SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-A

                For Registration of Certain Classes of Securities
                    Pursuant to Section 12(b) or 12(g) of the
                         Securities Exchange Act of 1934

                             Boston Biomedica, Inc.
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             (Exact Name Of Registrant As Specified In Its Charter)

                 Massachusetts                                04-2652826
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            (State of Incorporation)                       (I.R.S. Employer
                                                          Identification No.)

375 West Street, West Bridgewater, Massachusetts                02379
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    (Address of Principal Executive Offices)                 (Zip Code)

       If this Form relates to the registration    If this Form relates to the
       of a class of securities pursuant to        registration of a class of
       Section 12(b) of the Exchange Act and is    securities pursuant to
       effective pursuant to General Instruction   Section 12(g) of the Exchange
       A.(c), check the following box. / /         Act and is effective pursuant
                                                   to General Instruction A.(d),
                                                   check the following box. /X/

           Securities Act registration statement file number to which
                             this Form relates: N/A

        Securities to be registered pursuant to Section 12(b) of the Act:

       Title Of Each Class                        Name Of Each Exchange On Which
        To Be So Registered                       Each Class Is To Be Registered

               None
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        Securities to be registered pursuant to Section 12(g) of the Act:

                         Preferred Share Purchase Rights
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                                (Title of Class)


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                                (Title of Class)



                 INFORMATION REQUIRED IN REGISTRATION STATEMENT

ITEM 1.   DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

     On February 27, 2003, the Board of Directors of Boston Biomedica, Inc. (the
"Company") declared a dividend of one preferred share purchase right (a "Right")
for each outstanding share of common stock of the Company (the "Common Shares")
on March 21, 2003 (the "Record Date") to the stockholders of record on that
date. Each Right entitles the registered holder to purchase from the Company one
one-thousandth of a share of Series A Junior Participating Preferred Stock, par
value $0.01 per share (the "Preferred Shares"), of the Company, at a price of
$45.00 per one one-thousandth of a Preferred Share (the "Purchase Price"),
subject to adjustment. The description and terms of the Rights are set forth in
a Rights Agreement, dated as of February 27, 2003 as the same may be amended
from time to time (the "Rights Agreement") between the Company and Computershare
Trust Company, Inc., as Rights Agent (the "Rights Agent").

     Until the earlier to occur of (i) 10 days following a public announcement
that a person or group of affiliated or associated persons has acquired
beneficial ownership of 15% or more of the outstanding Common Shares or any
person or group who as of February 27, 2003 beneficially owned 15% or more of
the outstanding Common Shares acquired beneficial ownership of any additional
Common Shares (with certain exceptions, an "Acquiring Person"), or (ii) 10
business days (or such later date as may be determined by action of the Board of
Directors prior to such time as any Person becomes an Acquiring Person)
following the commencement of, or announcement of an intention to make, a tender
offer or exchange offer the consummation of which would result in the beneficial
ownership by a person or group of 15% or more of such outstanding Common Shares
(the earlier of such dates being called the "Distribution Date"), the Rights
will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificate with a copy
of the Summary of Rights attached thereto.

     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 or 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 the
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 Certificates") will be mailed to holders of record
of the Common Shares as of the Close of Business on the Distribution Date and
such separate Right Certificates alone will evidence the Rights.

     The Rights are not exercisable until the Distribution Date. The Rights will
expire on February 27, 2013 (the "Final Expiration Date"), unless the Final
Expiration Date is advanced or

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extended or unless the Rights are earlier redeemed or exchanged by the Company,
in each case, as described below.

     The Purchase Price payable, and the number of Preferred Shares or other
securities or property 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 periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

     The number of outstanding Rights and the number of one one-thousandths 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 quarterly dividend
payment of 1000 times the dividend declared per Common Share. In the event of
liquidation, the holders of the Preferred Shares will be entitled to an
aggregate payment of 1000 times the aggregate payment made per Common Share.
Each Preferred Share will have 1000 votes, voting together with the Common
Shares. In the event of any merger, consolidation or other transaction in which
Common Shares are exchanged, each Preferred Share will be entitled to receive
1000 times the amount received per Common Share. These rights are protected by
customary antidilution provisions.

     Because of the nature of the Preferred Shares' dividend, liquidation and
voting rights, the value of the one one-thousandth interest in a Preferred Share
purchasable upon exercise of each Right should approximate the value of one
Common Share.

     In the event that any person becomes an Acquiring Person, each holder of a
Right, other than Rights beneficially owned by the Acquiring Person and its
Affiliates and Associates (which will thereafter be void), will thereafter have
the right to receive upon exercise that number of Common Shares having a market
value of two times the exercise price of the Right. In the event that, at any
time after a Person becomes an Acquiring Person, the Company is acquired in a
merger or other business combination transaction or 50% or more of its
consolidated assets or earning power are sold, proper provision will be made so
that each holder of a Right will thereafter have the right to receive, upon the
exercise thereof at the then current exercise price of the Right, that number of
shares of common stock of the person with whom the Company has engaged in the
foregoing transaction (or its parent) which at the time of such transaction will
have a market value of two times the exercise price of the Right.

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     If the Company does not have sufficient Common Shares to satisfy such
obligation to issue Common Shares, or if the Board of Directors so elects, the
Company shall deliver upon payment of the exercise price of a Right an amount of
cash or securities or other assets equivalent in value to the Common Shares
issuable upon exercise of a Right; provided that, if the Company fails to meet
such obligation within 30 days following the first occurrence of an event
triggering the right to purchase Common Shares, the Company must deliver, upon
exercise of a Right but without requiring payment of the exercise price then in
effect, Common Shares (to the extent available) and then, if necessary Preferred
Shares (to the extent available) and then, if necessary, cash equal in value to
the difference between the value of the Common Shares otherwise issuable upon
the exercise of a Right and the exercise price then in effect. The Board of
Directors may extend the 30-day period described above for up to an additional
60 days to permit the taking of action that may be necessary to authorize
sufficient additional Common Shares to permit the issuance of Common Shares upon
the exercise in full of the Rights.

     At any time after any Person becomes an Acquiring Person and prior to the
acquisition by any person or group of a majority of the outstanding Common
Shares, the Board of Directors of the Company may exchange the Rights (other
than Rights owned by such person or group which have become void), in whole or
in part, for Common Shares or Preferred Shares at an exchange ratio of one
Common Share, or a fractional Preferred Share (or other preferred stock)
equivalent in value thereto, per Right (subject to adjustment).

     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 or Common Shares will be
issued (other than fractions which are integral multiples of one one-thousandth
of a Preferred Share, which may, at the election of the Company, be evidenced by
depositary receipts) and in lieu thereof, an adjustment in cash will be made
based on the current market price of the Preferred Shares or the Common Shares.

     At any time prior to the time any Person becomes an Acquiring Person, the
Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $0.001 per Right (the "Redemption Price") payable, at the
option of the Company, in cash, shares of Common Stock or such other form of
consideration as the Board of Directors of the Company shall determine. The
redemption of the Rights may be made effective at such time, on such basis and
with such conditions as the Board of Directors in its sole discretion may
establish. Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

     For so long as the Rights are then redeemable, the Company may, except with
respect to the Redemption Price, amend the Rights Agreement in any manner. After
the Rights are no longer redeemable, the Company may, except with respect to the
Redemption Price, amend the Rights Agreement in any manner that does not
adversely affect the interests of holders of the Rights.

     Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.

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     The Rights Agreement is incorporated herein by reference. This summary
description of the Rights does not purport to be complete and is qualified in
its entirety by reference to the Rights Agreement.

ITEM 2.   EXHIBITS.

     1.   Rights Agreement between the Registrant and Computershare Trust
          Company, Inc., as Rights Agent, dated as of February 27, 2003
          (including Form of Right Certificate attached as Exhibit B)
          (incorporated by reference from Exhibit 4 to the Registrant's Current
          Report on Form 8-K, dated March 11, 2003, filed with respect to the
          Preferred Share Purchase Rights).

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                                    SIGNATURE

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the Registrant has duly caused this Registration Statement to be signed
on its behalf by the undersigned, thereunto duly authorized.


Dated: March 11, 2003              BOSTON BIOMEDICA, INC.


                                   By: /s/ Kevin Quinlan
                                       -----------------------------------------
                                       Kevin Quinlan, President, Chief Operating
                                       Officer and Treasurer

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