__________________________________________



                               CUNO INCORPORATED

                                      AND

                    CHASEMELLON SHAREHOLDER SERVICES L.L.C.
                                AS RIGHTS AGENT

                                RIGHTS AGREEMENT

                       DATED AS OF ________________, 1996



                   __________________________________________

 
                               TABLE OF CONTENTS


                                                                                                    PAGE
                                                                                              
Section 1.    Certain Definitions..................................................................    1
Section 2.    Appointment of Rights Agent..........................................................    5
Section 3.    Issuance of Right Certificates.......................................................    6
Section 4.    Form of Right Certificate............................................................    7
Section 5.    Countersignature and Registration....................................................    8
Section 6.    Transfer, Split-Up, Combination and Exchange of Right Certificates; Mutilated,
              Destroyed, Lost or Stolen Right Certificate..........................................    9
Section 7.    Exercise of Rights; Purchase Price; Expiration Date of Rights........................   10
Section 8.    Cancellation and Destruction of Right Certificates...................................   12
Section 9.    Reservation and Availability of Preferred Shares.....................................   12
Section 10.   Preferred Shares Record Date.........................................................   14
Section 11.   Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights..........   14
Section 12.   Certificate of Adjusted Purchase Price or Number of Shares...........................   21
Section 13.   Consolidation, Merger or Sale or Transfer of Assets or Earning Power.................   22
Section 14.   Fractional Rights and Fractional Shares..............................................   24
Section 15.   Rights of Action.....................................................................   26
Section 16.   Agreement of Right Holders...........................................................   26
Section 17.   Right Certificate Holder Not Deemed a Stockholder....................................   27
Section 18.   Concerning the Rights Agent..........................................................   28
Section 19.   Merger or Consolidation or Change of Name of Rights Agent............................   28
Section 20.   Duties of Rights Agent...............................................................   29
Section 21.   Change of Rights Agent...............................................................   31
Section 22.   Issuance of New Right Certificates...................................................   32
Section 23.   Redemption and Termination...........................................................   33
Section 24.   Exchange.............................................................................   34
Section 25.   Notice of Certain Events.............................................................   36
Section 26.   Notices..............................................................................   36
Section 27.   Supplements and Amendments...........................................................   37
Section 28.   Determination and Actions by the Board of Directors, etc.............................   38
Section 29.   Successors...........................................................................   39
Section 30.   Benefits of this Agreement...........................................................   39
Section 31.   Severability.........................................................................   39
Section 32.   Governing Law........................................................................   39
Section 33.   Counterparts.........................................................................   39
Section 34.   Descriptive Headings.................................................................   39
DEFINED TERM CROSS REFERENCE SHEET
Acquiring Person..........................................................................  Section 1(a)
Act.......................................................................................  Section 1(b)
Adjustment Shares....................................................................  Section 11(a)(ii)
Adjusted Number of Shares...........................................................  Section 11(a)(ill)
Adjusted Purchase Price.............................................................  Section 11(a)(iii)
 


                                       i

 

                                                                                                                  
Affiliate............................................................................................................Section 1(c)
Agreement.................................................................................................................Preface
Appointment of Rights Agent.............................................................................................Section 2
Associate............................................................................................................Section 1(c)
Beneficial Owner.....................................................................................................Section 1(d)
Beneficially Own.....................................................................................................Section 1(d)
Business Day.........................................................................................................Section 1(e)
Capital Stock Equivalent.......................................................................................Section 11(a)(iii)
Close of Business....................................................................................................Section 1(f)
Common Shares........................................................................................................Section 1(g)
Corporation...............................................................................................................Preface
Current Per Market Price.............................................................................................Section 11(d)
Current Per Share Market Price....................................................................................Section 11(d)(1)
Distribution Date.....................................................................................................Section 3(a)
Equivalent Preferred Shares.........................................................................................Section 11 (b)
Exchange Act..........................................................................................................Section 1(c)
Exchange Ratio.......................................................................................................Section 24(a)
Final Expiration Date.................................................................................................Section 7(a)
Interested Stockholder.................................................................................................Section 10)
Permitted Offer.......................................................................................................Section 1(k)
Person................................................................................................................Section 1(l)
Preferred Shares......................................................................................................Section 1(m)
Principal Party......................................................................................................Section 13(b)
Proration Factor................................................................................................Section 11(a)(iii)
Purchase Price........................................................................................................Section 4(a)
Record Date................................................................................................................Preface
Redemption Date.......................................................................................................Section 7(a)
Redemption Price........................................................................................................Section 23
Right......................................................................................................................Preface
Right Certificate.....................................................................................................Section 3(a)
Rights Agent...............................................................................................................Preface
Rights Agreement.........................................................................................................Section 3
Section 11(a)(ii) Event...............................................................................................Section 1(o)
Section 13 Event......................................................................................................Section 1(p)
Security..........................................................................................................Section 11(d)(i)
Shares Acquisition Date...............................................................................................Section 1(q)
Subsidiary............................................................................................................Section 1(r)
Summary of Rights.....................................................................................................Section 3(b)
Then Outstanding.................................................................................................Section 1(d)(iii)
Trading Day.......................................................................................................Section 11(d)(1)
Transaction...........................................................................................................Section 1(s)
Transaction Person....................................................................................................Section 1(t)
Triggering Event......................................................................................................Section 1(u)
Voting Securities....................................................................................................Section 13(a)
 
                                       ii

 
                               RIGHTS AGREEMENT

     RIGHTS AGREEMENT, dated as of ________________, 1996 (the "Agreement"),
between CUNO Incorporated, a Delaware corporation (the "Corporation"), and
ChaseMellon Shareholder Services L.L.C. (the "Rights Agent").

     The Board of Directors of the Corporation has authorized and declared a
dividend of one preferred share purchase right (a "Right") for each Common Share
(as hereinafter defined) of the Corporation outstanding at the close of business
on ____________________, 1996 (the "Record Date"), each Right representing the
right to purchase one one-hundredth of a Preferred Share (as hereinafter
defined), upon the terms and subject to the conditions herein set forth, and has
further authorized and directed the issuance of one Right with respect to each
Common Share that shall become outstanding between the Record Date and the
earliest of the Distribution Date, the Redemption Date or the Final Expiration
Date (as such terms are hereinafter defined); provided, however, that Rights may
be issued with respect to Common Shares that shall become outstanding after the
Distribution Date and prior to the earlier of the Redemption Date and the Final
Expiration Date in accordance with the provisions of Section 22 of this
Agreement.

     Accordingly, in consideration of the premises and the mutual agreements
herein set forth, the parties hereby agree as follows:

     Section 1.  Certain Definitions.

     For purposes of this Agreement, the following terms have the meanings
indicated:

     (a) "Acquiring Person" shall mean any Person who or which, together with
all Affiliates and Associates of such Person, shall be the Beneficial Owner of
15% or more of the then outstanding Common Shares (other than as a result of a
Permitted Offer (as hereinafter defined)) or was such a Beneficial Owner at any
time after the date hereof, whether or not such person continues to be the
Beneficial Owner of 15% or more of the then outstanding Common Shares.
Notwithstanding the foregoing, (A) the term "Acquiring Person" shall not include
(i) the Corporation, (ii) any Subsidiary of the Corporation, (iii) any employee
benefit plan of the Corporation or of any Subsidiary of the Corporation, (iv)
any Person or entity organized, appointed or established by the Corporation for
or pursuant to the terms of any such plan, or (v) any Person, who or which
together with all Affiliates and Associates of such Person becomes the
Beneficial Owner of 15% or more of the then outstanding Common Shares as a
result of the acquisition of Common Shares directly from the Corporation, and
(B) no Person shall be deemed to be an "Acquiring Person" either (X) as a result
of the acquisition of Common Shares by the Corporation which, by reducing the
number of Common Shares outstanding, increases the proportional number of shares
beneficially owned by such Person together with all Affiliates and Associates of
such Person; except that if (i) a Person would become an Acquiring Person (but
for the operation of this subclause (X) as a result of the acquisition of Common
Shares by the Corporation, and (ii) after such share acquisition by the
Corporation, such Person, or an Affiliate or Associate of such Person, becomes
the Beneficial Owner of any additional Common Shares, then such Person shall be
deemed an Acquiring

 
Person, or (Y) if the Board of Directors of the Corporation determines in good
faith that a Person who would otherwise be an "Acquiring Person", as defined
pursuant to the foregoing provisions of this Section 1(a), has become such
inadvertently, and such Person divests as promptly as practicable a sufficient
number of Common Shares so that such Person would no longer be an Acquiring
Person, as defined pursuant to the foregoing provisions of this Section 1(a),
then such Person shall not be deemed to be an "Acquiring Person" for any
purposes of this Agreement.

     (b) "ACT" shall mean the Securities Act of 1933, as amended and as in
effect on the date of this Agreement.

     (c) "AFFILIATE" and "ASSOCIATE" shall have the respective meanings ascribed
to such terms Rule 12b-2 of the General Rules and Regulations under the
Securities Exchange Act of 1934, as amended and in effect on the date of this
Agreement (the "EXCHANGE ACT") provided that the limited partners of a limited
partnership shall not be deemed to be Associates of such limited partnership
solely by virtue of their limited partnership interest.

     (d) A Person shall be deemed the "BENEFICIAL OWNER" of and shall be deemed
to "BENEFICIALLY OWN" any securities:

         (i) of which such Person or any of such Person's Affiliates or
Associates, directly or indirectly, has "beneficial ownership" as determined in
accordance with Rule 13d-3 of the General Rules and Regulations under the
Exchange Act;
    
         (ii) which such Person or any of such Person's Affiliates or
Associates, directly or indirectly, has (A) the right to acquire (whether such
right is exercisable immediately or only after the passage of time) pursuant to
any agreement, arrangement or understanding, or upon the exercise of conversion
rights, exchange rights, rights (other than the Rights), warrants or options, or
otherwise; provided, however, that a Person shall not be deemed the Beneficial
Owner of, or to beneficially own, securities tendered pursuant to a tender or
exchange offer made by or on behalf of such Person or any of such Person's
Affiliates or Associates until such tendered securities are accepted for
purchase or exchange; or (B) the right to vote or dispose of pursuant to any
agreement, arrangement or understanding; provided, however, that a Person shall
not be deemed the Beneficial Owner of, or to beneficially own, any security if
the agreement, arrangement or understanding to vote such security (1) arises
solely from a revocable proxy or consent given to such Person in response to a
public proxy or consent solicitation made pursuant to, and in accordance with,
the applicable rules and regulations promulgated under the Exchange Act and (2)
is not also then reportable on Schedule 13D or Schedule 13G under the Exchange
Act (or any comparable or successor report); or

         (iii) which are beneficially owned, directly or indirectly, by any
other Person (or any Affiliate or Associate thereof) with which such Person (or
any of such Person's Affiliates or Associates) has any agreement, arrangement or
understanding (other than customary agreements with and between underwriters and
selling group members with respect to a bona fide public offering of securities)
relating to the acquisition, holding, voting (except to the extent contemplated
by the proviso to Section l(d)(ii)(B)) or disposing of any securities of the
Corporation.

                                       2


     (e) "Business Day" shall mean any day other than a Saturday, Sunday or U.S.
federal holiday.

     (f) "Close of Business" on any given date shall mean 5:00 P.M., Meriden,
Connecticut time, on such date; provided, however, that if such date is not a
Business Day it shall mean 5:00 P.M., Meriden, Connecticut time, on the next
succeeding Business Day.

     (g) "Common Shares" when used with reference to the Corporation shall mean
the shares of Common Stock, par value $0.001 per share, of the Corporation or,
in the event of a subdivision, combination or consolidation with respect to such
shares of Common Stock, the shares of Common Stock resulting from such
subdivision, combination or consolidation.  "Common Shares" when used with
reference to any Person other than the Corporation shall mean the capital stock
(or equity interest) with the greatest voting power of such other Person or, if
such other Person is a Subsidiary of another Person, the Person or Persons which
ultimately control such first-mentioned Person.

     (h) "Distribution Date" shall have the meaning set forth in Section 3
hereof.

     (i) "Final Expiration Date" shall have the meaning set forth in Section 7
hereof.

     (j) "Interested Stockholder" shall mean any Acquiring Person or any
Affiliate or Associate of an Acquiring Person or any other Person in which any
such Acquiring Person, Affiliate or Associate has an interest, or any other
Person acting directly or indirectly on behalf of or in concert with any such
Acquiring Person, Affiliate or Associate.

     (k) "Permitted Offer" shall mean a tender or exchange offer which is for
all outstanding Common Shares at a price and on terms determined, prior to the
purchase of shares under such tender or exchange offer, by at least a majority
of the members of the Board of Directors who are not officers of the Corporation
and who are not Acquiring Persons or Affiliates, Associates, nominees or
representatives of an Acquiring Person or a Transaction Person, to be adequate
(taking into account all factors that such Directors deem relevant including,
without limitation, prices that could reasonably be achieved if the Corporation
or its assets were sold on an orderly basis designed to realize maximum value)
and otherwise in the best interests of the Corporation and its stockholders
(other than the Person or any Affiliate or Associate thereof on whose basis the
offer is being made) taking into account all factors that such directors may
deem relevant.

     (l) "Person" shall mean any individual, firm, partnership, corporation,
trust, association, joint venture or other entity, and shall include any
successor (by merger or otherwise) of such entity.

     (m) "Preferred Shares" shall mean shares of Series A Junior Participating
Preferred Stock, with a par value of $0.001 per share of the Corporation having
the relative rights, preferences and limitations set forth in the Form of
Certificate of Designations attached to this Agreement as Exhibit A.

     (n) "Redemption Date" shall have the meaning set forth in Section 7 hereof.

                                       3

 
     (o) "Section 11(a)(ii) Event" shall mean any event described in Section
11(a)(ii) hereof.

     (p) "Section 13 Event" shall mean any event described in clause (x), (y) or
(z) of Section 13(a) hereof.

     (q) "Shares Acquisition Date" shall mean the first date of public
announcement (which, for purposes of this definition, shall include, without
limitation, a report filed pursuant to the Exchange Act) by the Corporation or
an Acquiring Person that an Acquiring Person has become such; provided, that, if
such Person is determined not to have become an Acquiring Person pursuant to
Section l(a)(Y) hereof, then no Shares Acquisition Date shall be deemed to have
occurred.

     (r) "Subsidiary" of any Person shall mean any corporation or other Person
of which a majority of the voting power of the voting equity securities or
equity interest is owned, directly or indirectly, by such Person.

     (s) "Transaction" shall mean any merger, consolidation or sale of assets
described in Section 13(a) hereof or any acquisition of shares of Common Stock
of the Company which would result in a Person becoming a Transaction Person.

     (t) "Transaction Person" with respect to a Transaction shall mean (x) any
Person who (i) is or will become an Acquiring Person or a Principal Party (as
such term is defined in Section 13(b) hereof) if the Transaction were to be
consummated and (ii) directly or indirectly proposed or nominated a director of
the Company which director is in office at the time of consideration of the
Transaction, or (y) an Affiliate or Associate of such a Person.

     (u) "Triggering Event" shall mean any Section 11(a)(ii) Event or any
Section 13 Event.

     Section 2.  Appointment of Rights Agent.

     The Corporation hereby appoints the Rights Agent to act as agent for the   
Corporation and the holders of the Rights (who, in accordance with Section 3
hereof, shall prior to the Distribution Date also be the holders of Common 
Shares) in accordance with the terms and conditions hereof, and the Rights Agent
hereby accepts such appointment.  The Corporation may from time to time appoint 
such co-Rights Agents as it may deem necessary or desirable.

     Section 3.  Issuance of Right Certificates

     (a)  Until the earlier of (i) the Shares Acquisition Date, (ii) the close
of business on the tenth day (or such later date as may be determined by action
of the Corporation's Board of Directors) after the date of the commencement by
any Person (other than the Corporation, any Subsidiary of the Corporation, any
employee benefit plan of the Corporation or of any Subsidiary of the Corporation
or any Person or entity organized, appointed or established by the Corporation
for or pursuant to the terms of any such plan) of, or of the first public
announcement of the intention of any Person (other than the Corporation, any
Subsidiary of the Corporation, any employee benefit plan of the Corporation or
of any Subsidiary of the Corporation or any Person or entity organized,
appointed or established by the Corporation for

                                       4


 
or pursuant to the terms of any such plan) to commence (which intention to
commence remains in effect for five Business Days after such announcement), a
tender or exchange offer the consummation of which would result in any Person
becoming an Acquiring Person or (iii) twenty days prior to the date on which a
Transaction is reasonably expected to become effective or be consummated
(including, in the case of (i), (ii) and (iii), any such date which is after the
date of this Agreement and prior to the issuance of the Rights), the earliest of
such dates being herein referred to as the "Distribution Date," (x) the Rights
will be evidenced (subject to the provisions of Section 3(b) hereof) by the
certificates for Common Shares registered in the names of the holders thereof
(which certificates shall also be deemed to be Right Certificates) and not by
separate Right Certificates, and (y) the right to receive Right Certificates
will be transferable only in connection with the transfer of the underlying
Common Shares (including a transfer to the Corporation); provided, however, that
if a tender offer is terminated prior to the occurrence of a Distribution Date,
then no Distribution Date shall occur as a result of such tender offer.  As soon
as practicable after the Distribution Date, the Corporation will prepare and
execute, the Rights Agent will countersign, and the Corporation will send or
cause to be sent by first-class, postage-prepaid mail, to each record holder of
Common Shares as of the close of business on the Distribution Date, at the
address of such holder shown on the records of the Corporation, a Right
Certificate, substantially in the form of Exhibit B hereto (a "Right
Certificate"), evidencing one Right for each Common Share so held.  As of and
after the Distribution Date, the Rights will be evidenced solely by such Right
Certificates.

     (b) As promptly as practicable following the Record Date, the Corporation
will send a copy of a Summary of Rights to Purchase Preferred Shares, in
substantially the form of Exhibit C hereto (the "Summary of Rights"), by first-
class, postage-prepaid mail, to each record holder of Common Shares as of the
close of business on the Record Date, at the address of such holder shown on the
records of the Corporation.  With respect to certificates for Common Shares
outstanding as of the Record Date, until the Distribution Date, the Rights will
be evidenced by such certificates registered in the names of the holders thereof
together with a copy of the Summary of Rights attached thereto.  Until the
Distribution Date (or the earlier of the Redemption Date or the Final Expiration
Date), the surrender for transfer of any certificate for Common Shares
outstanding on the Record Date, with or without a copy of the Summary of Rights
attached thereto, shall also constitute the transfer of the Rights associated
with such Common Shares.

     (c) Certificates for Common Shares which become outstanding (including,
without limitation, reacquired Common Shares referred to in the last sentence of
this paragraph (c)) after the Record Date but prior to the earliest of the
Distribution Date, the Redemption Date or the Final Expiration Date, shall be
deemed also to be certificates for Rights, and shall bear the following legend:

     This certificate also evidences and entitles the holder hereof to certain
     rights as set forth in a Rights Agreement between CUNO Incorporated and
     ChaseMellon Shareholder Services L.L.C., dated as of __________, 1996 (the
     "Rights Agreement"), the terms of which are hereby incorporated herein by
     reference and a copy of which is on file at the principal executive offices
     of CUNO Incorporated. Under certain circumstances, as set forth in the
     Rights Agreement, such Rights will be evidenced by separate certificates
     and will no longer be evidenced by this certificate. CUNO Incorporated

                                       5


 
               will mail to the holder of this certificate a copy of the Rights
               Agreement without charge after receipt of a written request
               therefor.  Under certain circumstances set forth in the Rights
               Agreement, Rights issued to, or held by, any Person who is, was
               or becomes an Acquiring Person or an Affiliate or Associate
               thereof (as defined in the Rights Agreement) and certain related
               persons, whether currently held by or on behalf of such Person or
               by any subsequent holder, may become null and void.

With respect to such certificates containing the foregoing legend, until the
Distribution Date, the Rights associated with the Common Shares represented by
such certificates shall be evidenced by such certificates alone, and the
surrender for transfer of any such certificate shall also constitute the
transfer of the Rights associated with the Common Shares represented thereby.
In the event that the Corporation purchases or acquires any Common Shares after
the Record Date but prior to the Distribution Date, any Rights associated with
such Common Shares shall be deemed cancelled and retired so that the Corporation
shall not be entitled to exercise any Rights associated with the Common Shares
which are no longer outstanding.

          Section 4.  Form of Right Certificate.

          (a) The Right Certificates (and the forms of election to purchase and
of assignment to be printed on the reverse thereof) shall be substantially in
the form set forth in Exhibit B hereto and may have such marks of identification
or designation and such legends, summaries or endorsements printed thereon as
the Corporation may deem appropriate and as are not inconsistent with the
provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to usage. Subject to the provisions of Section 11
and Section 22 hereof, the Right Certificates shall entitle the holders thereof
to purchase such number of one-hundredths of a Preferred Share as shall be set
forth therein at the price per one one-hundredth of a Preferred Share set forth
therein (the "Purchase Price"), but the amount and type of securities
purchasable upon the exercise of each Right and the Purchase Price thereof shall
be subject to adjustment as provided herein.

          (b) Any Right Certificate issued pursuant to Section 3(a) or Section
22 hereof that represents Rights which are null and void pursuant to Section
7(e) of this Agreement and any Right Certificate issued pursuant to Section 6 or
Section 11 hereof upon transfer, exchange, replacement or adjustment of any
other Right Certificate referred to in this sentence, shall contain (to the
extent feasible) the following legend:

               The Rights represented by this Right Certificate are or were
               beneficially owned by a Person who was or became an Acquiring
               Person or an Affiliate or Associate of an Acquiring Person (as
               such terms are defined in the Rights Agreement).  Accordingly,
               this Right Certificate and the Rights represented hereby are null
               and void.

               Provisions of Section 7(e) of this Rights Agreement shall be
               operative whether or not the foregoing legend is contained on any
               such Right Certificate.

                                       6


 
          Section 5.  Countersignature and Registration.

          The Right Certificates shall be executed on behalf of the Corporation
by its Chairman of the Board, its Chief Executive Officer, its President, any of
its Vice Presidents, or its Treasurer, either manually or by facsimile
signature, shall have affixed thereto the Corporation's seal or a facsimile
thereof, and shall be attested by the Secretary or an Assistant Secretary of the
Corporation, either manually or by facsimile signature.  The Right Certificates
shall be countersigned by the Rights Agent and shall not be valid for any
purpose unless so countersigned.  In case any officer of the Corporation who
shall have signed any of the Right Certificates shall cease to be such officer
of the Corporation before countersignature by the Rights Agent and issuance and
delivery by the Corporation, such Right Certificates may nevertheless be
countersigned by the Rights Agent and issued and delivered by the Corporation
with the same force and effect as though the person who signed such Right
Certificates had not ceased to be such officer of the Corporation; and any Right
Certificate may be signed on behalf of the Corporation by any person who, at the
actual date of the execution of such Right Certificate, shall be a proper
officer of the Corporation to sign such Right Certificate, although at the date
of the execution of this Rights Agreement any such person was not such an
officer.

          Following the Distribution Date, the Rights Agent will keep or cause
to be kept, at its principal office or offices designated as the appropriate
place for surrender of such Right Certificate or transfer, books for
registration and transfer of the Right Certificates issued hereunder.  Such
books shall show the names and addresses of the respective holders of the Right
Certificates, the number of Rights evidenced on its face by each of the Right
Certificates and the certificate number and the date of each of the Right
Certificates.

          Section 6.  Transfer, Split-Up, Combination and Exchange of Right
Certificates; Mutilated, Destroyed, Lost or Stolen Right Certificate.

          Subject to the provisions of Section 4(b), Section 7(e) and Section 14
hereof, at any time after the close of business on the Distribution Date, and at
or prior to the close of business on the earlier of the Redemption Date or the
Final Expiration Date, any Right Certificate or Right Certificates may be
transferred, split up, combined or exchanged for another Right Certificate or
Right Certificates, entitling the registered holder to purchase a like number of
one one-hundredth of a Preferred Share (or, following a Triggering Event, other
securities, as the case may be) as the Right Certificate or Right Certificates
surrendered then entitled such holder (or former holder in the case of a
transfer) to purchase.  Any registered holder desiring to transfer, split up,
combine or exchange any Right Certificate or Right Certificates shall make such
request in writing delivered to the Rights Agent, and shall surrender the Right
Certificate or Right Certificates to be transferred, split up, combined or
exchanged at the principal office or offices of the Rights Agent designated for
such purpose.  Neither the Rights Agent nor the Corporation shall be obligated
to take any action whatsoever with respect to the transfer of any such
surrendered Right Certificate until the registered holder shall have completed
and signed the certificate contained in the form of assignment on the reverse
side of such Right Certificate and shall have provided such additional evidence
of the identity of the Beneficial Owner (or former Beneficial Owner) or
Affiliates or Associates thereof as the Corporation shall reasonably request.
Thereupon the Rights Agent shall, subject to Section 4(b), Section 7(e) and
Section 14 hereof, countersign and deliver to the Person entitled thereto a
Right Certificate or Right Certificates, as the case may be, as so requested.
the Corporation may require payment of a

                                       7

 
sum sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer, split up, combination or exchange of Right
Certificates.

          Upon receipt by the Corporation and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Right Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them, and, at the Corporation's request,
reimbursement to the Corporation and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Right Certificate if mutilated, the Corporation will make and deliver a new
Right Certificate of like tenor to the Rights Agent for countersignature and
delivery to the registered holder in lieu of the Right Certificate so lost,
stolen, destroyed or mutilated.

          Section 7.  Exercise Of Rights; Purchase Price; Expiration Date of
Rights.

          (a) Subject to Section 7(e) hereof, the registered holder of any Right
Certificate may exercise the Rights evidenced thereby (except as otherwise
provided herein) in whole or in part at any time after the Distribution Date
upon surrender of the Right Certificate, with the form of election to purchase
and the certificate on the reverse side thereof duly executed, to the Rights
Agent at the principal office or offices of the Rights Agent designated for such
purpose, together with payment of the aggregate Purchase Price for the total
number of one one-hundredth of a Preferred Share (or other securities, as the
case may be) as to which such surrendered Rights are exercised, at or prior to
the earliest of (i) the close of business on               , 2006 (the "Final
Expiration Date"), or (ii) the time at which the Rights are redeemed as provided
in Section 23 hereof (the "Redemption Date") or (iii) the time at which the
Rights are exchanged pursuant to Section 24 hereof.

          (b) The Purchase Price for each one one-hundredth of a Preferred Share
pursuant to the exercise of a Right shall initially be $60, shall be subject to
adjustment from time to time as provided in the next sentence and in Sections 11
and 13(a) hereof and shall be payable in accordance with paragraph (c) below.
Anything in this Agreement to the contrary notwithstanding, in the event that at
any time after the date of this Agreement and prior to the Distribution Date,
the Corporation shall (i) declare or pay any dividend on the Common Shares
payable in Common Shares or (ii) effect a subdivision, combination or
consolidation of the Common Shares (by reclassification or otherwise than by
payment of dividends in Common Shares) into a greater or lesser number of Common
Shares, then in any such case, each Common Share outstanding following such
subdivision, combination or consolidation shall continue to have a Right
associated therewith and the Purchase Price following any such event shall be
proportionately adjusted to equal the result obtained by multiplying the
Purchase Price immediately prior to such event by a fraction the numerator of
which shall be the total number of Common Shares outstanding immediately prior
to the occurrence of the event and the denominator of which shall be the total
number of Common Shares outstanding immediately following the occurrence of such
event. The adjustment provided for in the preceding sentence shall be made
successively whenever such a dividend is declared or paid or such a subdivision,
combination or consolidation is effected.

                                       8


 
          (c) Upon receipt of a Right Certificate representing exercisable
Rights, with the form of election to purchase and the certificate duly executed,
accompanied by payment of the Purchase Price for the Preferred Shares (or other
securities, as the case may be) to be purchased and an amount equal to any
applicable transfer tax required to be paid by the holder of such Right
Certificate in accordance with Section 6 hereof by certified check, cashier's
check or money order payable to the order of the Corporation, the Rights Agent
shall thereupon promptly (i) (A) requisition from any transfer agent of the
Preferred Shares certificates for the number of Preferred Shares to be purchased
and the Corporation hereby irrevocably authorizes its transfer agent to comply
with all such requests, or (B) if the Corporation, in its sole discretion, shall
have elected to deposit the Preferred Shares issuable upon exercise of the
Rights hereunder into a depositary, requisition from the depositary agent
depositary receipts representing such number of one one-hundredths of a
Preferred Share as are to be purchased (in which case certificates for the
Preferred Shares represented by such receipts shall be deposited by the transfer
agent with the depositary agent) and the Corporation will direct the depositary
agent to comply with such requests, (ii) when appropriate, requisition from the
Corporation the amount of cash to be paid in lieu of issuance of fractional
shares in accordance with Section 14 hereof, (iii) after receipt of such
certificates or depositary receipts, cause the same to be delivered to or upon
the order of the registered holder of such Right Certificate, registered in such
name or names as may be designated by such holder, and (iv) when appropriate,
after receipt thereof, deliver such cash to or upon the order of the registered
holder of such Right Certificate.  In the event that the Corporation is
obligated to issue other securities (including Common Shares) of the Corporation
pursuant to Section 11 (a) hereof, the Corporation will make all arrangements
necessary so that such other securities are available for distribution by the
Rights Agent, if and when appropriate.

          In addition, in the case of an exercise of the Rights by a holder
pursuant to Section 11 (a)(ii), the Rights Agent shall return such Right
Certificate to the registered holder thereof after imprinting, stamping or
otherwise indicating thereon that the rights represented by such Right
Certificate no longer include the rights provided by Section 11(a)(ii) of the
Rights Agreement and if less than all the Rights represented by such Right
Certificate were so exercised, the Rights Agent shall indicate on the Right
Certificate the number of Rights represented thereby which continue to include
the rights provided by Section 11(a)(ii).

          (d) In case the registered holder of any Right Certificate shall
exercise less than all the Rights evidenced thereby, a new Right Certificate
evidencing Rights equivalent to the Rights remaining unexercised shall be issued
by the Rights Agent to the registered holder of such Right Certificate or to his
duly authorized assigns, subject to the provisions of Section 14 hereof, or the
Rights Agent shall place an appropriate notation on the Right Certificate with
respect to those Rights exercised.

          (e) Notwithstanding anything in this Agreement to the contrary, from
and after the first occurrence of a Section 11(a)(ii) Event, any Rights
beneficially owned by (i) an Acquiring Person or an Affiliate or Associate of an
Acquiring Person, (ii) a transferee of an Acquiring Person (or of any Affiliate
or Associate thereof) who becomes a transferee after the Acquiring Person
becomes such, or (iii) a transferee of an Acquiring Person (or of any Affiliate
or Associate thereof) who becomes a transferee prior to or concurrently with the
Acquiring Person becoming such and receives such Rights pursuant to either (A) a
transfer (whether or not for consideration) from the Acquiring Person to holders
of equity interests in such Acquiring

                                       9


 
Person or to any Person with whom the Acquiring Person has a continuing
agreement, arrangement or understanding regarding the transferred Rights or (B)
a transfer which the Board of Directors of the Corporation has determined is
part of a plan, arrangement or understanding which has as a primary purpose or
effect the avoidance of this Section 7(e), shall become null and void without
any further action and no holder of such Rights shall have any rights whatsoever
with respect to such Rights, whether under any provision of this Agreement or
otherwise.  The Corporation shall use all reasonable efforts to insure that the
provisions of this Section 7(e) and Section 4(b) hereof are complied with, but
shall have no liability to any holder of Right Certificates or other Person as a
result of its failure to make any determinations with respect to an Acquiring
Person or its Affiliates, Associates or transferees hereunder.

          (f) Notwithstanding anything in this Agreement to the contrary,
neither the Rights Agent nor the Corporation shall be obligated to undertake any
action with respect to a registered holder upon the occurrence of any purported
exercise as set forth in this Section 7 unless such registered holder shall have
(i) completed and signed the certificate contained in the form of election to
purchase set forth on the reverse side of the Right Certificate surrendered for
such exercise, and (ii) provided such additional evidence of the identity of the
Beneficial Owner (or former Beneficial owner) or Affiliates or Associates
thereof as the Corporation shall reasonably request.

          Section 8.  Cancellation and Destruction of Right Certificates.

          All Right Certificates surrendered for the purpose of exercise,
transfer, split up, combination or exchange shall, if surrendered to the
Corporation or to any of its agents, be delivered to the Rights Agent for
cancellation or in cancelled form, or, if surrendered to the Rights Agent, shall
be cancelled by it, and no Right Certificates shall be issued in lieu thereof
except as expressly permitted by any of the provisions of this Rights Agreement.
The Corporation shall deliver to the Rights Agent for cancellation and
retirement, and the Rights Agent shall so cancel and retire, any other Right
Certificate purchased or acquired by the Corporation otherwise than upon the
exercise thereof.  The Rights Agent shall deliver all cancelled Right
Certificates to the Corporation, or shall, at the written request of the
Corporation, destroy such cancelled Right Certificates, and in such case shall
deliver a certificate of destruction thereof to the Corporation.

          Section 9.  Reservation and Availability of Preferred Shares

          The Corporation covenants and agrees that at all times prior to the
occurrence of a Section 11(a)(ii) Event it will cause to be reserved and kept
available out of its authorized and unissued Preferred Shares, or any authorized
and issued Preferred Shares held in its treasury, the number of Preferred Shares
that will be sufficient to permit the exercise in full of all outstanding Rights
and, after the occurrence of a Section 11(a)(ii) Event, shall, to the extent
reasonably practicable, so reserve and keep available a sufficient number of
Common Shares (and/or other securities) which may be required to permit the
exercise in full of the Rights pursuant to this Agreement.

          So long as the Preferred Shares (and, after the occurrence of a
Section 11(a)(ii) Event, Common Shares or any other securities) issuable upon
the exercise of the Rights may be listed on any national securities exchange,
the Corporation shall use its best efforts to cause,

                                       10

 
from and after such time as the Rights become exercisable, all shares reserved
for such issuance to be listed on such exchange upon official notice of issuance
upon such exercise.

          The Corporation covenants and agrees that it will take all such action
as may be necessary to ensure that all Preferred Shares (or Common Shares and/or
other securities, as the case may be) delivered upon exercise of Rights shall,
at the time of delivery of the certificates for such shares or other securities
(subject to payment of the Purchase Price), be duly and validly authorized and
issued and fully paid and non-assessable shares or securities.

          The Corporation further covenants and agrees that it will pay when due
and payable any and all U.S. federal and state transfer taxes and charges which
may be payable in respect of the issuance or delivery of the Right Certificates
or of any Preferred Shares (or Common Shares and/or other securities, as the
case may be) upon the exercise of Rights.  The Corporation shall not, however,
be required to pay any transfer tax which may be payable in respect of any
transfer or delivery of Right Certificates to a person other than, or the
issuance or delivery of certificates or depositary receipts for the Preferred
Shares (or Common Shares and/or other securities, as the case may be) in a name
other than that of, the registered holder of the Right Certificate evidencing
Rights surrendered for exercise, or to issue or to deliver any certificates or
depositary receipts for Preferred Shares (or Common Shares and/or other
securities, as the case may be) upon the exercise of any Rights, until any such
tax shall have been paid (any such tax being payable by the holder of such Right
Certificate at the time of surrender) or until it has been established to the
Corporation's reasonable satisfaction that no such tax is due.

          The Corporation shall use its best efforts to (i) file, as soon as
practicable following the Shares Acquisition Date, a registration statement
under the Act, with respect to the securities purchasable upon exercise of the
Rights on an appropriate form, (ii) cause such registration statement to become
effective as soon as practicable after such filing, and (iii) cause such
registration statement to remain effective (with a prospectus at all times
meeting the requirements of the Act and the rules and regulations thereunder)
until the date of the expiration of the rights provided by Section 11(a)(ii).
The Corporation will also take such action as may be appropriate under the blue
sky laws of the various states.

          Section 10.  Preferred Shares Record Date.

          Each person in whose name any certificate for Preferred Shares (or
Common Shares and/or other securities, as the case may be) is issued upon the
exercise of Rights shall for all purposes be deemed to have become the holder of
record of the Preferred Shares (or Common Shares and/or other securities, as the
case may be) represented thereby on, and such certificate shall be dated, the
date upon which the Right Certificate evidencing such Rights was duly
surrendered and payment of the Purchase Price (and any applicable transfer
taxes) was made; provided, however, that, if the date of such surrender and
payment is a date upon which the Preferred Shares (or Common Shares and/or other
securities, as the case may be) transfer books of the Corporation are closed,
such person shall be deemed to have become the record holder of such shares on,
and such certificate shall be dated, the next succeeding Business Day on which
the Preferred Shares (or Common Shares and/or other securities, as the case may
be) transfer books of the Corporation are open.

                                      11


 
     Section 11. Adjustment of Purchase Price, Number and Kind of Shares or
Number of Rights.

     The Purchase Price, the number and kind of shares covered by each Right and
the number of Rights outstanding are subject to adjustment from time to time as
provided in this Section 11.

              (a) (i) In the event the Corporation shall at any time after the
date of this Agreement (A) declare a dividend on the Preferred Shares payable in
Preferred Shares, (B) subdivide the outstanding Preferred Shares, (C) combine
the outstanding Preferred Shares into a smaller number of Preferred Shares or
(D) issue any shares of its capital stock in a reclassification of the Preferred
Shares (including any such reclassification in connection with a consolidation
or merger in which the Corporation is the continuing or surviving corporation),
except as otherwise provided in this Section 11 (a) and Section 7(e) hereof, the
Purchase Price in effect at the time of the record date for such dividend or of
the effective date of such subdivision, combination or reclassification, and the
number and kind of shares of capital stock issuable on such date, shall be
proportionately adjusted so that the holder of any Right exercised after such
time shall be entitled to receive the aggregate number and kind of shares of
capital stock which, if such Right had been exercised immediately prior to such
date and at a time when the Preferred Shares transfer books of the Corporation
were open, such holder would have owned upon such exercise and been entitled to
receive by virtue of such dividend, subdivision, combination or
reclassification; provided, however, that in no event shall the consideration to
be paid upon the exercise of one Right be less than the aggregate par value of
the shares of capital stock of the Corporation issuable upon exercise of one
Right. If an event occurs which would require an adjustment under both Section
11(a)(i) and Section 11(a)(ii), the adjustment provided for in this Section
11(a)(i) shall be in addition to, and shall be made prior to, any adjustment
required pursuant to Section 11(a)(11).

              (ii) In the event any Person, alone or together with its
Affiliates and Associates, shall become an Acquiring Person, then proper
provision shall be made so that each holder of a Right (except as provided below
and in Section 7(e) hereof) shall, for a period of 60 days after the later of
the occurrence of any such event or the effective date of an appropriate
registration statement under the Act pursuant to Section 9 hereof, have a right
to receive, upon exercise thereof at a price equal to the then current Purchase
Price, in accordance with the terms of this Agreement, such number of Common
Shares (or, in the discretion of the Board of Directors, one one-hundredth of a
Preferred Share) as shall equal the result obtained by (x) multiplying the then
current Purchase Price by the then number of one one-hundredths of a Preferred
Share for which a Right was exercisable immediately prior to the first
occurrence of a Section 11(a)(ii) Event, and dividing that product by (y) 50% of
the then current per share market price of the Corporation's Common Shares
(determined pursuant to Section 11(d) hereof) on the date of such first
occurrence (such number of shares being referred to as the "ADJUSTMENT SHARES");
provided, however, that if the transaction that would otherwise give rise to the
foregoing adjustment is also subject to the provisions of Section 13 hereof,
then only the provisions of Section 13 hereof shall apply and no adjustment
shall be made pursuant to this Section 11(a)(ii);

                                       12

 
              (iii) In the event that there shall not be sufficient treasury
shares or authorized but unissued (and unreserved) Common Shares to permit the
exercise in full of the Rights in accordance with the foregoing subparagraph
(ii) and the Rights become so exercisable (and the Board has determined to make
the Rights exercisable into fractions of a Preferred Share), notwithstanding any
other provision of this Agreement, to the extent necessary and permitted by
applicable law, each Right shall thereafter represent the right to receive, upon
exercise thereof at the then current Purchase Price in accordance with the terms
of this Agreement, (x) a number of (or fractions of) Common Shares (up to the
maximum number of Common Shares which may permissibly be issued) and (y) one 
one-hundredth of a Preferred Share or a number of, or fractions of other equity
securities of the Corporation (or, in the discretion of the Board of Directors,
debt) which the Board of Directors of the Corporation has determined to have the
same aggregate current market value (determined pursuant to Section 11(d)(i) and
(ii) hereof, to the extent applicable,) as one Common Share (such number of, or
fractions of, Preferred Shares, debt, or other equity securities or debt of the
Corporation) being referred to as a "CAPITAL STOCK EQUIVALENT"), equal in the
aggregate to the number of Adjustment Shares; provided, however, if sufficient
Common Shares and/or capital stock equivalents are unavailable, then the
Corporation shall, to the extent permitted by applicable law, take all such
action as may be necessary to authorize additional Common Shares or capital
stock equivalents for issuance upon exercise of the Rights, including the
calling of a meeting of stockholders; and provided, further, that if the
Corporation is unable to cause sufficient Common Shares and/or capital stock
equivalents to be available for issuance upon exercise in full of the Rights,
then each Right shall thereafter represent the right to receive the Adjusted
Number of Shares upon exercise at the Adjusted Purchase Price (as such terms are
hereinafter defined). As used herein, the term "ADJUSTED NUMBER OF SHARES" shall
be equal to that number of (or fractions of) Common Shares (and/or capital stock
equivalents) equal to the product of (x) the number of Adjustment Shares and (y)
a fraction, the numerator of which is the number of Common Shares (and/or
capital stock equivalents) available for issuance upon exercise of the Rights
and the denominator of which is the aggregate number of Adjustment Shares
otherwise issuable upon exercise in full of all Rights (assuming there were a
sufficient number of Common Shares available) (such fraction being referred to
as the "PRORATION FACTOR"). The "ADJUSTED PURCHASE PRICE" shall mean the product
of the Purchase Price and the Proration Factor. The Board of Directors may, but
shall not be required to, establish procedures to allocate the right to receive
Common Shares and capital stock equivalents upon exercise of the Rights among
holders of Rights.

              (b) In case the Corporation shall fix a record date for the
issuance of rights (other than the Rights), options or warrants to all holders
of Preferred Shares entitling them (for a period expiring within 45 calendar
days after such record date) to subscribe for or purchase Preferred Shares (or
shares having the same rights, privileges and preferences as the Preferred
Shares ("EQUIVALENT PREFERRED SHARES")) or securities convertible into Preferred
Shares or equivalent preferred shares at a price per Preferred Share or
equivalent preferred share (or having a conversion price per share, if a
security convertible into Preferred Shares or equivalent preferred shares) less
than the then current per share market price of the Preferred Shares (as
determined pursuant to Section 11(d) hereof) on such record date, the Purchase
Price to be in effect after such record date shall be determined by multiplying
the Purchase Price in effect immediately prior to such record date by a
fraction, the numerator of which shall be the number of Preferred Shares
outstanding on such record date plus the number of Preferred Shares which the
aggregate offering price of the total number of Preferred Shares and/or
equivalent preferred

                                       13

 
shares so to be offered (and/or the aggregate initial conversion price of the
convertible securities so to be offered) would purchase at such current per
share market price, and the denominator of which shall be the number of
Preferred Shares outstanding on such record date plus the number of additional
Preferred Shares and/or equivalent preferred shares to be offered for
subscription or purchase (or into which the convertible securities so to be
offered are initially convertible); provided, however, that in no event shall
the consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Corporation issuable
upon exercise of one Right.  In case such subscription price may be paid in a
consideration part or all of which shall be in a form other than cash, the value
of such consideration shall be determined in good faith by the Board of
Directors of the Corporation, whose determination shall be described in a
statement filed with the Rights Agent and shall be binding on the Rights Agent.
Preferred Shares owned by or held for the account of the Corporation shall not
be deemed outstanding for the purpose of any such computation.  Such adjustment
shall be made successively whenever such a record date is fixed; and in the
event that such rights, options or warrants are not so issued, the Purchase
Price shall be adjusted to be the Purchase Price which would then be in effect
if such record date had not been fixed.

          (c) In case the Corporation shall fix a record date for the making of
a distribution to all holders of the Preferred Shares (including any such
distribution made in connection with a consolidation or merger in which the
Corporation is the continuing or surviving corporation) of evidences of
indebtedness or assets (other than a regular quarterly cash dividend or a
dividend payable in Preferred Shares) or subscription rights or warrants
(excluding those referred to in Section 11(b) hereof), the Purchase Price to be
in effect after such record date shall be determined by multiplying the Purchase
Price in effect immediately prior to such record date by a fraction, the
numerator of which shall be the then current per share market price (as
determined pursuant to Section 11(d) hereof) of the Preferred Shares on such
record date, less the fair market value (as determined in good faith by the
Board of Directors of the Corporation, whose determination shall be described in
a statement filed with the Rights Agent and shall be binding on the Rights
Agent) of the portion of the assets or evidences of indebtedness so to be
distributed or of such subscription rights or warrants applicable to one
Preferred Share and the denominator of which shall be such current per share
market price of the Preferred Shares; provided, however, that in no event shall
the consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Corporation to be
issued upon exercise of one Right.  Such adjustments shall be made successively
whenever such a record date is fixed; and in the event that such distribution is
not so made, the Purchase Price shall again be adjusted to be the Purchase Price
which would then be in effect if such record date had not been fixed.

          (d) (i) For the purpose of any computation hereunder, the "CURRENT PER
SHARE MARKET PRICE" of any security (a "SECURITY" for the purpose of this
Section 11(d)(i)) on any date shall be deemed to be the average of the daily
closing prices per share of such Security for the thirty (30) consecutive
Trading Days (as such term is hereinafter defined) immediately prior to such
date; provided, however, that in the event that the current per share market
price of the Security is determined during a period following the announcement
by the issuer of such Security of (A) a dividend or distribution on such
Security payable in shares of such Security or securities convertible into such
shares, or (B) any subdivision, combination or reclassification of such Security
and prior to the expiration of thirty (30) Trading Days after the ex-dividend
date for such dividend or distribution, or the record date for such subdivision,

                                       14

 
combination or reclassification, then, and in each such case, the current per
share market price shall be appropriately adjusted to reflect the current market
price per share equivalent of such Security.  The closing price for each day
shall be the last sale price, regular way, or, in case no such sale takes place
on such day, the average of the closing bid and asked prices, regular way, in
either case as reported in the principal consolidated transaction reporting
system with respect to securities listed or admitted to trading on the New York
Stock Exchange or, if the Security is not listed or admitted to trading on the
New York Stock Exchange, as reported in the principal consolidated transaction
reporting system with respect to securities listed on the principal national
securities exchange on which the Security is listed or admitted to trading or,
if the Security is not listed or admitted to trading on any national securities
exchange, the last quoted price or, if not so quoted, the average of the high
bid and low asked prices in the over-the-counter market, as reported by the
National Association of Securities Dealers, Inc. Automated Quotations System
("NASDAQ") or such other system then in use, or, if on any such date the
Security is not quoted by any such organization, the average of the closing bid
and asked prices as furnished by a professional market maker making a market in
the Security selected by the Board of Directors of the Corporation.  If on any
such date no such market maker is making a market in the Security, the fair
value of the Security on such date as determined in good faith by the Board of
Directors of the Corporation shall be used.  The term "TRADING DAY" shall mean a
day on which the principal national securities exchange on which the Security is
listed or admitted to trading is open for the transaction of business or, if
the Security is not listed or admitted to trading on any national securities
exchange, a Business Day.

               (ii) For the purpose of any computation hereunder, the "CURRENT
PER SHARE MARKET PRICE" of the Preferred Shares shall be determined in
accordance with the method set forth in Section 11(d)(i). If the Preferred
Shares are not publicly traded, the "CURRENT PER SHARE MARKET PRICE" of the
Preferred Shares shall be conclusively deemed to be the current per share market
price of the Common Shares as determined pursuant to Section 11(d)(i)
(appropriately adjusted to reflect any stock split, stock dividend or similar
transaction occurring after the date hereof), multiplied by one hundred. If
neither the Common Shares nor the Preferred Shares are publicly held or so
listed or traded, "CURRENT PER SHARE MARKET PRICE" shall mean the fair value per
share as determined in good faith by the Board of Directors of the Corporation,
whose determination shall be described in a statement filed with the Rights
Agent and shall be binding on the Rights Agent.

          (e) Anything herein to the contrary notwithstanding, no adjustment in
the Purchase Price shall be required unless such adjustment would require an
increase or decrease of at least 1% in the Purchase Price; provided, however,
that any adjustments which by reason of this Section 11(e) are not required to
be made shall be carried forward and taken into account in any subsequent
adjustment.  All calculations under this Section 11 shall be made to the nearest
cent or to the nearest one one-hundredth of a Preferred Share or one ten-
thousandth of any other share or security as the case may be.  Notwithstanding
the first sentence of this Section 11(e), any adjustment required by this
Section 11 shall be made no later than the earlier of (i) three (3) years from
the date of the transaction which mandates such adjustment or (ii) the Final
Expiration Date.

          (f) If as a result of an adjustment made pursuant to Section 11(a)(ii)
or Section 13(a) hereof, the holder of any Right thereafter exercised shall
become entitled to receive any shares of capital stock of the Corporation other
than Preferred Shares, thereafter the

                                       15

 
number of other shares so receivable upon exercise of any Right shall be subject
to adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the Preferred Shares contained in
Section 11(a) through (c), inclusive, and the provisions of Sections 7, 9, 10,
13 and 14 with respect to the Preferred Shares shall apply on like terms to any
such other shares.

          (g) All Rights originally issued by the Corporation subsequent to any
adjustment made to the Purchase Price hereunder shall evidence the right to
purchase, at the adjusted Purchase Price, the number of one one-hundredths of a
Preferred Share purchasable from time to time hereunder upon exercise of the
Rights, all subject to further adjustment as provided herein.

          (h) The Corporation may elect on or after the date of any adjustment
of the Purchase Price to adjust the number of Rights, in lieu of any adjustment
in the number of one one-hundredths of a Preferred Share purchasable upon the
exercise of a Right.  Each of the Rights outstanding after such adjustment of
the number of Rights shall be exercisable for the number of one one-hundredths
of a Preferred Share for which a Right was exercisable immediately prior to such
adjustment.  Each Right held of record prior to such adjustment of the number of
Rights shall become that number of Rights (calculated to the nearest one ten-
thousandth) obtained by dividing the Purchase Price in effect immediately prior
to adjustment of the Purchase Price by the Purchase Price in effect immediately
after adjustment of the Purchase Price.  The Corporation shall make a public
announcement of its election to adjust the number of Rights, indicating the
record date for the adjustment, and, if known at the time, the amount of the
adjustment to be made.  This record date may be the date on which the Purchase
Price is adjusted or any day thereafter, but, if the Right Certificates have
been issued, shall be at least ten (10) days later than the date of the public
announcement.  If Right Certificates have been issued, upon each adjustment of
the number of Rights pursuant to this Section 11(h), the Corporation shall, as
promptly as practicable, cause to be distributed to holders of record of Right
Certificates on such record date Right Certificates evidencing, subject to
Section 14 hereof, the additional Rights to which such holders shall be entitled
as a result of such adjustment, or, at the option of the Corporation, shall
cause to be distributed to such holders of record in substitution and
replacement for the Right Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Corporation, new
Right Certificates evidencing all the Rights to which such holders shall be
entitled after such adjustment.  Right Certificates so to be distributed shall
be issued, executed and countersigned in the manner provided for herein and
shall be registered in the names of the holders of record of Right Certificates
on the record date specified in the public announcement.

          (i) Irrespective of any adjustment or change in the Purchase Price or
the number of one one-hundredths of a Preferred Share issuable upon the exercise
of the Rights, the Right Certificates theretofore and thereafter issued may
continue to express the Purchase Price and the number of one one-hundredths of a
Preferred Share which were expressed in the initial Right Certificates issued
hereunder.

          (j) Before taking any action that would cause an adjustment reducing
the Purchase Price below the then par value, if any, of the number of one one-
hundredths of a Preferred Share, Common Shares or other securities issuable upon
exercise of the Rights, the Corporation shall take any corporate action which
may, in the opinion of its counsel, be

                                       16

necessary in order that the Corporation may validly and legally issue such
number of fully paid and non-assessable one one-hundredths of a Preferred Share,
Common Shares or other securities at such adjusted Purchase Price.

          (k) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Corporation may elect to defer until the occurrence of such
event the issuance to the holder of any Right exercised after such record date
the Preferred Shares, Common Shares or other securities of the Corporation, if
any, issuable upon such exercise over and above the Preferred Shares, Common
Shares or other securities of the Corporation, if any, issuable upon exercise on
the basis of the Purchase Price in effect prior to such adjustment; provided,
however, that the Corporation shall deliver to such holder a due bill or other
appropriate instrument evidencing such holder's right to receive such additional
shares upon the occurrence of the event requiring such adjustment.

          (l) Anything in this Section 11 to the contrary notwithstanding, the
Corporation shall be entitled to make such reductions in the Purchase Price, in
addition to those adjustments expressly required by this Section 11, as and to
the extent that it in its sole discretion shall determine to be advisable in
order that (i) any consolidation or subdivision of the Preferred Shares, (ii)
issuance wholly for cash of Preferred Shares at less than the current market
price, (iii) issuance wholly for cash of Preferred Shares or securities which by
their terms are convertible into or exchangeable for Preferred Shares, (iv)
stock dividends or (v) issuance of rights, options or warrants referred to in
this Section 11, hereafter made by the Corporation to holders of its Preferred
Shares shall not be taxable to such stockholders.

          (m) The Corporation covenants and agrees that it shall not, at any
time after the Distribution Date, (i) consolidate with any other Person (other
than a Subsidiary of the Corporation in a transaction which does not violate
Section 11 (n) hereof), (ii) merge with or into any other Person (other than a
Subsidiary of the Corporation in a transaction which does not violate Section
11(n) hereof), or (iii) sell or transfer (or permit any Subsidiary to sell or
transfer), in one transaction, or a series of related transactions, assets or
earning power aggregating more than 50% of the assets or earning power of the
Corporation and its Subsidiaries (taken as a whole) to any other Person or
Persons (other than the Corporation and/or any of its Subsidiaries in one or
more transactions each of which does not violate Section 11(n) hereof), if (x)
at the time of or immediately after such consolidation, merger, sale or transfer
there are any charter or by-law provisions or any rights, warrants or other
instruments or securities outstanding or agreements in effect or other actions
taken, which would materially diminish or otherwise eliminate the benefits
intended to be afforded by the Rights or (y) prior to, simultaneously with or
immediately after such consolidation, merger or sale, the stockholders of the
Person who constitutes, or would constitute, the "PRINCIPAL PARTY" for purposes
of Section 13(a) hereof shall have received a distribution of Rights previously
owned by such Person or any of its Affiliates and Associates.  The Corporation
shall not consummate any such consolidation, merger, sale or transfer unless
prior thereto the Corporation and such other Person shall have executed and
delivered to the Rights Agent a supplemental agreement evidencing compliance
with this Section 11(m).

          (n) The Corporation covenants and agrees that, after the Distribution
Date, it will not, except as permitted by Section 23 or Section 27 hereof, take
(or permit any Subsidiary to take) any action the purpose of which is to, or if
at the time such action is taken

                                       17

 
it is reasonably foreseeable that the effect of such action is to, materially
diminish or otherwise eliminate the benefits intended to be afforded by the
Rights.
          (o) The exercise of Rights under Section 11(a)(ii) shall only result
in the loss of rights under Section 11(a)(ii) to the extent so exercised and
shall not otherwise affect the rights represented by the Rights under this
Rights Agreement, including the rights represented by Section 13.

          Section 12.  Certificate of Adjusted Purchase Price or Number of
Shares.

          Whenever an adjustment is made as provided in Sections 11 or 13
hereof, the Corporation shall promptly (a) prepare a certificate setting forth
such adjustment, and a brief statement of the facts accounting for such
adjustment, (b) file with the Rights Agent and with each transfer agent for the
Common Shares and the Preferred Shares a copy of such certificate and (c) mail a
brief summary thereof to each holder of a Right Certificate in accordance with
Section 26 hereof.  The Rights Agent shall be fully protected in relying on any
such certificate and on any adjustment therein contained and shall not be deemed
to have knowledge of such adjustment unless and until it shall have received
such certificate.

          Section 13.    Consolidation, Merger or Sale or Transfer of Assets or
Earning Power.

          (a) In the event that, on or following the Shares Acquisition Date or,
if a Transaction is proposed, the Distribution Date, directly or indirectly, (x)
the Corporation shall consolidate with, or merge with and into, any Interested
Stockholder or, if in such merger or consolidation all holders of Common Shares
are not treated alike, any other Person, (y) the Corporation shall consolidate
with, or merge with, any Interested Stockholder or, if in such merger or
consolidation all holders of Common Shares are not treated alike, any other
Person, and the Corporation shall be the continuing or surviving corporation of
such consolidation or merger (other than, in a case of any transaction described
in (x) or (y), a merger or consolidation which would result in all of the
securities generally entitled to vote in the election of directors ("VOTING
SECURITIES") of the Corporation outstanding immediately prior thereto continuing
to represent (either by remaining outstanding or by being converted into
securities of the surviving entity) all of the voting securities of the
Corporation or such surviving entity outstanding immediately after such merger
or consolidation and the holders of such securities not having changed as a
result of such merger or consolidation), or (z) the Corporation shall sell or
otherwise transfer (or one or more of its Subsidiaries shall sell or otherwise
transfer), in one transaction or a series of related transactions, assets or
earning power aggregating more than 50% of the assets or earning power of the
Corporation and its Subsidiaries (taken as a whole) to any Interested
Stockholder or Stockholders or, if in such transaction all holders of Common
Shares are not treated alike, any other Person (other than the Corporation or
any Subsidiary of the Corporation in one or more transactions each of which does
not violate Sections 11(m) or 11(n) hereof), then, and in each such case (except
as provided in Section 13(d) hereof), proper provision shall be made so that (i)
each holder of a Right, except as provided in Section 7(e) hereof, shall
thereafter have the right to receive, upon the exercise thereof at a price equal
to the then current Purchase Price, in accordance with the terms of this
Agreement and in lieu of Preferred Shares, such number of freely tradable Common
Shares of the Principal Party (as hereinafter defined), not subject to any
liens, encumbrances, rights of first refusal or other

                                       18

 
adverse claims, as shall equal the result obtained by (A) multiplying the then
current Purchase Price by the number of one one-hundredths of a Preferred Share
for which a Right is then exercisable (without taking into account any
adjustment previously made pursuant to Section 11(a)(ii)) and dividing that
product by (B) 50% of the then current per share market price of the Common
Shares of such Principal Party (determined pursuant to Section 11(d) hereof) on
the date of consummation of such Section 13 Event; (ii) such Principal Party
shall thereafter be liable for, and shall assume, by virtue of such Section 13
Event, all the obligations and duties of the Corporation pursuant to this
Agreement; (iii) the term "Corporation" shall thereafter be deemed to refer to
such Principal Party, it being specifically intended that the provisions of
Section 11 hereof shall apply only to such Principal Party following the first
occurrence of a Section 13 Event; and (iv) such Principal Party shall take such
steps (including, but not limited to, the reservation of a sufficient number of
its Common Shares) in connection with the consummation of any such transaction
as may be necessary to assure that the provisions hereof shall thereafter be
applicable, as nearly as reasonably may be, in relation to the Common Shares
thereafter deliverable upon the exercise of the Rights.

          (b)  "Principal Party" shall mean

              (i) in the case of any transaction described in clause (x) or (y)
of the first sentence of Section 13(a), the Person that is the issuer of any
securities into which Common Shares of the Corporation are converted in such
merger or consolidation, and if no securities are so issued, the Person that is
the other party to such merger or consolidation (including, if applicable, the
Corporation if it is the surviving corporation); and

              (ii) in the case of any transaction described in clause (z) of the
first sentence of Section 13(a), the Person that is the party receiving the
greatest portion of the assets or earning power transferred pursuant to such
transaction or transactions; provided, however, that in any of the foregoing
cases, (1) if the Common Shares of such Person are not at such time and have not
been continuously over the preceding twelve (12) month period registered under
Section 12 of the Exchange Act, and such Person is a direct or indirect
Subsidiary of another Person the Common Shares of which are and have been so
registered, "PRINCIPAL PARTY" shall refer to such other Person; (2) in case such
Person is a Subsidiary, directly or indirectly, of more than one Person, the
Common Shares of two or more of which are and have been so registered,
"PRINCIPAL PARTY" shall refer to whichever of such Persons is the issuer of the
Common Shares having the greatest aggregate market value; and (3) in case such
Person is owned, directly or indirectly, by a joint venture formed by two or
more Persons that are not owned, directly or indirectly, by the same Person, the
rules set forth in (1) and (2) above shall apply to each of the chains of
ownership having an interest in such joint venture as if such party were a
"SUBSIDIARY" of both or all of such joint venturers and the Principal Parties in
each such chain shall bear the obligations set forth in this Section 13 in the
same ratio as their direct or indirect interests in such Person bear to the
total of such interests.

          (c) The Corporation shall not consummate any such consolidation,
merger, sale or transfer unless the Principal Party shall have a sufficient
number of its authorized Common Shares which have not been issued or reserved
for issuance to permit the exercise in full of the Rights in accordance with
this Section 13 and unless prior thereto the Corporation and such Principal
Party shall have executed and delivered to the Rights Agent a supplemental
agreement providing for the terms set forth in paragraphs (a) and (b) of this

                                       19

 
Section 13 and further providing that, as soon as practicable after the date of
any consolidation, merger, sale or transfer mentioned in paragraph (a) of this
Section 13, the Principal Party at its own expense shall:

              (i) prepare and file a registration statement under the Act with
respect to the Rights and the securities purchasable upon exercise of the Rights
on an appropriate form, and will use its best efforts to cause such registration
statement to (A) become effective as soon as practicable after such filing and
(B) remain effective (with a prospectus at all times meeting the requirements of
the Act) until the Final Expiration Date;

              (ii) use its best efforts to qualify or register the Rights and
the securities purchasable upon exercise of the Rights under the blue sky laws
of such jurisdictions as may be necessary or appropriate; and

              (iii) deliver to holders of the Rights historical financial
statements for the Principal Party which comply in all respects with the
requirements for registration on Form 10 under the Exchange Act.

          The provisions of this Section 13 shall similarly apply to successive
mergers or consolidations or sales or other transfers.  The rights under this
Section 13 shall be in addition to the rights to exercise Rights and adjustments
under Section 11 (a)(ii) and shall survive any exercise thereof.

          (d) Notwithstanding anything in this Agreement to the contrary,
Section 13 shall not be applicable to a transaction described in subparagraphs
(x) and (y) of Section 13(a) if (i) such transaction is consummated with a
Person or Persons who acquired Common Shares pursuant to a Permitted Offer (or a
wholly owned Subsidiary of any such Person or Persons); (ii) the price per
Common Share offered in such transaction is not less than the price per Common
Share paid to all holders of Common Shares whose shares were purchased pursuant
to such Permitted Offer; and (iii) the form of consideration offered in such
transaction is the same as the form of consideration paid pursuant to such
Permitted Offer.  Upon consummation of any such transaction contemplated by this
Section 13(d), all Rights hereunder shall expire.

          Section 14.  Fractional Rights and Fractional Shares.

          (a)  The Corporation shall not be required to issue fractions of
Rights or to distribute Right Certificates which evidence fractional Rights.  In
lieu of such fractional Rights, there shall be paid to the registered holders of
the Right Certificates with regard to which such fractional Rights would
otherwise be issuable, an amount in cash equal to the same fraction of the
current market value of a whole Right.  For the purposes of this Section 14(a),
the current market value of a whole Right shall be the closing price of the
Rights for the Trading Day immediately prior to the date on which such
fractional Rights would have been otherwise issuable.  The closing price for any
day shall be the last sale price, regular way, or, in case no such sale takes
place on such day, the average of the closing bid and asked prices, regular way,
in either case as reported in the principal consolidated transaction reporting
system with respect to securities listed or admitted to trading on the New York
Stock Exchange or, if the Rights are not listed or admitted to trading on the
New York Stock Exchange, as reported in the principal consolidated transaction
reporting system with respect to securities listed on the principal national
securities exchange on which the Rights are listed or admitted to trading or, if
the

                                       20

 
Rights are not listed or admitted to trading on any national securities
exchange, the last quoted price or, if not so quoted, the average of the high
bid and low asked prices in the over-the-counter market, as reported by NASDAQ
or such other system then in use or, if on any such date the Rights are not
quoted by any such organization, the average of the closing bid and asked prices
as furnished by a professional market maker making a market in the Rights
selected by the Board of Directors of the Corporation.  If on any such date no
such market maker is making a market in the Rights, the fair value of the Rights
on such date as determined in good faith by the Board of Directors of the
Corporation shall be used.

          (b) The Corporation shall not be required to issue fractions of
Preferred Shares (other than fractions which are one one-hundredth or integral
multiples of one one-hundredth of a Preferred Share) upon exercise of the Rights
or to distribute certificates which evidence fractional Preferred Shares (other
than fractions which are one one-hundredth or integral multiples of one 
one-hundredth of a Preferred Share). Fractions of Preferred Shares in integral
multiples of one one-hundredth of a Preferred Share may, at the election of the
Corporation, be evidenced by depositary receipts, pursuant to an appropriate
agreement between the Corporation and a depositary selected by it; provided that
such agreement shall provide that the holders of such depositary receipts shall
have the rights, privileges and preferences to which they are entitled as
beneficial owners of the Preferred Shares represented by such depositary
receipts. In lieu of fractional Preferred Shares that are not one one-hundredth
or integral multiples of one one-hundredth of a Preferred Share, the Corporation
shall pay to the registered holders of Right Certificates at the time such
Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of one Preferred Share. For the purposes of
this Section 14(b), the current market value of a Preferred Share shall be the
closing price of a Preferred Share (as determined pursuant to Section 11 (d)(ii)
hereof) for the Trading Day immediately prior to the date of such exercise.

          (c) Following the occurrence of one of the transactions or events
specified in Section 11 giving rise to the right to receive Common Shares,
capital stock equivalents (other than Preferred Shares) or other securities upon
the exercise of a Right, the Corporation shall not be required to issue
fractions of shares or units of such Common Shares, capital stock equivalents or
other securities upon exercise of the Rights or to distribute certificates which
evidence fractions of such Common Shares, capital stock equivalents or other
securities.  In lieu of fractional shares or units of such Common Shares,
capital stock equivalents or other securities, the Corporation may pay to the
registered holders of Right Certificates at the time such Rights are exercised
as herein provided an amount in cash equal to the same fraction of the current
market value of a share or unit of such Common Shares, capital stock equivalents
or other securities.  For purposes of this Section 14(c), the current market
value shall be determined in the manner set forth in Section 11(d) hereof for
the Trading Day immediately prior to the date of such exercise and, if such
capital stock equivalent is not traded, each such capital stock equivalent shall
have the value of one one-hundredth of a Preferred Share.

          (d) The holder of a Right by the acceptance of the Right expressly
waives his right to receive any fractional Rights or any fractional share upon
exercise of a Right (except as provided above).

          Section 15.  Rights of Action.

                                       21

          All rights of action in respect of this Agreement, excepting the
rights of action given to the Rights Agent under Section 18 hereof, are vested
in the respective registered holders of the Right Certificates (and, prior to
the Distribution Date, the registered holders of the Common Shares); and any
registered holder of any Right Certificate (or, prior to the Distribution Date,
of the Common Shares), without the consent of the Rights Agent or of the holder
of any other Right Certificate (or, prior to the Distribution Date, of the
Common Shares), may, in his own behalf and for his own benefit, enforce, and may
institute and maintain any suit, action or proceeding against the Corporation to
enforce, or otherwise act in respect of, his right to exercise the Rights
evidenced by such Right Certificate in the manner provided in such Right
Certificate and in this Agreement.  Without limiting the foregoing or any
remedies available to the holders of Rights, it is specifically acknowledged
that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and will be entitled to specific performance of the
obligations under, and injunctive relief against actual or threatened violations
of the obligations of any Person subject to, this Agreement.

          Section 16.  Agreement of Right Holders.

          Every holder of a Right, by accepting the same, consents and agrees
with the Corporation and the Rights Agent and with every other holder of a Right
that:
               (a) prior to the Distribution Date, the Rights will be
transferable only in connection with the transfer of the Common Shares;

               (b) after the Distribution Date, the Right Certificates are
transferable only on the registry books of the Rights Agent if surrendered at
the principal office or offices of the Rights Agent designated for such purpose,
duly endorsed or accompanied by a proper instrument of transfer and with the
appropriate form fully executed;

               (c) subject to Section 6 and Section 7(f) hereof, the Corporation
and the Rights Agent may deem and treat the person in whose name the Right
Certificate (or, prior to the Distribution Date, the associated Common Shares
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Right Certificate or the associated Common Shares certificate made by anyone
other than the Corporation or the Rights Agent) for all purposes whatsoever, and
neither the Corporation nor the Rights Agent, subject to the last sentence of
Section 7(e) hereof, shall be required to be affected by any notice to the
contrary; and

               (d) notwithstanding anything in this Agreement to the contrary,
neither the Corporation nor the Rights Agent shall have any liability to any
holder of a Right or a beneficial interest in a Right or other Person as a
result of its inability to perform any of its obligations under this Agreement
by reason of any preliminary or permanent injunction or other order, decree or
ruling issued by a court of competent jurisdiction or by a governmental,
regulatory or administrative agency or commission, or any statute, rule,
regulation or executive order promulgated or enacted by any governmental
authority, prohibiting or otherwise restraining performance of such obligation;
provided, however, the Corporation must use its best efforts to have any such
order, decree or ruling lifted or otherwise overturned as soon as possible.

          Section 17.  Right Certificate Holder Not Deemed a Stockholder.

                                       22

 
          No holder, as such, of any Right Certificate shall be entitled to
vote, receive dividends or be deemed for any purpose the holder of the Preferred
Shares or any other securities of the Corporation which may at any time be
issuable on the exercise of the Rights represented thereby, nor shall anything
contained herein or in any Right Certificate be construed to confer upon the
holder of any right certificate, as such, any of the rights of a stockholder of
the Corporation or any right to vote for the election of directors or upon any
matter submitted to stockholders at any meeting thereof, or to give or withhold
consent to any corporate action, or to receive notice of meetings or other
actions affecting stockholders (except as provided in Section 25 hereof), or to
receive dividends or other distributions or to exercise any preemptive or
subscription rights, or otherwise, until the Right or Rights evidenced by such
Right Certificate shall have been exercised in accordance with the provisions
hereof.

          Section 18. Concerning the Rights Agent.

          The Corporation agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
other disbursements incurred in the administration and execution of this
Agreement and the exercise and performance of its duties hereunder.  The
Corporation also agrees to indemnify the Rights Agent for, and to hold it
harmless against, any loss, liability, or expense, incurred without negligence,
bad faith or willful misconduct on the part of the Rights Agent, for anything
done or omitted by the Rights Agent in connection with the acceptance and
administration of this Agreement, including the costs and expenses of defending
against any claim of liability in the premises.  The indemnity provided for
herein shall survive the expiration of the Rights and the termination of this
Agreement.

          The Rights Agent shall be protected and shall incur no liability for,
or in respect of, any action taken, suffered or omitted by it in connection
with, its administration of this Agreement in reliance upon any Right
Certificate or certificate for Common Shares or for other securities of the
Corporation, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement, or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
Person or Persons.


          SECTION 19. Merger or Consolidation or Change of Name of Rights Agent.

          Any corporation into which the Rights Agent or any successor Rights
Agent may be merged or with which it may be consolidated, or any corporation
resulting from any merger or consolidation to which the Rights Agent or any
successor Rights Agent shall be a party, or any corporation succeeding to the
stock transfer or all or substantially all of the corporate trust business of
the Rights Agent or any successor Rights Agent, shall be the successor to the
Rights Agent under this Agreement without the execution or filing of any paper
or any further act on the part of any of the parties hereto, provided that such
corporation would be eligible for appointment as a successor Rights Agent under
the provisions of Section 21 hereof.  In case at the time such successor Rights
Agent shall succeed to the agency created by this Agreement, any of the Right
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of a predecessor Rights Agent and
deliver such

                                       23

 
Right Certificates so countersigned; and in case at that time any of the Right
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Right Certificates either in the name of the predecessor or in
the name of the successor Rights Agent; an d in all such cases such Right
Certificates shall have the full force provided in the Right Certificates and in
this Agreement.

          In case at any time the name of the Rights Agent shall be changed and
at such time any of the Right Certificates shall have been countersigned but not
delivered, the Rights Agent may adopt the countersignature under its prior name
and deliver Right Certificates so countersigned; and in case at that time any of
the Right Certificates shall not have been countersigned, the Rights Agent may
countersign such Right Certificates either in its prior name or in its changed
name; and in all such cases such Right Certificates shall have the full force
provided in the Right Certificates and in this Agreement.

          SECTION 20.  Duties of Rights Agent.

          The Rights Agent undertakes only those duties and obligations imposed
by this Agreement upon the following terms and conditions, by all of which the
Corporation and the holders of Right Certificates, by their acceptance thereof,
shall be bound:

          (a)  The Rights Agent may consult with legal counsel (who may be legal
counsel for the Corporation), and the opinion of such counsel shall be full and
complete authorization and protection to the Rights Agent as to any action taken
or omitted by it in good faith and in accordance with such opinion.

          (b)  Whenever in the performance of its duties under this Agreement
the Rights Agent shall deem it necessary or desirable that any fact or matter
(including, without limitation, the identity of an Acquiring Person and the
determination of the current market price of any Security) be proved or
established by the Corporation prior to taking or suffering any action
hereunder, such fact or matter (unless other evidence in respect thereof be
herein specifically prescribed) may be deemed to be conclusively proved and
established by a certificate signed by any one of the Chairman of the Board, the
Chief Executive Officer, the President, any Vice President, the Treasurer or the
Secretary of the Corporation and delivered to the Rights Agent; and such
certificate shall be full authorization to the Rights Agent for any action taken
or suffered in good faith by it under the provisions of this Agreement in
reliance upon such certificate.

          (c)  The Rights Agent shall be liable hereunder only for its own
negligence, bad faith or willful misconduct.

          (d)  The Rights Agent shall not be liable for or by reason of any of
the statements of fact or recitals contained in this Agreement or in the Right
Certificates (except its countersignature on such Right Certificates) or be
required to verify the same, but all such statements and recitals are and shall
be deemed to have been made by the Corporation only.

          (e)  The Rights Agent shall not be under any responsibility in respect
of the validity of this Agreement or the execution and delivery hereof (except
the due execution hereof by the Rights Agent) or in respect of the validity or
execution of any Right Certificate (except its countersignature thereof); nor
shall it be responsible for any breach by the

                                       24

 
Corporation of any covenant or condition contained in this Agreement or in any
Rights Certificate; nor shall it be responsible for any change in the
exercisability of the Rights (including the Rights becoming void pursuant to
Section 7(e) hereof) or any adjustment required under the provisions of Section
11 or Section 13 hereof or responsible for the manner, method or amount of any
such adjustment or the ascertaining of the existence of facts that would require
any such adjustment (except with respect to the exercise of Rights evidenced by
Right Certificates after receipt of the certificate described in Section 12
hereof); nor shall it by any act hereunder be deemed to make any representation
or warranty as to the authorization or reservation of any Preferred Shares or
Common Shares to be issued pursuant to this Agreement or any Right Certificate
or as to whether any Preferred Shares or Common Shares will, when issued, be
validly authorized and issued, fully paid and non-assessable.

          (f)  The Corporation agrees that it will perform, execute, acknowledge
and deliver or cause to be performed, executed, acknowledged and delivered all
such further and other acts, instruments and assurances as may reasonably be
required by the Rights Agent for the carrying out or performing by the Rights
Agent of the provisions of this Agreement.

          (g)  The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the Chief Executive Officer, the President,
any Vice President, the Treasurer or the Secretary of the Corporation, and to
apply to such officers for advice or instructions in connection with its duties,
and shall not be liable for any action taken or suffered by it in good faith or
lack of action in accordance with instructions of any such officer or for any
delay in acting while waiting for those instructions.  Any application by the
Rights Agent for written instructions from the Corporation may, at the option of
the Rights Agent, set forth in writing any action proposed to be taken or
omitted by the Rights Agent under this Rights Agreement and the date on or after
which such action shall be taken or such omission shall be effective.  The
Rights Agent shall not be liable for any action taken by, or omission of, the
Rights Agent in accordance with a proposal included in any such application on
or after the date specified in such application (which date shall not be less
than five Business Days after the date any officer of the Corporation actually
receives such application, unless any such officer shall have consented in
writing to an earlier date) unless, prior to taking any such action (or the
effective date in the case of an omission), the Rights Agent shall have received
written instruction in response to such application specifying the action to be
taken or omitted.

          (h)  The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Corporation or become pecuniarily interested in any
transaction in which the Corporation may be interested, or contract with or lend
money to the Corporation or otherwise act as fully and freely as though it were
not Rights Agent under this Agreement.  Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Corporation or for any other
legal entity.

          (i)  The Rights Agent may execute and exercise any of the rights or
powers hereby vested in it or perform any duty hereunder either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents or for any loss to the Corporation

                                       25

 
resulting from any such act, default, neglect or misconduct, provided reasonable
care was exercised in the selection and continued employment thereof.

          (j) No provision of this Agreement shall require the Rights Agent to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder or in the exercise of its rights if
there shall be reasonable grounds for believing that repayment of such funds or
adequate indemnification against such risk or liability is not reasonably
assured to it.

          (xi) If, with respect to any Rights Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has not been
completed, the Rights Agent shall not take any further action with respect to
such requested exercise of transfer without first consulting with the
Corporation.

          Section 21.  Change of Rights Agent.

          The Rights Agent or any successor Rights Agent may resign and be
discharged from its duties under this Agreement upon thirty (30) days' notice in
writing mailed to the Corporation and to each transfer agent of the Common
Shares or Preferred Shares by registered or certified mail, and to the holders
of the Right Certificates by first-class mail.  The Corporation may remove the
Rights Agent or any successor Rights Agent upon sixty (60) days' notice in
writing, mailed to the Rights Agent or successor Rights Agent, as the case may
be, and to each transfer agent of the Common Shares or Preferred Shares by
registered or certified mail, and to holders of the Right Certificates by first-
class mail.  If the Rights Agent shall resign or be removed or shall otherwise
become incapable of acting, the Corporation shall appoint a successor to the
Rights Agent.  If the Corporation shall fail to make such appointment within a
period of sixty (60) days after giving notice of such removal or after it has
been notified in writing of such resignation or incapacity by the resigning or
incapacitated Rights Agent or by the holder of a Right Certificate (who shall,
with such notice, submit his Right Certificate for inspection by the
Corporation), then the registered holder of any Right Certificate may apply to
any court of competent jurisdiction for the appointment of a new Rights Agent.
Any successor Rights Agent, whether appointed by the Corporation or by such a
court, shall be a corporation organized and doing business under the laws of the
United States or of any state of the United States in good standing which is
authorized under such laws to exercise corporate trust or stock transfer powers
and is subject to supervision or examination by federal or state authority and
which has at the time of its appointment as Rights Agent a combined capital and
surplus of at least $100,000,000.  After appointment, the successor Rights Agent
shall be vested with the same powers, rights, duties and responsibilities as if
it had been originally named as Rights Agent without further act or deed; but
the predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose.  Not later
than the effective date of any such appointment the Corporation shall file
notice thereof in writing with the predecessor Rights Agent and each transfer
agent of the Common Shares or Preferred Shares, and mail a notice thereof in
writing to the registered holders of the Right Certificates.  Failure to give
any notice provided for in this Section 21, however, or any defect therein,
shall not affect the legality or validity of the resignation or removal of the
Rights Agent or the appointment of the successor Rights Agent, as the case may
be.

                                       26

 
          Section 22.  Issuance of New Right Certificates.

          Notwithstanding any of the provisions of this Agreement or of the
Rights to the Contrary, the corporation may, at its option, issue new Right
Certificates evidencing Rights in such form as may be approved by its Board of
Directors to reflect any adjustment or change in the Purchase Price and the
number or kind or class of shares or other securities or property purchasable
under the Right Certificates made in accordance with the provisions of this
Agreement.

          In addition, in connection with the issuance or sale of Common Shares
following the Distribution Date and prior to the earlier of the Redemption Date
and the Final Expiration Date, the Corporation (a) shall with respect to Common
Shares so issued or sold pursuant to the exercise of stock options or under any
employee plan or arrangement, or upon the exercise, conversion or exchange of
securities, notes or debentures issued by the Corporation, and (b) may, in any
other case, if deemed necessary or appropriate by the Board of Directors of the
Corporation, issue Right Certificates representing the appropriate number of
Rights in connection with such issuance or sale; provided, however, that (i) the
Corporation shall not be obligated to issue any such Right Certificates if, and
to the extent that, the Corporation shall be advised by counsel that such
issuance would create a significant risk of material adverse tax consequences to
the Corporation or the Person to whom such Right Certificate would be issued,
and (ii) no Right Certificate shall be issued if, and to the extent that,
appropriate adjustment shall otherwise have been made in lieu of the issuance
thereof.

          Section 23.    Redemption and Termination.

                     (a) (i) The Board of Directors of the Corporation may, at
its option, redeem all but not less than all the then outstanding Rights at a
redemption price of $.01 per Right, as such amount may be appropriately adjusted
to reflect any stock split, stock dividend or similar transaction occurring
after the date hereof (such redemption price being hereinafter referred to as
the "Redemption Price"), at any time prior to the earlier of (x) the occurrence
of a Section 11 (a)(ii) Event, or (y) the Final Expiration Date.

                         (ii) In addition, the Board of Directors of the
Corporation may, at its option, at any time following the occurrence of a
Section 11(a)(ii) Event and the expiration of any period during which the holder
of Rights may exercise the rights under Section 11(a)(ii) but prior to any
Section 13 Event redeem all but not less than all of the then outstanding Rights
at the Redemption Price (x) in connection with any merger, consolidation or sale
or other transfer (in one transaction or in a series of related transactions) of
assets or earning power aggregating 50% or more of the earning power of the
Corporation and its subsidiaries (taken as a whole) in which all holders of
Common Shares are treated alike and not involving (other than as a holder of
Common Shares being treated like all other such holders) an Interested
Stockholder or a Transaction Person or (y)(aa) if and for so long as the
Acquiring Person is not thereafter the Beneficial Owner of 15% of the Common
Shares, and (bb) at the time of redemption no other Persons are Acquiring
Persons.

                     (b) In the case of a redemption permitted under Section
23(a)(i), immediately upon the date for redemption set forth (or determined in
the manner specified in)

                                       27

 
in a resolution of the Board of Directors of the Corporation ordering the
redemption of the Rights, evidence of which shall have been filed with the
Rights Agent, and without any further action and without any notice, the right
to exercise the Rights will terminate and the only right thereafter of the
holders of Rights shall be to receive the Redemption Price for each Right so
held.  In the case of a redemption permitted only under Section 23(a)(ii),
evidence of which shall have been filed with the Rights Agent, the right to
exercise the Rights will terminate and represent only the right to receive the
Redemption Price upon the later of ten Business Days following the giving of
such notice or the expiration of any period during which the rights under
Section 11(a)(ii) may be exercised.  The Corporation shall promptly give public
notice of any such redemption; provided, however, that the failure to give, or
any defect in, any such notice shall not affect the validity of such redemption.
Within ten (10) days after such date for redemption set forth in a resolution of
the Board of Directors ordering the redemption of the Rights, the Corporation
shall mail a notice of redemption to all the holders of the then outstanding
Rights at their last addresses as they appear upon the registry books of the
Rights Agent or, prior to the Distribution Date, on the registry books of the
transfer agent for the Common Shares.  Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the
notice.  Each such notice of redemption will state the method by which the
payment of the Redemption Price will be made.  Neither the Corporation nor any
of its Affiliates or Associates may redeem, acquire or purchase for value any
Rights at any time in any manner other than that specifically set forth in this
Section 23 and other than in connection with the purchase of Common Shares prior
to the Distribution Date.
                     (c) The Corporation may, at its option, discharge all of
its obligations with respect to the Rights by (i) issuing a press release
announcing the manner of redemption of the Rights in accordance with this
Agreement and (ii) mailing payment of the Redemption Price to the registered
holders of the Rights at their last addresses as they appear on the registry
books of the Rights Agent or, prior to the Distribution Date, on the registry
books of the Transfer Agent of the Common Shares, and upon such action, all
outstanding Rights and Right Certificates shall be null and void without any
further action by the Corporation.

          Section 24.  Exchange.

          (a)  The Board of Directors of the Corporation may, at its option, at
any time after any Person becomes an Acquiring Person, exchange all or part of
the then outstanding and exercisable Rights (which shall not include Rights that
have become void pursuant to the provisions of Section 11(a)(ii) hereof) for
Common Shares of the Corporation at an exchange ratio of one Common Share per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such exchange ratio being
hereinafter referred to as the "Exchange Ratio").  Notwithstanding the
foregoing, the Board of Directors shall not be empowered to effect such exchange
at any time after any Person (other than the Corporation, any Subsidiary of the
Corporation, any employee benefit plan of the Corporation or any such
Subsidiary, any entity holding Common Shares for or pursuant to the terms of any
such plan or any trustee, administrator or fiduciary of such a plan), together
with all Affiliates and Associates of such Person, becomes the Beneficial Owner
of 50% or more of the Common Shares then outstanding.
          (B) Immediately upon the action of the Board of Directors of the
Corporation ordering the exchange of any Rights pursuant to subsection (a) of
this Section 24

                                       28

 
and without any further action and without any notice, the right to exercise
such rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of Common Shares equal to the number of
such rights held by such holder multiplied by the Exchange Ratio.  The
Corporation shall promptly give public notice of any such exchange; provided,
however, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange.  The Corporation promptly shall mail a
notice of any such exchange to all of the holders of such Rights at their last
addresses as they appear upon the registry books of the Rights Agent.  Any
notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice.  Each such notice of exchange
will state the method by which the exchange of the Common Shares for Rights will
be effected and, in the event of any partial exchange, the number of Rights
which will be exchanged.  Any partial exchange shall be effected pro rata based
on the number of Rights (other than Rights which have become void pursuant to
the provisions of Section 11(a)(ii) hereof) held by each holder of Rights.

          (c)  In any exchange pursuant to this Section 24, the Corporation, at
its option, may substitute Preferred Shares (or equivalent preferred shares, as
such term is defined in Section 11(b) hereof) for some or all of the Common
Shares exchangeable for Rights, at the initial rate of one-hundredth of a
Preferred Share (or equivalent preferred share) for each Common Share, as
appropriately adjusted to reflect adjustments in the voting rights of the
Preferred Shares pursuant to the terms thereof, so that the fraction of a
Preferred Share delivered in lieu of each Common Share shall have the same
voting rights as one Common Share.

          (d)  In the event that there shall not be sufficient Common Shares or
Preferred Shares issued but not outstanding or authorized but unissued to permit
any exchange of Rights as contemplated in accordance with this Section 24, the
Corporation shall take such action as may be necessary to authorize additional
Common Shares or Preferred Shares for issuance upon exchange of the Rights.

          Section 25.  Notice of Certain Events.

          (a)  In case the Corporation shall propose (i) to pay any dividend
payable in stock of any class to the holders of its Preferred Shares or to make
any other distribution to the holders of its Preferred Shares (other than a
regularly quarterly cash dividend), (ii) to offer to the holders of its
Preferred Shares rights or warrants to subscribe for or to purchase any
additional Preferred Shares or shares of stock of any class or any other
securities, rights or options, (iii) to effect any reclassification of its
Preferred Shares (other than a reclassification involving only the subdivision
of outstanding Preferred Shares), (iv) to effect any consolidation or merger
into or with any other Person (other than a Subsidiary of the Corporation in a
transaction which does not violate Section 11(n) hereof), or to effect any sale
or other transfer (or to permit one or more of its Subsidiaries to effect any
sale or other transfer) in one or more transactions, of 50% or more of the
assets or earning power of the Corporation and its Subsidiaries (taken as a
whole) to any other Person or Persons (other than the Corporation and/or any of
its Subsidiaries in one or more transactions each of which does not violate
Section 11(n) hereof, or (v) to effect the liquidation, dissolution or winding
up of the Corporation, then, in each such case, the Corporation shall give to
each holder of a Right Certificate, in accordance with Section 26 hereof, a
notice of such proposed action to the extent feasible and file a certificate
with the Rights Agent to that effect, which shall specify the record

                                       29

 
date for the purposes of such stock dividend, or distribution of rights or
warrants, or the date on which such reclassification, consolidation, merger,
sale, transfer, liquidation, dissolution, or winding up is to take place and the
date of participation therein by the holders of the Preferred Shares, if any
such date is to be fixed, and such notice shall be so given in the case of any
action covered by clause (i) or (ii) above at least twenty (20) days prior to
record date for determining holders of the Preferred Shares for purposes of such
action, and in the case of any such other action, at least twenty (20) days
prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the Preferred Shares, whichever shall be
the earlier.

          (b)  In case of a Section 11(a)(ii) Event, then (i) the Corporation
shall as soon as practicable thereafter give to each holder of a Right
Certificate, in accordance with Section 26 hereof, a notice of the occurrence of
such event, which notice shall describe such event and the consequences of such
event to holders of Rights under Section 11(a)(ii) hereof, and (ii) all
references in the preceding paragraph (a) to Preferred Shares shall be deemed
thereafter to refer also to Common Shares and/or, if appropriate, other
securities of the Corporation.

          Section 26.  Notices.

          Notices or demands authorized by this Agreement to be given or made by
the Rights Agent or by the holder of any Right Certificate to or on the
Corporation shall be sufficiently given or made if sent by first-class mail,
postage prepaid, addressed (until another address is filed in writing with the
Rights Agent) as follows:

                             CUNO INCORPORATED
                             
                             400 Research Parkway
                             
                             Meriden, Connecticut 06450
                             
                             Attention: Corporate Secretary

Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made by the Corporation or by the holder of any
Right Certificate to or on the Rights Agent shall be sufficiently given or made
if sent by first-class mail, postage prepaid, addressed (until another address
is filed in writing with the Corporation) as follows:

                    ChaseMellon Shareholder Services L.L.C.
                    4 Station Square
                    3rd Floor
                    Pittsburgh, Pennsylvania 15219
                    Attention:  Administrative Department


                                       30

 
Notices or demands authorized by this Agreement to be given or made by the
Corporation or the Rights Agent to the holder of any Right Certificate or, if
prior to the Distribution Date, to the holder of certificates representing
Common Shares shall be sufficiently given or made if sent by first-class mail,
postage prepaid, addressed to such holder at the address of such holder as shown
on the registry books of the Corporation.

          Section 27.  Supplements and Amendments.

          Prior to the Distribution Date, the Corporation and the Rights Agent
shall, if the Corporation so directs, supplement or amend any provision of this
Agreement without the approval of any holders of certificates representing
Common Shares.  From and after the Distribution Date, the Corporation and the
Rights Agent shall, if the Corporation so directs, supplement or amend this
Agreement without the approval of any holders of Right Certificates in order (i)
to cure any ambiguity, (ii) to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provisions herein,
(iii) to shorten or lengthen any time period hereunder or (iv) to change or
supplement the provisions hereunder in any manner which the Corporation may deem
necessary or desirable and which shall not adversely affect the interests of the
holders of Right Certificates (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person); provided, however, that this Agreement may
not be supplemented or amended to lengthen, pursuant to clause (iii) of this
sentence, (A) a time period relating to when the Rights may be redeemed at such
time as the Rights are not then redeemable, or (B) any other time period unless
such lengthening is for the purpose of protecting, enhancing or clarifying the
rights of, and/or the benefits to, the holders of Rights.  Upon the delivery of
a certificate from an appropriate officer of the Corporation which states that
the proposed supplement or amendment is in compliance with the terms of this
Section 27, the Rights Agent shall execute such supplement or amendment,
provided that such supplement or amendment does not adversely affect the rights
or obligations of the Rights Agent under Section 18 or Section 20 of this
Agreement.  Prior to the Distribution Date, the interests of the holders of
Rights shall be deemed coincident with the interests of the holders of Common
Shares.

          Section 28.  Determination and Actions by the Board of Directors, etc.

          The Board of Directors of the Corporation shall have the exclusive
power and authority to administer this Agreement and to exercise all rights and
powers specifically granted to the Board, or the Corporation, or as may be
necessary or advisable in the administration of this Agreement, including,
without limitation, the right and power to (i) interpret the provisions of this
Agreement, and (II) make all determinations deemed necessary or advisable for
the administration of this Agreement (including, without limitation, a
determination to redeem or not redeem the Rights or to amend the Agreement and
whether any proposed amendment adversely affects the interests of the holders of
Right Certificates).  For all purposes of this Agreement, any calculation of the
number of Common Shares or other securities outstanding at any particular time,
including for purposes of determining the particular percentage of such
outstanding Common Shares or any other securities of which any Person is the
Beneficial Owner, shall be made in accordance with the last sentence of Rule
13d-3(d)(1)(I) of the General Rules and Regulations under the Exchange Act as in
effect on the date of this Agreement.  All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board
in

                                       31

 
good faith, shall (x) be final, conclusive and binding on the Corporation, the
Rights Agent, the holders of the Right Certificates and all other parties, and
(y) not subject the Board to any liability to the holders of the Right
Certificates.

          Section 29.  Successors.

          All the covenants and provisions of this Agreement by or for the
benefit of the Corporation or the Rights Agent shall bind and inure to the
benefit of their respective successors and assigns hereunder.

          Section 30.    Benefits of this Agreement.

          Nothing in this Agreement shall be construed to give to any person or
corporation other than the Corporation, the Rights Agent and the registered
holders of the Right Certificates (and, prior to the Distribution Date, the
Common Shares) any legal or equitable right, remedy or claim under this
Agreement; but this Agreement shall be for the sole and exclusive benefit of the
Corporation, the Rights Agent and the registered holders of the Right
Certificates (and, prior to the Distribution Date, the Common Shares).

          Section 31.    Severability.

          If any term, provision, covenant or restriction of this Agreement is
held by a court of competent jurisdiction or other authority to be invalid, void
or unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Agreement shall remain in full force and effect and shall
in no way be affected, impaired or invalidated.

          Section 32.    Governing Law.

          This Agreement, each Right and each Right Certificate issued hereunder
shall be deemed to be a contract made under the laws of the State of Delaware
and for all purposes shall be governed by and construed in accordance with the
laws of such State applicable to contracts to be made and performed entirely
within such State.

          Section 33.    Counterparts.

          This Agreement may be executed in any number of counterparts and each
of such counterparts shall for all purposes be deemed to be an original, and all
such counterparts shall together constitute but one and the same instrument.

          Section 34.    Descriptive Headings.

          Descriptive headings of the several Sections of this Agreement are
inserted for convenience only and shall not control or affect the meaning or
construction of any of the provisions hereof.

                                       32

 
          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and attested, all as of the date and year first above written.



                                   CUNO INCORPORATED


Attest:


By____________________________     By____________________________
Name:                              Name:
Title:                             Title:
 
                                   CHASEMELLON SHAREHOLDER SERVICES L.L.C.
 
 
Attest:


By____________________________    By______________________________
Name:                             Name:
Title:                            Title:







                                       33

 
                                                                       Exhibit A
                                    FORM OF

                          CERTIFICATE OF DESIGNATIONS

                                       OF

                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       OF

                               CUNO INCORPORATED

                        (PURSUANT TO SECTION 151 OF THE
                       DELAWARE GENERAL CORPORATION LAW)

          CUNO INCORPORATED, a corporation organized and existing under the
General Corporation Law of the State of Delaware (the "Corporation") hereby
certifies that the following resolution was duly adopted by the Board of
Directors of the Corporation as required by Section 151 of the General
Corporation Law of the State of Delaware at a meeting duly called and held on
July 2, 1996.

          RESOLVED, that pursuant to the authority granted to and vested in the
Board of Directors of this Corporation in accordance with the provisions of the
Amended and Restated Certificate of Incorporation, the Board of Directors hereby
creates a series of Series A Junior Participating Preferred Stock, with a par
value of $0.001 per share, of the Corporation and hereby states the designation
and number of shares, and fixes the relative rights, preferences and limitations
thereof (in addition to the provisions set forth in the Certificate of
Incorporation which are applicable to the Preferred Stock of all classes and
series) as follows:

          Series A Junior Participating Preferred Stock

          SECTION 1. DESIGNATION, PAR VALUE AND AMOUNT.  The shares of such
series shall be designated as "SERIES A JUNIOR PARTICIPATING PREFERRED STOCK"
(hereinafter referred to as "SERIES A PREFERRED STOCK"), the shares of such
series shall be with par value of $0.001 per share, and the number of shares
constituting such series shall be _____________; provided, however, that, if
more than a total of _______________ shares of Series A Preferred Stock shall be
issuable upon the exercise of Rights (the "RIGHTS") issued pursuant to the
Rights Agreement, dated as of _______________, 1996 between the Corporation and
ChaseMellon Shareholder Services L.L.C., as Rights Agent (as amended from time
to time) (the "RIGHTS AGREEMENT"), the Board of Directors of the Corporation,
pursuant to Section 151 of the General Corporation Law of the State of Delaware,
shall direct by resolution or resolutions that a certificate be properly
executed, acknowledged and filed providing for the total number of shares of
Series A Preferred Stock authorized to be issued to be increased (to the extent
that the Amended and Restated Certificate of Incorporation then permits) to the
largest number of whole shares (rounded up to the nearest whole number) issuable
upon exercise of the Rights.



                                       1

 
          Section 2. Dividends and Distributions.

               (a) Subject to the prior and superior rights of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series A Preferred Stock with respect to dividends, the holders of
shares of Series A Preferred Stock shall be entitled to receive, when, as and if
declared by the Board of Directors out of assets legally available for the
purpose, quarterly dividends payable in cash on the first business day of
November, February, May and August in each year (each such date being referred
to herein as a "Quarterly Dividend Payment Date"), commencing on the first
Quarterly Dividend Payment Date after the first issuance of a share or fraction
of a share of Series A Preferred Stock, in an amount per share (rounded to the
nearest cent) equal to the greater of (a) $ 1.00 or (b) subject to the provision
for adjustment hereinafter set forth, 100 times the aggregate per share amount
of all cash dividends, and 100 times the aggregate per share amount (payable in
kind) of all non-cash dividends or other distributions other than a dividend
payable in shares of Common Stock, par value $0.001 per share, of the
Corporation (the "Common Stock") or a subdivision of the outstanding shares of
Common Stock (by reclassification or otherwise), declared on the Common Stock
since the immediately preceding Quarterly Dividend Payment Date, or, with
respect to the first Quarterly Dividend Payment Date, since the first issuance
of any share or fraction of a share of Series A Preferred Stock.

               (b) The Corporation shall declare a dividend or distribution on
the Series A Preferred Stock as provided in paragraph (a) above immediately
after it declares a dividend or distribution on the Common Stock (other than a
dividend payable in shares of Common Stock); provided that, in the event no
dividend or distribution shall have been declared on the Common Stock during the
period between any Quarterly Dividend Payment Date and the next subsequent
Quarterly Dividend Payment Date, a dividend of $1.00 per share on the Series A
Preferred Stock shall nevertheless be payable on such subsequent Quarterly
Dividend Payment Date.

               (c) Dividends shall begin to accrue and be cumulative on
outstanding shares of Series A Preferred Stock from the Quarterly Dividend
Payment Date next preceding the date of issue of such shares of Series A
Preferred Stock, unless the date of issue of such shares is prior to the record
date for the first Quarterly Dividend Payment Date, in which case dividends on
such shares shall begin to accrue from the date of issue of such shares, or
unless the date of issue is a Quarterly Dividend Payment Date or is a date after
the record date for the determination of holders of shares of Series A Preferred
Stock entitled to receive a quarterly dividend and before such Quarterly
Dividend Payment Date, in either of which events such dividends shall begin to
accrue and be cumulative from such Quarterly Dividend Payment Date. Accrued but
unpaid dividends shall not bear interest. Dividends paid on the shares of Series
A Preferred Stock in an amount less than the total amount of such dividends at
the time accrued and payable on such shares shall be allocated pro rata on a
share-by-share basis among all such shares at the time outstanding. The Board of
Directors may fix a record date for the determination of holders of shares of
Series A Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be not more than 60 days
prior to the date fixed for the payment thereof.

          Section 3. Voting Rights. The holders of shares of Series A Preferred
Stock shall have the following voting rights:

                                      A-2


 
               (a) Except as provided in paragraph C of this Section 3 and
subject to the provision for adjustment hereinafter set forth, each share of
Series A Preferred Stock shall entitle the holder thereof to 100 votes on all
matters submitted to a vote of the stockholders of the Corporation.

               (b) Except as otherwise provided herein or by law, the holders of
shares of Series A Preferred Stock and the holders of shares of Common Stock
shall vote together as one class on all matters submitted to a vote of
stockholders of the Corporation.

               (c)  (i) If, on the date used to determine stockholders of record
for any meeting of stockholders for the election of directors, a default in
preference dividends (as defined in subparagraph (v) below) on the Series A
Preferred Stock shall exist, the holders of the Series A Preferred Stock shall
have the right, voting as a class as described subparagraph (ii) below, to elect
two directors (in addition to the directors elected by holders of Common Stock
of the Corporation). Such right may be exercised (a) at any meeting of
stockholders for the election of directors or (b) at a meeting of the holders of
shares of Voting Preferred Stock (as hereinafter defined), called for the
purpose in accordance with the Amended and Restated By-laws of the Corporation,
until all such cumulative dividends(referred to above) shall have been paid in
full or until non-cumulative dividends have been paid regularly for at least one
year.
                    (ii) The right of the holders of Series A Preferred Stock to
elect two directors, as described above, shall be exercised as a class
concurrently with the rights of holders of any other series of Preferred Stock
upon which voting rights to elect such directors have been conferred and are
then exercisable. The Series A Preferred Stock and any additional series of
Preferred Stock which the Corporation may issue and which may provide for the
right to vote with the foregoing series of Preferred Stock are collectively
referred to herein as "Voting Preferred Stock."

                    (iii) Each director elected by the holders of shares of
Voting Preferred Stock shall be referred to herein as a "Preferred Director." A
Preferred Director so elected shall continue to serve as such director for a
term of one year, except that upon any termination of the right of all of such
holders to vote as a class for Preferred Directors, the term of office of such
directors shall terminate. Any Preferred Director may be removed by, and shall
not be removed except by, the vote of the holders of record of a majority of the
outstanding shares of Voting Preferred Stock then entitled to vote for the
election of directors, present (in person or by proxy) and voting together as a
single class (a) at a meeting of the stockholders, or (b) at a meeting of the
holders of shares of such Voting Preferred Stock, called for the purpose in
accordance with the Amended and Restated By-laws of the Corporation, or (c) by
written consent signed by the holders of a majority of the then outstanding
shares of Voting Preferred Stock then entitled to vote for the election of
directors, taken together as a single class.

                    (iv) So long as a default in any preference dividends on the
Series A Preferred Stock shall exist or the holders of any other series of
Voting Preferred Stock shall be entitled to elect Preferred Directors, (a) any
vacancy in the office of a Preferred Director may be filled (except as provided
in the following clause (b)) by an instrument in writing signed by the remaining
Preferred Director and filed with the Corporation and (b) in the

                                      A-3

 
case of the removal of any Preferred Director, the vacancy may be filled by the
vote or written consent of the holders of a majority of the outstanding shares
of Voting Preferred Stock then entitled to vote for the election of directors,
present (in person or by proxy) and voting together as a single class, at such
time as the removal shall be effected.  Each director appointed as aforesaid by
the remaining Preferred Director shall be deemed, for all purposes hereof, to be
a Preferred Director.  Whenever (x) no default in preference dividends on the
Series A Preferred Stock shall exist and (y) the holders of other series of
Voting Preferred Stock shall no longer be entitled to elect such Preferred
Directors, then the number of directors constituting the Board of Directors of
the Corporation shall be reduced by two.

              (v) For purposes hereof, a "DEFAULT IN PREFERENCE DIVIDENDS" on
the Series A Preferred Stock shall be deemed to have occurred whenever the
amount of cumulative and unpaid dividends on the Series A Preferred Stock shall
be equivalent to six full quarterly dividends or more (whether or not
consecutive), and, having so occurred, such default shall be deemed to exist
thereafter until, but only until, all cumulative dividends on all shares of the
Series A Preferred Stock then outstanding shall have been paid through the last
Quarterly Dividend Payment Date or until, but only until, non-cumulative
dividends have been paid regularly for at least one year.

          (d) Except as set forth herein (or as otherwise required by applicable
law), holders of Series A Preferred Stock shall have no general or special
voting rights and their consent shall not be required for taking any corporate
action.

          SECTION 4.       Certain Restrictions.

          (a) Whenever quarterly dividends or other dividends or distributions
payable on the Series A Preferred Stock as provided in Section 2 are in arrears,
thereafter and until all accrued and unpaid dividends and distributions, whether
or not declared, on shares of Series A Preferred Stock outstanding shall have
been paid in full, the Corporation shall not

              (i) declare or pay dividends, or make any other distributions, on
any shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Preferred Stock;

              (ii) declare or pay dividends, or make any other distributions, on
any shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Series A Preferred Stock,
except dividends paid ratably on the Series A Preferred Stock and all such
parity stock on which dividends are payable or in arrears in proportion to the
total amounts to which the holders of all such shares are then entitled;

              (iii)  redeem or purchase or otherwise acquire for consideration
(except as provided in (iv) below) shares of any stock ranking junior (either as
to dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock, provided that the Corporation may at any time redeem, purchase
or otherwise acquire shares of any such junior stock in exchange for shares of
any stock of the Corporation ranking junior (either as to dividends or upon
dissolution, liquidation or winding up) to the Series A Preferred Stock;

              (iv) redeem or purchase or otherwise acquire for consideration any
shares of Series A Preferred Stock, or any shares of stock ranking on a parity
(either as to


                                      A-4

 
dividends or upon liquidation, dissolution or winding up) with the Series A
Preferred Stock, except in accordance with a purchase offer made in writing or
by publication (as determined by the Board of Directors) to all holders of such
shares upon such terms as the Board of Directors, after consideration of the
respective annual dividend rates and other relative rights and preferences of
the respective series and classes, shall determine in good faith will result in
fair and equitable treatment among the respective series or classes.
          
          (b) The Corporation shall not permit any subsidiary of the Corporation
to purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (a) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

          Section 5. Reacquired Shares.  Any shares of Series A Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and cancelled promptly after the acquisition thereof All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Amended and Restated Certificate of Incorporation, in any other Certificate of
Designations creating a series of Preferred Stock or as otherwise required by
law.

          Section 6. Liquidation, dissolution or winding Up.

          (a) Subject to the prior and superior rights of holders of any shares
of any series of Preferred Stock ranking prior and superior to the shares of
Series A Preferred Stock with respect to rights upon liquidation, dissolution or
winding up (voluntary or otherwise), no distribution shall be made to the
holders of shares of stock ranking junior(either as to dividends or upon
liquidation, dissolution or winding up) to the Series A Preferred Stock unless,
prior thereto, the holders of shares of Series A Preferred Stock shall have
received $100 per share, plus an amount equal to accrued and unpaid dividends
and distributions thereon, whether or not declared, to the date of such payment
(the "Series A Liquidation Preference").  Following the payment of the full
amount of the Series A Liquidation Preference, no additional distributions shall
be made to the holders of shares of Series A Preferred Stock unless, prior
thereto, the holders of shares of Common Stock shall have received an amount per
share (the "Capital Adjustment") equal to the quotient obtained by dividing (i)
the Series A Liquidation Preference by (ii) 100 (such number in clause (ii), the
"Adjustment Number").  Following the payment of the full amount of the Series A
Liquidation Preference and the Capital Adjustment in respect of all outstanding
shares of Series A Preferred Stock and Common Stock, respectively, holders of
Series A Preferred Stock and holders of Common Stock shall receive their ratable
and proportionate share of the remaining assets to be distributed in the ratio
of the Adjustment Number to 1 with respect to such Preferred Stock and Common
Stock, on a per share basis, respectively.
          
          (b) In the event, however, that there are not sufficient assets
available to permit payment in full of the Series A Liquidation Preference and
the liquidation preferences of all other series of preferred stock, if any,
which rank on a parity with the Series A Preferred Stock, then such remaining
assets shall be distributed ratably to the holders of Series A Preferred Stock
and the holders of such parity shares in proportion to their respective
liquidation preferences.  In the event, however, that there are not sufficient
assets available to permit


                                      A-5

 
payment in full of the Capital Adjustment then such remaining assets shall be
distributed ratably to the holders of Common Stock.

          Section 7.  Consolidation, Merger, etc.  In case the Corporation shall
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Preferred Stock shall at the same time be similarly exchanged or
changed in an amount per share (subject to the provision for adjustment
hereinafter set forth) equal to 100 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.

          Section 8. No Redemption. The shares of Series A Preferred Stock shall
not be redeemable.

          Section 9.  Ranking.  The Series A Preferred Stock shall rank junior
to all other series of the Corporation's Preferred Stock as to the payment of
dividends and the distribution of assets, unless the terms of any such series
shall provide otherwise.

          Section 10.  Amendment.  The Amended and Restated Certificate of
Incorporation of the Corporation shall not be further amended in any manner
which would materially alter or change the powers, preferences or special rights
of the Series A Preferred Stock so as to affect them adversely without the
affirmative vote of the holders of a majority or more of the outstanding shares
of Series A Preferred Stock, voting separately as a class.

          IN WITNESS WHEREOF, this Certificate of Designations is executed on
behalf of the Corporation by its Chairman of the Board and attested by its
Secretary as of the ______ day of __________, 1996.



                                    ____________________________________
                                    Chairman of the Board, President and
                                    Chief Executive Officer

Attest:

________________________________
Secretary

                                      A-6

 
                                                                       Exhibit B
                           Form of Right Certificate


Certificate No. R-                                     __________________ Rights
         
         NOT EXERCISABLE AFTER __________,2006 OR EARLIER IF REDEEMED
       BY THE CORPORATION.  THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01
           PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.

                               Right Certificate

                               CUNO Incorporated

          This certifies that ______________________, or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of ____________, 1996 (the "RIGHTS AGREEMENT"),
between CUNO INCORPORATED, a Delaware corporation (the "CORPORATION"), and
CHASEMELLON SHAREHOLDER SERVICES L.L.C. (the "RIGHTS AGENT"), to purchase from
the Corporation at any time after the Distribution Date (as such term is defined
in the Rights Agreement) and prior to 5:00 P.M., Meriden, Connecticut time, on
________________, 2006, unless the Rights evidenced hereby shall have been
previously redeemed by the Corporation, at the principal office or offices of
the Rights Agent designated for such purpose, or at the office of its successor
as Rights Agent, one one hundredth of a fully paid non-assessable share of
Series A Junior Participating Preferred Stock, without par value (the "PREFERRED
SHARES"), of the Corporation, at a purchase price of $60 per one one-hundredth
of Preferred Share (the "PURCHASE PRICE"), upon presentation and surrender of
this Right Certificate with the Form of Election to Purchase duly executed. The
number of Rights evidenced by this Right Certificate (and the number of one one-
hundredths of a Preferred Share which may be purchased upon exercise hereof) set
forth above, and the Purchase Price set forth above, are the number and Purchase
Price as of ___________, 1996, based on the Preferred Shares as constituted at
such date.

          Upon the occurrence of a Section 11(a)(ii) Event (as such term is
defined in the Rights Agreement), if the Rights evidenced by this Right
Certificate are beneficially owned by (i) an Acquiring Person or an Affiliate or
Associate of any such Acquiring Person (as such terms are defined in the Rights
Agreement), (ii) a transferee of any such Acquiring Person, Associate or
Affiliate who becomes a transferee after the Acquiring Person becomes such, or
(iii) under certain circumstances specified in the Rights Agreement, a
transferee of any such Acquiring Person, Associate or Affiliate who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such,
such Rights shall become null and void and no holder hereof shall have any right
with respect to such Rights from and after the occurrence of such Section
11(a)(ii) Event.

          As provided in the Rights Agreement, the Purchase Price and the number
of one one-hundredths of a Preferred Share or other securities which may be
purchased upon the exercise of the Rights evidenced by this Right Certificate
are subject to modification and adjustment upon the happening of certain events,
including Triggering Events (as such term is defined in the Rights Agreement).


                                      B-1

 
          This Right Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities hereunder of the
Rights Agent, the Corporation and the holders of the Right Certificates, which
limitations of rights include the temporary suspension of the exercisability of
such Rights under the specific circumstances set forth in the Rights Agreement.
Copies of the Rights Agreement are on file at the principal executive offices of
the Corporation and the principal office or offices of the Rights Agent.

          This Right Certificate, with or without other Right Certificates, upon
surrender at the principal office of the Rights Agent, may be exchanged for
another Right Certificate or Right Certificates of like tenor and date
evidencing Rights entitling the holder to purchase a like aggregate number of
Preferred Shares or other securities as the Rights evidenced by the Right
Certificate or Right Certificates surrendered shall have entitled such holder to
purchase.  If this Right Certificate shall be exercised in part, the holder
shall be entitled to receive upon surrender hereof another Right Certificate or
Right Certificates for the number of whole Rights not exercised.

          Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Certificate may be redeemed by the Corporation at a redemption
price of $.01 per Right (subject to adjustment as provided in the Rights
Agreement) payable in cash.

          No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights evidenced hereby (other than fractions which are one one-
hundredth or integral multiples of one one-hundredth of a Preferred Share, which
may, at the election of the Corporation, be evidenced by depositary receipts),
but in lieu thereof a cash payment will be made, as provided in the Rights
Agreement.

          No holder of this Right Certificate shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of the Preferred
Shares or of any other securities of the Corporation which may at any time be
issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any
of the rights of a stockholder of the Corporation or any right to vote for the
election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting stockholders (except as
provided in the Rights Agreement), or to receive dividends or other
distributions or to exercise any preemptive or subscription rights, or
otherwise, until the Right or Rights evidenced by this Right Certificate shall
have been exercised as provided in the Rights Agreement.

          This Right Certificate shall not be valid or obligatory for any
purpose until it shall have been countersigned by the Rights Agent.


                                      B-2

 
          WITNESS the facsimile signature of the proper officers of the
Corporation and its corporate seal.  Dated as of _____________.

[SEAL]
ATTEST:                                     CUNO INCORPORATED
 

                                            By
- -----------------------------------           ---------------------------------
 
Countersigned:
 
ChaseMellon Shareholder Services L.L.C.
 as Rights Agent
 
 
By:
 Authorized Signatory
 

                                      B-3

 
                   Form of Reverse Side of Right Certificate

                              FORM OF ASSIGNMENT

               (To be executed by the registered holder if such
              holder desires to transfer the Right Certificate.)

FOR VALUE RECEIVED _____________________ hereby sells, assigns and transfers
unto ____________________________________________________________________
                 (Please print name and address of transferee)

this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint ___________________ Attorney, to
transfer the within Right Certificate on the books of the within-named
Corporation, with full power of substitution.

Dated: ________________, ____


                                    ________________________________
                                    Signature
Signature Guaranteed:

          Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States.

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

          The undersigned hereby certifies that (1) the Rights evidenced by this
Right Certificate are not being sold, assigned or transferred by or on behalf of
a Person who is or was an Acquiring Person or an Affiliate or Associate thereof
(as such terms are defined in the Right Agreement) and (2) after due inquiry and
to the best knowledge of the undersigned, the undersigned did not acquire the
Rights evidenced by this Right Certificate from any Person who is or was an
Acquiring Person or an Affiliate or Associate thereof (as such terms are defined
in the Rights Agreement).


                                    ________________________________
                                    Signature


                                      B-4

 
            Form of Reverse Side of Right Certificate -- continued
                         FORM OF ELECTION TO PURCHASE
                         ----------------------------
                   (To be executed by the registered holder
                   if such holder desires to exercise Rights
                    represented by the Right Certificate.)

To the Rights Agent:

          The undersigned hereby irrevocably elects to exercise ________________
Rights represented by this Right Certificate to purchase the Preferred Shares,
Common Shares or other securities issuable upon the exercise of such Rights and
requests that certificates for such Preferred Shares, Common Shares or other
securities be issued in the name of:

Please insert social security or other identifying number: _____________________

______________________________________________
(Please print name and address)

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

If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security or other identifying number: _____________________

____________________________________________
(Please print name and address)

- -------------------------------------------------------------------------Dated:
                                    
___________________, ________


                                       _________________________________________
                                       Signature


                                      B-5

 
            Form of Reverse Side of Right Certificate -- continued.

Signature Guaranteed:

          Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States.

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

The undersigned hereby certifies that (1) the Rights evidenced by this Right
Certificate are not being exercised by or on behalf of a Person who is or was an
Acquiring Person or an Affiliate or Associate thereof (as such terms are defined
in the Rights Agreement) and (2) after due inquiry and to the best knowledge of
the undersigned, the undersigned did not acquire the Rights evidenced by this
Rights Certificate from any Person who is or was an Acquiring Person or an
Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement).


                                    _______________________________
                                    Signature

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

                                     NOTICE

          The signature on the foregoing Forms of Assignment and Election and
certificates must conform to the name as written upon the face of this Right
Certificate in every particular, without alteration or enlargement or any change
whatsoever.

          In the event the certification set forth above in the Form of
Assignment or the Form of Election to Purchase, as the case may be, is not
completed, the Corporation and the Rights Agent will deem the Beneficial Owner
of the Rights evidenced by this Right Certificate to be an Acquiring Person or
an Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement) and such Assignment or Election to Purchase will not be honored.





                                      B-6

 
[Since the Right Plan will be adopted pre-spin-off, Exhibit C is unnecessary.
It is retained, however, as a useful summary of the terms of the Plan.]

                                                                       EXHIBIT C
                         SUMMARY OF RIGHTS TO PURCHASE
                                PREFERRED SHARES

          On ___________, 1996, the Board of Directors of CUNO Incorporated (the
"Corporation") declared a dividend distribution of one preferred share purchase
right (a "RIGHT") for each outstanding share of Common Stock, par value $0.001
per share (the "Common Shares"), of the Corporation.  The dividend is payable to
the stockholders of record on _________________, 1996 (the "Record Date"), and
with respect to Common Shares issued thereafter until the Distribution Date (as
defined below) and, in certain circumstances, with respect to Common Shares
issued after the Distribution Date.  Except as set forth below, each Right, when
it becomes exercisable, entitles the registered holder to purchase from the
Corporation one one-hundredth of a share of Series A Junior Participating
Preferred Stock, par value $.001 per share (the "Preferred Shares"), of the
Corporation at a price of $__________ per one one-hundredth of a Preferred Share
(the "PURCHASE PRICE"), subject to adjustment.  The description and terms of the
Rights are set forth in a Rights Agreement (the "Rights Agreement") between the
Corporation and __________________________________, as Rights Agent (the "Rights
Agent"), dated as of _______________, 1996.

          Initially, the Rights will be attached to all certificates
representing Common Shares then outstanding, and no separate Right Certificates
will be distributed.  The Rights will separate from the Common Shares upon the
earliest to occur of (i) a person or group of affiliated or associated persons
having acquired beneficial ownership of 15% or more of the outstanding Common
Shares (except pursuant to a Permitted Offer, as hereinafter defined); or (ii)
10 days (or such later date as the Board may determine) following the
commencement of, or announcement of an intention to make, a tender offer or
exchange offer the consummation of which would result in a person or group
becoming an Acquiring Person (as hereinafter defined) (the earliest of such
dates being called the "Distribution Date").  A person or group whose
acquisition of Common Shares causes a Distribution Date pursuant to clause (i)
above is an "Acquiring Person."  The date that a person or group becomes an
Acquiring Person is the "Shares Acquisition Date."

          The Rights Agreement provides that, until the Distribution Date, the
Rights will be transferred with and only with the Common Shares.  Until the
Distribution Date (or earlier redemption or expiration of the Rights) new Common
Share certificates issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference.  Until the Distribution Date (or earlier redemption or expiration of
the Rights), the surrender for transfer of any certificates for Common Shares
outstanding as of the Record Date, even without such notation or a copy of this
Summary of Rights being attached thereto, will also constitute the transfer of
the Rights associated with the Common Shares represented by such certificate.
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights ("Right

                                      C-1

 
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date (and to each initial record
holder of certain Common Shares issued after the Distribution Date), and such
separate Right Certificates alone will evidence the Rights.

          The Rights are not exercisable until the Distribution Date and will
expire at the close of business on _____________, 2006, unless earlier redeemed
by the Corporation as described below.

          In the event that any person becomes an Acquiring Person (except
pursuant to a tender or exchange offer which is for all outstanding Common
Shares at a price and on terms which a majority of certain members of the Board
of Directors determines to be adequate and in the best interests of the
Corporation, its stockholders and other relevant constituencies, other than such
Acquiring Person, its affiliates and associates (a "Permitted Offer")), each
holder of a Right will thereafter have the right (the "Flip-In Right") to
receive upon exercise the number of Common Shares or one one-hundredths of a
share of Preferred Shares (or, in certain circumstances, other securities of the
Corporation) having a value (immediately prior to such triggering event) equal
to two times the exercise price of the Right.  Notwithstanding the foregoing,
following the occurrence of the event described above, all Rights that are, or
(under certain circumstances specified in the Rights Agreement) were,
beneficially owned by any Acquiring Person or any affiliate or associate thereof
will be null and void.

          In the event that, at any time following the Shares Acquisition Date,
(i) the Corporation is acquired in a merger or other business combination
transaction in which the holders of all of the outstanding Common Shares
immediately prior to the consummation of the transaction are not the holders of
all of the surviving corporation's voting power, or (ii) more than 50% of the
Corporation's assets or earning power is sold or transferred, in either case
with or to an Acquiring Person or any affiliate or associate or any other person
in which such Acquiring Person, affiliate or associate has an interest or any
person acting on behalf of or in concert with such Acquiring Person, affiliate
or associate, or, if in such transaction all holders of Common Shares are not
treated alike, any other person, then each holder of a Right (except Rights
which previously have been voided as set forth above) shall thereafter have the
right (the "Flip-Over Right") to receive, upon exercise, common shares of the
acquiring company having a value equal to two times the exercise price of the
Right.  The holder of a Right will continue to have the Flip-Over Right whether
or not such holder exercises or surrenders the Flip-In Right.

          The Purchase Price payable, and the number of Preferred Shares, Common
Shares or other securities issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares at a price, or
securities convertible into Preferred Shares with a conversion price, less than
the then current market price of the Preferred Shares or (iii) upon the
distribution to holders of the Preferred Shares of evidences of indebtedness or
assets (excluding regular quarterly cash dividends) or of subscription rights or
warrants (other than those referred to above).

                                      C-2

 
          The number of outstanding Rights and the number of one one-hundredths
of a Preferred Share issuable upon exercise of each Right are also subject to
adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common Shares payable in Common Shares or subdivisions,
consolidations or combinations of the Common Shares occurring, in any such case,
prior to the Distribution Date.

          Preferred Shares purchasable upon exercise of the Rights will not be
redeemable.  Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 per share but, if greater, will be entitled
to an aggregate dividend per share of 100 times the dividend declared per Common
Share.  In the event of liquidation, the holders of the Preferred Shares will be
entitled to a minimum preferential liquidation payment of $100 per share;
thereafter, and after the holders of the Common Shares receive a liquidation
payment of $1.00 per share, the holders of the Preferred Shares and the holders
of the Common Shares will share the remaining assets in the ratio of 100 to 1
(as adjusted) for each Preferred Share and Common Share so held, respectively.
Finally, in the event of any merger, consolidation or other transaction in which
Common Shares are exchanged, each Preferred Share will be entitled to receive
100 times the amount received per Common Share.  These rights are protected by
customary antidilution provisions.  In the event that the amount of accrued and
unpaid dividends on the Preferred Shares is equivalent to six full quarterly
dividends or more, the holders of the Preferred Shares shall have the right,
voting as a class, to elect two directors in addition to the directors elected
by the holders of the Common Shares until all cumulative dividends on the
Preferred Shares have been paid through the last quarterly dividend payment date
or until non-cumulative dividends have been paid regularly for at least one
year.

          With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price.  No fractional Preferred Shares will be issued (other than
fractions which are one one-hundredth or integral multiples of one one-hundredth
of a Preferred Share, which may, at the election of the Corporation, be
evidenced by depositary receipts) and in lieu thereof, an adjustment in cash
will be made based on the market price of the Preferred Shares on the last
trading day prior to the date of exercise.

          At any time after a person becomes an Acquiring Person and prior to
the acquisition by such person or group of 50% or more of the Common Shares, the
Board of Directors of the Company may exchange the Rights (other than the Rights
owned by the Acquiring Person or its Associates and Affiliates, which shall have
become void) at an exchange ratio of one Common Shares per Right (subject to
Adjustment).

          At any time prior to the earlier to occur of (i) a person becoming an
Acquiring Person or (ii) the expiration of the Rights, and under certain other
circumstances, the Corporation may redeem the Rights in whole, but not in part,
at a price of $.01 per Right (the "Redemption Price") which redemption shall be
effective upon the action of the Board of Directors.  Additionally, following
the Shares Acquisition Date, the Corporation may redeem the then outstanding
Rights in whole, but not in part, at the Redemption Price, provided that such
redemption is in connection with a merger or other business combination
transaction or series of transactions involving the Corporation in which all
holders of

                                      C-3

 
Common Shares are treated alike but not involving an Acquiring Person or its
affiliates or associates.

          All of the provisions of the Rights Agreement may be amended by the
Board of Directors of the Corporation prior to the Distribution Date.  After the
Distribution Date, the provisions of the Rights Agreement may be amended by the
Board in order to cure any ambiguity, defect or inconsistency, to make changes
which do not adversely affect the interests of holders of Rights (excluding the
interests of any Acquiring Person), or, subject to certain limitations, to
shorten or lengthen any time period under the Rights Agreement.

          Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Corporation, including, without limitation, the
right to vote or to receive dividends. While the distribution of the Rights will
not be taxable to stockholders of the Corporation, stockholders may, depending
upon the circumstances, recognize taxable income should the Rights become
exercisable or upon the occurrence of certain events thereafter.

          A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 10 dated
__________, 1996.  A copy of the Rights Agreement is available free of charge
from the Corporation.  This summary description of the Rights does not purport
to be complete and is qualified in its entirety by reference to the Rights
Agreement, which is hereby incorporated herein by reference.

                                      C-4