the Company or any
subsidiary with respect to the transactions contemplated by this Agreement.

           Section 2.32 Disclosures.  Neither the Company nor, to its knowledge,
any person or entity  acting on its behalf has provided the  Purchasers or their
counsel with any information that constitutes material,  non-public information,
except for this transaction.

      Section 2.33 Solvency.  Based on the financial condition of the Company as
of the Closing Date (and assuming that the Closing shall have occurred), (i) the
Company's  fair  saleable  value of its assets  exceeds  the amount that will be
required to be paid on or in respect of the Company's  existing  debts and other
liabilities  (including known contingent  liabilities) as they mature;  (ii) the
Company's  assets do not constitute  unreasonably  small capital to carry on its
business  for the  current  fiscal year as now  conducted  and as proposed to be
conducted including its capital needs taking into account the particular capital

                                       11


requirements  of the business  conducted by the Company,  and projected  capital
requirements and capital  availability  thereof; and (iii) the current cash flow
of the Company, together with the proceeds the Company would receive, were it to
liquidate all of its assets,  after taking into account all anticipated  uses of
the cash,  would be  sufficient  to pay all amounts on or in respect of its debt
when such amounts are required to be paid.

           Section 2.34 No Additional Agreements.  The Company does not have any
agreement or  understanding  with any Purchaser with respect to the transactions
contemplated by this Agreement other than as specified in this Agreement.


                                  ARTICLE III.
         REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PURCHASERS

      The Purchasers, severally and not jointly, represent, warrant and covenant
to the Company as follows:

           Section 3.1 Securities Law Representations and Warranties.

          (a)  Each  Purchaser  is  an  "accredited   investor"  as  defined  in
Regulation  D under the  Securities  Act and the  Purchaser  has the  knowledge,
sophistication  and  experience  necessary  to make,  and is  qualified  to make
decisions with respect to,  investments  in securities  presenting an investment
decision  like that  involved in the  purchase  of the Shares and the  Warrants,
including  investments  in securities  issued by the Company and  investments in
comparable  companies,  can  bear  the  economic  risk  of a  total  loss of its
investment in the Securities, has requested,  received,  reviewed and considered
all  information it deemed  relevant in making an informed  decision to purchase
the  Securities  and has had a reasonable  opportunity  to ask  questions of and
receive answers from  representatives of the Company or persons acting on behalf
of the Company concerning the Offering and all such questions have been answered
to the full  satisfaction of the  Purchasers;  provided,  however,  neither such
inquiries nor any other due diligence investigation conducted by the Purchasers,
or the Purchasers'  respective  counsel, or any of their  representatives  shall
modify,  amend  or  affect  the  Purchasers'  right  to  rely  on the  Company's
representations and warranties contained in Article II hereof;

           (b) Each  Purchaser  (i) is acquiring  the  Securities  and (ii) upon
exercise  of the  Warrants  held by it, will  acquire  the  Warrant  Shares then
issuable upon exercise  thereof for its own account for investment  only and not
with a view  towards,  or for resale in  connection  with,  the  public  sale or
distribution  thereof in any circumstance  that could cause the Offering and the
sale of the Shares and the Warrants hereunder to not be exempt from registration
pursuant to Section 4(2) of the Securities Act;

          (c) Each  Purchaser  was not  organized  for the  specific  purpose of
acquiring the Securities;

           (d) Each Purchaser will not,  directly or  indirectly,  offer,  sell,
pledge, transfer or otherwise dispose of (or solicit any offers to buy, purchase
or  otherwise  acquire  or take a pledge  of) any of the  Securities  except  in
compliance with the Securities  Act,  applicable  state  securities laws and the
respective rules and regulations promulgated thereunder;

                                       12


           (e) Each Purchaser  understands that the Securities are being offered
and  sold  to it in  reliance  on  specific  exemptions  from  the  registration
requirements of the United States federal and state securities laws and that the
Company  is  relying  upon  the  truth  and  accuracy  of,  and the  Purchaser's
compliance with, representations,  warranties, agreements,  acknowledgements and
understandings  of the Purchaser set forth herein and in the applicable  Warrant
in order to determine the availability of such exemptions and the eligibility of
the Purchaser to acquire the Securities;

           (f) Each Purchaser understands that no United States federal or state
agency or any other government or governmental  agency has passed on or made any
recommendation  or  endorsement of the Securities or the fairness or suitability
of an  investment in the  Securities  nor have such  authorities  passed upon or
endorsed the merits of the offering of the Securities; and

           (g) Each Purchaser acknowledges that the Company has represented that
no  action  has been or will be taken in any  jurisdiction  outside  the  United
States by the  Company  that would  permit an  offering  of the  Securities,  or
possession or distribution of offering materials in connection with the issue of
the Securities,  in any jurisdiction  outside the United States where action for
that purpose is required.  If the Purchaser is located or domiciled  outside the
United States it agrees to comply with all  applicable  laws and  regulations in
each  foreign  jurisdiction  in which it  purchases,  offers,  sells or delivers
Securities or has in its possession or distributes any offering material, in all
cases at its own expense.

           Section 3.2 Legends.

           (a) Each  Purchaser  understands  that,  until the end of the holding
period under Rule 144(k) of the Securities Act (or any successor  provision) the
Warrant  (and all  securities  issued in exchange  therefor  or in  substitution
thereof,  other than  Warrant  Shares,  which shall bear the legend set forth in
Section  3.2(b)  of this  Agreement,  if  applicable)  shall  bear a  legend  in
substantially the following form:

           THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
           SECURITIES  ACT OF  1933,  AS  AMENDED,  (THE  "SECURITIES  ACT")  OR
           APPLICABLE  STATE  SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED
           FOR SALE, SOLD, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED IN THE
           ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT  FOR THE  SECURITIES
           UNDER THE SECURITIES ACT, OR IRIS INTERNATIONAL, INC. (THE "COMPANY")
           SHALL HAVE RECEIVED AN OPINION FROM COUNSEL  REASONABLY  SATISFACTORY
           TO THE  COMPANY  THAT  REGISTRATION  OF  SUCH  SECURITIES  UNDER  THE
           SECURITIES  ACT AND UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND
           STATE SECURITIES LAWS IS NOT REQUIRED.

                                       13


      The legend set forth above shall be removed and the Company  shall issue a
new certificate  evidencing a new Warrant of like tenor and aggregate  number of
shares and which shall not bear the restrictive legends required by this Section
3.2(a): (i) if, in connection with a sale transaction,  such holder provides the
Company with an opinion of counsel  reasonably  acceptable to the Company to the
effect  that  a  public  sale,   assignment  or  transfer  of  the  Warrant,  as
appropriate,  may be made without registration under the Securities Act, or (ii)
upon  expiration  of the  two-year  holding  period  under  Rule  144(k)  of the
Securities Act (or any successor  rule);  provided that the Purchaser is not and
has not been within 3 months prior to such date, an  "affiliate"  of the Company
(as such term is defined in Rule 144 of the Securities Act) (in which event such
holding  period shall be deemed to have expired when such Purchaser has not been
an "affiliate" of the Company for the preceding three-month period). The Company
shall not require such opinion of counsel for the sale of Warrants in accordance
with Rule 144 of the  Securities  Act in the event that the  Purchaser  provides
such  representations  that the  Company  shall  reasonably  request  confirming
compliance with the requirements of Rule 144.

           (b)  Subject  to the  terms  of  this  clause  (b),  any  certificate
representing  the Shares or Warrant Shares shall bear a legend in  substantially
the following form:

           THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
           SECURITIES  ACT OF  1933,  AS  AMENDED,  (THE  "SECURITIES  ACT")  OR
           APPLICABLE  STATE  SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED
           FOR SALE, SOLD, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED IN THE
           ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT  FOR THE  SECURITIES
           UNDER THE SECURITIES ACT, OR IRIS INTERNATIONAL, INC. (THE "COMPANY")
           SHALL HAVE RECEIVED AN OPINION FROM COUNSEL  REASONABLY  SATISFACTORY
           TO THE  COMPANY  THAT  REGISTRATION  OF  SUCH  SECURITIES  UNDER  THE
           SECURITIES  ACT AND UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND
           STATE SECURITIES LAWS IS NOT REQUIRED.

      The legend set forth  above shall be removed  and the  Company's  transfer
agent shall issue the Shares or the Warrant Shares, as applicable,  without such
legend to the holder of the Shares or Warrant  Shares  upon which it is stamped,
as applicable (i) if the Shares or the Warrant Shares, as applicable,  have been
resold or transferred  pursuant to the  Registration  Statement  contemplated by
Section  5 and the  Registration  Statement  was  effective  at the time of such
transfer,  (ii) if, in connection with a sale transaction,  such holder provides
the Company with an opinion of counsel  reasonably  acceptable to the Company to
the effect that a public sale,  assignment or transfer of the Shares and Warrant
Shares,  as applicable,  may be made without  registration  under the Securities
Act, or (iii) upon  expiration of the applicable  two-year  holding period under
Rule 144(k) of the  Securities  Act (or any successor  rule);  provided that the
Purchaser  is not and has not  been  within  3 months  prior  to such  date,  an
"affiliate"  of the  Company  (as  such  term  is  defined  in  Rule  144 of the
Securities  Act) (in which  event such  holding  period  shall be deemed to have
expired when such  Purchaser has not been an  "affiliate" of the Company for the

                                       14


]preceding  three-month  period).  The Company shall not require such opinion of
counsel for the sale of the Shares or the Warrant Shares in accordance with Rule
144  of  the   Securities   Act,   provided   that  the  Seller   provides  such
representations that the Company shall reasonably request confirming  compliance
with the  requirements of Rule 144. The Company shall  irrevocably  instruct its
transfer  agent that,  upon  presentation  to the transfer  agent of a completed
Certificate  of Subsequent  Sale in the form  attached  hereto as Exhibit E, the
transfer agent shall thereupon  re-issue a stock  certificate  representing  the
number of shares sold without the legend set forth above.

           (c) Each  Purchaser  understands  that,  in the event Rule  144(k) as
promulgated  under the  Securities  Act (or any  successor  rule) is  amended to
change the two-year period under Rule 144(k) (or the corresponding  period under
any  successor  rule),  (i) each  reference  in Sections  3.2(a) and (b) of this
Agreement to "two (2) years" or the  "two-year  period"  shall be deemed for all
purposes of this Agreement to be references to such changed period, and (ii) all
corresponding  references in the Securities  shall be deemed for all purposes to
be references to the changed period, provided that such changes shall not become
effective  if they are  otherwise  prohibited  by,  or would  otherwise  cause a
violation  of,  the  then-applicable  federal  securities  laws.  The  Purchaser
acknowledges  that, with respect to the Warrant Shares, the two (2) year holding
period  referred  to in Section  3.3(b)  shall  commence on the date the related
Warrant is exercised.

      Section 3.3 Authorization;  Enforcement; Validity. Each Purchaser has full
right,  power,  authority  and  capacity  to enter  into this  Agreement  and to
consummate  the  transactions  contemplated  hereby and has taken all  necessary
action to authorize the execution,  delivery and  performance of this Agreement.
This  Agreement  constitutes  a valid and binding  obligation  of the  Purchaser
enforceable against the Purchaser in accordance with its terms.

      Section 3.4 Certain  Trading  Limitations.  Each  Purchaser (i) represents
that on and from the date the  Purchaser  first  became aware of the offering of
the Shares and the Warrants until the date hereof he, she or it has not and (ii)
covenants  that for the period  commencing on the date hereof and ending at such
time that the  Company  publicly  announces  the  offering of the Shares and the
Warrants  he, she or it will not,  engage in any  hedging  or other  transaction
which is designed to or could reasonably be expected to lead to or result in, or
be characterized  as, a sale, an offer to sell, a solicitation of offers to buy,
disposition   of,   loan,   pledge  or  grant  of  any  right  with  respect  to
(collectively, a "Disposition") Common Stock of the Company by such Purchaser or
any other person or entity in violation of the Securities  Act. Such  prohibited
hedging or other  transactions  would include without  limitation  effecting any
short sale or having in effect any short  position  (whether or not such sale or
position is against the box and  regardless  of when such  position  was entered
into) or any purchase,  sale or grant of any right (including without limitation
any put or call  option) with respect to the Common Stock of the Company or with
respect to any security  (other than a broad-based  market basket or index) that
includes,  relates  to or  derives  any  significant  part of its value from the
Common Stock of the Company.

           Section 3.5 No Sale of Securities.  Each Purchaser  hereby  covenants
with the Company not to make any sale of the  Securities  without (i)  complying
with the  provisions  of this  Agreement,  including  Section 5.3 hereof or (ii)
without  satisfying  the  requirements  of the  Securities Act and the rules and
regulations promulgated thereunder,  including, without limitation,  causing the

                                       15


prospectus  delivery  requirement  under the Securities Act to be satisfied,  if
applicable.  Each Purchaser  acknowledges  that there may  occasionally be times
when the Company,  based on the advice of its counsel,  determines that, subject
to the  limitations  of Section 5.3, it must  suspend the use of the  prospectus
forming a part of the Registration  Statement until such time as an amendment to
the Registration  Statement has been filed by the Company and declared effective
by the SEC or until the Company has amended or supplemented such prospectus.

           Section 3.6 Registration Questionnaire.  Each Purchaser has completed
or caused to be completed  the  Registration  Questionnaire  attached  hereto as
Exhibit C and on the signature page for use in  preparation of the  Registration
Statement and the answers to the  Questionnaire  and on such  signature page are
true and correct in all material  respects as of the date of this  Agreement and
will be true and correct as of the effective date of the Registration Statement;
provided that such  Purchaser  shall be entitled to update such  information  by
providing  written  notice thereof to the Company prior to the effective date of
the Registration Statement.

           Section 3.7  Purchaser  Suitability  Questionnaire.  The  information
contained in the  Purchaser  Suitability  Questionnaire  in the form attached as
Exhibit D delivered  by each  Purchaser  in  connection  with this  Agreement is
complete and accurate in all respects.

           Section 3.8 No Advice.  Each  Purchaser  understands  that nothing in
this Agreement or any other materials  presented to such Purchaser in connection
with  the  purchase  and  sale  of  the  Securities  constitutes  legal,  tax or
investment  advice.  Each Purchaser has consulted such legal, tax and investment
advisors as it, in its sole  discretion,  has deemed necessary or appropriate in
connection with its purchase of the Securities.

                                  ARTICLE IV.
                                  COVENANTS

           Section 4.1  Listing of Shares.  The  Company  shall  comply with all
requirements  of the Nasdaq with respect to the issuance of the  Securities  and
the listing of the Shares and the Warrant Shares.  In furtherance  thereof,  the
Company shall use its  commercially  reasonable  efforts to take such actions as
may be necessary as soon as practicable  after the Closing Date to file with the
Nasdaq an  application  or other  document  required  by the  Nasdaq and pay all
applicable  fees for the listing of the Shares and the  Warrant  Shares with the
Nasdaq.  The Company  knows of no reason why the Shares and Warrant  Shares will
not be eligible for listing on the Nasdaq.

           Section  4.2 Form D. The  Company  agrees to file one or more Forms D
with respect to the Securities on a timely basis as required under  Regulation D
under  the  Securities  Act to  claim  the  exemption  provided  by Rule  506 of
Regulation D.

           Section 4.3 Form 8-K.  Within two (2)  business  days  following  the
Closing,  the Company  shall,  by filing a Current  Report on Form 8-K and/or by
issuance of a press  release,  disclose  such  Closing of the  Offering  and any
material,  non-public  information  disclosed to the  Purchasers  in  connection
therewith.

                                       16


           Section 4.4 Certain  Future  Financings  and Related  Actions.  For a
period of ninety (90) days after the date the Registration Statement is declared
effective by the SEC,  the Company  shall not offer,  sell,  contract to sell or
issue (or engage any person to assist the Company in taking any such action) any
equity securities or securities convertible into,  exchangeable for or otherwise
entitling  the holder to acquire,  any Common  Stock;  provided,  however,  that
nothing in this Section 4.4 shall  prohibit the Company from issuing  securities
(1) to employees, directors, officers, advisors or consultants of the Company or
any of its subsidiaries; (2) upon exercise of conversion,  exchange, purchase or
similar rights issued, granted or given by the Company and outstanding as of the
date of this Agreement;  or (3) pursuant to a strategic  partnership or alliance
agreement,  loan  agreement,  equipment  lease or similar  commercial  agreement
(including licensing and similar arrangements).

           Section 4.5  Stand-Off.  Except as  disclosed  in Section 4.4 hereof,
until the later of (i) one hundred  eighty (180) days  following the Closing and
(ii) forty-five (45) days following effectiveness of the Registration Statement,
the  Company  shall  not file or cause  any  registration  statement  to  become
effective,  other than the Registration  Statement  contemplated  hereby, or any
registration  statement related to securities issued or to be issued pursuant to
any option or other plan for the benefit of the Company's  employees,  officers,
directors or consultants.

           Section 4.6 Lock-Up. Prior to the Closing, each executive officer and
director of the Company  shall have  entered into a lock-up  agreement  with the
Placement Agent in the form attached hereto as Exhibit F.

           Section 4.7 Trading Limitations.  The Purchaser agrees that beginning
on the date hereof until thirty (30) days after the Closing Date,  the Purchaser
will not enter into any Short Sales. For purposes of the foregoing  sentence,  a
"Short  Sale" by a  Purchaser  means a sale of Common  Stock that is marked as a
short sale and that is executed at a time when such  Purchaser has no equivalent
offsetting  long  position in the Common  Stock,  exclusive  of the Shares.  For
purposes of determining  whether a Purchaser has an equivalent  offsetting  long
position  in the Common  Stock,  all Common  Stock that would be  issuable  upon
exercise in full of all options then held by such Purchaser  (assuming that such
options  were then fully  exercisable,  notwithstanding  any  provisions  to the
contrary,  and giving effect to any exercise price adjustments scheduled to take
effect in the future) shall be deemed to be held long by such Purchaser.

           Section 4.8  Sarbanes-Oxley Act of 2002. The Company is, and will be,
at all times during the period the Company must  maintain  effectiveness  of the
Registration  Statement as provided  herein,  in compliance  with all applicable
provisions  of the  Sarbanes-Oxley  Act of 2002 and all  rules  and  regulations
promulgated thereunder or implementing the provisions thereof that are in effect
and  will  take  commercially  reasonable  steps  to  ensure  that it will be in
compliance with other applicable  provisions of the  Sarbanes-Oxley  Act of 2002
not currently in effect upon the effectiveness of such provisions.



                                       17




                                   ARTICLE V.
          REGISTRATION OF SHARES; COMPLIANCE WITH THE SECURITIES ACT

           Section 5.1 Registration Procedures and Expenses. The Company shall:

          (a) Subject to receipt of necessary  information  from the Purchasers,
use  commercial  best  efforts to prepare and file with the SEC,  within 30 days
after the Pricing Date, a registration statement (the "Registration  Statement")
on Form S-3  (or,  if Form S-3 is not then  available  to the  Company,  on such
appropriate  form as is then  available  to the Company) to enable the resale of
the Registrable  Shares by the Purchasers on a delayed or continuous basis under
Rule 415 of the Securities  Act.  "Registrable  Shares" means (a) each Share and
(b) each  Warrant  Share  until the earlier of: (1) the date on which such share
has been resold or otherwise transferred pursuant to the Registration Statement;
(2) the date on which  such share is  transferred  in  compliance  with Rule 144
under the  Securities  Act or may be sold or  transferred  pursuant  to Rule 144
under the Securities Act (or any other similar provisions then in force) without
any volume or manner of sale restrictions  thereunder;  or (3) the date on which
such  share  ceases  to be  outstanding  (whether  as a  result  of  redemption,
repurchase  and  cancellation  or  otherwise).   Prior  to  the  filing  of  the
Registration Statement, the Company will provide to each Purchaser a copy of the
"Selling  Shareholder" section for their review, and if no comments are received
within  three  (3) days of  delivery  of this  section,  then it will be  deemed
approved.

           (b) use  commercial  best  efforts,  subject to receipt of  necessary
information   from  the  Purchasers,   including  the   Registration   Statement
Questionnaire, to cause the Registration Statement to become effective within 90
days of the Pricing Date;

          (c) use commercial  best efforts to prepare and file with the SEC such
amendments and supplements to the Registration  Statement and the Prospectus (as
defined in Section 5.4 below)  used in  connection  therewith  and take all such
other actions as may be necessary to keep the Registration Statement current and
effective for a period (the "Registration  Period") not exceeding,  with respect
to the Purchaser's Registrable Shares, the earlier of (i) the second anniversary
of the Closing Date (provided,  however, that with respect to Registrable Shares
that are Warrant Shares,  the foregoing date shall be the second  anniversary of
the  date the  related  Warrant  was  exercised),  (ii)  the  date on which  all
Registrable  Shares then held by the  Purchaser  may be sold or  transferred  in
compliance  with  Rule  144  under  the  Securities  Act (or any  other  similar
provisions  then in force)  without  any  volume or manner of sale  restrictions
thereunder,  and (iii) such time as all Registrable Shares held by the Purchaser
have been sold (A)  pursuant to a  registration  statement,  (B) to or through a
broker or dealer or underwriter in a public  distribution or a public securities
transaction, or (C) in a transaction exempt from the registration and prospectus
delivery  requirements  of the Securities Act under Section 4(1) thereof so that
all transfer  restrictions and restrictive legends with respect thereto, if any,
are removed upon the consummation of such sale;

           (d) promptly furnish to the Purchaser with respect to the Registrable
Shares  registered  under the Registration  Statement such reasonable  number of
copies of the Registration  Statement and Prospectus,  including any supplements
to or  amendments  of the  Prospectus  or  Registration  Statement,  in order to

                                       18


facilitate the public sale or other disposition of all or any of the Registrable
Shares by the Purchaser;

           (e)  promptly  take such action as may be  necessary  to qualify,  or
obtain,  an  exemption  for the  Registrable  Shares  under  such  of the  state
securities laws of United States jurisdictions as shall be necessary to qualify,
or  obtain  an  exemption  for,  the sale of the  Registrable  Shares  in states
specified in writing by the Purchaser; provided, however, that the Company shall
not be  required  to qualify to do  business or consent to service of process in
any  jurisdiction  in which it is not now so qualified or has not so  consented;

          (f) bear all expenses in connection  with the  procedures in paragraph
(a) through  (c) of this  Section 5.1 and the  registration  of the  Registrable
Shares  pursuant  to  the  Registration  Statement,   regardless  of  whether  a
Registration Statement becomes effective,  including without limitation: (i) all
registration  and filing  fees and  expenses  (including  filings  made with the
NASD);  (ii) fees and expenses of compliance  with federal  securities and state
"blue sky" or securities  laws; (iii) expenses of printing  (including  printing
certificates for the Registrable Shares and Prospectuses);  (iv) all application
and filing fees in connection with listing the Registrable Shares on the Nasdaq;
and (v) all fees and  disbursements  of counsel of the Company  and  independent
certified public accountants of the Company and the fees and  disbursements,  up
to an aggregate of $10,000,  for the Purchasers'  respective counsel;  provided,
however,  that the Purchaser  shall be responsible  for paying the  underwriting
commissions  or  brokerage  fees,  and  taxes  of any kind  (including,  without
limitation,  transfer taxes) applicable to any disposition,  sale or transfer of
the Purchaser's  Registrable  Shares.  The Company shall, in any event, bear its
internal expenses (including,  without limitation,  all salaries and expenses of
its officers and employees performing legal or accounting duties); and

          (g) advise the Purchasers, within two (2) business days by e-mail, fax
or other type of communication,  and, if requested by such person,  confirm such
advice in writing:  (i) after it shall receive notice or obtain knowledge of the
issuance of any stop order by the SEC delaying or suspending  the  effectiveness
of the  Registration  Statement or of the initiation or threat of any proceeding
for that purpose,  or any other order issued by any state securities  commission
or other  regulatory  authority  suspending the  qualification or exemption from
qualification  of such  Registrable  Shares under state securities or "blue sky"
laws;  and it will  promptly use its best efforts to prevent the issuance of any
stop order or other order or to obtain its  withdrawal at the earliest  possible
moment if such stop order or other  order  should be  issued;  and (ii) when the
Prospectus  or any  supplements  to or amendments  of the  Prospectus  have been
filed,  and, with respect to the  Registration  Statement or any  post-effective
amendment thereto, when the same has become effective.

           Section 5.2 Delay in  Effectiveness of Registration  Statement.  Upon
the  occurrence  of any Event (as  defined  below),  as  partial  relief for the
damages  suffered  therefrom  by  the  Purchasers  (which  remedy  shall  not be
exclusive of any other  remedies  which are  available at law or in equity;  and
provided  further that the Purchasers  shall be entitled to pursue an action for
specific performance of the Company's obligations under Section 5.1(c) above and
any such actions at law, in equity, for specific  performance or otherwise shall
not  require  the  Purchaser  to post a bond),  the  Company  shall  pay to each
Purchaser,  as liquidated damages and not as a penalty, such amounts and at such

                                       19


times as shall be  determined  pursuant to this Section 5.2. For such  purposes,
each of the following shall constitute an "Event":

           (i) the filing of the  Registration  Statement  with the SEC does not
occur on or prior to the 30th day  following the Pricing Date, in which case the
Company  shall pay on the 31st day  following the Pricing Date an amount in cash
equal to One and One-Half Percent (1.5%) of the aggregate purchase price paid by
such Purchaser and at the end of each 30-day period thereafter;

            (ii) the  Registration  Statement  is not  declared  effective on or
prior  to the  date  that is 90 days  after  the  Pricing  Date  (the  "Required
Effectiveness  Date"),  in which case the Company  shall pay on the calendar day
following  the  Required  Effectiveness  Date an amount in cash equal to One and
One-Half  Percent (1.5%) of the aggregate  purchase price paid by such Purchaser
and at the end of each 30-day period thereafter; or

           (iii) if the Registration Statement is suspended for more than thirty
(30) days, the Company shall pay, on the calendar day following the first thirty
(30) days of  suspension,  an amount in cash equal to One and  One-Half  Percent
(1.5%) of the  aggregate  price  paid by such  Purchaser  and at the end of each
30-day  period  thereafter  until the  suspension  has been  terminated  and the
Registration Statement is again effective.

      The payment  obligations  of the Company  under this  Section 5.2 shall be
cumulative.

           Section 5.3 Transfer of Shares; Suspension.

           (a) The Purchaser  agrees that it will not effect any  Disposition of
the  Securities  or its right to  purchase  the  Registrable  Shares  that would
constitute  a  sale  within  the  meaning  of  the  Securities  Act,  except  as
contemplated  in the  Registration  Statement  referred  to in Section 5.1 or in
accordance with the Securities Act, and that it will promptly notify the Company
of any  changes  in the  information  set  forth in the  Registration  Statement
regarding the Purchaser or its plan of distribution.

           (b) Except in the event that  clause (c) below  applies,  the Company
shall,  at all times during the  Registration  Period,  promptly (i) prepare and
file  from  time  to  time  with  the  SEC a  post-effective  amendment  to  the
Registration Statement or a supplement to the related Prospectus or a supplement
or amendment to any document incorporated therein by reference or file any other
required document so that such Registration Statement will not contain an untrue
statement of a material fact or omit to state a material fact  necessary to make
the statements therein not misleading,  and so that, as thereafter  delivered to
purchasers of the Registrable Shares being sold thereunder, such Prospectus will
not contain an untrue  statement of a material  fact or omit to state a material
fact required to be stated therein or necessary to make the statements  therein,
in light of the circumstances  under which they were made, not misleading;  (ii)
provide  the  Purchaser  copies  of any  documents  filed  pursuant  to  Section
5.3(b)(i); and (iii) inform the Purchaser that the Company has complied with its
obligations  in  Section  5.3(b)(i)  (or  that,  if  the  Company  has  filed  a
post-effective  amendment to the  Registration  Statement which has not yet been
declared  effective,  the Company will notify the Purchaser to that effect, will
use its  commercially  reasonable  efforts to secure the  effectiveness  of such

                                       20


post-effective  amendment as promptly as possible and will  promptly  notify the
Purchaser  pursuant to Section  5.3(b)(iii) hereof when the amendment has become
effective).

            (c) Subject to clause (d) below,  in the event of (i) any request by
the SEC or any other federal or state  governmental  authority during the period
of effectiveness of the Registration  Statement for amendments or supplements to
a Registration  Statement or related  Prospectus or for additional  information;
(ii)  the  issuance  by the  SEC or any  other  federal  or  state  governmental
authority  of any stop order  suspending  the  effectiveness  of a  Registration
Statement or the  initiation  of any  proceedings  for that  purpose;  (iii) the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from  qualification of any of the Registrable  Shares
for sale in any  jurisdiction or the initiation or threatening of any proceeding
for such  purpose;  or (iv) any event or  circumstance  which  necessitates  the
making of any  changes  in the  Registration  Statement  or  Prospectus,  or any
document  incorporated  or deemed to be  incorporated  therein by reference,  so
that, in the case of the Registration  Statement, it will not contain any untrue
statement  of a material  fact or omit to state a material  fact  required to be
stated therein or necessary to make the statements  therein not misleading,  and
that in the case of the Prospectus,  it will not contain any untrue statement of
a  material  fact  or omit  to  state a  material  fact  necessary  to make  the
statements  therein,  in the light of the  circumstances  under  which they were
made, not misleading,  then the Company shall deliver a notice in writing to the
Purchaser  (the  "Suspension  Notice") to the effect of the foregoing  and, upon
receipt of such Suspension  Notice,  the Purchaser will refrain from selling any
Registrable Shares pursuant to the Registration Statement (a "Suspension") until
the  Purchaser's  receipt  of copies of a  supplemented  or  amended  Prospectus
prepared  and filed by the  Company,  or until it is  advised  in writing by the
Company that the current Prospectus may be used. In the event of any Suspension,
the Company will use its commercially  reasonable  efforts,  consistent with the
best  interests  of the  Company and its  stockholders,  to cause the use of the
Prospectus  so suspended to be resumed as soon as reasonably  practicable  after
the delivery of a Suspension Notice to the Purchaser;  provided,  however,  that
the Company may suspend  sales  pursuant  to the  Registration  Statement  for a
period of up to thirty (30) days if the Company  furnishes to the holders of the
Registrable Shares a certificate signed by the Company's Chief Executive Officer
stating that in the good faith judgment of the Company's Board of Directors, (i)
the  offering  would  interfere in any  material  respect with any  acquisition,
corporate  reorganization or other material  transaction under  consideration by
the  Company or (ii) there is some other  material  development  relating to the
condition (financial or other) of the Company that has not been disclosed to the
general  public and as to which it is in the  Company's  best  interests  not to
disclose such development;  provided further,  however, that the Company may not
so suspend sales more than once in any calendar year without the written consent
of the holders of at least a majority of the  then-eligible  Registrable  Shares
consisting of outstanding shares of Common Stock.

           (d) In the event of a sale of  Registrable  Shares  by the  Purchaser
under  the  Registration  Statement,  the  Purchaser  must also  deliver  to the
Company's  transfer  agent,  with  a copy  to  the  Company,  a  Certificate  of
Subsequent Sale  substantially in the form attached hereto as Exhibit E, so that
the Registrable Shares may be properly transferred.

                                       21


           Section 5.4 Indemnification. For the purpose of this Section 5.4, the
term "Registration Statement" shall include any preliminary or final prospectus,
exhibit,  supplement  or amendment  included in or relating to the  Registration
Statement  referred to in Section 5.1 and the term "Rules and Regulations" means
the rules and regulations promulgated under the Securities Act.

          (a)  Indemnification  by the Company.  The Company agrees to indemnify
and hold  harmless  the  Purchaser  and each  person,  if any,  who controls the
Purchaser within the meaning of the Securities Act, against any losses,  claims,
damages,  liabilities  or expenses to which the  Purchaser  or such  controlling
person may become  subject,  under the Securities  Act, the Exchange Act, or any
other  federal or state  statutory  law or  regulation  insofar as such  losses,
claims,  damages,  liabilities  or expenses  (or  actions in respect  thereof as
contemplated  below) arise out of or are based upon (i) any untrue  statement or
alleged  untrue  statement of any material  fact  contained in the  Registration
Statement, including the Prospectus, financial statements and schedules, and all
other documents filed as a part thereof, as amended at the time of effectiveness
of the  Registration  Statement,  including any information  deemed to be a part
thereof as of the time of effectiveness  pursuant to paragraph (b) of Rule 430A,
or pursuant to Rule 434 of the Rules and Regulations,  or the Prospectus, in the
form first filed with the Commission pursuant to Rule 424(b) of the Regulations,
or filed as part of the  Registration  Statement at the time of effectiveness if
no Rule 424(b)  filing is  required  (the  "Prospectus"),  or any  amendment  or
supplement thereto (ii) the omission or alleged omission to state in any of them
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements in any of them (in the case of the  Prospectus  only, in light of the
circumstances  under  which  they  were  made),  not  misleading,  or (iii)  any
inaccuracy in the  representations  and  warranties of the Company  contained in
this Agreement,  or any failure of the Company to perform its obligations  under
this  Agreement,  and will  reimburse the  Purchaser  and each such  controlling
person for any legal and other expenses as such expenses are reasonably incurred
by the Purchaser or such  controlling  person in connection with  investigating,
defending,  settling,  compromising  or paying  any such  loss,  claim,  damage,
liability,  expense or action;  provided,  however, that the Company will not be
liable  in any  such  case to the  extent  that any such  loss,  claim,  damage,
liability or expense  arises out of or is based upon (i) an untrue  statement or
alleged  untrue   statement  or  omission  or  alleged   omission  made  in  the
Registration  Statement,  the  Prospectus  or any amendment or supplement of the
Registration  Statement or Prospectus  in reliance  upon and in conformity  with
written  information  furnished to the Company by or on behalf of the  Purchaser
expressly for use in the Registration  Statement or the Prospectus,  or (ii) the
failure of the Purchaser to comply with the covenants and  agreements  contained
in Sections 3.5 or 5.3 of this Agreement  respecting  resale of  Securities,  or
(iii)  the  inaccuracy  of any  representations  made by the  Purchaser  in this
Agreement  or (iv) any untrue  statement  or omission of a material  fact in any
Prospectus that is corrected in any subsequent  Prospectus that was delivered to
the Purchaser before the pertinent sale or sales by the Purchaser.

          (b) Indemnification by the Purchaser. The Purchaser will indemnify and
hold harmless the Company, each of its directors,  each of its officers who sign
the  Registration  Statement  and each person,  if any, who controls the Company
within the meaning of the Securities Act, against any losses,  claims,  damages,
liabilities or expenses to which the Company, each of its directors, each of its
officers who sign the  Registration  Statement or controlling  person may become
subject,  under the  Securities  Act, the Exchange  Act, or any other federal or
state  statutory  law or  regulation  insofar as such losses,  claims,  damages,

                                       22


liabilities or expenses (or actions in respect  thereof as  contemplated  below)
arise out of or are based upon (i) any failure on the part of the  Purchaser  to
comply with the  covenants  and  agreements  contained in Sections 3.5 or 5.3 of
this  Agreement  respecting  the  sale of the  Registrable  Shares  or (ii)  the
inaccuracy  of any  representation  or warranty  made by the  Purchaser  in this
Agreement or (iii) any untrue or alleged  untrue  statement of any material fact
contained in the  Registration  Statement,  the Prospectus,  or any amendment or
supplement  to the  Registration  Statement  or  Prospectus,  or the omission or
alleged  omission to state therein a material fact required to be stated therein
or necessary to make the statements therein (in the case of the Prospectus only,
in light of the  circumstances  under which they were made), not misleading,  in
each case to the extent,  but only to the extent,  that such untrue statement or
alleged  untrue  statement  or  omission  or  alleged  omission  was made in the
Registration Statement, the Prospectus,  or any amendment or supplement thereto,
in reliance upon and in  conformity  with written  information  furnished to the
Company by or on behalf of the Purchasers  expressly for use therein;  provided,
however,  that the Purchaser  shall not be liable for any such untrue or alleged
untrue  statement  or omission or alleged  omission of which the  Purchaser  has
delivered to the Company in writing a correction at least five (5) business days
before the occurrence of the transaction from which such loss was incurred,  and
the Purchaser  will reimburse the Company,  each of its  directors,  each of its
officers who signed the  Registration  Statement or  controlling  person for any
legal  and  other  expense  reasonably  incurred  by the  Company,  each  of its
directors,  each of its  officers  who  signed  the  Registration  Statement  or
controlling  person  in  connection  with  investigating,  defending,  settling,
compromising  or paying  any such loss,  claim,  damage,  liability,  expense or
action for which such person is entitled to be  indemnified  in accordance  with
this Section  5.4(b).  In no event shall the liability of any selling  Purchaser
hereunder  be  greater  in amount  than the  dollar  amount of the net  proceeds
received by such Purchaser upon the sale of the  Registrable  Shares giving rise
to such indemnification obligation.

          (c) Indemnification Procedure.

           (i) Promptly after receipt by an indemnified party under this Section
5.4 of notice of the threat or  commencement  of any  action,  such  indemnified
party will, if a claim in respect  thereof is to be made against an indemnifying
party under this Section 5.4, promptly notify the indemnifying  party in writing
of the claim;  but the  omission  so to notify the  indemnifying  party will not
relieve it from any  liability  which it may have to any  indemnified  party for
contribution  or  otherwise  under the  indemnity  agreement  contained  in this
Section 5.4 except to the extent it is materially prejudiced as a result of such
failure.

           (ii) In case any such action is brought against any indemnified party
and  such  indemnified  party  seeks  or  intends  to  seek  indemnity  from  an
indemnifying  party, the indemnifying  party will be entitled to participate in,
and, to the extent that it may wish, jointly with all other indemnifying parties
similarly  notified,  to assume the defense thereof;  provided,  however, if the
defendants  in any such  action  include  both  the  indemnified  party  and the
indemnifying  party and the indemnified  party shall have  reasonably  concluded
that there may be a conflict between the positions of the indemnifying party and
the indemnified party in conducting the defense of any such action or that there
may be legal  defenses  available  to it or other  indemnified  parties that are
different from or additional to those available to the  indemnifying  party, the
indemnified  party or parties shall have the right to select separate counsel to
assume such legal  defenses and to otherwise  participate in the defense of such
action on behalf of such  indemnified  party or parties.  Upon receipt of notice

                                       23


from the  indemnifying  party to such  indemnified  party of its  election so to
assume the defense of such action,  the indemnifying party will not be liable to
such  indemnified  party under this Section 5.4 for any legal or other  expenses
subsequently  incurred by such indemnified  party in connection with the defense
thereof unless:

           (1) the  indemnified  party  shall  have  employed  such  counsel  in
connection  with the assumption of legal defenses in accordance with the proviso
to the preceding sentence (it being understood,  however,  that the indemnifying
party shall not be liable for the  expenses of more than one  separate  counsel,
approved by such indemnifying party representing all of the indemnified  parties
who are parties to such action), or

           (2)  the  indemnifying   party  shall  not  have  counsel  reasonably
satisfactory to the indemnified  party to represent the indemnified party within
a reasonable time after notice of commencement of action, in each of which cases
the  reasonable  fees and  expenses  of counsel  shall be at the  expense of the
indemnifying party. Notwithstanding the provisions of this Section 5.4, (A) with
respect to claims made pursuant to clause (i) or clause (ii) of Section  5.4(b),
the Purchaser shall not be liable for any indemnification  obligation under this
Agreement in excess of the amount of net proceeds received by the Purchaser from
the sale of the Registrable  Shares and (B) with respect to claims made pursuant
to clause (iii) of Section  5.4(b),  the  Purchaser  shall not be liable for any
indemnification  obligation  under this Agreement in excess of the amount of net
proceeds  received  by the  Purchaser  from the sale of the  Registrable  Shares
giving rise to such liability.

          (d) Contribution.  If a claim for  indemnification  under this Section
5.4 is  unavailable  to an  indemnified  party (by  reason  of public  policy or
otherwise),   then  each  indemnifying  party,  in  lieu  of  indemnifying  such
indemnified  party,  shall  contribute  to the  amount  paid or  payable by such
indemnified  party as a result of any losses,  claims,  damages,  liabilities or
expenses referred to in this Agreement,  in such proportion as is appropriate to
reflect the relative fault of the  indemnifying  party and indemnified  party in
connection  with the  actions,  statements  or omissions  that  resulted in such
losses, claims,  damages,  liabilities or expenses as well as any other relevant
equitable  considerations.  The relative  fault of such  indemnifying  party and
indemnified  party shall be  determined  by reference  to,  among other  things,
whether any action in question, including any untrue or alleged untrue statement
of a material fact or omission or alleged  omission of a material fact, has been
taken or made by, or relates to information supplied by, such indemnifying party
or indemnified  party, and the parties'  relative intent,  knowledge,  access to
information  and  opportunity  to correct or prevent such  action,  statement or
omission.  The  amount  paid or  payable  by a party as a result of any  losses,
claims, damages,  liabilities or expenses shall be deemed to include, subject to
the  limitations  set forth in this Section 5.4, any  reasonable  attorneys'  or
other reasonable fees or expenses  incurred by such party in connection with any
proceeding to the extent such party would have been indemnified for such fees or
expenses if the  indemnification  provided for in this Section was  available to
such party in accordance with its terms.

      The  parties  hereto  agree  that it would  not be just and  equitable  if
contribution pursuant to this Section 5.4 were determined by pro rata allocation
or by any  other  method of  allocation  that  does not take  into  account  the

                                       24


equitable  considerations  referred to in the immediately  preceding  paragraph.
Notwithstanding  the  provisions of this Section 5.4, (A) with respect to claims
made  pursuant to clause (i) or clause  (ii) of Section  5.4(b),  the  Purchaser
shall not be  liable to  contribute  any  amount in excess of the  amount of net
proceeds  received by the Purchaser from the sale of the Registrable  Shares and
(B) with respect to claims made pursuant to clause (iii) of Section 5.4(b),  the
Purchaser  shall not be liable to contribute  any amount in excess of the amount
of net  proceeds  received  by the  Purchaser  from the sale of the  Registrable
Shares  giving  rise to such  liability,  less  any  other  damages  paid by the
Purchasers in respect of any such material omission or misstatement.

      No party to this Agreement guilty of fraudulent  misrepresentation (within
the  meaning of  Section  11(f) of the  Securities  Act)  shall be  entitled  to
contribution  from any other party to this  Agreement who was not guilty of such
fraudulent misrepresentation.

           Section 5.5 No  Piggy-Back on  Registrations.  Except as described in
the Schedule of Exceptions,  neither the Company nor any of its security holders
(other than the Purchasers and the Placement  Agent,  with respect to the shares
of  Common  Stock  issuable  upon the  exercise  of the  Warrant  issued  to the
Placement  Agent in connection with the Offering,  in such  capacities  pursuant
hereto) may include  securities  of the  Company in the  Registration  Statement
other than the  Registrable  Shares,  and the  Company  shall not after the date
hereof  enter into any  agreement  providing  any such right with respect to the
Registration Statement to any of its security holders.

      Section  5.6  Piggy-Back   Registrations.   If  at  any  time  during  the
Registration Period, there is not an effective  Registration  Statement covering
all of the  Registrable  Shares and the Company  shall  determine to prepare and
file with the SEC a registration  statement  relating to an offering for its own
account or the account of others under the  Securities  Act of any of its equity
securities,  other than on Form S-4 or Form S-8 (each as  promulgated  under the
Securities Act) or their then  equivalents  relating to equity  securities to be
issued solely in connection  with any  acquisition  of any entity or business or
equity  securities  issuable in connection  with stock option or other  employee
benefit plans,  then the Company shall send to each Purchaser  written notice of
such  determination  and if,  within  fifteen  (15) days  after  receipt of such
notice,  any such  Purchaser  shall so request in  writing,  the  Company  shall
include  in such  registration  statement  all or any  part of such  Registrable
Shares not already covered by an effective Registration Statement such Purchaser
requests to be registered.

           Section  5.7   Termination   of  Conditions  and   Obligations.   The
restrictions imposed by Article III or Article V upon the transferability of the
Registrable  Shares shall cease and terminate as to any particular number of the
Registrable  Shares  upon  the  passage  of two  years  from the  Closing  Date,
provided,  however,  that with  respect to the  Registrable  Shares that are the
Warrant Shares,  the foregoing date shall be the second  anniversary of the date
the  relevant  Warrant was  exercised,  or at such time as an opinion of counsel
satisfactory  in form and  substance to the Company  shall have been rendered to
the effect that such  conditions  are not  necessary in order to comply with the
Securities Act.

                                       25


           Section 5.8 Rule 144. For a period  commencing on the date hereof and
ending on the last day of the Registration  Period, the Company agrees with each
holder of Registrable Shares to:

           (a) comply with the  requirements of Rule 144(c) under the Securities
Act with respect to current public information about the Company; and

           (b) file  with the SEC in a  timely  manner  all  reports  and  other
documents  required of the Company under the Securities Act and the Exchange Act
(at any time it is subject to such reporting requirements).

                                  ARTICLE VI.
                                MISCELLANEOUS

           Section 6.1  Notices.  Except as  specifically  permitted  by Section
5.1(g), all notices, requests, consents and other communications hereunder shall
be in  writing,  shall be mailed  (A) if  within  United  States by  first-class
registered or certified  airmail,  or nationally  recognized  overnight  express
courier,  postage prepaid, or by facsimile, or (B) if delivered from outside the
United  States,  by  International  Federal  Express or facsimile,  and shall be
deemed given (i) if  delivered  by  first-class  registered  or  certified  mail
domestic,  three  (3)  business  days  after so  mailed,  (ii) if  delivered  by
nationally recognized overnight carrier, one business day after so mailed, (iii)
if delivered by International  Federal  Express,  two (2) business days after so
mailed,  and (iv) if delivered  by  facsimile,  upon  electric  confirmation  of
receipt, and shall be delivered as addressed as follows:

           if to the Company, to:
           ---------------------

                        IRIS International, Inc.
                        9172 Eton Avenue
                        Chatsworth, CA 91311
                        Telephone:  818-709-1244
                        Fax:  818-700-9661
                        Attention: Cesar Garcia, President and Chief Executive
                         Officer

           with a copy to:
           --------------

                        Sheppard Mullin Richter & Hampton, LLP
                        800 Anacapa Street
                        Santa Barbara, CA 93101
                        Attn:  Joseph E. Nida, Esq.
                        Telephone:  (805) 879-1811
                        Fax:  (805) 568-1955

            if to the Purchaser, at its address on the signature page hereto, or
at such other address or addresses as may have been  furnished to the Company in
writing.

                                       26


           Section 6.2 Changes;  Waiver.  This  Agreement may not be modified or
amended except  pursuant to an instrument in writing signed by the Company and a
majority in interest of the  Purchasers.  Failure of the Company to exercise any
right or remedy under this Agreement or any other agreement  between the Company
and the  Purchasers,  or otherwise,  or delay by the Company in exercising  such
right or remedy,  will not operate as a waiver thereof. No waiver by the Company
will be effective unless and until it is in writing and signed by the Company.

           Section 6.3  Headings.  The headings of the various  sections of this
Agreement have been inserted for  convenience of reference only and shall not be
deemed to be part of this Agreement.

           Section 6.4  Severability.  In case any  provision  contained in this
Agreement  should be  invalid,  illegal or  unenforceable  in any  respect,  the
validity,  legality and  enforceability  of the remaining  provisions  contained
herein shall not in any way be affected or impaired thereby.

           Section 6.5 Survival of  Representations,  Warranties and Agreements.
Notwithstanding  any  investigation  made by any  party to this  Agreement,  all
covenants,  agreements,  representations  and warranties made by the Company and
the Purchaser herein shall survive the execution of this Agreement, the delivery
to the Purchaser of the Securities being purchased and the payment therefor.

           Section 6.6 Governing  Law Consent to  Jurisdiction.  This  Agreement
shall be governed by, and construed in accordance with, the internal laws of the
State of New York,  without giving effect to the principles of conflicts of law.
Each of the parties hereto irrevocably submits to the exclusive  jurisdiction of
the courts of the State of New York  located  in New York  County and the United
States  District Court for the Southern  District of New York for the purpose of
any suit,  action,  proceeding  or  judgment  relating to or arising out of this
Agreement  and the  transactions  contemplated  hereby.  Service  of  process in
connection with any such suit,  action or proceeding may be served on each party
hereto anywhere in the world by the same methods as are specified for the giving
of notices under this Agreement. Each of the parties hereto irrevocably consents
to the jurisdiction of any such court in any such suit, action or proceeding and
to the laying of venue in such court. Each party hereto  irrevocably  waives any
objection to the laying of venue of any such suit, action or proceeding  brought
in such courts and  irrevocably  waives any claim that any such suit,  action or
proceeding brought in any such court has been brought in an inconvenient forum.

           Section 6.7 Entire Agreement.  This Agreement and the Warrant and the
documents  referenced  herein and therein  constitute the entire agreement among
the parties hereto with respect to the subject matter hereof and thereof.  There
are no restrictions,  promises, warranties or undertakings, other than those set
forth or  referred  to herein  and  therein.  This  Agreement  and the  Warrants
supersede all prior agreements and understandings.

           Section 6.8 Finders Fees.  Neither the Company nor the Purchasers nor
any  affiliate  thereof has  incurred  any  obligation  which will result in the
obligation  of the  other  party  to pay  any  finder's  fee  or  commission  in
connection with this transaction,  except for fees payable by the Company to the
Oppenheimer & Co. Inc.

                                       27


           Section 6.9  Counterparts.  This  Agreement may be executed in two or
more counterparts, each of which shall constitute an original, but all of which,
when taken  together,  shall  constitute  but one  instrument,  and shall become
effective  when one or more  counterparts  have been signed by each party hereto
and delivered to the other party.

      Section 6.10  Successors and Assigns.  This  Agreement  shall inure to the
benefit  of  and  be  binding  upon  the   successors,   heirs,   executors  and
administrators  and  permitted  assigns of the parties  hereto.  With respect to
transfers that are not made pursuant to the Registration  Statement (or Rule 144
but are otherwise made in accordance  with all applicable  laws and the terms of
this  Agreement),  the  rights  and  obligations  of the  Purchaser  under  this
Agreement shall be automatically  assigned by the Purchaser to any transferee of
all or any portion of the Purchaser's Securities; provided, however, that within
two (2) business days prior to the transfer, (i) the Company is provided written
notice of the transfer  including the name and address of the transferee and the
number  of  Securities  transferred;  and (ii) that  such  transferee  agrees in
writing to be bound by the terms of this Agreement as if such transferee was the
Purchaser.  Upon any transfer  permitted by this Section 6.10, the Company shall
be  obligated  to such  transferee  to perform all of its  covenants  under this
Agreement as if such transferee was the Purchaser.

           Section 6.11 Expenses.  Each of the Company and the Purchasers  shall
bear its own expenses in connection  with the preparation and negotiation of the
Agreement.

           Section   6.12   Acknowledgement.   Each  party  to  this   Agreement
acknowledges  that Brown  Raysman  Millstein  Felder & Steiner  LLP  represented
Oppenheimer  & Co. Inc. in the offering and sale of Securities  contemplated  by
this Agreement and has not represented either the Company or the Purchaser.  The
Purchaser  acknowledges  that  Sheppard,  Mullin,  Richter  &  Hampton  LLP  has
represented  the Company in this  offering  and sale of  securities  and not the
Placement Agent or the Purchaser.

           Section  6.13  Independent  Nature  of  Purchasers'  Obligations  and
Rights.  The  obligations of each Purchaser under this Agreement are several and
not joint with the obligations of any other Purchaser, and no Purchaser shall be
responsible  in any way for the  performance  of the  obligations  of any  other
Purchaser  under this  Agreement.  The  decision of each  Purchaser  to purchase
Securities   pursuant  to  this  Agreement  has  been  made  by  such  Purchaser
independently  of any  other  Purchaser.  Nothing  contained  herein  or in this
Agreement,  and no action  taken by any  Purchaser  pursuant  thereto,  shall be
deemed to constitute the Purchasers as a partnership,  an  association,  a joint
venture or any other kind of entity, or create a presumption that the Purchasers
are in any way acting in concert or as a group with respect to such  obligations
or the transactions  contemplated by this Agreement. Each Purchaser acknowledges
that no other Purchaser has acted as agent for such Purchaser in connection with
making its investment hereunder and that no Purchaser will be acting as agent of
such Purchaser in connection with monitoring its investment in the Securities or
enforcing its rights under this  Agreement.  Each Purchaser shall be entitled to
independently  protect and enforce its rights,  including without limitation the
rights  arising out of this  Agreement,  and it shall not be  necessary  for any
other  Purchaser to be joined as an additional  party in any proceeding for such
purpose.  The Company acknowledges that each of the Purchasers has been provided
with this  Agreement  for the  purpose of closing a  transaction  with  multiple

                                       28


Purchasers  and  not  because  it  was  required  or  requested  to do so by any
Purchaser.

           Section 6.14 Limitation of Liability. Notwithstanding anything herein
to the contrary,  the Company  acknowledges and agrees that the liability of any
Purchaser arising directly or indirectly,  under this Agreement of any and every
nature whatsoever shall be satisfied solely out of the assets of such Purchaser,
and that no trustee, officer, other investment vehicle or any other Affiliate of
such  Purchaser or any investor,  shareholder  or holder of shares of beneficial
interest of such a Purchaser  shall be personally  liable for any liabilities of
such Purchaser.

           Section  6.15  Signature.  The  signature  page of this  Agreement is
contained as part of the applicable  subscription  package,  entitled "Signature
Page".


                                * * * * * * *



                                       29




                                SIGNATURE PAGE

      The Purchaser  hereby  subscribes for such number of Shares as shall equal
the Subscription  Amount as set forth below,  divided by the Offering Price, and
shall also  receive a Warrant to purchase  such number of shares of Common Stock
calculated as set forth in this  Agreement,  and agrees to be bound by the terms
and conditions of this Agreement.

PURCHASER

1. Dated: _____________, 2004

2.    Total Subscription Amount:  $__________

- ------------------------------            ------------------------------
Signature of Subscriber                   Signature of Joint Purchaser
(and title, if applicable)                      (if any)

- ------------------------------            ------------------------------
Taxpayer Identification or Social         Taxpayer Identification or Social
Security Number                           Security Number of Joint Purchaser
                                          (if any)

- ------------------------------
Name (please print as name will appear
on stock certificate)

- ------------------------------
Number and Street

- ------------------------------
City, State            Zip Code


ACCEPTED BY:

IRIS INTERNATIONAL, INC.



By:
      ------------------------
      Name:
      Title:


Dated:
       -----------------------------





                                       30





                                   Schedule A
                           Company Disclosure Schedule

 (Capitalized  terms used herein shall have the meanings  ascribed to such terms
in the Securities Purchase Agreement)

           Section 2.6 The participants in the Company's  October,  2003 private
placement have participation rights in this Offering.

           Section  2.8 There are  pending  two  lawsuits  involving  two former
employees  of the  Company.  The  Company  has  insurance  for each suit and the
company is being defended by counsel selected by the insurance carrier.

           Section 2.14 The Company is in the process of completing an agreement
with its  distributor  ARKRAY in Japan,  but  there are no  assurances  that the
Agreement will be concluded.





                                       1




                                    Exhibit A
                                Form of Warrant

THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"), OR APPLICABLE STATE SECURITIES
LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD,  TRANSFERRED,  ASSIGNED,
PLEDGED OR  HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT
FOR THE SECURITIES  UNDER THE SECURITIES ACT, OR IRIS  INTERNATIONAL,  INC. (THE
"COMPANY") SHALL HAVE RECEIVED AN OPINION FROM COUNSEL  REASONABLY  SATISFACTORY
TO THE COMPANY THAT REGISTRATION OF SUCH SECURITIES UNDER THE SECURITIES ACT AND
UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND STATE  SECURITIES  LAWS IS NOT
REQUIRED.

                            IRIS INTERNATIONAL, INC.

REDEEMABLE WARRANT TO PURCHASE __________ SHARES OF COMMON STOCK

Warrant No.:__________

Date of Issuance:  April __, 2004

Iris  International,  Inc.,  a  Delaware  corporation  (the  "Company"),  hereby
certifies that, for good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged,  ____________, the registered holder hereof or
its permitted assigns, is entitled,  subject to the terms and conditions of this
Warrant and of that certain Securities Purchase Agreement, dated April ___, 2004
by and between the  Company  and the holder (as such  agreement  may be amended,
supplemented  and modified  from time to time,  the  "Purchase  Agreement"),  to
purchase from the Company,  upon surrender of this Warrant (as defined below) at
its  principal  office  in the  United  States  located  at  9172  Eton  Avenue,
Chatsworth,  California  91311 (or such other location as the Company may advise
the holder hereof in writing), at any time or times on or after the date hereof,
but not after 5:00 p.m.,  Eastern  Standard  Time,  on the  Expiration  Date (as
defined below),  ______________  fully paid nonassessable shares of Common Stock
(as defined  below) of the Company at the Exercise  Price per share  provided in
Section 1 of this  Warrant,  such  Exercise  Price and such  number of shares of
Common  Stock to be  delivered  upon  exercise of the Warrant  being  subject to
adjustment as provided in Section 9 of this Warrant.  This Warrant is redeemable
by the Company in accordance  with the terms and conditions set forth in Section
4 of this Warrant.  Capitalized terms used herein but not defined shall have the
same meanings assigned to them in the Purchase Agreement.

Section 1.  Definitions.  The following terms as used in this Warrant shall have
the following meanings:

"Business Day" means any day other than  Saturday,  Sunday or other day on which
commercial banks in the City of New York, New York are required by law to remain
closed.

                                       1


"Common  Stock" means (i) the common  stock,  par value $0.01 per share,  of the
Company, and (ii) any capital stock into which such Common Stock shall have been
changed or any capital stock  resulting from a  reclassification  of such Common
Stock.

"Exchange  Act" means the  Securities  Exchange Act of 1934,  as amended and the
rules and regulations promulgated thereunder.

"Exercise  Delivery  Documents" shall have the meaning specified in Section 2(a)
hereof.

"Exercise  Price"  shall be equal to $_____,  subject to further  adjustment  as
hereinafter provided.

"Expiration  Date"  means  April  __,  2009 or,  if such date does not fall on a
Business Day, then the next Business Day.

 "Person" means an individual,  a limited liability  company,  a partnership,  a
joint  venture,  a  corporation,  a trust,  an  unincorporated  organization  or
association and a government or any department or agency thereof.

"Principal Market" means the Nasdaq National Market ("Nasdsaq") or if the Common
Stock is not traded on the Nasdaq,  the then  principal  securities  exchange or
trading market for the Common Stock.

"Securities Act" means the Securities Act of 1933, as amended, and the rules and
regulations promulgated thereunder.

"Trading  Day"  shall mean (x) a day on which the  Principal  Market is open for
business  or (y) if the  applicable  security  is not so listed  on a  Principal
Market or admitted for trading or quotation, a Business Day.

"Trading Price" of a security on any date of determination means:

      (1) the closing sales price as reported by the Nasdaq  National  Market on
      such date;

      (2) if such security is not so reported, the closing sale price (or, if no
      closing  sale price is  reported,  the last  reported  sale price) of such
      security (regular way) on the New York Stock Exchange on such date;

      (3) if such  security  is not  listed  for  trading  on the New York Stock
      Exchange  on any such date,  the  closing  sale price as  reported  in the
      composite transactions for the principal U.S. securities exchange on which
      such security is so listed;

      (4)  if  such  security  is not  listed  on a U.S.  national  or  regional
      securities exchange, the last price quoted by Interactive Data Corporation
      for such security on such date or, if Interactive  Data Corporation is not
      quoting such price, a similar quotation service selected by the Company;

                                       2


      (5) if such security is not so quoted, the average of the mid-point of the
      last bid and ask prices for such  security  on such date from at least two
      dealers  recognized as  market-makers  for such  security  selected by the
      Company for this purpose; or

      (6) if such  security  is not so quoted,  the average of that last bid and
      ask prices  for such  security  on such date from a dealer  engaged in the
      trading  of  convertible  securities  selected  by the  Company  for  this
      purpose.

"Transfer Agent" has the meaning specified in Section 2(a) hereof.

"Warrant" means this Warrant and the other warrants to purchase shares of Common
Stock issued  pursuant to the  Purchase  Agreement  and all  warrants  issued in
exchange, transfer or replacement thereof.

"Warrant Date" has the meaning specified in Section 3 hereof.

"Warrant  Shares" means all shares of Common Stock issuable upon exercise of the
Warrants.

      The definition of certain other terms are specified in Section 9 hereof.

Section 2. Exercise of Warrant.

      (a)  Subject  to the  terms  and  conditions  hereof,  including,  without
limitation,  Section  2(c),  this Warrant may be exercised by the holder  hereof
then registered as such on the books of the Company, in whole or in part, at any
time on any  Business  Day on or after the date  hereof  and prior to 5:00 p.m.,
Eastern  Standard  Time,  on the  Expiration  Date by: (i) delivery of a written
notice, in the form of the subscription notice attached as Exhibit A hereto or a
reasonable  facsimile  thereof (the "Exercise  Notice"),  to the Company and the
Company's  designated  transfer agent (the "Transfer  Agent"),  of such holder's
election to exercise  all or a portion of this  Warrant;  (ii) the  surrender of
this Warrant to the  Company;  and (iii) the payment of the  aggregate  Exercise
Price to the Company by wire transfer or by certified  bank check payable to the
order of the  Company  in  United  States  dollars  (the  items to be  delivered
pursuant to clauses  (i),  (ii) and (iii)  above  collectively  are  referred to
herein as the " Exercise Delivery Documents");  provided,  however, that if such
Warrant  Shares are to be issued in any name  other than that of the  registered
holder  of this  Warrant,  such  issuance  shall be  deemed a  transfer  and the
provisions of Section 8 of this Warrant shall be applicable. In the event of any
exercise  of the rights  represented  by this  Warrant in  compliance  with this
Section 2(a) and Section 2(c), the Company shall, within three (3) Business Days
after  receipt of the  Exercise  Delivery  Documents,  issue and  deliver to the
address  specified in the Exercise Notice, a certificate or certificates in such
denominations  as may  be  requested  by the  holder  in  the  Exercise  Notice,
registered in the name of the holder or its  designee,  for the number of shares
of Common Stock to which the holder shall be entitled upon such  exercise.  Upon
delivery of the Exercise Delivery Documents, the holder of this Warrant shall be
deemed for all  corporate  purposes  to have  become the holder of record of the
Warrant  Shares  with  respect  to  which  this  Warrant  has  been   exercised,
irrespective  of the date of delivery the  certificates  evidencing such Warrant
Shares.

                                       3


      (b) Unless the rights  represented  by this Warrant  shall have expired or
shall have been fully  exercised,  the Company shall,  within three (3) Business
Days after receipt of the Exercise Delivery  Documents,  and at its own expense,
issue a new Warrant  identical in all respects to this Warrant  exercised except
it shall represent  rights to purchase the number of Warrant Shares  purchasable
immediately  prior to such  exercise  under  this  Warrant,  less the  number of
Warrant Shares with respect to which this Warrant is exercised.

      (c)  Notwithstanding  anything  contained in this Warrant to the contrary,
this Warrant cannot be exercised, either in whole or in part, except by a holder
who,  at the time of  exercise,  is an  "accredited  investor,"  as such term is
defined in Rule 501(a) of Regulation D under the Securities Act.

      (d)  Notwithstanding  anything  contained in this Warrant to the contrary,
the Company  shall not be required to issue  fractions of shares of Common Stock
upon  exercise of this Warrant or to  distribute  certificates  evidencing  such
fractional  shares.  If more than one Warrant shall be presented for exercise in
full at the same time by the same  holder,  the number of full  shares of Common
Stock shall be issuable upon the exercise thereof shall be computed on the basis
of the aggregate number of shares of Common Stock purchasable on exercise of all
Warrants so presented.  In lieu of any fractional shares, there shall be paid to
the holder an amount of cash equal to the same  fraction of the  current  market
value of a share of Common Stock. For purposes of this Section 2(d), the current
market value of a share of Common Stock shall be the Trading Price of a share of
Common Stock for the Trading Day immediately prior to the date of such exercise.

      (e) The holder may utilize a Cashless Exercise,  as provided below, if the
Holder's Warrant Shares are not subject to an effective Registration  Statement.
The holder,  upon a Cashless  Exercise of the  Warrant,  will  receive upon such
exercise the "Net Number" of shares of Common Stock as  determined  according to
the following formula (a "Cashless Exercise"):

                  X     =     Y x (A - B)
                              -----------
                                     A

            For purposes of the foregoing formula:

      X = the Net Number of shares of Common Stock to be issued to the Holder.

      Y = the number of shares of Common Stock subject to this Warrant for which
the Warrant is being exercised.

      A = the Current Market Value of one share of Common Stock on the date this
Warrant is being exercised.

      B = the Exercise Price then in effect for the applicable Warrant Shares at
the time of such exercise, as adjusted.

                                       4


      (f) If by the third Trading Day after a Date of Exercise the Company fails
to deliver the required number of Warrant Shares in the manner required pursuant
to  Section 2, then the holder  will have the right to  rescind  such  exercise.

      (g) If by the third Trading Day after a Date of Exercise the Company fails
to deliver the required number of Warrant Shares in the manner required pursuant
to Section 2, and if after such third  Trading  Day and prior to the  receipt of
such Warrant  Shares,  the holder  purchases (in an open market  transaction  or
otherwise)  shares of Common Stock to deliver in  satisfaction  of a sale by the
holder of the Warrant  Shares which the holder  anticipated  receiving upon such
exercise (a "Buy-In"),  then the Company shall (1) pay in cash to the holder the
amount by which (x) the  holder's  total  purchase  price  (including  brokerage
commissions, if any) for the shares of Common Stock so purchased exceeds (y) the
amount obtained by multiplying (A) the number of Warrant Shares that the Company
was required to deliver to the holder in  connection  with the exercise at issue
by (B) the closing bid price of the Common  Stock at the time of the  obligation
giving  rise to such  purchase  obligation  and (2) at the option of the holder,
either  reinstate  the portion of the Warrant and  equivalent  number of Warrant
Shares  for which  such  exercise  was not  honored or deliver to the holder the
number of shares of Common  Stock that would  have been  issued had the  Company
timely complied with its exercise and delivery obligations hereunder. The holder
shall provide the Company  written notice  indicating the amounts payable to the
holder in respect of the Buy-In.

Section 3. Date; Duration. The issue date of this Warrant is April __, 2004 (the
"Warrant  Date").  This Warrant,  in all events,  shall be wholly void and of no
effect at 5:00 pm Eastern Standard Time on the Expiration Date.

Section  4.  Redemption.  This  Warrant  may be  redeemed  at the  option of the
Company,  at a redemption price of $0.10 per share of Common Stock issuable upon
exercise of the Warrant (the  "Redemption  Price"),  at any time after the first
anniversary of the Closing Date,  provided that the Trading Price for the Common
Stock, as reported by the Principal Market,  shall have equaled or exceeded 175%
of the then current  Exercise  Price (a  "Qualifying  Price") for any 20 Trading
Days in any 30  Trading  Day  period (a  "Qualifying  Period")  ending  within 5
Trading Days of the Notice of Redemption (as defined  below),  provided  further
that (i) all of the shares of Common  Stock  issuable  hereunder  either (A) are
registered  for resale  pursuant  to an  effective  Registration  Statement  (as
defined in the Purchase  Agreement)  which is available for sales of such shares
of Common  Stock at all  times  commencing  on the  first day of the  Qualifying
Period and ending on the redemption date or (B) no longer constitute Registrable
Shares (as defined in the Purchase Agreement) and (ii) the average daily trading
volume of the Common  Stock  during  Qualifying  Period is greater  than 100,000
shares per day as reported by the  Principal  Market.  In the event the Exercise
Price is adjusted  pursuant to Section 9 hereof,  the Redemption  Price shall be
subject to adjustment by the same percentage  change as the percentage change in
the Exercise  Price.  Holders  shall be given notice of  redemption  ("Notice of
Redemption")  at least 30 days  prior to the date  fixed for  redemption  of the
Warrant. Each Notice of Redemption shall state:

      (i) the redemption date;

                                       5


      (ii) the date by which the redemption right must be exercised;

      (iii) the Redemption Price;

      (iv) a  description  of the  procedure  which a holder of the Warrant must
follow to  exercise  a  redemption  right,  and the place or places  where  such
Warrants are to be surrendered for payment of the Redemption Price;

      (v) that on the redemption  date the Redemption  Price will become due and
payable upon each such Warrant designated by the holder to be repurchased; and

      (vi) the place or places that the Warrant certificate shall be delivered.

On and  after  the  date  fixed  for  redemption  set  forth  in the  Notice  of
Redemption,  the holder of this Warrant shall have no rights with respect to the
Warrants except, upon surrender of this Warrant, to receive the Redemption Price
for each share of Common Stock  issuable  upon  exercise of this  Warrant.  This
Warrant may be exercised up to and including the  redemption  date  specified in
such Notice of Redemption.

Section 5. Taxes.

      (a) The Company  shall pay any and all  documentary,  stamp,  transfer and
other  similar  taxes  that may be payable  with  respect  to the  issuance  and
delivery of Warrant Shares upon exercise of this Warrant.

      (b)  Notwithstanding  any other provision of this Warrant,  for income tax
purposes,  the holder or any assignee or transferee shall agree that the Company
and the Transfer  Agent shall be permitted to withhold from any amounts  payable
to such  assignee or  transferee  any taxes  required by law to be withheld from
such  amounts.  Unless  exempt from the  obligation  to do so, each  assignee or
transferee  shall execute and deliver to the Company or the Transfer  Agent,  as
applicable,  a properly completed Form W-8 or W-9, indicating that such assignee
or transferee is not subject to back-up  withholding  for United States  federal
income tax purposes.  Each  assignee or transferee  that does not deliver such a
form pursuant to the preceding  sentence shall have the burden of proving to the
Company's reasonable satisfaction that it is exempt from such requirement.

      (c) The  issuance  of  certificates  for  shares of Common  Stock upon the
exercise  of this  Warrant  shall be made  without  charge to the holder of this
Warrant  for any issue  tax in  respect  thereof;  provided,  however,  that the
Company  shall not be  required to pay any tax that may be payable in respect of
any transfer  involved in the issuance and delivery of any certificate in a name
other than that of the holder  hereof,  and the Company shall not be required to
issue or deliver  such  certificates  or other  securities  unless and until the
person or persons requesting the issuance thereof shall have paid to the Company
the  amount of such tax or shall have  established  to the  satisfaction  of the
Company that such tax has been paid. -------- -------

                                       6


Section  6.  Warrant  Holder  Not  Deemed a  Stockholder.  Except  as  otherwise
specifically  provided herein, prior to the exercise of the Warrants represented
hereby, the holder of this Warrant shall not be entitled, as such, to any rights
of a stockholder of the Company,  including,  without  limitation,  the right to
vote or to consent to any action of the stockholders of the Company,  to receive
dividends or other distributions, to exercise any preemptive right or to receive
any notice of meetings of stockholders of the Company, and shall not be entitled
to receive any notice of any  proceedings of the Company.  In addition,  nothing
contained in this Warrant shall be construed as imposing any liabilities on such
holder to purchase any  securities  (upon exercise of this Warrant or otherwise)
or as a stockholder of the Company, whether such liabilities are asserted by the
Company or by creditors of the Company.

Section 7. Compliance with Securities Laws.

      (a) The holder of this Warrant,  by the acceptance hereof,  represents and
warrants that it is acquiring this Warrant and the Warrant Shares  issuable upon
exercise of this Warrant for its own account for investment  only and not with a
view towards,  or for resale in connection with, the public sale or distribution
thereof,  except  pursuant to sales  registered or exempted under the Securities
Act; provided,  however,  that by making the representations  herein, the holder
does not agree to hold this Warrant or any of the Warrant Shares for any minimum
or other specific term and reserves the right to dispose of this Warrant and the
Warrant  Shares at any time in  accordance  with or pursuant  to a  registration
statement or an exemption  under the Securities  Act. The holder of this Warrant
further represents,  by acceptance hereof, that, as of this date, such holder is
an "accredited  investor" as such term is defined in Rule 501(a) of Regulation D
promulgated by the Securities and Exchange  Commission  under the Securities Act
and was not  organized  for the specific  purpose of  acquiring  the Warrants or
Warrant Shares.

      (b) The  holder of this  Warrant  understands  that,  until the end of the
holding  period  under  Rule  144(k)  of the  Securities  Act (or any  successor
provision)  this Warrant (and all securities  issued in exchange  therefor or in
substitution thereof, other than Warrant Shares, which shall bear the legend set
forth in Section 7(c) of this  Warrant,  if  applicable)  shall bear a legend in
substantially the following form:

           THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
           SECURITIES  ACT OF  1933,  AS  AMENDED  (THE  "SECURITIES  ACT"),  OR
           APPLICABLE  STATE  SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED
           FOR SALE, SOLD, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED IN THE
           ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT  FOR THE  SECURITIES
           UNDER THE SECURITIES ACT, OR IRIS INTERNATIONAL, INC. (THE "COMPANY")
           SHALL HAVE RECEIVED AN OPINION FROM COUNSEL  REASONABLY  SATISFACTORY



                                       7


           TO THE  COMPANY  THAT  REGISTRATION  OF  SUCH  SECURITIES  UNDER  THE
           SECURITIES  ACT AND UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND
           STATE SECURITIES LAWS IS NOT REQUIRED.

The legend set forth above  shall be removed  and the Company  shall issue a new
certificate  evidencing  a new  Warrant  of like tenor and  aggregate  number of
shares and which shall not bear the restrictive legends required by this Section
7(b): (i) if, in connection  with a sale  transaction,  such holder provides the
Company with an opinion of counsel  reasonably  acceptable to the Company to the
effect that a public sale,  assignment,  pledge or transfer of the  Warrant,  as
appropriate,  may be made without registration under the Securities Act, or (ii)
upon  expiration  of the two  year  holding  period  under  Rule  144(k)  of the
Securities Act (or any successor rule);  provided that the holder of the Warrant
is not and has not been within 3 months prior to such date,  an  "affiliate"  of
the  Company  (as such term is  defined in Rule 144 of the  Securities  Act) (in
which event such holding period shall be deemed to have expired when such holder
has not been an "affiliate" of the Company for the preceding three-month period)
.. The Company shall not require such opinion of counsel for the sale of Warrants
in accordance  with Rule 144 of the  Securities Act in the event that the holder
provides  such   representations  that  the  Company  shall  reasonably  request
confirming compliance with the requirements of Rule 144.

      (c) Subject to the terms of this clause (c), any certificate  representing
the Warrant Shares shall bear a legend in substantially the following form:

           THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
           SECURITIES  ACT OF  1933,  AS  AMENDED  (THE  "SECURITIES  ACT"),  OR
           APPLICABLE  STATE  SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED
           FOR SALE, SOLD, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED IN THE
           ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT  FOR THE  SECURITIES
           UNDER THE SECURITIES ACT, OR IRIS INTERNATIONAL, INC. (THE "COMPANY")
           SHALL HAVE RECEIVED AN OPINION FROM COUNSEL  REASONABLY  SATISFACTORY
           TO THE  COMPANY  THAT  REGISTRATION  OF  SUCH  SECURITIES  UNDER  THE
           SECURITIES  ACT AND UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND
           STATE SECURITIES LAWS IS NOT REQUIRED.

The legend set forth  above  shall be removed  and the  Company  shall issue the
Warrant  Shares  without  such legend to the holder of the  Warrant  Shares upon
which it is stamped,  (i) if the Warrant  Shares have been resold or transferred
pursuant to a  registration  statement  that was  effective  at the time of such
transfer,  (ii) if, in connection with a sale transaction,  such holder provides
the Company with an opinion of counsel  reasonably  acceptable to the Company to
the effect  that a public  sale,  assignment,  pledge or transfer of the Warrant
Shares may be made without  registration under the Securities Act, or (iii) upon
expiration of the  applicable  two year holding  period under Rule 144(k) of the
Securities Act (or any successor rule);  provided that the holder of the Warrant
Shares  is not and has  not  been  within  3  months  prior  to  such  date,  an

                                       8


"affiliate"  of the  Company  (as  such  term  is  defined  in  Rule  144 of the
Securities  Act) (in which  event such  holding  period  shall be deemed to have
expired  when such  holder has not been an  "affiliate"  of the  Company for the
preceding  three-month  period).  The Company  shall not require such opinion of
counsel for the sale of the Warrant  Shares in  accordance  with Rule 144 of the
Securities Act, provided that the holder provides such  representations that the
Company shall reasonably request confirming  compliance with the requirements of
Rule 144. The Company shall  irrevocably  instruct its transfer agent that, upon
presentation to the transfer agent of a completed Certificate of Subsequent Sale
(attached as Exhibit E to the  Purchase  Agreement),  the  transfer  agent shall
thereupon  re-issue a stock  certificate  representing the number of shares sold
without the legend set forth above.

Section 8. Ownership and Transfer.

      (a) The Company shall maintain at its principal  office  designated on the
      first page of this Agreement or such other office or agency of the Company
      as it may  designate by notice to the holder  hereof  (provided  that such
      other  designated  office  shall  be  located  in the  United  States)  (a
      "Designated   Office"),   a  register  for  this  Warrant  (the   "Warrant
      Register"),  in which the Company shall record the name and address of the
      person in whose name this  Warrant has been  issued.  Upon the transfer of
      any Warrants in accordance  with the  provisions of clause (b) below,  the
      Company shall record the name and address of such new holder(s) as well as
      the name and address of each transferee.  The Company may treat the person
      in whose name any Warrant is  registered  on the  Warrant  Register as the
      owner and holder thereof for all purposes,  notwithstanding  any notice to
      the  contrary,  but  in all  events  recognizing  any  transfers  made  in
      accordance with the terms of this Warrant.

      (b)  This  Warrant  and all  rights  hereunder  shall  be  assignable  and
      transferable by the holder hereof to a Permitted Transferee upon surrender
      of this  Warrant  with a  properly  executed  assignment  (in the  form of
      Exhibit B hereto) at the Company's  Designated Office. For the purposes of
      this Warrant, a "Permitted Transferee" shall mean any person who (a) is an
      "accredited  investor,"  as  that  term  is  defined  in  Rule  501(a)  of
      Regulation D under the Securities Act and (b) delivers to the Company his,
      her or its  written  agreement  to accept and be bound by all of the terms
      and conditions contained in this Warrant.

Section 9.  Adjustment  of  Exercise  Price and Number of Shares  Issuable  Upon
Exercise.  The Exercise Price and the number of Warrant Shares issuable upon the
exercise of each  Warrant are subject to  adjustment  from time to time upon the
occurrence of the events enumerated in this Section 9.

      (a)  In  case  the  Company  shall  hereafter  pay a  dividend  or  make a
distribution to all holders of the outstanding  Common Stock in shares of Common
Stock,  the  Exercise  Price in effect at the  opening of  business  on the date
following  the date fixed for the  determination  of  stockholders  entitled  to
receive such dividend or other distribution shall be reduced by multiplying such
Exercise  Price by a fraction of which (i) the numerator  shall be the number of
shares of Common Stock  outstanding  at the close of business on the record date
of this Warrant fixed for such  determination  and (ii) the denominator shall be
the sum of such number of shares and the total  number of shares  referred to in
(i) above  constituting such dividend or other  distribution.  Such reduction in
the  Exercise  Price shall  become  effective  immediately  after the opening of
business on the day following  the record date. If any dividend or  distribution

                                       9


of the type  described  in this Section 9(a) of this Warrant is declared but not
so paid or made,  the  Exercise  Price shall  again be adjusted to the  Exercise
Price that otherwise then be in effect if such dividend or distribution  had not
been declared.

      (b) In case the  outstanding  shares of Common  Stock shall be  subdivided
into a greater number of shares of Common Stock, the Exercise Price in effect at
the opening of business on the day following the day upon which such subdivision
becomes effective shall be proportionately reduced, and conversely,  in case the
outstanding  shares of Common Stock shall be combined  into a smaller  number of
shares of Common Stock,  the Exercise Price in effect at the opening of business
on the day following the day upon which such combination becomes effective shall
be  proportionately  increased,  such reduction or increase,  as applicable,  to
become effective  immediately after the opening of business on the day following
the day upon which such subdivision or combination becomes effective.

      (c) The  Company  may make  such  reductions  in the  Exercise  Price,  in
addition to those required by Sections 9(a) or (b) of this Warrant, as the Board
of  Directors  considers  to be advisable to avoid or diminish any income tax to
holders of Common Stock or rights to purchase  Common Stock  resulting  from any
dividend or distribution of stock (or rights to acquire stock) or from any event
treated as such for income tax purposes.

      (d) No  adjustment  in the  Exercise  Price shall be  required  under this
Section 9 unless  such  adjustment  would  require an increase or decrease of at
least 1% in the Exercise Price; provided, however, that any adjustments which by
reason of this Section 9(d) are not required to be made shall be carried forward
and taken into account in any subsequent adjustment. All calculations under this
Section 9 shall be made by the Company and shall be made to the nearest  cent or
to the nearest one hundredth of a share,  as the case may be. No adjustment need
be  made  for a  change  in the no par  value  of the  Common  Stock.

      (e) Notice to Holders of Warrants Prior to Certain Actions. In case:

      (1) the Company  shall declare a dividend (or any other  distribution)  on
its Common Stock that would require an adjustment in the Exercise Price pursuant
to this Section 9;

      (2) of any reclassification of the Common Stock of the Company (other than
a subdivision or combination  of its  outstanding  Common Stock, a change in par
value,  a change from par value to no par value or a change from no par value to
par  value),  or  any  merger,   consolidation,   statutory  share  exchange  or
combination  to which  the  Company  is a party and for  which  approval  of any
stockholders of the Company is required,  or the sale, transfer or conveyance of
all or substantially all of the assets of the Company; or

            (3) of the  voluntary or  involuntary  dissolution,  liquidation  or
winding-up of the Company;

the Company  shall  cause to be  provided to the holder of this  Warrant at such
address  appearing  in the Warrant  Register at least ten (10) days prior to the

                                       10


applicable record or effective date hereinafter  specified, a notice stating (x)
the date on which a record  is to be taken  for the  purpose  of such  dividend,
distribution,  rights or warrants,  or, if a record is not to be taken, the date
as of which the  holders of shares of Common  Stock of record to be  entitled to
such dividend, distribution, rights or warrants are to be determined, or (y) the
date on which such  reclassification,  merger,  consolidation,  statutory  share
exchange, combination, sale, transfer, conveyance,  dissolution,  liquidation or
winding-up  is  expected  to  become  effective,  and the date as of which it is
expected  that  holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities,  cash or other property deliverable
upon such  reclassification,  merger,  consolidation,  statutory share exchange,
combination, sale, transfer, dissolution,  liquidation or winding-up. Failure to
give such  notice,  or any defect  therein,  shall not affect  the  legality  or
validity of the  proceedings or actions  described in clauses (1) through (4) of
this  Section  9(e).  In addition,  whenever  the Exercise  Price is adjusted as
provided  in this  Section  9,  the  Company  shall  prepare  a  notice  of such
adjustment of the Exercise  Price setting forth the adjusted  Exercise Price and
the date on which each adjustment  becomes  effective and shall mail such notice
of such  adjustment  of the Exercise  Price to the holder of each Warrant at his
last address in the Warrant  Register  within  twenty (20) days of the effective
date of such  adjustment.  Failure to deliver such notice nor any defect therein
shall not effect the legality or validity of any such adjustment.

      (f) In any case in which this Section 9 provides that an adjustment  shall
become effective  immediately  after a record date for an event, the Company may
defer  until the  occurrence  of such  event (i)  issuing  to the  holder of any
Warrant exercised after such record date and before the occurrence of such event
the  additional  shares of Common Stock issuable upon such exercise by reason of
the  adjustment  required by such event over and above the Common Stock issuable
upon such exercise  before giving effect to such  adjustment  and (ii) paying to
such holder any amount in cash in lieu of any fraction  pursuant to Section 2(c)
of this Warrant.

      (g) Upon each adjustment of the Exercise Price pursuant to this Section 9,
each  Warrant  shall  thereupon  evidence  the right to purchase  that number of
Warrant  Shares  (calculated  to the nearest  hundredth of a share)  obtained by
multiplying the number of Warrant Shares  purchasable  immediately prior to such
adjustment  upon  exercise  of the  Warrant  by the  Exercise  Price  in  effect
immediately prior to such adjustment and dividing the product so obtained by the
Exercise  Price in effect  immediately  after such  adjustment.  The  adjustment
pursuant to this Section 9(g) to the number of Warrant Shares  purchasable  upon
exercise  of a Warrant  shall be made each time an  adjustment  of the  Exercise
Price is made pursuant to this Section 9.

Section 10. Lost, Stolen,  Mutilated or Destroyed  Warrants.  If this Warrant is
lost, stolen,  mutilated or destroyed, the Company shall promptly, on receipt of
an indemnification  undertaking or other form of security reasonably  acceptable
to the Company (or in the case of a mutilated Warrant, the Warrant), issue a new
Warrant  of like  denomination  and  tenor  as this  Warrant  so  lost,  stolen,
mutilated or destroyed.

Section 11. Notice.  All notices,  requests,  consents and other  communications
hereunder  shall be in writing,  shall be mailed (A) if within  United States by
first-class  registered or certified airmail, or nationally recognized overnight
express  courier,  postage  prepaid,  or by facsimile,  or (B) if delivered from

                                       11


outside the United States,  by International  Federal Express or facsimile,  and
shall be deemed given (i) if delivered by  first-class  registered  or certified
mail  domestic,  three (3) business  days after so mailed,  (ii) if delivered by
nationally recognized overnight carrier, one business day after so mailed, (iii)
if delivered by International  Federal  Express,  two (2) business days after so
mailed,  and (iv) if delivered  by  facsimile,  upon  electric  confirmation  of
receipt, and shall be delivered as addressed as follows:

                        If to the Company:
                              Iris International, Inc.
                              9172 Eton Avenue
                              Chatsworth, California 91311
                              Attn:  Mr. Cesar M. Garcia
                              Tel:  818-709-1244
                              Fax:

                        with a copy to:
                              Sheppard Mullin Richter & Hampton, LLP
                              800 Anacapa Street
                              Santa Barbara, CA 93101
                              Attn:  Joseph E. Nida, Esq.
                              Tel:  (805) 879-1811
                              Fax: (805) 568-1955

                        If to the Transfer Agent:
                              Continental Stock and Transfer Co.
                              17 Battery Place
                              New York, New York 10004
                              Telephone: (212) 509-4000
                              Facsimile: (212) 616-7608
                              Attention: Richard Biscovich

If to a holder of this Warrant,  to it at the address and  facsimile  number set
forth on the signature  page to the Purchase  Agreement or at such other address
and facsimile as shall be delivered to the Company upon the issuance or transfer
of this Warrant.

Section  12.  Amendments.  This  Warrant  and any term  hereof  may be  amended,
changed,  waived,  discharged,  or  terminated  only by an instrument in writing
signed by the Company and holders of a majority of Warrant Shares represented by
all Warrants. Such amendment,  change, waiver, discharge or termination shall be
binding  on  the  Company  and  all  of  the  Warrant  holder's   assignees  and
transferees.  No waivers of any term,  condition or provision of this Warrant in
any one or more  instances  shall be deemed to be or  construed  as a further or
continuing waiver of any such term, condition or provision.

Section 13. Obligations Binding on Successors. This Warrant will be binding upon
any  entity  succeeding  to the  Company in one or a series of  transactions  by

                                       12


merger,  consolidation  or  acquisition  of  all  or  substantially  all  of the
Company's assets or other similar transactions and shall inure to the benefit of
the   holder   hereof  and  its   successors,   permitted   assigns   and  legal
representatives.

Section 14. Limitation on Exercise.

      (a) Notwithstanding  anything to the contrary contained herein, the number
of Warrant  Shares that may be acquired by the Holder upon any  exercise of this
Warrant  (or  otherwise  in  respect  hereof)  shall be  limited  to the  extent
necessary to insure that, following such exercise (or other issuance), the total
number of shares of Common Stock then beneficially  owned by such Holder and its
Affiliates  and any other  Persons  whose  beneficial  ownership of Common Stock
would be  aggregated  with the  Holder's  for  purposes of Section  13(d) of the
Exchange  Act,  does not  exceed  4.999%  of the  total  number  of  issued  and
outstanding  shares of Common  Stock  (including  for such purpose the shares of
Common  Stock  issuable  upon  such  exercise).  For such  purposes,  beneficial
ownership  shall be determined in accordance  with Section 13(d) of the Exchange
Act and the rules and regulations promulgated  thereunder.  By written notice to
the Company,  the Holder may waive the provisions of this Section 14(a), but any
waiver will not be effective until the 61st day after delivery of such notice.

      (b) Notwithstanding  anything to the contrary contained herein, the number
of Warrant  Shares that may be acquired by the Holder upon any  exercise of this
Warrant  (or  otherwise  in  respect  hereof)  shall be  limited  to the  extent
necessary to insure that, following such exercise (or other issuance), the total
number of shares of Common Stock then beneficially  owned by such Holder and its
Affiliates  and any other  Persons  whose  beneficial  ownership of Common Stock
would be  aggregated  with the  Holder's  for  purposes of Section  13(d) of the
Exchange  Act,  does not  exceed  9.999%  of the  total  number  of  issued  and
outstanding  shares of Common  Stock  (including  for such purpose the shares of
Common  Stock  issuable  upon  such  exercise).  For such  purposes,  beneficial
ownership  shall be determined in accordance  with Section 13(d) of the Exchange
Act and the rules and regulations promulgated  thereunder.  This restriction may
not be waived.

Section 15.  Governing  Law;  Consent to  Jurisdiction.  This  Warrant  shall be
governed by, and construed in accordance with, the internal laws of the State of
New York,  without  giving  effect to the  principles  of  conflicts of law. The
Company,  and  by its  acceptance  hereof,  the  holder  of  this  Warrant  each
irrevocably submits to the exclusive  jurisdiction of the courts of the State of
New York located in New York County and the United States District Court for the
Southern District of New York for the purpose of any suit, action, proceeding or
judgment  relating  to or  arising  out of this  Warrant  and  the  transactions
contemplated hereby. Service of process in connection with any such suit, action
or proceeding may be served on the Company and such holder anywhere in the world
by the same  methods  as are  specified  for the  giving of  notices  under this
Warrant.  The Company,  and by its acceptance hereof, the holder of this Warrant
each  irrevocably  consents  to the  jurisdiction  of any such court in any such
suit,  action  or  proceeding  and to the  laying  of venue in such  court.  The
Company,  and  by its  acceptance  hereof,  the  holder  of  this  Warrant  each
irrevocably waives any objection to the laying of venue of any such suit, action
or proceeding  brought in such courts and irrevocably  waives any claim that any
such suit, action or proceeding brought in any such court has been brought in an
inconvenient forum.

                                       13


      Section 16.  Descriptive  Headings.  The  headings of this Warrant are for
convenience  of  reference  only and  shall not limit or  otherwise  affect  the
meaning hereof.




                                       14





IN WITNESS  WHEREOF,  the Company has caused this Warrant to be duly executed as
of day and year first above written.

                                          COMPANY:

                                          IRIS INTERNATIONAL, INC.



                                          By:
                                             ---------------------------------
                                          Its:
                                              --------------------------------





                                       15





                              EXHIBIT A TO WARRANT

                             FORM OF EXERCISE NOTICE

The undersigned holder hereby exercises the right to purchase  ______________ of
the shares of Common Stock  ("Warrant  Shares") of Iris  International,  Inc., a
Delaware  corporation  (the  "Company"),  evidenced by the attached Warrant (the
"Warrant").  Capitalized  terms used herein and not otherwise defined shall have
the respective meanings set forth in the Warrant.  The undersigned holder hereby
represents and warrants to the Company as follows:

      (a) The  undersigned  holder is an "accredited  investor," as that term is
defined in Rule 501(a) of Regulation D under the Securities Act; and

      (b) The  undersigned  holder  has sold or will  sell the  shares of common
stock issuable  pursuant to this Notice pursuant to a registration  statement or
an exemption from registration under the Securities Act.

Date: _______________, ____

- ----------------------------------                 ----------------------------
Name of Registered Holder                          Tax ID of Registered Holder
                                                  (if applicable)
By:
   ---------------------------------
Its:
    --------------------------------





                                       1





                                 ACKNOWLEDGMENT

The  Company  hereby  acknowledges  this  Exercise  Notice  and  hereby  directs
Continental Stock and Transfer Co. to issue the above indicated number of shares
of Common Stock issuable upon exercise of the Warrant to the designated holder.

                                          IRIS INTERNATIONAL, INC.

                                          By:
                                             ---------------------------
                                          Its:
                                              --------------------------



                                       1




                              EXHIBIT B TO WARRANT

                               FORM OF ASSIGNMENT

FOR  VALUE  RECEIVED,  the  undersigned  does  hereby  assign  and  transfer  to
________________,  Federal Identification No. __________,  a warrant to purchase
____________ shares of the common stock of IRIS INTERNATIONAL,  INC., a Delaware
corporation,  represented by warrant certificate no. _____, standing in the name
of the undersigned on the books of said corporation. The undersigned does hereby
irrevocably  constitute  and appoint  ______________,  attorney to transfer  the
warrants of said corporation, with full power of substitution in the premises.

Dated:  _________, 200_


                                          By:
                                             ---------------------------------
                                          Its:
                                              --------------------------------


                                       1





                                 Exhibit B
                 Form of Opinion of Counsel to the Company


                                                                Our File Number
                                                                  03CV-105442


                                 April 20, 2004

            To the Purchasers of Common Stock of
            IRIS International, Inc.
            Listed on Execution Pages to the Securities Purchase Agreements

- -------------------------------------------------------------------
Re:   Legal Opinion for Issuance and Sale of Common Stock
- -------------------------------------------------------------------
Dear Ladies and Gentlemen:

      We have acted as special counsel for IRIS International,  Inc., a Delaware
corporation (the  "Company"),  in connection with the sale by the Company to you
of up to Two Million  One  Hundred  Thirty  Thousand  (2,130,000)  shares of the
Company's  Common  Stock (the  "Shares")  pursuant  to the  Securities  Purchase
Agreements (the "Securities Purchase  Agreements"),  dated as of April 19, 2004,
among the Company and the parties  listed on the  Execution  Pages  thereof (the
"Investors").  This  opinion is given to you  pursuant to Section  1.4(a) of the
Securities  Purchase  Agreements in connection with the sale of the Shares.  The
Securities  Purchase  Agreements are also referred to herein as the "Transaction
Documents."  Unless defined  herein,  capitalized  terms have the meanings given
them in the Transaction Documents.

      As to  matters  of  fact,  we are  relying  upon the  representations  and
warranties of all parties  contained in the Securities  Purchase  Agreements and
the Certificate of the Company attached hereto ("Opinion  Certificate") and upon
certificates  and statements of government  officials,  all without  independent
verification.  In  addition,  we  examined  originals  or copies  of  documents,
corporate  records and other writings that we consider relevant for the purposes
of this  opinion.  In such  examination,  we  assumed  that  the  signatures  on
documents and  instruments  examined by us are authentic,  that each is complete
and what it purports to be, that all documents and  instruments  submitted to us
as copies or facsimiles  conform with the originals,  and that the documents and
instruments  submitted  to us have not been  amended or modified  since the date
submitted.

      In our  examination of documents,  we further assumed (i) that each person
or entity  entering  into such  documents  (other than the Company in connection
with the Transaction  Documents) had the power, legal competence and capacity to
enter into and perform all of such party's obligations thereunder,  (ii) the due
authorization,  execution  and  delivery  by  each  party  (other  than  the due

                                       1


authorization,  execution  and  delivery  of the  Transaction  Documents  by the
Company),  (iii) the enforceability and binding nature of the obligations of the
parties to such documents (other than as to the enforceability  against, and the
binding nature upon, the Company of the Transaction Documents),  (iv) that there
is no  fact or  circumstance  relating  to any  party  that  might  prevent  the
Investors  from  enforcing  any of the rights  provided  for in the  Transaction
Documents,  (v)  performance  on or before the  Closing by all  parties of their
obligations  under the  Transaction  Documents  to be performed on or before the
Closing and (vi) tha no action has been taken or event  occurred  which  amends,
revokes,  terminates or renders invalid any of the documents,  records, consents
or  resolutions  which we have reviewed  since the date of the  certificates  we
relied  upon in  rendering  this  opinion.  We also  assumed  that  there are no
extrinsic  agreements  or  understandings  among the parties to the  Transaction
Documents that would modify or interpret the terms of the Transaction  Documents
or the respective rights or obligations of the parties thereunder.

      As used in this opinion,  the  expression  "to our knowledge" or "known to
us" with reference to matters of fact refers to the current actual  knowledge of
Joseph E. Nida and William Manierre,  the attorneys within the firm with primary
responsibility  for the  transactions  covered  by this  opinion.  Except to the
extent  expressly  set  forth  herein  we have not  undertaken  any  independent
investigation  to  determine  the  accuracy or  completeness  of such  statement
(including  without  limitation any examination of any documents in our files or
otherwise  made  available  to us by the  Company),  and no  inference as to the
accuracy  or   completeness   of  such  statement   should  be  drawn  from  our
representation of the Company or our rendering the opinions set forth below.

      Based  upon  and  subject  to the  foregoing  and the  qualifications  and
limitations set forth below, and except as set forth in the Securities  Purchase
Agreements or the Schedule of Exceptions thereto, it is our opinion that:

      1. The  Company  and each of its  subsidiaries  is a  corporation  validly
      existing  and  in  good  standing  under  the  laws  of the  state  of its
      incorporation,  and has the requisite  corporate  power to own,  lease and
      operate its properties and to conduct its business as presently conducted.
      The  Company  and  each of its  subsidiaries  is  qualified  as a  foreign
      corporation  to do business and is in good standing in each state in which
      such  qualification  is necessary to conduct its business other than those
      in which the  failure  to so  qualify  would not have a  material  adverse
      effect on the  business,  operations,  financial  condition  or results of
      operation of the Company and its subsidiaries, individually and taken as a
      whole.

      2. The Company has the requisite corporate power and authority to execute,
      deliver and  perform  its  obligations  under the  Transaction  Documents,
      including the issuance of the Common  Stock,  the Warrants and the Warrant
      Shares in accordance with the terms thereof. The execution and delivery of
      the Transaction Documents by the Company and the consummation by it of the
      transactions  contemplated  therein  have  been  duly  authorized  by  the
      Company's  Board of Directors and no further consent or  authorization  of
      the  Company,  its Board of  Directors  or its  stockholders  is  required
      therefore. The Transaction Documents have been duly executed and delivered
      by the Company.  The Transaction  Documents  constitute  valid and binding
      agreements of the Company,  enforceable  against the Company in accordance
      with their respective terms,  except as such enforceability may be limited
      by general  principles  of equity or  applicable  bankruptcy,  insolvency,

                                       2


      reorganization,  moratorium,  liquidation  or similar laws relating to, or
      affecting generally, the enforcement of creditors' rights and remedies.

      3. The  issuance  and sale of the Shares and the  Warrants  have been duly
      authorized.  When issued in  accordance  with the terms of the  Securities
      Purchase  Agreements,  the Shares and the Warrants will be validly issued,
      fully paid and  non-assessable and free of all taxes,  liens,  charges and
      preemptive  rights with respect to the issue  thereof.  The Warrant Shares
      have been duly  authorized  and reserved for issuance upon exercise of the
      Warrants  in  accordance  with  the  terms  of  the  Securities   Purchase
      Agreements and the Warrants,  and when issued in accordance with the terms
      of the Securities Purchase Agreements and the Warrants, the Warrant Shares
      will be  validly  issued,  fully paid and  non-assessable  and free of all
      taxes,  liens,  charges and  preemptive  rights with  respect to the issue
      thereof.  THREE HUNDRED NINETEEN THOUSAND FIVE HUNDRED (319,500) shares of
      Common Stock,  which is sufficient  to meet the Company's  obligations  to
      issue Warrant Shares, have been duly reserved by the Company.

      4. The authorized  capital stock of the Company  consists of FIFTY MILLION
      (50,000,000)  shares of Common  Stock,  par value $0.01 per share,  TWELVE
      MILLION  TWO  HUNDRED  SEVENTY  TWO  THOUSAND  TWO HUNDRED AND SEVENTY TWO
      (12,272,272) of which to our knowledge are issued and outstanding prior to
      the Closing,  and THREE MILLION (3,000,000) shares of Preferred Stock, par
      value $0.01 per share,  THREE  THOUSAND  (3,000) shares of which have been
      designated  Series A Preferred  Stock ("Series A Preferred"),  of which to
      our knowledge none are issued and  outstanding  prior to the Closing,  and
      TWO HUNDRED  AND FIFTY SIX  THOUSAND  (256,000)  shares of which have been
      designated Series B Preferred Stock ("Series B Preferred"),  none of which
      are  issued  and  outstanding  prior  to  the  Closing;  and  ONE  MILLION
      (1,000,000)  shares of which have been designated Series C Preferred Stock
      ("Series C Preferred"),  none of which are issued and outstanding prior to
      the  Closing.   All  of  such  issued  and  outstanding  shares  are  duly
      authorized,   validly  issued  and,  to  our  knowledge,  fully  paid  and
      nonassessable. The Company has reserved TWO MILLION ONE HUNDRED AND THIRTY
      THOUSAND  (2,130,000)  shares  of  Common  Stock  for  issuance  under the
      Securities  Purchase  Agreements  and FOUR  MILLION TWO  HUNDRED  THOUSAND
      (4,200,000)  shares of Common Stock for issuance under the Company's 1994,
      1997 and 1998 Stock  Option  Plans.  The Company has EIGHT  HUNDRED  FIFTY
      THREE  THOUSAND AND FORTY  (853,040)  issued and  outstanding  warrants to
      purchase  shares of its Common  Stock,  and TWO MILLION  SEVEN HUNDRED AND
      FOUR THOUSAND AND THIRTY (2,704,030) outstanding stock options to purchase
      shares of its Common Stock.

      5.  None of such  Common  Stock  or such  Preferred  Stock is  subject  to
      preemptive  rights or other  rights  of the  stockholders  of the  Company
      pursuant to the Certificate of  Incorporation  or the By-laws or under the
      Delaware General Corporation Law.

                                       3


      6. Based  upon the  Investors'  representations,  the  Common  Stock,  the
      Warrants  and the  Warrant  Shares  may be issued to you  pursuant  to the
      Transaction  Documents  without  registration  under  the  1933 Act or the
      securities laws of any state.

      7. No  authorization,  approval,  consent,  filing  or other  order of any
      federal or state  governmental body,  regulatory  agency,  self-regulatory
      organization  or stock  exchange  or market,  or the  stockholders  of the
      Company, or any court, or, to our knowledge,  any third party, is required
      to be obtained  by the  Company to enter into and perform its  obligations
      under the Transaction Documents or for the issuance and sale of the Common
      Stock,  the  Warrants  or  the  Warrant  Shares  as  contemplated  by  the
      Transaction  Documents with the exception of (i) the listing of the Common
      Stock and Warrant Shares with the Nasdaq, (ii) the filing of a Form D with
      the  SEC  and  the  Notice  Filing  required  by  Section  21502.1  of the
      California  Corporations Code, and (iii) such  registrations,  filings and
      approvals with and by the SEC and applicable state  securities  regulators
      as may be  necessary  to effect the  registration  of the Common Stock and
      Warrant Shares for resale.

      8. Except as disclosed in the Securities Purchase  Agreements,  we have no
      knowledge of any action, suit, proceeding, inquiry or investigation before
      or by any  court,  public  board  or body or any  governmental  agency  or
      self-regulatory  organization pending or threatened against the Company or
      any of its  subsidiaries or any of the properties or assets of the Company
      or any of its subsidiaries.

      9.  The  execution,  delivery  and  performance  by  the  Company  of  the
      Transaction Documents, the consummation by the Company of the transactions
      contemplated  thereby and the  compliance  by the  Company  with the terms
      thereof do not violate, conflict with or constitute a default (or an event
      which, with the giving of notice or lapse of time or both,  constitutes or
      would constitute a default) under,  give rise to any right of termination,
      cancellation or acceleration under, or result in the creation of any lien,
      charge or  encumbrance  on or against any of the properties of the Company
      pursuant to, (i) the  Certificate of  Incorporation  or the By-laws of the
      Company,  (ii) to the  best  of our  knowledge,  any  agreement  or  other
      document with respect to the Company's Common Stock,  (iii) to the best of
      our knowledge,  any other agreement,  note, lease, mortgage, deed or other
      instrument  to which the  Company  is a party or by which the  Company  is
      bound,  or (iv) any statute,  law,  rule or  regulation  applicable to the
      Company or, to our knowledge,  any order,  writ,  injunction or decree, if
      such  violation  would have a  material  adverse  effect on the  business,
      operations,  financial  condition or results of  operations of the Company
      and its subsidiaries individually or taken as a whole.

      Please note that we have not conducted a docket search in any jurisdiction
with respect to litigation  that may be pending  against the Company nor have we
undertaken any other inquiry whatsoever.

      In  rendering  the opinion  set forth in  Paragraph 1 above as to the good
standing  of  the  Company  and  as  to  its  qualification  to do  business  in

                                       4


California, we relied exclusively on certificates of public officials,  although
we did not obtain tax good standing certificates in the State of California, and
no opinion is provided with respect to tax good standing in such state.

      In rendering  the opinion set forth in  Paragraph 4 above  relating to the
fully paid status of all of the issued  shares of capital  stock of the Company,
we relied without independent verification on the Opinion Certificate.

      In rendering  the opinion set forth in  Paragraph 4 above  relating to the
status of the  capitalization  of the  Company,  we relied  without  independent
verification   on  (i)  the  Company's   Certificate   of   Incorporation   (the
"Certificate"),  (ii) minute books  relating to meetings and written  actions of
the Board of Directors and  stockholders of the Company and stock records in our
possession and (iii) the Opinion Certificate.

      With  regard to the  opinion  set  forth in  Paragraph  5 above  regarding
enforceability, we note that whenever an opinion herein states that an agreement
is a "valid and binding  obligation" of a party  "enforceable in accordance with
its terms," such statement shall mean that,  subject to the  qualifications  and
limitations  set forth herein,  (i) an effective  contract has been formed under
California law, (ii) the entire agreement is not invalid by reason of a specific
statutory  prohibition  or the public policy of the State of  California,  (iii)
contractual  defenses to the entire  agreement  are not  available and (iv) some
remedy is available if a party to the agreement does not materially  comply with
its terms. This does not imply that any particular type of remedy is available.

      Our opinion set forth in Paragraph 5 is further  qualified by, and subject
to, and we render no opinion with respect to, the following:

      1. The effect of bankruptcy,  insolvency,  reorganization,  moratorium and
other  similar laws relating to or affecting the relief of debtors or the rights
and remedies of creditors generally,  including without limitation the effect of
statutory or other law regarding fraudulent  transfers,  preferential  transfers
and distributions and equitable subordination;

      2.  Limitations   imposed  by  general   principles  of  equity  upon  the
availability  of equitable  remedies for the  enforcement  of  provisions of the
Transaction  Documents,  whether considered in a proceeding at law or in equity,
and by the effect of judicial  decisions  holding  that certain  provisions  are
unenforceable  when their enforcement would violate the implied covenant of good
faith and fair dealing,  or would be commercially  unreasonable,  or where their
breach is not material;

      3. The effect of Section 1670.5 of the California  Civil Code or any other
California  law,  United States  federal or Delaware law or equitable  principle
which provides that a court may refuse to enforce,  or may limit the application
of, a  contract  or any  clause  thereof  which  the  court  finds to have  been
unconscionable at the time it was made or contrary to public policy;

      4.  The   enforceability  of  provisions  of  the  Transaction   Documents
expressly, or by implication, waiving or relinquishing broadly or vaguely stated
rights or unknown future rights or defenses,  or waiving defenses to obligations
or rights  granted by law (whether  substantive or procedural) or waiving rights
to damages, or the benefits of statutory,  regulatory or constitutional  rights,
unless and to the extent the  statute,  regulation  or  constitution  explicitly
permits the waiver of such rights;

                                       5


      5.  The  enforceability  of  any  provision  of any  Transaction  Document
purporting  to (a)  waive  rights  to trial  by  jury,  service  of  process  or
objections to venue or jurisdiction  in connection  with any litigation  arising
out of or pertaining to the Transaction  Documents,  (b) exclude conflict of law
principles  under California law, (c) establish  particular  courts as the forum
for the adjudication of any controversy  relating to the Transaction  Documents,
(d)  establish  the  laws  of any  particular  state  or  jurisdiction  for  the
adjudication  of any  controversy  relating to the  Transaction  Documents,  (e)
establish evidentiary standards or make determinations conclusive or (f) provide
for arbitration of disputes;

      6. The effect of judicial decisions,  which may permit the introduction of
extrinsic  evidence to modify the terms or the interpretation of the Transaction
Documents;

      7. The  enforceability  of any  provisions  of the  Transaction  Documents
providing  that (a) rights or remedies are or are not  exclusive,  (b) rights or
remedies  may be  exercised  without  notice,  (c)  every  right  or  remedy  is
cumulative  and may be  exercised  in  addition  to or with any  other  right or
remedy,  (d) the election of a particular  remedy or remedies  does not preclude
recourse to one or more other  remedies,  (e) liquidated  damages are to be paid
upon the breach of any Transaction  Document or (f) the failure to exercise,  or
any delay in  exercising,  rights or remedies  available  under the  Transaction
Documents will not operate as a waiver of any such right or remedy;

      8. The enforceability of any attorneys' fees, severability, reimbursement,
indemnification or contribution provisions;

      9. Any provision of the Transaction Documents requiring written amendments
or waivers insofar as it suggests that oral or other  modifications,  amendments
or  waivers  could not be  effectively  agreed  upon by the  parties or that the
doctrine of promissory estoppel might not apply. We note that a requirement that
provisions of the Transaction Documents may only be amended or waived in writing
may  not be  binding  or  enforceable  if an oral  agreement  has  been  created
modifying such provision or an implied  agreement by trade practice or course of
conduct has given rise to an amendment or waiver;

      10. The  enforceability  of any  provisions in the  Transaction  Documents
concerning the voting of capital stock.

      11. The  enforceability  of any  provisions in the  Transaction  Documents
concerning the obligation of the Company (or its underwriters or agents) to sell
shares of stock to the Investors in connection with a public offering; and

      12. The validity,  binding  effect or  enforceability  of the  Transaction
Documents to the extent that an arbitrator's decision may be contrary to the law
or the facts and not subject to reversal.

      In  rendering  the  opinion  set forth in  Paragraph  7 above  relating to
violations of United States  federal,  California  or Delaware  corporate  laws,
rules or  regulations  applicable  to the  Company,  we have not  conducted  any

                                       6


investigation  into the types of businesses  and activities in which the Company
engages or the manner in which the Company conducts its businesses.  We have not
conducted any special investigation of laws, statutes,  rules or regulations and
our  investigation  of and our  opinion  is  limited  to  such  laws,  rules  or
regulations that in our experience are typically  applicable to a transaction of
the nature  contemplated by the Transaction  Documents.  We have assumed that no
party to the  Transaction  Documents  will in the future take any  discretionary
action (including a decision not to act permitted by the Transaction  Documents)
that would cause the  performance  of the  Transaction  Documents to violate the
Delaware  General  Corporate Law or any California or federal  statute,  rule or
regulation;  constitute  a  violation  or breach of or default  under any of the
Contractual Obligations;  or require an order, consent, permit or approval to be
obtained from a California or federal government authority.

      In  rendering  the opinion set forth in  Paragraph 6 regarding  securities
exemptions, we have assumed the accuracy of, and have relied upon, the Company's
representations  to us that the  Company has made no offer to sell the Shares by
means of any general solicitation or publication of any advertisement therefor.

      In addition to the foregoing,  the opinions expressed above are subject to
the following limitations, exceptions, qualifications and assumptions:

      1. We  express  no  opinion  as to  compliance  with any  federal or state
antitrust  statutes,  rules or  regulations,  including  without  limitation the
Hart-Scott-Rodino Antitrust Improvements Act of 1976.

      2. We assumed (a) the accuracy and completeness of the representations and
warranties of the Investors set forth in the  Transaction  Documents and (b) the
validity of any wire transfers, drafts or checks tendered by the Investors.

      3. We  express  no  opinion as to  compliance  with  applicable  antifraud
statutes,  rules or regulations of applicable  state and federal laws concerning
the issuance or sale of securities,  including  without  limitation the accuracy
and completeness of the information  provided by the Company to the Investors in
connection with the offer and sale of the Shares.

      4. We express no opinion as to whether the members of the Company's  Board
of Directors have complied with their  fiduciary  duties in connection  with the
authorization and performance of the Transaction Documents.

      5. We assumed that the actions of the Company and its officers,  directors
and  stockholders  comply  with the  provisions  of Section  144 of the  General
Corporation Law of the State of Delaware.

      6. We express no opinion as to matters governed by any laws other than the
laws of the State of  California,  the corporate law of the State of Delaware or
the federal law of the United States of America. We express no opinion as to the
laws of any other jurisdiction nor as to the statutes, administrative decisions,
rules, regulations or requirements of any county,  municipality,  subdivision or
local  authority  of any  jurisdiction.  We express no opinion as to whether the

                                       7


laws of any  jurisdiction  are  applicable to the  Transaction  Documents or the
transactions contemplated thereby.

      7. We express no opinion as to matters  governed by federal and state laws
and  regulations  governing:  usury;  securities  (except  with  respect  to the
transactions   contemplated  by  the  Transaction  Documents);   broker-dealers,
investment  companies,  and investment advisers;  insurance;  labor,  employment
(including, but not limited to, the Americans with Disabilities Act) and pension
and employee benefits;  antitrust and unfair  competition;  escheat;  health and
safety, environmental protection and hazardous substances; taxation; or patents,
copyrights, trademarks, trade names and other intellectual property rights.

      8. We note that the parties to the  Transaction  Documents have designated
the  laws  of the  State  of New  York as the  laws  governing  the  Transaction
Documents.  Our opinion is premised  upon the result that would be obtained if a
California  court were to apply the internal  laws of the State of California to
the interpretation and enforcement of the Transaction Documents (notwithstanding
the designation therein of the laws of the State of New York).

      This Opinion is qualified to the extent,  and is rendered and delivered on
the express  condition  and  assumption,  that no counsel for the  addressee has
expressed  or reached  opinions  which are contrary to the opinions set forth in
this letter.

      This  opinion is rendered as of the date first  written  above  solely for
your benefit in connection with the Securities  Purchase  Agreements and may not
be relied on by, nor may copies be delivered  to, any other  person  without our
prior written consent. Our opinion is expressly limited to the matters set forth
above and we render no opinion,  whether by implication or otherwise,  as to any
other matters relating to the Company.  We assume no obligation to inform you of
any facts,  circumstances,  events or changes in the law that may  hereafter  be
brought to our attention that may alter, affect or modify the opinions expressed
herein.

                                    Very truly yours,






                                       8



                                   Exhibit C
                      Registration Statement Questionnaire


To:   IRIS International, Inc.
      c/o Joseph E. Nida Esq.
      Sheppard Mullin Richter & Hampton, LLP
      800 Anacapa Street
      Santa Barbara, CA 93101

Reference is made to the Securities  Purchase Agreement (the "Agreement"),  made
between IRIS International,  Inc., a Delaware  corporation (the "Company"),  and
the Purchasers noted therein.

The undersigned  hereby  furnishes to the Company the following  information for
use by the  Company  in  connection  with the  preparation  of the  Registration
Statement contemplated by Section 5 of the Agreement.

(1)   Name and Contact Information:


          Full legal name of record holder:             ------------------------

          Address of record holder:                     ------------------------

                                                        ------------------------

          Social  Security  Number or Taxpayer          ------------------------
          identification  number of record  holder:

          Identity of beneficial owner (if different    ------------------------
          than record holder):

          Name of contact person:                       ------------------------

          Telephone number of contact person:           ------------------------

          Fax number of contact person:                 ------------------------

          E-mail address of contact person:             ------------------------





                                       1




(2)   Beneficial Ownership of Registrable Shares:

(a) Number of Registrable Shares owned by Selling Stockholder:

- ------------------------------------------------------------------------

(b) Number of Registrable Shares requested to be registered:

- ------------------------------------------------------------------------

(3) Beneficial Ownership of Other Securities of the Company Owned by the Selling
Stockholder:

Except  as set  forth  below  in  this  Item  (3),  the  undersigned  is not the
beneficial or registered  owner of any  securities of the Company other than the
Registrable Shares listed above in Item (2)(a).

Type  and  amount  of  other  securities   beneficially  owned  by  the  Selling
Stockholder:

- ------------------------------------------------------------------------

- ------------------------------------------------------------------------
(4)   Relationships with the Company:

Except as set forth below,  neither the  undersigned  nor any of its affiliates,
officers,  directors  or  principal  equity  holders  (5% or more)  has held any
position or office or has had any other material  relationship  with the Company
(or its predecessors or affiliates) during the past three years.

State any exceptions here:


- ------------------------------------------------------------------------

- ------------------------------------------------------------------------

(5)  Selling Stockholder Affiliations:

(a) Is the Selling Stockholder a registered broker-dealer?

- ------------------------------------------------------------------------

(b) Is the Selling  Stockholder  an affiliate of a registered  broker-dealer(s)?
(For purposes of this response,  an "affiliate" of, or person "affiliated" with,
a specified person, is a person that directly, or indirectly through one or more
intermediaries,  controls or is controlled  by, or is under common control with,
the person specified.)

- ------------------------------------------------------------------------

                                       2


(c)  If  the   answer  to  Item   (6)(b)  is  yes,   identify   the   registered
broker-dealer(s) and describe the nature of the affiliation(s):

- ------------------------------------------------------------------------

(d) If the answer to Item (6)(b) is yes, did the Selling Stockholder acquire the
Registrable Shares in the ordinary course of business (if not, please explain)?

- ------------------------------------------------------------------------

(e) If the answer to Item  (6)(b) is yes,  did the Selling  Stockholder,  at the
time of  purchase  of the  Registrable  Shares,  have any  agreements,  plans or
understandings,  directly  or  indirectly,  with any  person to  distribute  the
Registrable Shares (if yes, please explain)?


- ------------------------------------------------------------------------

- ------------------------------------------------------------------------


 (6)  Voting or Investment Control over the Registrable Shares:

If the Selling Stockholder is not a natural person,  please identify the natural
person or persons who have voting or  investment  control  over the  Registrable
Shares listed in Item (2) above:

- ------------------------------------------------------------------------


      Pursuant to the Agreement,  the undersigned  acknowledges that the Company
may, by notice to the  Placement  Agent,  suspend or withdraw  the  Registration
Statement  and  require  that  the  undersigned   immediately   cease  sales  of
Registrable  Shares  pursuant  to  the  Registration   Statement  under  certain
circumstances  described in the Agreement. At any time that such notice has been
given,  the  undersigned  may  not  sell  Registrable  Shares  pursuant  to  the
Registration Statement.

      By signing  below,  the  undersigned  consents  to the  disclosure  of the
information  contained  herein in its answers to Items (1) through (6) above and
the inclusion of such information in the Registration Statement,  any amendments
thereto  and the  related  prospectus.  The  undersigned  understands  that such
information  will  be  relied  upon  by  the  Company  in  connection  with  the
preparation  or  amendment  of  the  Registration   Statement  and  the  related
prospectus.

      The  undersigned  has  reviewed  the  answers to the above  questions  and
affirms that the same are true, complete and accurate. THE UNDERSIGNED AGREES TO
NOTIFY THE COMPANY IMMEDIATELY OF ANY CHANGES IN THE FOREGOING INFORMATION.


                                       3




Dated: _____________, 2004               --------------------------------------
                                         Signature of Record Holder
                                         (Please  sign your name in exactly  the
                                         same manner as the  certificate(s)  for
                                         the shares being registered)






                                       4





                                    Exhibit D
                       Purchaser Suitability Questionnaire

Before any sale of Shares or Warrants by IRIS International, Inc. can be made to
you, this Questionnaire must be completed and returned to Oppenheimer & Co. Inc.
Attn: Investment Banking Department, 125 Broad St., New York, NY 10004

1.    IF YOU ARE AN INDIVIDUAL  PLEASE FILL IN THE  IDENTIFICATION  QUESTIONS IN

      (A) IF YOU ARE AN ENTITY  PLEASE FILL IN THE  IDENTIFICATION  QUESTIONS IN
      (B)

A. INDIVIDUAL IDENTIFICATION QUESTIONS
   Name _______________________________________________________________________
           (Exact name as it should appear on stock certificate)
   Residence Address __________________________________________________________
   Home Telephone Number_______________________________________________________
   Fax Number _________________________________________________________________
   Date of Birth ______________________________________________________________
   Social Security Number______________________________________________________

B. IDENTIFICATION  QUESTIONS  FOR  ENTITIES

   Name _______________________________________________________________________
        (Exact name as it will appear on stock certificate)
  Address of Principal Place of Business ______________________________________
  State (or Country) of Formation or Incorporation_____________________________
  Contact Person ______________________________________________________________
  Telephone Number ( )_________________________________________________________
  Type of Entity  _____________________________________________________________
                  (corporation,  partnership, trust, etc.)
 Was entity formed for the purpose of this investment?
            Yes __       No  __


2.    DESCRIPTION OF INVESTOR

      The following  information  is required to ascertain  whether you would be
deemed an "accredited investor" as defined in Rule 501 of Regulation D under the
Securities Act. Please check whether you are any of the following:

      [_]  a  corporation  or  partnership   with  total  assets  in  excess  of
           $5,000,000,   not  organized  for  the  purpose  of  this  particular
           investment

      [_]  private business development company as defined in Section 202(a)(22)
           of the Investment  Advisers Act of 1940, a U.S.  venture capital fund
           which invests  primarily  through private  placements in non-publicly
           traded  securities and makes  available  (either  directly or through
           co-investors)  to  the  portfolio  companies   significant   guidance
           concerning management, operations or business objectives

      [_]  a Small  Business  Investment  Company  licensed  by the  U.S.  Small
           Business  Administration  under  Section  301(c)  or (d) of the Small
           Business Investment Act of 1958

      [_]  an investment  company registered under the Investment Company Act of
           1940 or a business development company as defined in Section 2(a)(48)
           of that Act

      [_]  a trust not organized to make this particular investment,  with total
           assets  in excess of  $5,000,000  whose  purchase  is  directed  by a
           sophisticated  person  as  described  in  Rule  506(b)(2)(ii)  of the
           Securities  Act of  1933  and  who  completed  item 4  below  of this
           questionnaire

      [_]  a  bank  as  defined  in  Section  3(a)(2)  or  a  savings  and  loan
           association or other institution defined in Section 3(a)(5)(A) of the
           Securities  Act of 1933 acting in either an  individual  or fiduciary
           capacity

      [_]  an insurance  company as defined in Section  2(13) of the  Securities
           Act of 1933

      [_]  an  employee  benefit  plan  within  the  meaning  of  Title I of the
           Employee  Retirement Income Security Act of 1974 (i) whose investment
           decision is made by a fiduciary  which is either a bank,  savings and
           loan  association,   insurance  company,  or  registered   investment
           advisor, or (ii) whose total assets exceed $5,000,000,  or (iii) if a
           self-directed  plan, whose investment  decisions are made solely by a
           person who is an accredited investor and who completed Part I of this
           questionnaire;

      [_]  a charitable,  religious, educational or other organization described
           in Section 501(c)(3) of the Internal Revenue Code, not formed for the
           purpose of this investment, with total assets in excess of $5,000,000

      [_]  an entity not  located in the U.S.  none of whose  equity  owners are
           U.S. citizens or U.S. residents

      [_]  a broker or dealer  registered  under  Section  15 of the  Securities
           Exchange Act of 1934

      [_]  a plan having assets exceeding $5,000,000  established and maintained
           by a government agency for its employees

      [_]  an individual who had individual  income from all sources during each
           of the last two years in excess of  $200,000  or the joint  income of
           you and your spouse (if married) from all sources during each of such
           years in excess of $300,000  and who  reasonably  excepts that either
           your own income from all sources  during the current year will exceed
           $200,000 or the joint income of you and your spouse (if married) from
           all sources during the current year will exceed $300,000

      [_]  an  individual  whose  net  worth  as of the date  you  purchase  the
           securities offered, together with the net worth of your spouse, be in
           excess of $1,000,000

      [_]  an entity in which all of the equity owners are accredited investors

3.    BUSINESS, INVESTMENT AND EDUCATIONAL EXPERIENCE

            Occupation__________________________________________________________
            Number of Years_____________________________________________________
            Present Employer____________________________________________________
            Position/Title______________________________________________________
            Educational Background______________________________________________

                                       2






Frequency of prior investment (check one in each column):

                          Stocks & Bonds           Venture Capital Investments
Frequently
Occasionally
Never


4.    SIGNATURE

The above information is true and correct.  The undersigned  recognizes that the
Company  and  its  counsel  are  relying  on the  truth  and  accuracy  of  such
information  in reliance on the exemption  contained in  Subsection  4(2) of the
Securities Act of 1933, as amended, and Regulation D promulgated thereunder. The
undersigned  agrees  to  notify  the  Company  promptly  of any  changes  in the
foregoing information which may occur prior to the investment.

Executed  at ___________________, on                     , 2004



                                           ------------------------------------
                                          (Signature)

                                           ------------------------------------
                                          (Title if for Entity)


                                       3




                                    Exhibit E

                         CERTIFICATE OF SUBSEQUENT SALE

Continental Stock and Transfer Co.
17 Battery Place
New York, New York 10004
Attention:  Richard Biscovich

RE: Sale of Shares of Common Stock of IRIS  International,  Inc. (the "Company")
pursuant to the Company's Prospectus dated _____________ (the "Prospectus")


Ladies and Gentlemen:

      The undersigned hereby certifies, in connection with the sale of shares of
Common Stock of the Company included in the table of Selling Stockholders in the
Prospectus,  that the undersigned has sold the shares pursuant to the Prospectus
and in a manner  described  under  the  caption  "Plan of  Distribution"  in the
Prospectus  and that such sale complies  with all  applicable  securities  laws,
including,  without  limitation,  the Prospectus  delivery  requirements  of the
Securities Act of 1933, as amended.

Selling Stockholder (the beneficial owner):
                                            ------------------------------------
Record Holder (e.g., if held in name of nominee):
                                                  ------------------------------
Restricted Stock Certificate No.(s):
                                     -------------------------------------------
Number of Shares Sold:
                       ---------------------------------------------------------
Date of Sale:
              ------------------------------------------------------------------

      In the event that you  receive a stock  certificate(s)  representing  more
shares of Common Stock than have been sold by the  undersigned,  then you should
return to the  undersigned a newly issued  certificate for such excess shares in
the name of the Record Holder and BEARING A  RESTRICTIVE  LEGEND.  Further,  you
should place a stop transfer on your records with regard to such certificate.

Very truly yours,



Dated:
       -----------------

By:
Print Name:
Title:
cc:


                                       1



                                    Exhibit F

                            Form of Lock-up Agreement


                                                                  April __, 2004
Oppenheimer & Co. Inc.
125 Broad Street, 16th Floor
New York, NY  10004

Ladies and Gentlemen:

      The undersigned  understands that  Oppenheimer & Co. Inc.  ("Oppenheimer")
has entered into a Placement  Agent Agreement with IRIS  International,  Inc., a
Delaware  corporation (the "Company"),  providing for the private placement (the
"Private  Placement")  of common stock,  $.01 par value per share of the Company
(the  "Common  Stock"),  and  warrants to purchase  Common  Stock  (collectively
referred to herein as the "Securities").

      To induce  Oppenheimer  to  continue  its efforts in  connection  with the
Private Placement, the undersigned hereby agrees that, without the prior written
consent of Oppenheimer,  it will not,  during the period  commencing on the date
hereof  and  ending  upon the later of:  (a)  ninety  (90)  days  following  the
effective date of a registration statement in which the Securities are included;
or (b) six (6) months  after the final  closing of the Private  Placement  (such
earlier date referred to as the "Termination  Date"), (i) offer,  pledge,  sell,
contract to sell,  sell any option or contract to purchase,  purchase any option
or contract to sell,  grant any option,  right or warrant to  purchase,  lend or
otherwise  transfer or dispose of, directly or indirectly,  any shares of Common
Stock or any securities  convertible  into or exercisable  or  exchangeable  for
Common  Stock  whether now owned or hereafter  acquired,  or (ii) enter into any
swap or other arrangement that transfers to another, in whole or in part, any of
the economic  consequences  of ownership of the Common  Stock,  whether any such
transaction  described  in clause (i) or (ii) above is to be settled by delivery
of Common Stock or such other  securities,  in cash or otherwise.  The foregoing
sentence shall not apply to: (A) the transfer of shares of Common Stock or other
securities  of the  Company  by the  undersigned  as a gift  or  gifts;  (B) the
transfer  of shares of Common  Stock or other  securities  of the Company by the
undersigned  to its  affiliates,  as such term is  defined in Rule 405 under the
Securities  Act of 1933,  as amended;  and (C) the  transfer of shares of Common
Stock by will or intestacy or to a trust; provided,  that, in the case of clause
(A),  (B)  or  (C)  above,   the   recipient(s),   donee(s)  or   transferee(s),
respectively,  agrees in writing as a condition precedent to such issuance, gift
or transfer to be bound by the terms of this  agreement.  The  undersigned  also
agrees and consents to the Company's entry of stock transfer  instructions  with
the Company's  transfer agent against the transfer of shares of capital stock of
the Company issued or issuable to the undersigned.  In addition, the undersigned
agrees that,  without the prior  written  consent of  Oppenheimer,  it will not,
during the period  commencing on the date hereof and ending upon the Termination
Date,  make  any  demand  for  or  exercise  any  right  with  respect  to,  the
registration of any shares of Common Stock or any security  convertible  into or

                                       1


exercisable  or  exchangeable  for Common  Stock.  Oppenheimer  may, in its sole
discretion, waive in writing adherence to the terms of this agreement.

      This agreement shall terminate,  become null and void and be of no further
force or effect if the Placement  Agent  Agreement dated as of February 25, 2004
by and between the Company and Oppenheimer is terminated  (other than provisions
thereof that survive termination) prior to the closing of the Private Placement.

                                                Very truly yours,



                                                Print Name
                                                (Address)









                                       2