THIS COMMON STOCK PURCHASE WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"). THE HOLDER HEREOF, BY PURCHASING
THIS COMMON STOCK PURCHASE WARRANT, AGREES FOR THE BENEFIT OF THE COMPANY THAT
SUCH SECURITIES MAY BE OFFERED, SOLD OR OTHERWISE TRANSFERRED ONLY (A) TO THE
COMPANY, (B) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES
ACT, OR (C) IF REGISTERED UNDER THE SECURITIES ACT AND ANY APPLICABLE STATE
SECURITIES LAWS. IN ADDITION, A SECURITIES PURCHASE AGREEMENT ("PURCHASE
AGREEMENT"), DATED THE DATE HEREOF, A COPY OF WHICH MAY BE OBTAINED FROM THE
COMPANY AT ITS PRINCIPAL EXECUTIVE OFFICE, CONTAINS CERTAIN ADDITIONAL
AGREEMENTS AMONG THE PARTIES, INCLUDING, WITHOUT LIMITATION, PROVISIONS WHICH
LIMIT THE EXERCISE RIGHTS OF THE HOLDER AND SPECIFY MANDATORY REDEMPTION
OBLIGATIONS OF THE COMPANY.

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

                                  AVITAR, INC.

                          COMMON STOCK PURCHASE WARRANT

                                                              No. 1
Number of shares: 100,000                     Holder:  GCA Strategic Investment
Fund Limited
Expiration Date:  May 25, 2009                Mechanics Building
                                              12 Church Street
Purchase Price Per Share:  $0.126             Hamilton, Bermuda HM11

For  identification  only.  The  governing  terms of this  Warrant are set forth
below.

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

Avitar, Inc., a Delaware corporation (the "Company"), hereby certifies that, for
value  received,  GCA  Strategic  Investment  Fund  Limited or its assigns  (the
"Holder"),  is entitled,  subject to the terms set forth below, to purchase from
the  Company at any time or from time to time after the date hereof and prior to
the fifth  anniversary  hereof (the  "Exercise  Period"),  at the Purchase Price
hereinafter set forth, One Hundred  Thousand  (100,000) shares of the fully paid
and nonassessable  shares of common stock of the Company, no par value per share
(the "Common  Stock").  The number and  character of such shares of Common Stock
and the Purchase Price are subject to adjustment as provided herein.

     The purchase price per share of Common Stock issuable upon exercise of this
Warrant (the "Purchase  Price") shall  initially be equal to 105% of the closing
bid price for the Common Stock,  as reported on Bloomberg,  L.P., on the trading
day immediately prior to Closing.





     Capitalized terms used herein not otherwise defined shall have the meanings
ascribed thereto in the Purchase Agreement.  As used herein the following terms,
unless the context otherwise requires, have the following respective meanings:

          (a) The term "Company" shall include Avitar,  Inc. and any corporation
     that shall succeed or assume the obligations of such corporation hereunder.

          (b) The term "Common Stock"  includes (a) the Company's  common stock,
     $0.01 par  value per  share,  (b) any other  capital  stock of any class or
     classes  (however  designated)  of the Company,  authorized on or after the
     date hereof, the Holders of which shall have the right,  without limitation
     as to  amount,  either  to all or to a  share  of the  balance  of  current
     dividends  and  liquidating  dividends  after the payment of dividends  and
     distributions  on any shares  entitled  to  preference,  and the Holders of
     which shall  ordinarily,  in the absence of  contingencies,  be entitled to
     vote for the  election of a majority  of  directors  of the  Company  (even
     though the right so to vote has been  suspended by the  happening of such a
     contingency)  and (c) any other  securities  into which or for which any of
     the  securities  described  in (a) or (b)  may be  converted  or  exchanged
     pursuant to a plan of  recapitalization,  reorganization,  merger,  sale of
     assets or otherwise.

          (c) The term "Other Securities" refers to any stock (other than Common
     Stock) and other  securities of the Company or any other person  (corporate
     or otherwise) that the Holder of this Warrant at any time shall be entitled
     to receive,  or shall have  received,  on the exercise of this Warrant,  in
     lieu of or in  addition  to  Common  Stock,  or that at any  time  shall be
     issuable  or shall have been issued in exchange  for or in  replacement  of
     Common Stock or Other Securities pursuant to Section 4 or otherwise.

1. Exercise of Warrant.

          1.1 Method of Exercise.

          (a) This Warrant may be exercised in whole or in part (but not as to a
     fractional share of Common Stock), at any time and from time to time during
     the  Exercise  Period  by the  Holder  hereof  by  delivery  of a notice of
     exercise (a "Notice of Exercise") substantially in the form attached hereto
     as Exhibit A via facsimile to the Company.  Promptly  thereafter the Holder
     shall  surrender  this  Warrant  (if the  entire  amount of the  Warrant is
     subject to the Notice of Exercise) to the Company at its  principal  office
     via  overnight  delivery  service,  accompanied  by payment of the Purchase
     Price  multiplied  by the  number of shares of Common  Stock for which this
     Warrant is being exercised (the "Exercise Price").  Payment of the Exercise
     Price  shall be made,  at the  option of the  Holder,  (i) by check or bank
     draft payable to the order of the Company,  or (ii) by wire transfer to the
     account of the  Company.  Upon  exercise,  the Holder  shall be entitled to
     receive within three Trading Days of the Exercise Date (as defined herein),
     one or more  certificates,  issued in the Holder's  name or in such name or
     names as the Holder may  direct,  subject to the  limitations  on  transfer
     contained  herein,  for the number of shares of Common Stock so  purchased.
     The shares of Common Stock so purchased  shall be deemed to be issued as of
     the close of business on the date on which the Company  shall have received
     from the  Holder  payment  in full of the  Exercise  Price  (the  "Exercise
     Date").

          (b) Upon exercise of a portion of this Warrant in accordance  with the
     terms  hereof,  records  showing  the amount so  exercised  and the date of
     exercise shall be maintained on a ledger substantially in the form of Annex
     B attached hereto (an originally signed and executed copy of which shall be
     delivered to the Company with each Notice of  Exercise).  The Company shall
     maintain the  originally  signed and  executed  ledger and the Holder shall
     maintain a copy  thereof.  Upon  execution  of the exercise of the Warrants
     contemplated  by the Notice of Exercise,  the Company  shall deliver to the
     Holder a copy of Annex B signed and executed by the Company, and the Holder
     shall deliver to the Company a copy of Annex B signed by the Holder.  It is
     specifically  contemplated  that the Company  shall act as the  calculation
     agent for all  exercises of this Warrant.  The Holder and any assignee,  by
     acceptance of this Warrant,  acknowledges and agrees that, by reason of the
     provisions  of this  paragraph,  following an exercise of a portion of this
     Warrant,  the number of shares of Common Stock  represented by this Warrant
     will be the amount  indicated on Annex B attached hereto (which may be less
     than the amount stated on the face hereof).

          (c) In the  event  there is a  dispute  as to the  number of shares of
     Common  Stock the Holder is  entitled  to  receive  upon  exercise  of this
     Warrant,  the Company shall issue to the Holder the number of shares not in
     dispute  and the  Company  and the Holder  will use their  best  efforts to
     resolve such dispute  within one  Business Day  following  the receipt of a
     Notice of Exercise.  If such dispute cannot be resolved within such one-day
     period,  the  Company  and  the  Holder  shall  submit  the  dispute  to an
     independent  accountant  mutually agreed upon by the Company and the Holder
     to make a final and binding  determination  of the number of shares owed to
     the Holder.  The Company  shall issue shares of Common Stock owed to Holder
     as a result of the  resolution  of the  dispute  within two  Business  Days
     following the receipt of the accountant's independent determination.

          1.2  Regulation  D  Restrictions.  The Holder  hereof  represents  and
     warrants to the Company that it has acquired  this Warrant and  anticipates
     acquiring the shares of Common Stock  issuable upon exercise of the Warrant
     solely for its own account for  investment  purposes and not with a view to
     or for resale of such  securities  unless such  resale has been  registered
     with the  Commission or an applicable  exemption is available  therefor and
     provided that the Holder shall have  furnished to the Company an opinion of
     counsel in form and substance  reasonably  satisfactory to the Company,  to
     the effect that such transfer is exempt from the registration  requirements
     of the Securities Act and any applicable state securities laws.

          1.3  Company  Acknowledgment.  The  Company  will,  at the time of the
     exercise of this Warrant, upon request of the Holder hereof, acknowledge in
     writing its continuing obligation to afford to such Holder the registration
     rights to which  such  Holder  shall  continue  to be  entitled  after such
     exercise  in  accordance  with  the  provisions  of a  Registration  Rights
     Agreement dated the date hereof (the "Registration Rights Agreement").

          1.4 Exercise. Notwithstanding the rights of the Holder to exercise all
     or a portion of this  Warrant as described  herein,  such  exercise  rights
     shall be limited,  solely to the extent set forth in the Purchase Agreement
     as if such provisions were specifically set forth herein.

2. Delivery of Stock  Certificates,  etc., on Exercise.  As soon as  practicable
after the exercise of this  Warrant,  and in any event within three (3) Business
Days thereafter,  the Company at its expense (including the payment by it of any
applicable  issue,  stamp or transfer taxes) will cause to be issued in the name
of and delivered to the Holder thereof, or, to the extent permissible hereunder,
to such other person as such Holder may direct,  a certificate  or  certificates
for the number of fully paid and nonassessable  shares of Common Stock (or Other
Securities)  to which such Holder shall be entitled on such  exercise,  plus, in
lieu of any fractional  share to which such Holder would  otherwise be entitled,
cash equal to such fraction  multiplied by the then  applicable  Purchase Price,
together with any other stock or other securities and property  (including cash,
where  applicable) to which such Holder is entitled upon such exercise  pursuant
to Section 1 or otherwise.

3.  Adjustment for  Extraordinary  Events.  The Purchase Price to be paid by the
Holder upon exercise of this Warrant,  and the consideration to be received upon
exercise of this Warrant,  shall be adjusted in case at any time or from time to
time pursuant to Article 11 of the Purchase Agreement as if such provisions were
specifically set forth herein.

4. No  Impairment.  The Company  will not, by amendment  of its  Certificate  of
Incorporation or through any reorganization,  transfer of assets, consolidation,
merger, dissolution,  issue or sale of securities or any other voluntary action,
avoid or seek to avoid the observance or performance of any of the terms of this
Warrant,  but will at all times in good faith  assist in the carrying out of all
such  terms  and in the  taking  of  all  such  action  as may be  necessary  or
appropriate in order to protect the rights of the Holder of this Warrant against
impairment.  Without  limiting the generality of the foregoing,  the Company (a)
will not  increase  the par  value of any  shares  of  stock  receivable  on the
exercise of this Warrant above the amount payable therefor on such exercise, (b)
will take all such action as may be necessary or  appropriate  in order that the
Company  may validly and  legally  issue fully paid and  unassessable  shares of
stock  on the  exercise  of this  Warrant,  and (c)  will  not  transfer  all or
substantially all of its properties and assets to any other person (corporate or
otherwise),  or  consolidate  with or merge into any other  person or permit any
such person to consolidate with or merge into the Company (if the Company is not
the  surviving  person),  unless such other  person  shall  expressly  assume in
writing and will be bound by all the terms of this Warrant.

5. Certificate as to Adjustments. In each case of any adjustment or readjustment
in the shares of Common Stock (or Other Securities)  issuable on the exercise of
this Warrant, the Company will promptly cause its principal financial officer to
compute such  adjustment or  readjustment  in accordance  with the terms of this
Warrant and prepare a certificate  setting forth such adjustment or readjustment
and showing in detail the facts upon which such  adjustment or  readjustment  is
based,  including a statement of (a) the consideration received or receivable by
the  Company for any  additional  shares of Common  Stock (or Other  Securities)
issued or sold or deemed to have been  issued or sold,  (b) the number of shares
of Common Stock (or Other  Securities)  outstanding or deemed to be outstanding,
and (c) the  Purchase  Price and the  number  of  shares  of Common  Stock to be
received  upon  exercise of this Warrant,  in effect  immediately  prior to such
issue or sale and as adjusted and  readjusted as provided in this  Warrant.  The
Company will  forthwith  mail a copy of each such  certificate  to the Holder of
this Warrant, and will, on the written request at any time of the Holder of this
Warrant,  furnish to such Holder a like  certificate  setting forth the Purchase
Price at the time in effect and showing how it was calculated.

6. Notices of Record Date, etc.

          In the event of

          (a) any taking by the  Company of a record of the Holders of any class
     of securities  for the purpose of determining  the Holders  thereof who are
     entitled to receive any  dividend  or other  distribution,  or any right to
     subscribe  for,  purchase or  otherwise  acquire any shares of stock of any
     class or any other  securities or property,  or to receive any other right,
     or

          (b) any capital reorganization of the Company, any reclassification or
     recapitalization of the capital stock of the Company or any transfer of all
     or  substantially  all the  assets of the  Company to or  consolidation  or
     merger of the Company with or into any other Person, or

          (c)  any  voluntary  or   involuntary   dissolution,   liquidation  or
     winding-up of the Company,

then and in each such event the  Company  will mail or cause to be mailed to the
Holder of this Warrant a notice specifying (i) the date on which any such record
is to be taken for the  purpose of such  dividend,  distribution  or right,  and
stating the amount and character of such dividend,  distribution  or right,  and
(ii)   the   date  on   which   any   such   reorganization,   reclassification,
recapitalization,  transfer, consolidation,  merger, dissolution, liquidation or
winding-up  is to take place,  and the time,  if any, as of which the Holders of
record of Common Stock (or Other Securities) shall be entitled to exchange their
shares of Common Stock (or Other  Securities)  for  securities or other property
deliverable   on  such   reorganization,   reclassification,   recapitalization,
transfer,  consolidation,  merger, dissolution,  liquidation or winding-up. Such
notice  shall be mailed  at least 20 days  prior to the date  specified  in such
notice on which any action is to be taken.

7. Reservation of Stock, etc. Issuable on Exercise of Warrant.  The Company will
at all times reserve and keep available, solely for issuance and delivery on the
exercise of this Warrant,  all shares of Common Stock (or Other Securities) from
time to time issuable on the exercise of this Warrant.

8.  Exchange of Warrant.  On surrender  for exchange of this  Warrant,  properly
endorsed and in compliance  with the  restrictions  on transfer set forth in the
legend on the face of this Warrant,  to the Company,  the Company at its expense
will issue and deliver to or on the order of the Holder thereof a new Warrant of
like  tenor,  in the name of such  Holder or as such  Holder (on payment by such
Holder of any applicable transfer taxes) may direct, calling in the aggregate on
the face or faces thereof for the number of shares of Common Stock called for on
the face of the Warrant so  surrendered  or for such lesser  number of shares of
Common  Stock as may be  reflected on the Warrant  Exercise  Ledger  attached as
Annex B.

9. Replacement of Warrant. On receipt of evidence reasonably satisfactory to the
Company of the loss,  theft,  destruction  or mutilation of this Warrant and, in
the case of any such loss, theft or destruction of this Warrant,  on delivery of
an indemnity agreement or security reasonably satisfactory in form and amount to
the  Company  or,  in  the  case  of  any  such  mutilation,  on  surrender  and
cancellation  of this  Warrant,  the  Company at its  expense  will  execute and
deliver, in lieu thereof, a new Warrant of like tenor.

10. Remedies.  The Company  stipulates that the remedies at law of the Holder of
this Warrant in the event of any default or threatened default by the Company in
the  performance of or compliance  with any of the terms of this Warrant are not
and will not be adequate,  and that such terms may be specifically enforced by a
decree for the specific  performance of any agreement  contained herein or by an
injunction against a violation of any of the terms hereof or otherwise.

11. Negotiability, etc.. This Warrant is issued upon the following terms, to all
of which each Holder or owner hereof by the taking hereof consents and agrees:

     (a) until this  Warrant is  transferred  on the books of the  Company,  the
Company may treat the registered  Holder hereof as the absolute owner hereof for
all purposes, notwithstanding any notice to the contrary; and

     (b) this Warrant may not be sold,  transferred or assigned  except pursuant
to an effective  registration  statement under the Securities Act or pursuant to
an applicable exemption therefrom.

12.  Registration  Rights.  The Company is  obligated  to register the shares of
Common Stock issuable upon exercise of this Warrant in accordance with the terms
of the Registration Rights Agreement.

13. Warrant Redemption.  Upon occurrence of the events described in Sections 3.4
and 10.4(c) of the Purchase  Agreement,  the Company,  at the request of Holder,
shall redeem all  outstanding  Warrants that remain  unexercised at a redemption
price  equal  to the  greater  of (x) an  appraised  value of the  Warrants,  as
determined by Black Sholes,  on the date they are called for  redemption and (y)
the number of Warrants being redeemed multiplied by the excess of (A) the Market
Price of the Common Shares over (B) the exercise price of the Warrants.  "Market
Price"  shall  mean the volume  weighted  average  sales  price as  reported  by
Bloomberg,  L.P. for the three consecutive trading days immediately prior to the
date that the Warrants are called for redemption.

14. Notices,  etc.. All notices and other communications from the Company to the
Holder of this Warrant  shall be mailed by first class  registered  or certified
mail, postage prepaid, at such address as may have been furnished to the Company
in writing by such Holder or, until any such Holder furnishes to the Company any
address, then to, and at the address of, the last Holder of this Warrant who has
so furnished an address to the Company.

15.  Miscellaneous.  This  Warrant and any term  hereof may be changed,  waived,
discharged  or terminated  only by an instrument in writing  signed by the party
against which  enforcement of such change,  waiver,  discharge or termination is
sought.  This Warrant  shall be construed  and enforced in  accordance  with and
governed by the  internal  laws of the State of  Delaware.  The headings in this
Warrant are for the purposes of reference only, and shall not limit or otherwise
affect  any of the terms  hereof.  The  invalidity  or  unenforceability  of any
provision  hereof shall in no way affect the validity or  enforceability  of any
other provision.

                            [Signature Page Follows]




DATED as of May 25, 2004.


                                  AVITAR, INC.


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

[Corporate Seal]


Attest:

By:
   -----------------------------------------
     ________________________Secretary







                                    EXHIBIT A

                        FORM OF NOTICE EXERCISE - WARRANT
                                        (To be executed only upon exercise
                                        of the Warrant in whole or in part)

To ____________________________________________

         The undersigned registered Holder of the accompanying Warrant, hereby
exercises such Warrant or portion thereof for, and purchases thereunder,
__________1 shares of Common Stock (as defined in such Warrant) and herewith
makes payment therefor in the amount and manner set forth below, as of the date
written below. The undersigned requests that the certificates for such shares of
Common Stock be issued in the name of, and
delivered to,             whose address is
              ------------                 ----------------------------------
..

         The Exercise Price is paid as follows:

|_|      Certified Bank draft payable to the Company in the amount of $_______.
|_|      Wire transfer to the account of the Company in the amount of $_______.

     Upon  exercise  pursuant to this Notice of Exercise,  the Holder will be in
compliance  with the  Limitation  on  Exercise  (as  defined  in the  Securities
Purchase Agreement pursuant to which this Warrant was issued).

     The Holder of the shares of Common  Stock  received  upon  exercise  of the
Warrant (the "Common  Shares"),  covenants and agrees that the Common Shares are
being acquired as an investment and not with a view to the distribution  thereof
in  violation  of the  Securities  Act and that  the  Common  Shares  may not be
transferred, sold, assigned,  hypothecated or otherwise disposed of, in whole or
in part except as  provided in the legend on the first page of this  Warrant and
provided that the Holder shall have  furnished the Company an opinion of counsel
in form and  substance  reasonably  acceptable to the Company to the effect that
such transfer is exempt from the registration requirements of the Securities Act
and any applicable state securities laws.*

Date:
     -------------------------      -------------------------------------------
                                    (Name must conform to name of Holder as
                                    specified on the face of the Warrant)

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

                                   Address of Holder:
                                                              -----------------

Date of exercise:
                 ------------------------------------


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