BOSTON BIOMEDICA INC
10-K, 1997-03-31
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

(Mark One)

[X]       Annual  Report  Pursuant  to  Section  13 or 15(d)  of the  Securities
          Exchange Act of 1934
For the fiscal year ended December 31, 1996
[ ]       Transition  Report  Pursuant to Section 13 or 15(d) of the  Securities
          Exchange Act of 1934

For the transition period from ___________________ to _______________________
Commission file number 000-21615 .





                             BOSTON BIOMEDICA, INC.
                             ----------------------
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)





              MASSACHUSETTS                                  04-2652826      
              -------------                                  ----------      
     (State or other Jurisdiction of                      (I.R.S. Employer   
        Incorporation or Organization)                   Identification No.)
                                                      
            375 WEST STREET,                                 
     WEST BRIDGEWATER, MASSACHUSETTS                            02379    
     -------------------------------                            -----    
(Address of Principal Executive Offices)                      (zip code)
                                                             

Registrant's telephone number, including area code    (508) 580-1900
                                                      --------------
   
           SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OFTHE ACT:
                                      None

           SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                     Common Stock, par value $.01 per share

         Indicate  by check  whether the  registrant:  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.    Yes  [X]    No  [ ]

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  be  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. [X]

         The aggregate  market value of the voting stock held by  non-affiliates
of the  Registrant at February 28, 1997 was  $30,074,188.  The aggregate  market
value was  computed  by  reference  to the closing  price as of that date.  (For
purposes of calculating this amount only, all directors,  executive officers and
greater than 10% shareholders of the Registrant are treated as affiliates.)

         The  number of shares  outstanding  of the  Registrant's  only class of
common stock as of February 28, 1997 was 4,378,157.

                       DOCUMENTS INCORPORATED BY REFERENCE
                       -----------------------------------

         Portions of the  Registrant's  definitive  Proxy Statement for its 1997
annual meeting,  are incorporated by reference into Part III of this Report, and
portions of the Registrants Registration Statement on Form S-1 (Registration No.
333-10759) are incorporated by reference into Part IV of this Report.


================================================================================




                                     PART I


ITEM 1. BUSINESS


         The Company is a  worldwide  provider of  proprietary  quality  control
products  for use with in vitro  diagnostic  test  kits  ("test  kits")  for the
detection,  analysis and  monitoring of  infectious  diseases,  including  AIDS,
Hepatitis  and Lyme  Disease.  These  products are used to develop test kits, to
permit the monitoring of laboratory equipment and personnel,  and to help ensure
the  accuracy of test  results.  The  Company's  products are derived from human
plasma and serum using proprietary manufacturing processes. The Company believes
its Quality Control Panel products are viewed as the current  industry  standard
for the  independent  assessment of the  performance  of HIV and Hepatitis  test
kits. The Company also manufactures  diagnostic test kit components and provides
specialty  laboratory   services,   including  clinical  trials.  The  Company's
customers include test kit manufacturers,  regulatory  agencies and end-users of
test kits such as blood banks,  hospital  laboratories  and  clinical  reference
laboratories.  Currently the Company's  products are used in connection with the
detection of more than 15  infectious  diseases,  and its  specialty  laboratory
services are used in connection with the detection of over 100 such diseases.


         The Company's  strategy is to leverage its scientific  capabilities  in
microbiology,  immunology,  virology, and molecular biology to (i) capitalize on
the emerging  end-user  market,  (ii) develop new products and  services,  (iii)
enhance  technical  leadership,   (iv)  capitalize  on  complementary   business
operations, and (v) pursue strategic acquisitions and alliances.


INDUSTRY OVERVIEW


         Infectious Disease Test Kits and Testing Methods.  Test kits contain in
one  compact  package  all  of the  materials  necessary  to  run a test  for an
infectious  disease.   These  include  the  disposable  diagnostic   components,
instructions,  and reaction  mixing  vessels  (generally  96-well plates or test
tubes)  which  are  coated  with  the  relevant   infectious  disease  antigens,
antibodies  or other  materials.  To perform the test,  either a technician or a
specially  designed  instrument  typically mixes the solutions from the test kit
with human blood  specimens  in a specific  sequence  according  to the test kit
instructions.  The mixture must then "incubate" for up to 18 hours, during which
time a series of biochemical  reactions trigger signals  (including color, light
and  radioactive  count)  which  indicate  the presence or absence and amount of
specific markers of the particular disease in the specimen.


         Test kits generally employ one of three methods for infectious  disease
testing: microbiology, immunology or molecular biology. Traditional microbiology
tests use a growth medium that enables an organism, if present, to replicate and
be detected visually.  Immunology tests detect the antigen or antibody, which is
an  indicator  (marker)  of the  pathogen  (e.g.,  virus,  bacterium,  fungus or
parasite).  Molecular diagnostic methods,  such as the polymerase chain reaction
("PCR"),  test for the presence of nucleic acids (DNA or RNA) which are specific
to a particular pathogen.


         Most  infectious   disease  tests  currently  use   microbiological  or
immunological  methods.  However,  molecular diagnostic methods are increasingly
being used in research laboratories worldwide and the Company believes that soon
they will be accepted for routine use in the clinical  laboratory  setting.  The
Company believes that the advent of molecular diagnostic methods will complement
rather  than  diminish  the need to test by  microbiological  and  immunological
procedures,  because different test methods reveal different information about a
disease  state.  The Company  anticipates  that as new test methods  become more
widespread, they will account for a larger portion of the Company's business.


         Quality  Control for In Vitro  Diagnostic Test Kits.  Customers  employ
quality control  products in order to develop and use test kits (both infectious
and non-infectious).  Quality control products help ensure that test kits detect
the  correct  analyte   (specificity),   detect  it  the  same  way  every  time


                                      -2-







(reproducibility  or  precision),  and  detect  it  at  the  appropriate  levels
(sensitivity).  The  major  element  of  this  quality  control  process  is the
continuous  evaluation  of test kits by the testing of  carefully  characterized
samples that resemble the donor or patient samples routinely used with the test.
Quality  control  is used in both  the  infectious  and  non-infectious  disease
markets, although currently it is not as prevalent among end-users of infectious
disease test kits.


         The market for quality control products consists of three main customer
segments:  (i) manufacturers of test kits, (ii) regulatory agencies that oversee
the  manufacture  and use of test kits and (iii) end-users of test kits, such as
hospitals, clinical reference laboratories and blood banks.


COMPANY PRODUCTS AND SERVICES


OVERVIEW


         The  Company  offers  three  product   groups  in  infectious   disease
diagnostics:  Quality  Control  Panels,  Accurun(TM) Run Controls and Diagnostic
Components.  These products are used  throughout the entire test kit life cycle,
from initial research and development,  through the regulatory  approval process
and test  kit  production,  to  training,  troubleshooting  and  routine  use by
end-users.  The  Company's  Quality  Control  Panels,  which combine human blood
specimens with comprehensive  quantitative data useful for comparative analysis,
help ensure that test kits detect the correct analyte  (specificity),  detect it
the same way every  time  (reproducibility),  and  detect it at the  appropriate
levels (sensitivity). The Company's Accurun(TM) Run Controls enable end-users of
test kits to confirm the  validity of results by  monitoring  test  performance,
thereby minimizing false negative test results and improving error detection. In
addition, the Company provides Diagnostic Components, which are custom processed
human plasma and serum products, to test kit manufacturers.


         The  Company's  specialty  clinical  laboratory  services  include both
routine and sophisticated infectious disease testing in microbiology, immunology
and  molecular  biology.  The Company  seeks to focus its  specialty  laboratory
services in advanced areas of infectious disease testing,  and provides contract
research and clinical trials for domestic and foreign test kit manufacturers.


PRODUCTS


         The Company manufactures its products from human plasma and serum which
are obtained  from  nonprofit and  commercial  blood  centers,  primarily in the
United  States.   The  Company  has  acquired  and  developed  an  inventory  of
approximately  50,000 individual blood units and specimens (with volumes ranging
from 1 ml to 800 ml) which provides most of the raw material for its products.


         QUALITY CONTROL PANELS


         Quality Control Panels consist of blood products  characterized  by the
presence or absence of  specific  disease  markers  and a Data Sheet  containing
comprehensive  quantitative data useful for comparative analysis.  These Quality
Control  Products are designed for measuring  overall test kit  performance  and
laboratory proficiency,  as well as for training laboratory  professionals.  The
Company's Data Sheets,  containing  comprehensive  quantitative  data useful for
comparative  analysis,  are an integral  part of its Quality  Control  Products.
These Data  Sheets are  created as the result of  extensive  testing of proposed
panel  components  in both  the  Company's  laboratories  and at  major  testing
laboratories on behalf of the Company in the United States and Europe, including
national  public health  laboratories,  research and clinical  laboratories  and
regulatory agencies. These laboratories are selected based on their expertise in
performing the appropriate tests on a large scale in an actual clinical setting;
this testing process provides the Company's  customers with the benefit that the
Quality  Control Panels they purchase from the Company have  undergone  rigorous
testing  in  actual  clinical  settings.  In  addition,   the  Company  provides
information on its Data Sheets on the reactivity of panel  components in all FDA
licensed test 

                                      -3-





kits and all leading European test kits for the target pathogen,  as well as for
all other appropriate markers of this pathogen.  For example,  the Company's HIV
panel Data Sheets  include  anti-HIV by IFA, ELISA and western blot; HIV antigen
by ELISA; and HIV RNA by several molecular diagnostic procedures.  The Company's
Data Sheets require  significant time and scientific  expertise to prepare.  The
following table describes the types of Quality Control Panel products  currently
offered by the Company.

<TABLE>
<CAPTION>

                                          QUALITY CONTROL PANEL PRODUCTS

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

PRODUCT LINE                     DESCRIPTION                         USE                               CUSTOMERS
- -------------------------------- ----------------------------------- --------------------------------- ---------------------

<S>                             <C>                                  <C>                               <C>
Seroconversion Panels            Plasma samples collected from a     Compare the clinical              Test kit
                                 single individual overra specific   sensitivity of competing          manufacturers and
                                 time period showing conversion      manufacturers' test kits,         regulators.
                                 from negative to positive for       enabling the user to assess the
                                 markers of an infectious            sensitivity of a test in
                                 disease.-                           detecting a developing
                                                                     antigen/antibody.
- -------------------------------- ----------------------------------- --------------------------------- ---------------------

Performance Panels               A set of 10 to 50 serum and         Determine test kit performance    Test kit
                                 plasma samples collected from       against all expected levels of    manufacturers and
                                 many different individuals and      reactivities in the evaluation    regulators.
                                 characterized for the presence or   of new, modified and improved
                                 absence of a particular disease     test methods.
                                 marker.
- -------------------------------- ----------------------------------- --------------------------------- ---------------------

Sensitivity Panels               Precise dilutions of human plasma   Evaluate the low-end analytical   Test kit
                                 or serum human plasma or serum      sensitivity of a test kit.        manufacturers
                                 containing a known amount of an
                                 infectious disease marker as
                                 calibrated against international
                                 standards.
- -------------------------------- ----------------------------------- --------------------------------- ---------------------

Qualification Panels             Dilutions of human plasma or        Demonstrate the consistent        Clinical reference
                                 serum manifesting a full range of   lot-to-lot performance of test    laboratories, blood
                                 reactivities in test kits for a     kits, troubleshoot problems,      banks, and hospital
                                 specific marker.                    evaluate proficiency, and train   laboratories
                                                                     laboratory technicians.
- -------------------------------- ----------------------------------- --------------------------------- ---------------------

OEM Panels                       Custom-designed Qualification       Train laboratory personnel on     Custom designed
                                 Panels for regulators and test      new test kits or equipment.       with test kit
                                 kit manufacturers for                                                 manufacturers and
                                 distribution to customers or for                                      regulators as an
                                 internal use.                                                         end-user product or
                                                                                                       for internal use.
- -------------------------------- ----------------------------------- --------------------------------- ---------------------
</TABLE>

         The  Company  first  introduced  Quality  Control  Panels in 1987.  The
Company  currently offers a broad range of Quality Control Panels that address a
variety of needs of  manufacturers  and regulators of test kits as well as blood
banks,  hospitals,  clinical  laboratories and other  end-users.  Prices for the
Company's  quality control  seroconversion,  performance and sensitivity  panels
range from $450 to $2,000 each, and its  qualification and OEM panels range from
$100 to $200 per panel.


                                      -4-




                  Seroconversion  and Performance Panels are comprised of unique
and rare plasma specimens  obtained from individuals  during the short period of
time when the markers for a particular  disease are converting  from negative to
positive.  As a result,  the quantity of any such panel is limited,  so that the
Company must replace these panels as they sell out with another panel  comprised
of different  specimens  equally unique and rare. The Company  believes that its
inventory  and  relationships  with  blood  centers  affords  it  a  competitive
advantage in acquiring  such plasma for  replacement  panels and  developing new
products to meet market demand.  There can be no assurance that the Company will
be able to continue to obtain such specimens.


         Quality Control Panels currently span the immunologic  markers for AIDS
(i.e.,  HIV),  Hepatitis B and C, Lyme Disease and ToRCH  (Toxoplasma,  rubella,
cytomegalovirus  and herpes simplex virus).  New introductions this year include
molecular Performance Panels for HBV and HCV,  qualification panels for HIV, HBV
and HCV, and additional Seroconversion Panels for HIV, HBV, and HCV.


         ACCURUN(TM) RUN CONTROLS


         End-users  of test kits utilize Run Controls to confirm the validity of
results by monitoring test performance,  thereby  minimizing false negative test
results and  improving  error  detection.  Run  controls  consist of one or more
specimens of known  reactivity  that are tested  together  with donor or patient
samples in an assay to  determine  whether  the assay is  performing  within the
manufacturer's  specifications.  Clinical  laboratories  generally process their
patient  specimens in a batch processing  mode, and typically  include 25 to 100
specimens to be tested in each batch (a "run").  Large  laboratories may perform
several runs per day, while smaller  laboratories  may perform only a single run
each day, or sometimes only several runs per week. A clinical laboratory using a
Run Control will place the Run Control  product in a testing well or  test-tube,
normally used for a specimen,  and will test it in the same manner that it tests
the donor or patient specimens. It will then compare the results generated to an
acceptable range, determined by the user, to measure whether the other specimens
are  being  accurately  tested.  The  Run  Control  result  must be  within  the
acceptable range to be considered  valid. This is often tracked visually using a
Levey-Jennings chart.  Depending upon a particular  laboratory's quality control
practices,  it may use several  Run  Controls on each run or it may simply use a
Run Control in a single run at the beginning and end of the day.


         The  Company's  Accurun(TM)  family  of  products  is  targeted  at the
emerging  market of  end-users  of  infectious  disease  test kits.  The Company
believes  that it offers  the most  comprehensive  line of Run  Controls  in the
industry,  and that its Accurun(TM)  products,  in combination  with its Quality
Control  Panel  products,  provide an  extensive  line of  products  for quality
assurance in  infectious  disease  testing.  The Company  intends to continue to
expand its line of Accurun(TM)  products,  thereby  providing its customers with
the convenience and cost  effectiveness of a single supplier for independent run
controls.


         The Company  introduced its first four Accurun(TM) Run Control products
in the fourth  quarter of 1993 and has since  developed and released for sale an
additional  25  Accurun(TM)  products.  A limited  number of these  products are
available for diagnostic purposes;  the others currently are limited to research
use. Current Accurun(TM) Run Control products range in price from $15 to $45 per
milliliter and are described in the following table.



                                      -5-

<TABLE>
<CAPTION>


                                               ACCURUN(TM) RUN CONTROLS

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


         PRODUCT LINE                     DESCRIPTION              CURRENT NUMBER OF          PRIMARY CUSTOMERS
                                                                       PRODUCTS
- ------------------------------- -------------------------------- ---------------------- ------------------------------
<S>                              <C>                               <C>                  <C>

   Accurun(TM)1-99              Multi-marker Run Control                 4              Blood Banks
                                for immunological tests
- ------------------------------- -------------------------------- ---------------------- ------------------------------

   Accurun(TM)100-199           Single-marker Run Control                18             Hospitals and clinical
                                for immunological tests                                 reference laboratories
- ------------------------------- -------------------------------- ---------------------- ------------------------------

   Accurun(TM)200-299           Multi-marker Run Control                 1              Research and specialty
                                for molecular tests                                     laboratories
- ------------------------------- -------------------------------- ---------------------- ------------------------------

   Accurun(TM)300-399           Single-marker Run Control                3              Research and specialty
                                for immunological tests                                 laboratories
- ------------------------------- -------------------------------- ---------------------- ------------------------------

   Accurun(TM)800-899           Negative Run Control for                 3              All laboratories
                                immunological and molecular
                                tests
- ------------------------------- -------------------------------- ---------------------- ------------------------------
</TABLE>




         The Company has received  510(k)  clearance  from the FDA to market its
Accurun  1(R)  line,  for  diagnostic  purposes,  and  intends to apply for such
clearance for the remainder of its  Accurun(TM)  products.  All of the Company's
Accurun Run Controls will require FDA premarket  clearance or approval  prior to
being marketed for diagnostic  use. An application  for clearance for diagnostic
use for one additional  Accurun(TM) product has been submitted by the Company to
the FDA, and the Company  anticipates  that  applications  for  approximately 16
additional Accurun(TM) products will be prepared and submitted to the FDA by the
end of 1997.  Failure to  obtain,  or delays in  obtaining,  such  clearance  or
approval would  adversely  affect the Company's  strategy of capitalizing on the
end-user market.


         DIAGNOSTIC COMPONENTS


         Diagnostic   Components  are  the  individual   materials  supplied  to
infectious  disease test kit  manufacturers  and combined  (often after  further
processing by the manufacturer) with other materials to become the various fluid
components  of the  manufacturer's  test kit.  The Company  supplies  Diagnostic
Components  in four  product  lines:  Normal Human  Plasma,  Normal Human Serum,
Basematrix,  and  Characterized  Disease  State Serum and Plasma.  Normal  Human
Plasma  and Serum are both the clear  liquid  portion  of blood  which  contains
proteins,  antibodies,  hormones  and other  substances,  except  that the Serum
product  has  had  the  clotting  factors  removed.  Basematrix,  the  Company's
proprietary  processed  serum product that has been  chemically  converted  from
plasma, is designed to be a highly-stable, lower cost substitute for most Normal
Human  Serum and Plasma  applications.  Characterized  Disease  State  Serum and
Plasma are collected  from  specific  blood donors  pre-selected  because of the
presence or absence of a particular disease marker. The Company often customizes
its  Diagnostic  Components by further  processing  the raw material to meet the
specifications of the test kit manufacturer. The Company's Diagnostic Components
range in price  from  $0.25 to $60 per  milliliter,  with the  majority  selling
between $0.50 and $5 per milliliter.



                                      -6-



SERVICES


         The Company  seeks to focus its specialty  laboratory  services in both
the clinical  reference  laboratory  testing and advanced  research  areas.  The
Company  concentrates its services in those areas of infectious  disease testing
which  are  complementary  to  its  quality  control  and  diagnostic   products
businesses.


         Specialty  Clinical  Laboratory   Testing.   The  Company  operates  an
independent  specialty  clinical  laboratory  which  performs  both  routine and
sophisticated  infectious  disease  testing  in  microbiology,   immunology  and
molecular  biology,  with special  emphasis in AIDS,  Viral  Hepatitis  and Lyme
Disease.  The  Company's  specialty  clinical  laboratory  combines  traditional
microbiology,  advanced immunology, and current molecular diagnostic techniques,
such as PCR, to detect and identify  microorganisms,  their antigens and related
antibodies,  and their  nucleic  acids (i.e.,  DNA and RNA).  Customers  include
physicians, clinics, hospitals and other clinical/research laboratories.


         Contract  Research.  The Company offers a variety of contract  research
services in molecular  biology,  cell  biology and  immunology  to  governmental
agencies,   diagnostic  test  kit  manufacturers  and  biomedical   researchers.
Molecular  biology  services  include DNA  sequencing,  recombinant DNA support,
probe  labeling  and custom PCR assays.  Cell  biology and  immunology  services
include sterility testing,  virus infectivity  assays,  cultivations of virus or
bacteria from clinical specimens,  preparation of viral or bacterial antigens or
nucleic acids, and production of antibodies.  The Company is currently providing
research  services for assessment of the efficiency of candidate HIV vaccines in
a monkey model system under two separate  contracts with the National  Institute
for Allergy and Infectious Disease ("NIAID"),  a part of the National Institutes
of Health ("NIH").  Each of these contracts has a two year term which expires in
September  1997.  In  addition,  since  1983,  the  Company,  through  its  BTRL
subsidiary,  has  provided  blood  processing  and  repository  services for the
National Cancer Institute ("NCI"), also a part of the NIH. The repository stores
over 2,000,000 specimens and processes or ships up to several thousand specimens
per week in support of various NIH cancer and virus research programs. A new one
year NCI repository contract was signed in February 1997 which includes four one
year renewal options  exercisable by NCI. The total value of the contract in the
first year is $916,000, and including all options, is $4.8 million. There can be
no assurance that any of these options will be exercised.


         Clinical Trials.  The Company conducts clinical trials for domestic and
foreign test kit manufacturers.  Test kit manufacturers must conduct such trials
to collect data for  submission  to the United  States FDA and other  regulatory
agencies.  By  providing  this  service,  the Company is able to maintain  close
contact with test kit manufacturers and regulators,  and is able to evaluate new
technologies  in various stages of  development.  The Company  believes that the
reputation of its laboratory and scientific  staff,  its large number of Quality
Control Panels,  and its inventory of  characterized  serum and plasma specimens
assist the Company in marketing its clinical  trial  services to its  customers.
The  Company has  performed  clinical  trials for a number of United  States and
foreign  test kit  manufacturers  seeking  to  obtain  FDA  approval  for  their
infectious disease test kits.


         Drug Screening  Program.  As a subcontractor for an NIH AIDS grant held
by the University of North Carolina at Chapel Hill, the Company has  established
an anti-HIV drug  screening  program to test a large number of natural  products
(largely plant derivatives) to determine whether they inhibit HIV replication in
an in vitro assay system. These in vitro assays are also offered as a service to
researchers  and  pharmaceutical  companies  who wish to test various  candidate
anti-viral agents for anti-HIV activity.



                                      -7-



RESEARCH AND DEVELOPMENT


         The  Company's  research  and  development  effort  is  focused  on the
development of (i) new and improved  Quality  Control  Products for the emerging
end-user  market,  (ii) new products for existing  customers,  (iii)  Diagnostic
Components  for use with  test  kits for  both  new test  methodologies  and new
diseases,  and (iv)  infectious  disease  testing  services  using PCR and other
amplification  assays for AIDS,  Viral  Hepatitis,  Lyme Disease and  Chlamydia,
among  others.  The Company has  approximately  20 full or  part-time  employees
dedicated to its research and development effort. For 1996 the Company increased
spending on research and  development  as a percentage  of revenues  compared to
1995 and expects to continue to increase  such  expenditures  as a percentage of
revenues for the next several years. See  "Management's  Discussion and Analysis
of Financial  Condition and Results of Operations -- Results of Operations." The
Company's   research   scientists   work  closely  with  sales,   marketing  and
manufacturing  personnel  to identify  and  prioritize  the  development  of new
products and services.


         The   Company's   product   development   activities   center   on  the
identification  and  characterization  of materials for the  manufacture  of new
Quality Control Products and the replacement of sold-out products.  During 1996,
the Company introduced 30 new Seroconversion,  Performance and Sensitivity Panel
products as well as 25 new Accurun(TM) Run Controls;  in addition,  during 1996,
the Company released six Qualification Panel products. The Company is developing
new Quality Control  Products for use with molecular  diagnostic  tests for HIV,
HCV and HBV.  Recently  the Company  expanded its Quality  Control  Product line
beyond the retrovirus and Viral Hepatitis  diagnostics  area to include sexually
transmitted diseases (e.g., Syphilis), tick-borne diseases (e.g., Lyme Disease),
and respiratory and other infections  (e.g.,  Tuberculosis) and is continuing to
develop new Quality Control  Products for these and other diseases.  The Company
has   increased  the  number  of  Quality   Control   Products  it  offers  from
approximately 20 in 1990 to approximately 191 products in 1996.


         The Company is also  developing  new and  improved  infectious  disease
specialty  tests for Lyme Disease and other  tick-borne  diseases for use in its
specialty laboratory business.  The Company is also pursuing new applications of
PCR technology to infectious disease  diagnostics,  such as amplification assays
for the pathogens of AIDS, Viral Hepatitis,  Lyme Disease and Chlamydia, and for
the direct detection of other infectious agents in blood, tissues and other body
fluids.


         From time to time in the past,  the Company has funded a portion of its
research and development activities from grants provided by various agencies and
departments of the U.S. government. See "-- Services."


STRATEGIC ALLIANCES

         University  of North  Carolina at Chapel Hill.  The Company is directly
supporting  a drug  discovery  program  at UNC,  in which a  full-time  research
scientist is working to develop synthetic derivatives of anti-HIV compounds that
have been  discovered  pursuant to the Company's joint  collaboration  with UNC.
This  research  scientist is also working to  introduce  modifications  to these
derivatives that would make them more soluble,  less toxic, or otherwise enhance
their anti-viral properties. UNC has licensed to the Company exclusive worldwide
rights to three series of patent  applications filed by the Company and UNC with
respect  to  three  classes  of  anti-HIV  compounds.  Two such  compounds  have
exhibited  therapeutic indices in in vitro test model systems in excess of those
recorded  for AZT under  comparable  test  conditions.  The Company is expending
approximately  $100,000 per year for research and development  relating to these
compounds.  In  addition,  under this  license,  the Company  will also have the
rights to any new anti-HIV  compounds or derivatives  developed in the course of
this  sponsored  research,  provided  the  Company  obtains  certain  regulatory
approvals from the FDA. See "-- Services."


                                      -8-





         Ajinomoto  Co.,  Inc.  The  Company  entered  into  an  agreement  with
Ajinomoto  Co., Inc. in October 1995 pursuant to which the Company is performing
research regarding among other things,  whether tests for certain amino acids in
plasma  can be used to  determine  a person's  immune  status,  particularly  in
chronic  fatigue  syndrome.  This project is funded by Ajinomoto and has a three
year budget of approximately $1,000,000. Discoveries and inventions arising from
the research will be owned by Ajinomoto,  but the Company has the right of first
refusal to obtain  certain  exclusive  licenses  from  Ajinomoto of any patented
technology  arising  from the  research.  The  Company  is  entitled  to certain
royalties  based  upon a  percentage  of sales of  products  arising  out of the
research. This agreement expires in September 1998.


         BioSeq,  Inc. In October  1996,  the Company  entered  into a strategic
alliance  with  BioSeq,  Inc.  an  early  stage  biotechnology  company  that is
developing a technology that may,  through the use of pressure,  be able to more
precisely control chemical reactions.  The Company believes that this technology
may be useful for sequencing,  synthesizing and characterizing nucleic acids and
proteins, which may then allow for the more precise identification of infectious
disease agents. See also Note 4 to the Company's Notes to Consolidated Financial
Statements in Item 8 hereunder  regarding  the  Company's  investment in BioSeq,
Inc.


SALES AND MARKETING


         The Company's sales and marketing efforts are directed by a Senior Vice
President of Sales and Marketing  who  supervises 18 sales people and four other
full-time sales and marketing employees.


         The Company's  marketing  strategy is focused upon addressing the needs
of its customers in the infectious  disease testing market throughout the entire
test  kit  life-cycle,  from  initial  research  and  development,  through  the
regulatory   approval   process   and  test   kit   production,   to   training,
troubleshooting  and routine  use by  end-users  such as clinical  laboratories,
hospitals and blood banks.


         The Company recently has begun to focus its sales and marketing efforts
on the emerging  end-user  market for quality  control  products for  infectious
disease test kits.  To promote this  objective,  the Company has  implemented  a
major  marketing  platform,  known as "Total Quality System"  ("TQS").  TQS is a
package of Quality  Control  Products,  including the Company's  Accurun(TM) Run
Controls,  which is designed to provide  test kit  end-users  with the  products
needed  in  an  overall  quality  assurance   program.   These  products  enable
laboratories  to  evaluate  each of the key  elements  involved  in the  testing
process:  the test kit,  laboratory  equipment  and  laboratory  personnel.  The
Company believes that TQS effectively addresses the need for end-users to ensure
the accuracy of their test  results.  The Company  intends to continue to expand
its sales and marketing  activities with respect to its Accurun(TM)  line of Run
Control products.


         The  Company's  products are currently  sold through a  combination  of
telephone,  mail,  third party  distributors  and limited  direct sales efforts.
Domestically,  products are sold through an in-house tele-sales group consisting
of seven sales  representatives,  two sales  managers and one  customer  service
representative.  Internationally,  the Company  distributes  its  products  both
directly and through 18 independent  distributors  located in Japan,  Australia,
South America,  Southeast Asia, Israel and Europe.  The Company's  international
sales  manager  oversees  the  Company's  foreign  distributors.  Export  sales,
including sales to  distributors,  for the years ended December 31, 1994,  1995,
and 1996 were $2.3 million, $3.1 million, and $3.9 million, respectively.


         The  Company's  Specialty  Clinical  Laboratory  Testing  services  are
marketed  primarily  through a direct  domestic sales force  consisting of seven
sales representatives managed by a sales director. The sales representatives are
located throughout the eastern and mid-western United States. They are supported
internally by a client services representative.


                                      -9-





         The Company  emphasizes high quality  products and services,  technical
knowledge,  and responsiveness to customer needs in its marketing activities for
both products and services. The Company educates its distributors, customers and
prospective  customers about its products through a series of detailed marketing
brochures,  technical  bulletins and  pamphlets,  press releases and direct mail
pieces.  These  materials are  supplemented  by  advertising  campaigns in major
industry  publications,  technical  presentations,  and  exhibitions  at  local,
national and international trade shows and expositions.


CUSTOMERS


         The Company's  customers for Quality  Control  Products and  Diagnostic
Components  comprise  three major  groups:  (i)  international  diagnostics  and
pharmaceutical  manufacturing  companies,  such as Abbott Diagnostics,  Behring,
Boehringer  Mannheim,  Chiron,  Fujirebio,  Hoffman LaRoche,  Ortho  Diagnostics
(Johnson and Johnson),  Sanofi Diagnostics and Sorin Biomedica;  (ii) regulatory
agencies  such as the United States FDA, the British  Public  Health  Laboratory
Service, the French Institut National de la Transfusion Sanguine, and the German
Paul Ehrlich  Institute;  and (iii)  end-users of diagnostic  test kits, such as
hospital  clinical  laboratories,  public health  laboratories  and blood banks,
including the Swiss Red Cross, United Blood Services and Kaiser Permanente.  The
Company's  Specialty  Clinical  Laboratory Testing services are sold to hospital
and  clinical  laboratories,  blood  banks,  researchers  and other  health care
providers.  The Company's Contract Research services are typically offered under
contracts  to  governmental  agencies,  diagnostic  test kit  manufacturers  and
biomedical researchers.


         The Company does not have  long-term  contracts  with its customers for
Quality Control Products and Diagnostic  Components.  The Company's products are
sold to its  customers  pursuant  to  purchase  orders for  discrete  purchases.
Although the Company  believes that its  relationships  with these customers are
satisfactory,  termination  of the Company's  relationship  with any one of such
customers could have a material adverse effect on the Company.


         During the fiscal  years 1994,  1995 and 1996,  sales to the  Company's
three largest  customers  accounted for an aggregate of approximately 20% of the
Company's net sales,  although the  customers  were not identical in each period
and no one customer accounted for more than 10% of net sales.


MANUFACTURING AND OPERATIONS


         The  Company  manufactures  and  assembles  substantially  all  of  its
products at its facility in West Bridgewater,  Massachusetts.  Raw materials are
acquired  from a variety of vendors and through a program of donor  recruitment,
donor  screening,   product  collection,   product  characterization  and  donor
management. All important materials have multiple sources of supply.


         The  Company  also  operates a  specialty  clinical  laboratory  in New
Britain,  Connecticut  and a research and  development  laboratory in Rockville,
Maryland. See "Item 2 -- PROPERTIES."


COMPETITION


         The  market  for  the   Company's   products  and  services  is  highly
competitive.  Many of the Company's  competitors are larger than the Company and
have  greater  financial,  research,  manufacturing,  and  marketing  resources.
Important  competitive  factors  for  the  Company's  products  include  product
quality,  price,  ease of use,  customer  service and  reputation.  In a broader
sense,  industry competition is based upon scientific and technical  capability,
proprietary  know-how,  access to adequate  capital,  the ability to develop and
market  products  and  processes,  the ability to attract  and retain  qualified
personnel,  and the  availability of patent  protection.  To the extent that the
Company's  products  and  services do not reflect  technological  advances,  the
Company's  ability to compete in those  products and services could be adversely
affected.


                                      -10-






         In the area of Quality Control  Products,  the Company  competes in the
United States primarily with NABI (formerly North American Biologicals, Inc.) in
Run Controls and Quality  Control Panel  products,  and Dade  International  and
Blackhawk Biosystems Inc. in Run Controls.  In Europe, the Netherlands Red Cross
has recently begun offering several Run Control and panel products.  The Company
believes that all three of these competitors currently offer a more limited line
of products than the Company, although there can be no assurance these companies
will not expand their product lines.


         In  the  Diagnostic  Components  area,  the  Company  competes  against
integrated plasma collection and processing companies such as Serologicals, Inc.
and NABI, as well as smaller,  independent plasma collection centers and brokers
of plasma products.  In the Diagnostic  Components area, the Company competes on
the  basis  of  quality,  breadth  of  product  line,  technical  expertise  and
reputation.


         In the Specialty  Clinical  Laboratory  Testing services portion of the
Company's business, it competes with large national reference laboratories, such
as LabCorp of America,  Corning  Clinical  Laboratories  and SmithKline  Beecham
Clinical  Laboratories,  as well as several independent  regional  laboratories,
hospital  laboratories,  government  contract  laboratories  and large  research
institutions.  The Company  believes that by focusing on the specialty  clinical
laboratory  market,  it is able to offer  its  customers  a  higher  value-added
service on the more complex  diagnostic tests than the larger national reference
laboratories.

INTELLECTUAL PROPERTY

         None of the Company's Quality Control Products or Diagnostic Components
have been  patented.  The Company has decided to hold as trade  secrets  current
technology  used to  prepare  Basematrix  and other  blood-based  products.  The
Company relies  primarily on a combination  of trade secrets and  non-disclosure
and confidentiality  agreements, and in certain limited circumstances,  patents,
to establish and protect its proprietary  rights in its technology and products.
There  can be no  assurance  that  others  will  not  independently  develop  or
otherwise acquire the same, similar or more advanced trade secrets and know-how.

         The Company has two United  States  patents and,  jointly with UNC, has
filed three series of United States and foreign patent applications  relating to
compounds,  pharmaceutical  compositions  and therapeutic  methods in connection
with the Company's drug discovery program at UNC.

         The Company has no reason to believe that its products and  proprietary
methods  infringe the  proprietary  rights of any other  party.  There can be no
assurance,  however,  that other parties will not assert  infringement claims in
the future.


GOVERNMENT REGULATION


         The manufacture and distribution of medical devices, including products
manufactured  by the Company that are intended for in vitro  diagnostic use, are
subject to extensive  government  regulation  in the United  States and in other
countries.


         In the  United  States,  the Food,  Drug,  and  Cosmetic  Act  ("FDCA")
prohibits the  marketing of in vitro  diagnostic  products  until they have been
cleared or approved by the FDA, a process that is time-consuming, expensive, and
uncertain.  In  vitro  diagnostic  products  must be the  subject  of  either  a
premarket  notification clearance (a "510(k)") or an approved premarket approval
application  ("PMA").  With  respect  to  devices  reviewed  through  the 510(k)
process,  a Company may not market a device for diagnostic use until an order is
issued by FDA finding the product to be  substantially  equivalent  to a legally
marketed  device.  A  510(k)  submission  may  involve  the  presentation  of  a
substantial  volume  of  data,  including  clinical  data,  and  may  require  a
substantial  period of review.  With respect to devices reviewed through the PMA
process,  a  Company  may not  market  a device  until  FDA has  approved  a PMA
application,  which must be supported by extensive data,  including  preclinical
and clinical trial data, literature,  and manufacturing information to prove the
safety and effectiveness of the device.


                                      -11-




         The Company's  Accurun Run Controls,  when marketed for diagnostic use,
have  been  classified  by  the  FDA  as  medical  devices.   The  Accurun  1(R)
Multi-Marker Run Control, which include eight analytes, has been cleared through
the 510(k)  process.  The  Company  expects  that,  in the  future,  most of its
products that need FDA premarket review also will be reviewed through the 510(k)
process. The FDA could, however,  require that some products be reviewed through
the PMA  process,  which  generally  involves  a longer  review  period  and the
submission  of more  information  to FDA.  There  can be no  assurance  that the
Company will obtain  regulatory  approvals on a timely basis, if at all. Failure
to obtain  regulatory  approvals  in a timely  fashion  or at all  could  have a
material adverse effect on the Company.


         All of the Company's  Quality Control  Products,  with the exception of
Accurun  1(R),  are marketed  "for  research use only," which do not require FDA
premarket  clearance or approval,  and not for diagnostic uses, which do require
FDA premarket clearance or approval. The labeling of these products limits their
use to research. It is possible, however, that some purchasers of these products
may use them for  diagnostic  purposes  despite the  Company's  intended use. In
these  circumstances,  the FDA could allege that these products should have been
cleared or  approved by the FDA prior to  marketing,  and  initiate  enforcement
action  against the Company,  which could have a material  adverse effect on the
Company.


         Once cleared or approved,  medical devices are subject to pervasive and
continuing  regulation  by  the  FDA,  including,   but  not  limited  to,  good
manufacturing  practices ("GMP")  regulations  governing testing,  control,  and
documentation;  and reporting of adverse experiences with the use of the device.
Ongoing  compliance  with GMP and other  applicable  regulatory  requirements is
monitored through periodic inspections. FDA regulations require agency clearance
or  approval  for  certain  changes  if they do or could  affect  the safety and
effectiveness of the device,  including,  for example,  new indications for use,
labeling  changes or changes in design or  manufacturing  methods.  In addition,
both before and after  clearance  or  approval,  medical  devices are subject to
certain  export and import  requirements  under the FDCA.  Product  labeling and
promotional  activities  are  subject  to  scrutiny  by the FDA and,  in certain
instances,  by the Federal  Trade  Commission.  Products  may be promoted by the
Company  only for their  approved  use.  Failure to comply  with these and other
regulatory  requirements  can result,  among other  consequences,  in failure to
obtain premarket approvals, withdrawal of approvals, total or partial suspension
of product  distribution,  injunctions,  civil penalties,  recall or seizures of
products and criminal prosecution.


         The Company  believes that its Quality Control Panels are not regulated
by the FDA because they are not intended for  diagnostic  purposes.  The Company
believes  that its  Diagnostic  Components,  which  are  components  of in vitro
diagnostic products, may be subject to certain regulatory requirements under the
FDCA and other laws administered by the FDA, but do not require that the Company
obtain a premarket  approval or clearance.  There can be no assurance,  however,
that  the  FDA  would  agree  or  that  the  FDA  will  not  adopt  a  different
interpretation  of the FDCA or other  laws it  administers,  which  could have a
material adverse effect on the Company.


         Laws and  regulations  affecting some of the Company's  products are in
effect in many of the  countries  in which the  Company  markets  or  intends to
market its products.  These  requirements  vary from country to country.  Member
states of the European  Economic  Area (which is composed of the European  Union
members and the European Free Trade  Association  members) are in the process of
adopting various product and services  "Directives" to address essential health,
safety, and environmental  requirements associated with the subject products and
services.  The "Directives"  cover both quality system  requirements (ISO Series
9000  Standards) and product and marketing  related  requirements.  In addition,
some  jurisdictions  have  requirements  related to marketing  of the  Company's
products.  There can be no assurance that the Company will be able to obtain any
regulatory  approvals  required to market its products on a timely basis,  or at
all. Delays in receipt of, or failure to receive such approvals,  or the failure
to comply with  regulatory  requirements in these countries or states could lead
to  compliance 

                                      -12-






action,  which could have a material  adverse effect on the Company's  business,
financial condition, or results of operations.


         The Company's  service-related  business  (clinical trials,  infectious
disease testing,  and contract  research) is subject to other national and local
requirements.  The  Company's  facilities  are  subject to  review,  inspection,
licensure or accreditation by some states,  national professional  organizations
(College of  American  Pathologists),  and other  national  regulatory  agencies
(Health  Care  Financing  Administration).  Studies  to  evaluate  the safety or
effectiveness  of FDA regulated  products  (primarily  human and animal drugs or
biologics) must also be conducted in conformance with relevant FDA requirements,
including Good Laboratory Practice ("GLP") regulations, investigational new drug
or device  regulations,  Institutional  Review  Board  ("IRB")  regulations  and
informed consent regulations.


         The  Clinical  Laboratory   Improvement  Amendments  of  1988  ("CLIA")
prohibits  laboratories  from  performing  in vitro  tests  for the  purpose  of
providing information for the diagnosis,  prevention or treatment of any disease
or impairment  of, or the assessment of, the health of human beings unless there
is in effect for such laboratories a certificate  issued by the U.S.  Department
of Health and Human Services  ("HHS")  applicable to the category of examination
or procedure performed.


         The  Company  currently  holds  permits  issued by HHS (CLIA  license),
Centers for Disease Control and Prevention (Importation of Etiological Agents or
Vectors of Human Diseases),  the U.S. Department of Agriculture (Importation and
Transportation  of Controlled  Materials and Organisms and Vectors) and the U.S.
Nuclear  Regulatory  Commission (in vitro testing with byproduct  material under
general license, covering the use of certain radioimmunoassay test methods).


         The Company is also subject to  government  regulation  under the Clean
Water Act, the Toxic  Substances  Control Act,  the  Resource  Conservation  and
Recovery  Act,  the  Atomic  Energy  Act,  and other  national,  state and local
restrictions  relating to the use and disposal of biohazardous,  radioactive and
other hazardous  substances and wastes.  The Company is an exempt small quantity
generator  of hazardous  waste and has a U.S.  Environmental  Protection  Agency
identification  number.  The Company is also  registered  with the U.S.  Nuclear
Regulatory Commission for use of certain radioactive  materials.  The Company is
also subject to various state regulatory  requirements governing the handling of
and disposal of biohazardous,  radioactive and hazardous wastes. The Company has
never been a party to any environmental proceeding.


         Internationally,   some  of  the  Company's  products  are  subject  to
additional  regulatory  requirements,  which vary  significantly from country to
country.  Each country in which the Company's  products and services are offered
must  be  evaluated   independently   to  determine  the  country's   particular
requirements.  In foreign  countries,  the Company's  distributors are generally
responsible for obtaining any required government consents.


EMPLOYEES


         As of December 31, 1996 the Company  employed 191 persons,  all of whom
were located in the United States. Eighty of these persons were employed in West
Bridgewater,  Massachusetts,  62 in  New  Britain,  Connecticut,  and  49 at the
Rockville,  Maryland  site.  None of the  Company's  employees  is  covered by a
collective bargaining agreement. The Company believes that it has a satisfactory
relationship with its employees.



                                      -13-






EXECUTIVE OFFICERS OF THE REGISTRANT


         The  following  table sets forth the names,  ages and  positions of the
    current executive officers of the Registrant as of December 31, 1996:

<TABLE>
<CAPTION>

      NAME                                     AGE                   POSITION
      ----                                     ---                   --------
<S>                                            <C>                   <C>
    Richard T. Schumacher                      46                    President; Chief Executive Officer and
                                                                     Chairman of the Board

    Kevin W. Quinlan                           46                    Senior Vice President, Finance; Chief
                                                                     Financial Officer; Treasurer and Director

    Patricia E. Garrett, Ph.D.                 53                    Senior Vice President, Regulatory Affairs
                                                                     & Strategic Programs

    Mark M. Manak, Ph.D.                       45                    Senior Vice President, Research and
                                                                     Development

    Richard C. Tilton, Ph.D.                   60                    Senior Vice President, Specialty
                                                                     Laboratory Services

    Barry M. Warren                            49                    Senior Vice President, Sales & Marketing

    Ronald V. DiPaolo, Ph.D.                   52                    Vice President of Operations

</TABLE>




         Mr.  Schumacher,  the founder of the  Company,  has been the  President
since 1986, and Chief Executive  Officer and Chairman since 1992. Mr. Schumacher
served as the Director of  Infectious  Disease  Services  for  Clinical  Science
Laboratory, a New England-based medical reference laboratory, from 1986 to 1988.
From 1972 to 1985, Mr. Schumacher was employed by the Center for Blood Research,
a nonprofit medical research  institute  associated with Harvard Medical School.
Mr. Schumacher received a B.S. in zoology from the University of New Hampshire.


         Mr. Quinlan, a Director of the Company since 1986, has been Senior Vice
President,  Finance,  Treasurer, and Chief Financial Officer since January 1993.
From 1990 to December 1992, he was the Chief Financial Officer of ParcTec,  Inc.
a New  York-based  leasing  company.  Mr.  Quinlan  served as Vice President and
Assistant  Treasurer of American  Finance Group,  Inc. from 1981 to 1989 and was
employed  by Coopers & Lybrand  from 1975 to 1980.  Mr.  Quinlan is a  certified
public accountant and received a M.S. in accounting from Northeastern University
and a B.S. in economics from the University of New Hampshire.


         Dr.  Garrett  has been  Senior  Vice  President,  Regulatory  Affairs &
Strategic  Programs  since 1988.  From 1980 to 1987,  Dr.  Garrett served as the
Technical  Director  of  the  Chemistry  Laboratory,  Department  of  Laboratory
Medicine at the Lahey Clinic Medical  Center.  Dr. Garrett earned her Ph.D. from
the University of Colorado and was a postdoctoral  research associate at Harvard
University,  Oregon State University,  Massachusetts Institute of Technology and
the University of British Columbia.


         Dr. Manak has served as Senior Vice President, Research and Development
since 1992. From 1980 to 1992, he served as Senior Research Scientist, Molecular
Biology,  of Biotech  Research  Laboratories.  Dr. Manak  received his Ph.D.  in
biochemistry  from the  University of  Connecticut  and  completed  postdoctoral
research work in biochemistry/virology at Johns Hopkins University.


         Dr. Tilton has served as Senior Vice  President,  Specialty  Laboratory
Services  since the Company's  acquisition  of BBI Clinical  Laboratories,  Inc.
("BBICL")  in 1993 and was one of the  founders  of  BBICL,  where he  served as
President from 1989 to 1993. Dr. Tilton has 25 years of experience in university
hospital  clinical  microbiology  laboratories and is board certified in medical
and public health  microbiology.  Dr. Tilton  received his Ph.D. in microbiology
from the University of Massachusetts.


         Mr. Warren has served as Senior Vice President, Sales & Marketing since
1993.  From 1985 to 1993,  Mr. Warren  served as Group  Director of Marketing of
Organon  Teknika,  a manufacturer  of

                                      -14-






infectious  disease  reagents.  Mr. Warren received an M.A. in political science
from Loyola University of Chicago and a B.A. from Loyola University.


         Dr. DiPaolo has been Vice President of Operations  since 1993. Prior to
joining the Company, Dr. DiPaolo served as Vice President and General Manager of
the Biomedical Products Division of Collaborative  Research,  a medical research
products  company from 1986 to 1989. From 1975 to 1986 he was employed by DuPont
New England Nuclear, an in vitro test kit manufacturer. Dr. DiPaolo received his
Ph.D. in  biochemistry  from  Massachusetts  Institute of  Technology  and later
completed  postdoctoral  research  at the  Eunice  Shriver  Center  in  Waltham,
Massachusetts.


         Officers  are  elected by, and serve at the  pleasure  of, the Board of
Directors.


ITEM 2.  PROPERTIES.


         The  Company's  corporate  offices  and  manufacturing  facilities  are
located  in a two  story,  22,500  square  foot  building  in West  Bridgewater,
Massachusetts.  The Company  owns and  operates  this  building.  The Company is
currently  expanding the  manufacturing  capacity by approximately  7,500 square
feet,  and  believes  that  following  these  renovations,  its facility in West
Bridgewater will be sufficient to meet its foreseeable needs.


         The Company leases its laboratory facilities in Rockville, Maryland and
New Britain, Connecticut. The Rockville facility contains 21,000 square feet and
is occupied under a five-year  lease that is due to expire on June 30, 1997. The
Company is currently  considering  extending the lease for an additional period,
as well as relocating its laboratory. The New Britain facility has 15,000 square
feet,  most of which is dedicated  to  laboratory  space.  The lease is for five
years and is due to expire on July 30, 2000;  the Company has an option to renew
for an additional five years.


ITEM 3.  LEGAL PROCEEDINGS.


         There are no material legal proceedings  pending against the Company or
its subsidiaries.


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.


         No matter was submitted  during the fourth  quarter of fiscal 1996 to a
vote of security holders of the Company.


                                     PART II


ITEM 5.  MARKET FOR REGISTRANT'S COMMON STOCK AND
         RELATED STOCKHOLDER MATTERS.


         The Company  completed an initial public  offering of its Common Stock,
$.01 par value,  (the "Common  Stock") on October 31, 1996.  The Common Stock is
listed on the NASDAQ  National  Market under the symbol  "BBII".  For the period
from October 31, 1996 through December 31, 1996, the high and low closing prices
of the Company's Common Stock on NASDAQ were 8 1/2 and 6 3/4, respectively.


         As of December 31, 1996,  there were 20,000,000  shares of Common Stock
authorized of which 4,378,157 shares of Common Stock were  outstanding,  held of
record by approximately 166 stockholders.


         The Company has not declared or paid any dividends on its Common Stock.
Payment of dividends  on Common Stock is  restricted  under the  Company's  loan
agreement with its bank.



                                      -15-






ITEM 6.  SELECTED FINANCIAL DATA

         The  statement  of income data for each of the fiscal years in the four
year period ended  December 31, 1996,  and the balance sheet data as of December
31, 1993, 1994, 1995 and 1996, have been derived from the consolidated financial
statements of the Company  which have been audited by Coopers & Lybrand  L.L.P.,
independent  accountants.  The  statement  of income data of the Company for the
fiscal year ended  December  31, 1992 and the balance  sheet data as of December
31, 1992 have been derived from consolidated financial statements of the Company
which  have been  audited by other  independent  public  accountants.  This data
should be read in conjunction with "Item 8"--"Consolidated  Financial Statements
and Supplementary Data", and "Item 7"--"Management's  Discussion and Analysis of
Financial Condition and Results of Operations" appearing elsewhere herein.


<TABLE>
<CAPTION>



                                                                YEAR ENDED DECEMBER 31,
                                                   --------------------------------------------------
                                                    1996       1995      1994       1993      1992
                                                                                   (2)(3)      (1)
                                                   --------   --------  --------   --------  --------
                                                         (IN THOUSANDS, EXCEPT PER SHARE DATA)
CONSOLIDATED STATEMENT OF INCOME DATA:
<S>                                                <C>         <C>       <C>        <C>       <C>   

REVENUE:
    Product sales                                  $ 8,470     $6,622    $5,982     $3,942    $2,955
    Services
                                                     7,039      5,649     4,741      5,215     1,680
                                                   --------   --------  --------   --------  --------
         Total revenue                              15,509     12,271    10,723      9,157     4,635
                                                   --------   --------  --------   --------  --------

COSTS AND EXPENSES:
    Cost of product sales                            4,252      3,564     3,194      2,088     1,638
    Cost of services                                 4,856      4,168     3,416      3,965     1,443
    Research and development                           797        375       469        279       222
    Selling and marketing                            2,188      1,340     1,192        894       353
    General and administrative                       2,401      2,316     2,047      1,619       745
                                                   --------   --------  --------   --------  -------
         Total operating costs and expenses         14,494     11,763    10,318      8,845     4,401
                                                   --------   --------  --------   --------  --------
         Income from operations                      1,015        508       405        312       234
Interest expense, net                                  213        336       244        179       113
                                                   --------   --------  --------   --------  --------
    Income before income taxes and                     802        172       161        133       121
      extraordinary item
Provision for income taxes                            (321)       (69)      (64)       (41)      (45)
                                                   --------   --------  --------   --------  --------
    Income before extraordinary item                   481        103        97         92        76
Extraordinary item-gain on elimination of debt,
net of income taxes                                     --         --        --         50        --
                                                   --------   --------  --------   --------  --------
    Net income                                     $   481     $  103   $           $  142   $    76
                                                                             97
                                                   --------   --------  --------   --------  --------
Net income per share(4)                            $  0.14     $ 0.04   $  0.04     $ 0.06    $ 0.04
Weighted average common and common equivalent
     shares outstanding(4)                           3,340      3,151     2,587      2,438     2,160

</TABLE>


<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                --------------------------------------------------
                                                 1996       1995      1994       1993      1992
                                                --------   --------  --------   --------  --------
                                                         (IN THOUSANDS, EXCEPT PER SHARE DATA)
CONSOLIDATED BALANCE SHEET DATA:

<S>                                           <C>         <C>       <C>       <C>        <C>
Working capital(5)                              $12,836     $4,829    $4,686    $ 3,612    $2,457
Total assets                                     19,798      9,928     8,076      6,870     4,828
Long term debt, less current                         41      4,216     3,180      2,381     1,760
maturities(5)
Total stockholders' equity                       16,290      3,187     3,041      2,762     1,837
Dividends                                            --         --        --         --        --
</TABLE>



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

(1) Effective July 1, 1992, the Company acquired through its BTRL subsidiary the
    net assets of a division of Cambridge Biotech Corporation for $762,000 which
    increased 1992 revenues by $1,450,000.
(2) On  June  30,  1993,  the  Company  exercised  its  option  to  pre-pay  the
    acquisition  note  in  connection  with  the  1992  purchase  of  BTRL  at a
    substantial  discount  from the balance due,  resulting in an  extraordinary
    gain of $50,000 net taxes of $33,000.  The 1993 net income per share  before
    such extraordinary gain was $0.04.
(3) Effective  January 1, 1993,  the  Company  acquired  the net assets of North
    American  Laboratory  Group Ltd.,  Inc. for $425,000,  which  increased 1993
    revenues by $2,019,000.
(4) The effect of the common stock  equivalents on net income per share has been
    excluded from the calculation for years ended December 31, 1992 through 1994
    as its inclusion was antidilutive.
(5) The Company's demand line of credit with  outstanding  amounts of $1,091,000
    and  $1,895,000  as of December  31, 1992 and 1993,  respectively,  has been
    presented as part of long-term  debt (and excluded from current  liabilities
    in calculating  working capital) for 1992 and 1993 to be consistent with its
    reclassification  to  long-term  debt  in  1994,  1995  and  1996  due  to a
    modification of its maturity date.


                                      -16-


ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
         CONDITION AND RESULTS OF OPERATIONS.

OVERVIEW

         The Company  generates  revenue from products and services  provided to
the in vitro diagnostic  infectious disease industry.  Products consist of three
groups:  Quality  Control  Panels,   Accurun(TM)  Run  Controls  and  Diagnostic
Components.  Services consist of Specialty Clinical Laboratory Testing, Contract
Research,  Clinical Trials and Drug Screening. In the three full years since the
Company's acquisition of Biotech Research Laboratories ("BTRL") and BBI Clinical
Laboratories, Inc. ("BBICL"), the Company has experienced a shift in revenue mix
towards  increased  product sales,  as product  revenue as a percentage of total
revenue  increased  from  43.1% in 1993 to 54.6% in 1996,  with a  corresponding
decrease in the percentage of total revenue provided by services.

         The Company's gross profit margin increased from 33.9% in 1993 to 41.3%
in 1996  principally  as a result of the  increased  percentage of higher margin
product  revenues.  Within  products,  the Company's  Quality  Control  Products
(Accurun(TM)  Run Controls and Quality  Control Panels) have higher margins than
the Company's Diagnostic  Components.  Within services,  Contract Research gross
margins  are lower than  other  services.  However,  such  contracts  enable the
Company  to  maintain  certain  scientific  staff and  capability  that it might
otherwise not be able to afford.  The Company intends to continue to concentrate
on the growth in sales of its Quality Control Products.

         Historically,  the Company's results of operations have been subject to
quarterly  fluctuations  due  to  a  variety  of  factors,   including  customer
purchasing patterns, primarily driven by end-of-year expenditures,  and seasonal
demand  during the summer months for certain  laboratory  testing  services.  In
particular,  the Company's sales of its Quality Control  Products and Diagnostic
Components  typically  have been highest in the fourth quarter and lowest in the
first quarter of each fiscal year, whereas Specialty Clinical Laboratory Testing
has generally reached a seasonal peak during the third quarter,  coinciding with
the peak incidence of Lyme Disease.  Research  Contracts are generally for large
dollar  amounts  spread  over a one or two year  period,  and  upon  completion,
frequently  do not have  renewal  phases.  As a  result  they  can  cause  large
fluctuations  in revenue and net  income.  In  addition  to staff  dedicated  to
internal research and development, certain of the Company's technical staff work
on both  Contract  Research for  customers  and Company  sponsored  research and
development.  The allocation of certain technical staff to such projects depends
on the  volume of  Contract  Research.  As a result,  research  and  development
expenditures fluctuate due to increases or decreases in Contract Research.

         To develop new Quality Control  Products and support  increased  sales,
the Company hired additional  research and development  staff in the second half
of 1995 and sales and marketing  staff in 1996. The Company  intends to continue
to add  staff  to  these  departments.  This  should  cause  both  research  and
development  and selling and  marketing  expenses to increase as a percentage of
revenue in 1997,  compared to 1996. General and administrative  expenses are not
expected  to increase  at the same rate,  as the  Company  has already  incurred
significant infrastructure expenses.

         The Company does not have any foreign operations.  However, the Company
does have significant export sales to agents under distribution  agreements,  as
well as directly to test kit  manufacturers.  All sales are  denominated in U.S.
dollars. Export sales for the years ended December 31, 1994, 1995, and 1996 were
$2.3 million, $3.1 million, and $3.9 million,  respectively. The Company expects
that  export  sales will  continue  to be a  significant  source of revenue  and
operating income.



                                      -17-


RESULTS OF OPERATIONS

         The following table sets forth for the periods indicated the percentage
of total  revenue  represented  by  certain  items  reflected  in the  Company's
consolidated statements of operations:

                                                YEAR ENDED DECEMBER 31
                                           1996          1995         1994
                                           ----          ----         ----
Revenue:
    Products                               54.6%         54.0%        55.8%
    Services                               45.4          46.0         44.2
                                           ----          ----         ----
           Total revenue                  100.0         100.0        100.0
Gross profit                               41.3          37.0         38.4
Operating expenses:
    Research and development                5.1           3.1          4.4
    Selling and marketing                  14.1          10.9         11.1
    General and administrative             15.5          18.9         19.1
                                           ----          ----         ----
           Total operating expenses        34.7          32.9         34.6
                                           ----          ----         ----
    Income from operations                  6.5           4.1          3.8
Interest expense                            1.4           2.7          2.3
                                            ---           ---          ---
    Income before income taxes              5.1           1.4          1.5
    Net income                              3.1           0.8          0.9
                                            ===           ===          ===
Product gross profit                       49.8%         46.2%        46.6%
Services gross profit                      31.0%         26.2%        28.0%





YEARS ENDED DECEMBER 31, 1996 AND 1995

         Total revenue  increased  26.4%, or $3,239,000,  to $15,509,000 in 1996
from  $12,271,000  in 1995.  The  increase in revenues was the result of a 27.9%
increase in product revenues of $1,848,000 to $8,470,000 from $6,622,000,  and a
24.6% increase in service  revenues of $1,390,000 to $7,039,000  from $5,649,000
in 1995. The increase in product revenue was  attributable to an increase in the
volume of sales of Quality Control Products,  particularly Accurun. The increase
in service  revenue was  primarily  the result of increased  volume of specialty
clinical  laboratory  testing and a favorable  mix shift  towards  higher priced
molecular  testing,  and the  impact  of two new  research  contracts.  This was
partially offset by lower volume of clinical trial services.

         Gross profit  increased  41.0%,  or $1,862,000,  to $6,400,599 for 1996
from $4,539,000 in 1995.  Products gross profit  increased 38.0%, or $1,160,000,
to $4,217,000 in 1996 from $3,057,000 in 1995 as the products sales increase was
positively  impacted by an increase in products gross profit margin (to 49.8% in
1996 from 46.2%). The products gross margin increase was a result of a favorable
mix shift towards  Accurun sales.  Services  gross profit  increased  47.3%,  or
$701,000,  to $2,183,000 in 1996 from  $1,481,000 in 1995 as the testing  volume
increased  at a faster rate than  laboratory  headcount  increased,  and thereby
caused the services  gross profit margin to increase to 31.0% in 1996 from 26.2%
in 1995.

         Research and development expenditures increased 112.1%, or $421,000, to
$797,000 in 1996 from $376,000 in 1995.  The increase  resulted  from  increased
costs of  personnel  hired in the second half of 1995 to step-up the rate of new
product introductions, and increased research project expenditures.  Development
projects  included  Accurun(TM),   molecular  and  immunological  Run  Controls,
specialized  molecular  assays,  and expenditures  related to the Company's drug
discovery program.

         Selling  and  marketing  expenses  increased  63.3%,  or  $848,000,  to
$2,188,000  in 1996 from  $1,340,000  in 1995.  The  increase  was  attributable
primarily  to  additional  sales and  marketing  staff and  overhead;  increased
advertising,  promotion,  trade show and travel expenses due to the commencement
of the Company's  "Total Quality  System" (TQS)  marketing  campaign;  and costs
associated with participation by the Company's  Specialty Clinical Laboratory in
the Roche  Diagnostics'  Amplicor(  Access  program in  connection  with Roche's
launch  of  their  new FDA  approved  HIV PCR test  kit.  The 


                                      -18-





Amplicor(  kit is  primarily  used to  monitor  the HIV viral  load  (level)  in
patients prior to and during drug therapy.

         General  and  administrative  costs  increased  3.7%,  or  $85,000,  to
$2,401,000  in 1996 from  $2,316,000  in 1995.  This  increase was  attributable
primarily to additional staffing in support of revenue growth and higher reserve
provisions for doubtful accounts associated with the increased volume of revenue
related to testing in  situations  in which  payment to the  Company  depends on
collecting from the patient rather than a healthcare institution.

         Net interest expense decreased 36.6%, or $123,000,  to $213,000 in 1996
from  $336,000  in 1995,  as the  proceeds  from the  Company's  initial  public
offering  were  used to pay down  almost  all debt in  early  November,  and the
remaining amount invested in short term, investment grade securities.

YEARS ENDED DECEMBER 31, 1995 AND 1994

         Total revenue  increased  14.4%, or $1,548,000,  to $12,271,000 in 1995
from  $10,723,000  in 1994.  The  increase in revenues was the result of a 10.7%
increase in product  revenues of $640,000 to $6,622,000 from  $5,981,000,  and a
19.1% increase in service  revenues of $908,000 to $5,649,000 from $4,741,000 in
1995 compared to 1994. The increase in product  revenue was  attributable  to an
increase  in prices at the  beginning  of 1995 and an  increase in the volume of
sales of  Quality  Control  Products  and  Basematrix  (part  of the  Diagnostic
Components  group),  which  increase  was  partially  offset by the  absence  of
revenues  in 1995  from two OEM  Quality  Control  Panel  contracts  which  were
completed in 1994.  The Company also  reduced  emphasis on certain  lower margin
Diagnostic  Components  as it focused  more  effort on sales of its  proprietary
Basematrix  product,  which carries a higher  margin.  During 1995,  the Company
reorganized  its sales and  marketing  department  and believes that this had an
adverse effect on sales growth for the period.  The increase in service  revenue
was primarily the result of increased specialty clinical laboratory testing, two
new research  contracts and increased  clinical trial services,  particularly in
the area of HIV.

         Gross profit increased 10.4%, or $426,000,  to $4,539,000 for 1995 from
$4,113,000  in 1994.  Products  gross profit  increased  9.7%,  or $270,000,  to
$3,057,000 in 1995 from  $2,787,000 in 1994 as the products  sales  increase was
offset by a small  decrease in products  gross  profit  margin (to 46.2% in 1995
from 46.6%). The products gross margin decrease was a result of a small increase
in material handling personnel costs.  Services gross profit increased 11.8%, or
$156,000,  to $1,481,000 in 1995 from  $1,326,000 in 1994 as the sales  increase
was offset by a decrease in services  gross profit  margin to 26.2% in 1995 from
28.0% in 1994. Services gross margin declined primarily as a result of increased
personnel costs in the specialty clinical laboratory and an increase in contract
research activities, which carry a lower margin.

         Research and development  expenditures  decreased 20.0%, or $94,000, to
$376,000 in 1995 from  $469,000 in 1994.  The  decrease  resulted  from  certain
technical staff being utilized for Company sponsored research and development in
1994 and Contract Research in 1995.  Development projects included  Accurun(TM),
molecular and immunological Run Controls,  specialized molecular assays, and the
development  of a second  generation  Lyme  Disease  western  blot  test kit for
internal use by the Company's specialty testing laboratory.

         Selling  and  marketing  expenses  increased  12.4%,  or  $148,000,  to
$1,340,000  in  1995  from  $1,192,000  in  1994.  The  increase  was  primarily
attributable  to additional  sales and marketing  staff and overhead,  partially
offset by lower trade show and travel expenses as the Company  realized  greater
benefits from its distributor network.

         General and  administrative  costs  increased  13.1%,  or $269,000,  to
$2,316,000  in 1995  from  $2,047,000  in  1994.  This  increase  was  primarily
attributable  to  additional  staffing  in support of revenue  growth and higher
reserve provisions for doubtful accounts associated with the increased volume of
revenue related to testing in situations where payment to the Company depends on
collecting  from  the  patient  rather  than  a  healthcare  institution.  These
increases were partially  offset by lower  professional 


                                      -19-





fees.  Also  included in general and  administrative  expense was  approximately
$60,000 of nonrecurring  costs associated with the move of the specialty testing
laboratory into a larger, custom-designed facility.

         Interest expense increased 37.8%, or $92,000,  to $336,000 in 1995 from
$244,000 in 1994,  as the Company  funded its working  capital  needs  primarily
through increased borrowings.

LIQUIDITY AND CAPITAL RESOURCES

         On October 31, 1996 the Company's Common Stock commenced trading on the
NASDAQ as a result of its initial  public  offering of its common stock ("IPO"),
selling  1,600,000  shares at $8.50  per  share.  Net  proceeds  received  after
underwriting  discounts,   commissions  and  offering  costs  was  approximately
$11,633,000.  On November 5, 1996, the Company repaid  substantially  all of its
outstanding bank debt which totaled approximately $3.9 million.

         The Company has financed its  operations to date through cash flow from
operations,  borrowings  from banks and sales of equity.  With the  repayment of
debt from the IPO proceeds,  the Company expects its cash flow and cash position
to meet existing  operational  needs,  although  amounts repaid on its Revolving
Line of Credit  Agreement (the  "Revolver") will be available for reborrowing as
needed.

         Net cash provided by operations  for 1996 was $1,460,000 as compared to
cash used in  operations  of $29,000  in 1995.  This  increase  in cash flow was
primarily  attributable to an increase in net income,  improved  working capital
position, and an increase in deferred revenue from a payment of $306,000 under a
research  contract  for  future  clinical  trial  services.  Cash  flow  used in
operations  in 1994 was  $554,000 as working  capital  needs due to sales growth
exceeded cash generated from net income adjusted by non cash expenses.

         Cash used in investing  activities for 1996,  1995 and 1994 amounted to
$1,412,000,  $1,320,000,  and $405,000,  respectively.  In addition to equipment
purchases  in 1996,  the Company  purchased  common  stock in BioSeq,  Inc.  for
$732,500 which represents an ownership  position of approximately 14% in BioSeq,
Inc. The  increased  use of cash in 1995  compared to 1994 was the result of the
purchase of the Company's West Bridgewater facility.

         During 1996, net cash generated from common stock issued, including the
IPO, approximated $12,600,000. This was used to pay down net debt of $4,577,000.
Net cash  provided by borrowings  for 1995 and 1994  amounted to $1,240,000  and
$846,000,  and net  proceeds  from the sale of Common Stock for the same periods
amounted to $176,000 and $170,000,  respectively. The proceeds of such debt were
used for  working  capital,  to acquire  the West  Bridgewater  property  and to
purchase capital equipment.

         In 1996,  1995 and 1994  capital  expenditures  amounted  to  $669,000,
$1,316,000,  and  $405,000,  respectively.  In 1995,  $806,000 of the  Company's
capital expenditures related to the purchase of the West Bridgewater facility.

         On April 26, 1996 the Company entered into a new five year distribution
agreement with Kyowa Medex,  Co., Ltd., a foreign  distributor,  extending a six
year old relationship.  Simultaneously, Kyowa Medex, Co., Ltd. purchased 117,647
shares of the Company's Common Stock at a price of $8.50 per share.

         The Company anticipates capital  expenditures to increase over the near
term as it expects to use  approximately  $1.0  million from the IPO proceeds to
expand its  manufacturing  capacity in West  Bridgewater  during 1997,  of which
approximately  $500,000 will be spent on building  expansion  and  approximately
$500,000  will be  spent  on  equipment.  The  Company  expects  to make a final
investment  in BioSeq in 1997 of  $750,000  which will  increase  its  ownership
position to 19.9%.  This final  payment is mandated  if BioSeq  attains  certain
technical  milestones by July 31, 1997, and at the Company's  option by December
31, 1997 if such milestones are not achieved. The Company believes that existing
cash balances,  the borrowing  capacity  available under the Revolver,  and cash
generated  from  operations are  sufficient to fund  operations and  anticipated
capital  expenditures for the foreseeable future.  Except for purchase orders in
connection with the manufacturing expansion, and the BioSeq investment described
above, there were no material financial  commitments for capital expenditures as
of December 31, 1996.



                                      -20-




         In March 1997,  the Company  entered into an Asset  Purchase  Agreement
with Source Scientific,  Inc. to acquire substantially all of their assets. Also
in March,  the Company entered into a new line of credit agreement with its bank
replacing  the  Revolver.  See Note 12 to the  Company's  Notes to  Consolidated
Financial Statements in Item 8 hereunder.

RECENT ACCOUNTING PRONOUNCEMENTS

         The  Financial  Accounting  Standards  Board issued  Statement  No. 128
("SFAS 128"), "Earnings per Share", which requires the presentation of basic and
diluted earning per share (EPS).  Basic EPS excludes dilution and is computed by
dividing income available to common stockholders by the weighted-average  number
of common shares outstanding for the period.  Diluted EPS reflects the potential
dilution that could occur if securities or other contracts to issue common stock
were  exercised  or  converted  into common stock or resulted in the issuance of
common stock that then shared in the earnings of the entity.  Basic EPS replaces
primary EPS.  Diluted EPS is computed  similarly to fully  diluted EPS under the
existing rules. The Company will adopt SFAS 128 as of December 15, 1997 and upon
adoption, will restate all prior period EPS data presented.  The Company has not
yet quantified what the impact of SFAS 128 will be on EPS.


FORWARD - LOOKING INFORMATION


         The  Annual  Report on Form 10-K  contains  forward-looking  statements
concerning the Company's  financial  performance  and business  operations.  The
Company wishes to caution readers of this Annual Report on Form 10-K that actual
results  might differ  materially  from those  projected in the  forward-looking
statements contained herein.


         Factors  which might cause  actual  results to differ  materially  from
those projected in the forward-looking  statements  contained herein include the
following:  inability  of the Company to develop the end user market for quality
control  products;  inability of the Company to integrate the business of Source
Scientific,  Inc. into the Company's business;  inability of the Company to grow
the sales of Source  Scientific,  Inc. to the extent  anticipated;  inability of
Source  Scientific,  Inc.  to repay the  $650,000  loan made by the  Company;  a
material  adverse  change in the business,  financial  condition or prospects of
BioSeq, Inc., an early stage biotechnology company in which the Company has made
a significant investment;  inability of the Company to obtain an adequate supply
of the unique and rare  specimens of plasma and serum  necessary  for certain of
its products;  significant reductions in purchases by any of the Company's major
customers; and the potential insufficiency of Company resources, including human
resources, plant and equipment and management systems, to accommodate any future
growth.  Certain of these and other factors which might cause actual  results to
differ  materially  from  those  projected  are more  fully set forth  under the
caption "Risk Factors" in the Company's  Registration Statement on Form S-1 (SEC
File No. 333-10759).




                                      -21-







ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA



                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEETS


<TABLE>
<CAPTION>
                                                                                    December 31,
                                                                           -------------------------------
                                                                               1996             1995
                                                                           --------------   --------------

                               ASSETS
<S>                                                                         <C>              <C>         
CURRENT ASSETS:
    Cash and cash equivalents                                               $   8,082,642    $      11,463
    Accounts receivable, less allowances of $352,058 in 1996 and
       $142,372 in 1995                                                         3,415,994        3,075,870
    Inventories (Note 2)                                                        4,180,334        3,676,851
    Prepaid expense and other                                                     239,950          254,199
    Deferred income taxes (Note 7)                                                283,200          110,766
                                                                           --------------   --------------
                Total current assets                                           16,202,120        7,129,149
                                                                           --------------   --------------

Property and equipment, net (Note 3)                                            2,699,158        2,614,982

OTHER ASSETS:
    Long term investment (Note 4)                                                 732,500              -
    Goodwill and other intangibles, net (Note 1)                                   95,302          100,820
    Notes receivable and other                                                     69,234           83,422
                                                                           --------------   --------------
                                                                                  897,036          184,242
                                                                           --------------   --------------
              TOTAL ASSETS                                                  $  19,798,314    $   9,928,373
                                                                           ==============   ==============


                LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES:
    Current maturities of long term debt (Note 6)                           $      12,820    $     436,509
    Accounts payable                                                              991,839          745,216
    Accrued compensation                                                          840,666          395,755
    Accrued income taxes                                                          427,140           36,582
    Other accrued expenses                                                        264,262          303,820
    Deferred revenue                                                              829,477          523,401
                                                                           --------------   --------------
                Total current liabilities                                       3,366,204        2,441,283
                                                                           --------------   --------------

LONG-TERM LIABILITIES:
    Long-term debt, less current maturities (Note 6)                               40,948        4,215,501
    Deferred income taxes (Note 7)                                                101,580           84,641

COMMITMENTS AND CONTINGENCIES (Note 8)

STOCKHOLDERS' EQUITY (Note 10):
    Common stock, $.01 par value; authorized 20,000,000 shares in
       1996 and 1995; issued and outstanding 4,378,157 in 1996 and issued
       2,640,417 in 1995                                                           43,782           26,404
    Additional paid-in capital                                                 15,258,656        2,798,620
    Retained earnings                                                             987,144          505,924
                                                                           --------------   --------------
                                                                               16,289,582        3,330,948
    Less treasury stock, at cost-80,000 shares in 1995 and none in 1996                -          (144,000)

                                                                           --------------   --------------
                Total stockholders' equity                                     16,289,582        3,186,948
                                                                           --------------   --------------
             TOTAL LIABILITIES & STOCKHOLDERS' EQUITY                       $  19,798,314    $   9,928,373
                                                                           ==============   ==============

The accompanying notes are an integral part of these consolidated financial statements
</TABLE>



                                      -22-





                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

                        CONSOLIDATED STATEMENTS OF INCOME



<TABLE>
<CAPTION>
                                                            Years Ended December 31,
                                                  --------------------------------------------
                                                      1996            1995           1994
                                                  --------------  -------------  -------------
<S>                                                 <C>            <C>            <C>        
REVENUE:
     Product sales                                  $ 8,469,890    $ 6,621,631    $ 5,981,378
     Services                                         7,039,406      5,649,099      4,741,376
                                                  --------------  -------------  -------------
            Total revenue                            15,509,296     12,270,730     10,722,754

COSTS AND EXPENSES:
     Cost of product sales                            4,252,068      3,564,241      3,194,217
     Cost of services                                 4,856,630      4,167,625      3,415,777
     Research and development                           796,805        375,712        469,358
     Selling and marketing                            2,188,152      1,339,792      1,191,573
     General and administrative                       2,400,681      2,315,814      2,047,256
                                                  --------------  -------------  -------------
            Total operating costs and expenses       14,494,336     11,763,184     10,318,181

            Income from operations                    1,014,960        507,546        404,573

Interest expense, net                                   212,969        335,899        243,694
                                                  --------------  -------------  -------------

            Income before income taxes                  801,991        171,647        160,879

Provision for income taxes (Note 7)                    (320,771)       (68,657)       (64,351)
                                                  --------------  -------------  -------------

            Net income                             $    481,220    $   102,990    $    96,528
                                                  ==============  =============  =============

            Net income per share                   $       0.14    $      0.04    $      0.04
                                                  ==============  =============  =============
                                                                                  
Weighted average common and common
   equivalent shares outstanding                        3,340,236       3,151,477      2,587,137


The accompanying notes are an integral part of these consolidated financial statements

</TABLE>






                                      -23-





                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

           CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY




<TABLE>
<CAPTION>

                                                  Common Stock          
                                             ------------------------
                                                                        Additional                                   Total
                                                           $.01 Par       Paid-In       Retained      Treasury   Stockholders'
                                               Shares        Value        Capital       Earnings       Stock         Equity
                                             ------------  ----------  --------------  ------------  ----------- ---------------
<S>                                            <C>          <C>         <C>             <C>           <C>         <C>          
BALANCE, December 31, 1993                     2,525,028    $ 25,250    $  2,430,100    $  306,406         -      $   2,761,756
    Issuance of common stock                      29,862         299         139,403                                    139,702
    Stock options and warrants exercised          23,975         240          30,197                                     30,437
    Tax benefit of stock options exercised                                    12,800                                     12,800
    Net income                                                                              96,528                       96,528
                                             ------------  ----------  --------------  ------------  ----------- ---------------
BALANCE, December 31, 1994                     2,578,865      25,789       2,612,500       402,934         -          3,041,223
    Issuance of common stock                       8,535          85          58,160                                     58,245
    Stock options and warrants exercised          47,200         472         117,068                                    117,540
    Conversion of note payable                     5,817          58           9,542                                      9,600
    Treasury stock purchased - 80,000 shares                                                           (144,000)       (144,000)
    Tax benefit of stock options exercised                                     1,350                                      1,350
    Net income                                                                             102,990                      102,990
                                             ------------  ----------  --------------  ------------  ----------- ---------------
BALANCE, December 31, 1995                     2,640,417      26,404       2,798,620       505,924     (144,000)      3,186,948
    Issuance of common stock, net of
      issuance costs                           1,637,647      16,377      12,371,469                    144,000      12,531,846
    Stock options and warrants exercised          85,760         858          67,210                                     68,068
    Conversion of note payable                    14,333         143          21,357                                     21,500
    Net income                                                                             481,220                      481,220
                                             ------------  ----------  --------------  ------------  ----------- ---------------
BALANCE, December 31, 1996                     4,378,157    $ 43,782    $ 15,258,656     $ 987,144         -       $ 16,289,582
                                             ============  ==========  ==============  ============  =========== ===============



The accompanying notes are an integral part of these consolidated financial statements
</TABLE>


                                      -24-





                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

                      CONSOLIDATED STATEMENTS OF CASH FLOWS




<TABLE>
<CAPTION>
                                                                         Years Ended December 31,
                                                                 ------------------------------------------
                                                                     1996          1995           1994
                                                                 -------------  ------------  -------------
<S>                                                                    <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
    Net income                                                    $   481,220    $  102,990    $    96,528
    Adjustments to reconcile net income to net
       cash provided by (used in) operating activities:
    Depreciation and amortization                                     600,495       441,356        360,512
    Provision for doubtful accounts                                   247,080       181,084        102,099
    Deferred rent                                                     (87,152)      (45,792)         5,908
    Deferred income taxes                                            (155,495)      (61,765)       (42,798)
    Tax benefit of stock options exercised                                  -         1,350         12,800
Changes in operating assets and liabilities:
    Accounts receivable                                              (587,204)     (997,112)      (529,157)
    Note receivable and other assets                                   14,188       (61,343)        (3,720)
    Inventories                                                      (503,483)      (67,335)      (567,420)
    Prepaid expenses                                                   14,249       (98,082)        (3,500)
    Accounts payable                                                  246,623       (42,190)       (86,130)
    Accrued compensation and other expenses                           883,063        94,126        100,767
    Deferred revenue                                                  306,076       523,401              -
                                                                 -------------  ------------  -------------
        Net cash provided by (used in) operating activities         1,459,660       (29,312)      (554,111)
                                                                 -------------  ------------  -------------

CASH FLOWS FROM INVESTING ACTIVITIES:
    Payments for additions to property and equipment                 (669,154)   (1,316,217)      (404,639)
    Purchase of intangible assets                                      (9,999)       (4,000)             -
    Purchase of long term investment                                 (732,500)            -              -
                                                                 -------------  ------------  -------------
        Net cash used in investing activities                      (1,411,653)   (1,320,217)      (404,639)
                                                                 -------------  ------------  -------------

CASH FLOWS FROM FINANCING ACTIVITIES:
    Proceeds from long term debt                                      226,300     1,517,867      1,734,425
    Repayments of long-term debt                                   (4,803,042)     (277,789)      (887,989)
    Proceeds of common stock issued                                13,581,315       175,785        170,139
    Offering costs associated with common stock issued               (981,401)            -              -
    Purchase of treasury stock                                              -      (144,000)             -
                                                                 -------------  ------------  -------------
        Net cash provided by financing activities                   8,023,172     1,271,863      1,016,575
                                                                 -------------  ------------  -------------

INCREASE (DECREASE) IN CASH:                                        8,071,179       (77,666)        57,825
    Cash, beginning of year                                            11,463        89,129         31,304
                                                                 -------------  ------------  -------------
    Cash, end of year                                             $ 8,082,642   $    11,463   $     89,129
                                                                 =============  ============  =============

SUPPLEMENTAL DISCLOSURES OF NONCASH ACTIVITIES:
    Conversion of note payable to common stock                    $    21,500   $     9,600              -
    Noncash exercise of warrants to stockholder                   $   180,650             -              -

SUPPLEMENTAL INFORMATION:
    Income taxes paid                                             $    85,460   $   168,994   $     33,718
    Interest paid                                                 $   300,587   $   331,495   $    254,133




The accompanying notes are an integral part of these consolidated financial statements
</TABLE>


                                      -25-




                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



(1) BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

         Boston  Biomedica,   Inc.  ("BBI")  and  Subsidiaries  (together,   the
"Company") provide infectious disease diagnostic products, contract research and
specialty  infectious  disease  testing  services  to  the  in-vitro  diagnostic
industry,  government  agencies,  blood banks,  hospitals  and other health care
providers worldwide.  The Company is subject to risks common to companies in the
Biotechnology industry, including but not limited to, development by the Company
or  its  competitors  of  new  technological  innovations,   dependence  on  key
personnel,  protection  of  proprietary  technology,  and  compliance  with  FDA
government regulations.

         Significant  accounting  policies  followed in the preparation of these
consolidated financial statements are as follows:

  (I) PRINCIPLES OF CONSOLIDATION

         The consolidated  financial  statements include the accounts of BBI and
its wholly-owned subsidiaries,  Biotech Research Laboratories, Inc. ("BTRL") and
BBI Clinical Laboratories, Inc. ("BBICL"). All significant intercompany accounts
and  transactions  have been  eliminated in the  consolidation.  Certain amounts
included in the prior year's financial  statements may have been reclassified to
conform to the current presentation.

  (II) USE OF ESTIMATES

         To prepare  the  financial  statements  in  conformity  with  generally
accepted  accounting  principles,  management is required to make  estimates and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting  period.  In particular,  the Company  records  reserves for estimates
regarding  the  collectability  of  accounts  receivable  as  well  as  the  net
realizable  value  of its  inventory.  Actual  results  could  differ  from  the
estimates and assumptions used by management.

  (III) REVENUE RECOGNITION

         Product  revenues are recognized as sales upon shipment of the products
or, for specific orders at the request of the customer, on a bill and hold basis
after completion of manufacture.  All bill and hold  transactions meet specified
revenue  recognition  criteria which include normal billing,  credit and payment
terms,  and  transfer to the  customers  of all risks and rewards of  ownership.
Accounts  receivable  as of  December  31, 1996 and 1995  include  bill and hold
receivables of $23,000 and $179,000, respectively.

         The Company  periodically enters into barter  transactions  whereby the
Company exchanges inventory for testing services.  Revenue on these transactions
are recognized when both the products have been shipped and the testing services
have been  completed and are recorded at the estimated  fair market value of the
inventory based upon standard  Company prices.  The revenue  recognized on these
transactions  for the years ended December 31, 1996, 1995 and 1994 was $244,000,
$213,000, and $192,000, respectively.

         Services  are  recognized  as  revenue  upon  completion  of tests  for
specialty laboratory services.

         Revenue  under  long-term  contracts,  including  funded  research  and
development  contracts,  is recorded under the percentage of completion  method,
wherein costs plus profit is recorded as service  revenue and billed  monthly as
the work is performed. Certain customers make advance payments that are deferred
until revenue recognition is appropriate. Unbilled amounts for fee retainage are
included  in  accounts  receivable  at  December  31,  1996  and  1995,  and are
immaterial.  When the current contract estimates  indicate a loss,  provision is
made for the total  anticipated loss. The Company does not believe there are any
material collectability issues associated with these receivables.

         Total revenue related to funded research and development  contracts was
approximately  $1,126,000,  $728,000,  and $660,000 for the years ended December
31, 1996,  1995 and 1994,  respectively.  Total contract costs  associated  with
these  agreements  were  approximately  $975,000,  $575,000 and $511,000 for the
years ended December 1996, 1995 and 1994, respectively.



                                      -26-


                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES -- (CONTINUED)

  (IV) CASH AND CASH EQUIVALENTS

         The  Company's  policy  is to  invest  available  cash  in  short-term,
investment grade,  interest bearing  obligations,  including money market funds,
municipal notes, and bank and corporate debt instruments.  Securities  purchased
with initial maturities of three months or less, are valued at cost plus accrued
interest,  which  approximates  market,  and classified as cash equivalents.  At
December  31,  1996 the  Company's  cash  equivalents  consisted  of  $6,091,120
invested in a money market fund and a banker's acceptance of $1,991,522.

  (V) RESEARCH AND DEVELOPMENT COSTS

         Research and development costs are expensed as incurred.

  (VI) INVENTORIES

         Inventories  are stated at the lower of average cost or net  realizable
value and include material, labor and manufacturing overhead.

  (VII) PROPERTY AND EQUIPMENT

         Property and  equipment  are stated at cost.  For  financial  reporting
purposes,   depreciation  is  recognized  using  accelerated  and  straight-line
methods,  allocating  the cost of the assets over their  estimated  useful lives
ranging from five years to ten years for certain  manufacturing  and  laboratory
equipment,  five years for office equipment and management  information systems,
three years for automobiles and fifteen years for the building.  Upon retirement
or sale, the cost and related accumulated  depreciation of the asset are removed
from the books. Any resulting gain or loss is credited or charged to income.

  (VIII) GOODWILL AND INTANGIBLES

         Goodwill  results from excess of the purchase  prices over the acquired
net assets of BTRL and BBICL and is amortized on a straight  line basis over ten
years.   Other  intangibles   primarily  consist  of  patents,   licenses,   and
intellectual property rights and are amortized over four to ten years.

         In  March  1995,  the  Financial   Accounting  Standards  Board  issued
Statement  of  Financial  Accounting  Standards  No.  121,  "Accounting  for the
Impairment of  Long-Lived  Assets and for  Long-Lived  Assets to Be Disposed Of"
("SFAS  121").  SFAS 121 requires  that an  impairment  loss be  recognized  for
long-lived assets and certain identified intangibles when the carrying amount of
these assets may not be recoverable.  The Company has adopted SFAS 121 effective
in 1996  and the  adoption  did not  have a  material  impact  on the  financial
statements.

  (IX) INCOME TAXES

         The Company  utilizes the  liability  method of  accounting  for income
taxes.  Under  the  liability  method,   deferred  taxes  arise  from  temporary
differences  between  the  financial  statement  and tax  bases  of  assets  and
liabilities  using  enacted  tax  rates in  effect  in the  years  in which  the
differences are expected to reverse.  A valuation  allowance is provided for net
deferred  tax assets if, based on the weighted  available  evidence,  it is more
likely  than  not  that  some or all of the  deferred  tax  assets  will  not be
realized. Tax credits are recognized when realized using the flow through method
of accounting.

  (X) CONCENTRATION OF CREDIT RISK

         Financial   instruments  which  potentially   subject  the  Company  to
concentrations  of credit risk are principally  cash and cash  equivalents,  and
accounts  receivable.  The Company places its cash in federally chartered banks,
each of which  is  insured  up to  $100,000  by the  Federal  Deposit  Insurance
Corporation.  The Company  limits credit risk in cash  equivalents  by investing
only in short term,  investment  grade  securities  including money market funds
restricted  to such  securities.  Concentration  of credit risk with  respect to
accounts  receivable  is limited to certain  customers to whom the Company makes
substantial  sales (see also Note 5). The Company  does not  require  collateral
from its customers. To reduce risk, the Company routinely assesses the financial
strength  of its  customers  and,  as a  consequence,  believes  that its  trade
accounts receivable credit risk exposure is limited.



                                      -27-



                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES -- (CONTINUED)

  (XI) DEFERRED REVENUE

           Deferred  revenue  consists of payments  received  from  customers in
advance of services performed.

  (XII) COMPUTATION OF NET INCOME PER SHARE

         Net income per common share is computed based upon the weighted average
number of common shares and common  equivalent  shares (using the treasury stock
method) outstanding after certain adjustments described below. Common equivalent
shares consist of common stock options and warrants  outstanding.  In accordance
with Securities and Exchange  Commission Staff  Accounting  Bulletin No. 83, all
common and common  equivalent shares issued during the twelve month period prior
to the initial filing of the Company's S-1  Registration  Statement  (August 23,
1996) have been included in the calculation as if they were  outstanding for all
periods using the treasury stock method and an initial public  offering price of
$8.50 per share.  Fully  diluted net income per common share is not presented as
it does not differ from primary earnings per share.

  RECENT ACCOUNTING STANDARDS

         The  Financial  Accounting  Standards  Board issued  Statement  No. 128
("SFAS 128"), "Earnings per Share", which requires the presentation of basic and
diluted earning per share (EPS).  Basic EPS excludes dilution and is computed by
dividing income available to common stockholders by the weighted-average  number
of common shares outstanding for the period.  Diluted EPS reflects the potential
dilution that could occur if securities or other contracts to issue common stock
were  exercised  or  converted  into common stock or resulted in the issuance of
common stock that then shared in the earnings of the entity.  Basic EPS replaces
primary EPS.  Diluted EPS is computed  similarly to fully  diluted EPS under the
existing rules. The Company will adopt SFAS 128 as of December 15, 1997 and upon
adoption, will restate all prior period EPS data presented.  The Company has not
yet quantified what the impact of SFAS 128 will be on EPS.

(2) INVENTORIES

         The Company  purchases  human plasma and serum from various private and
commercial  blood  banks.  Upon  receipt,   such  purchases   generally  undergo
comprehensive  testing,  and  associated  costs are included in the value of raw
materials.  Most plasma is  manufactured  into  Basematrix and other  diagnostic
components  to  customer  specifications.  Plasma  and  serum  with the  desired
antibodies or antigens are sold or  manufactured  into Quality  Control  Panels,
Accurun(TM) run controls,  and reagents ("Finished Goods").  Panels and reagents
are unique to specific donors and/or collection periods, and require substantial
time to characterize and manufacture due to stringent technical  specifications.
Panels play an important role in diagnostic test kit development,  licensure and
quality  control.  Panels are  manufactured  in  quantities  sufficient  to meet
expected user demand which may exceed one year.  Inventory  balances at December
31, 1996 and 1995 consist of the following:


                                             1996              1995
                                         --------------    --------------

Raw materials                             $  1,359,569      $  1,298,131
Work-in-process                                697,749           565,667
Finished goods                               2,123,016         1,813,053
                                         --------------    --------------
                                          $  4,180,334     $   3,676,851
                                         ==============    ==============




                                      -28-





                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(3) PROPERTY AND EQUIPMENT

         Property  and  equipment  at December  31, 1996 and 1995 consist of the
following:



                                                1996              1995
                                            --------------    --------------
Laboratory equipment                         $  1,751,737      $  1,630,872
Management information systems                  1,247,190           834,768
Office equipment                                  394,957           332,496
Automobiles                                       196,663           178,465
Leasehold improvements                            122,419           108,892
Land, building and improvements                   956,386           941,175
                                            --------------    --------------
                                                4,669,352         4,026,668
Less accumulated depreciation                   1,970,194         1,411,686
                                            --------------    --------------

Net book value                               $  2,699,158      $  2,614,982
                                            ==============    ==============







         Depreciation expense for the years ended December 31, 1996 and 1995 was
approximately $585,500, and $425,700, respectively.

(4) LONG TERM INVESTMENT

         In October 1996, the Company entered into a License Agreement, Purchase
Agreement,  Stockholders'  Agreement  and Warrant  Agreement  with BioSeq,  Inc.
("BioSeq") a privately held, technology based development stage company.

         The  Company  has  agreed  to  purchase  convertible   preferred  stock
equivalent to approximately  19% of the capital stock of BioSeq for an aggregate
of $1,482,500 in three installments. Of the $1,482,500, $210,000 was invested at
the date of the  agreements  and  $522,500 was  invested in November  1996.  The
Company must make the remaining  $750,000  installment if BioSeq attains certain
technical  milestones by July 31, 1997. If such  milestones  are not attained by
BioSeq by July 31,  1997,  the  Company  will  still have the option to make the
remaining  $750,000  investment  until  December 31, 1997.  Under the  operative
documents,  the Company has price anti-dilution  protection,  pre-emptive rights
and the right to board  representation.  In  addition,  the  Company was granted
warrants to acquire  additional  shares of common stock of BioSeq for additional
consideration  under  certain  conditions,  provided  that  this  right  is  not
exercisable  to the extent it would cause the  Company's  ownership  to equal or
exceed 20%. The Company is accounting  for its  investment in BioSeq on the cost
basis  in  accordance  with  the  provisions  of APB  18  since  its  cumulative
investment  is and must  remain  less that 20% of the  equity of BioSeq  and the
Company does not exert significant  influence or control. Due to the uncertainty
of technology  based  development  stage  enterprises and in accordance with the
provisions  of SFAS 121,  the Company  will  perform a periodic  analysis of the
investment to determine  whether the carrying  value of its investment in BioSeq
has been impaired. If so determined, the Company would adjust the carrying value
of its investment by taking a charge to earnings.

         Upon the earlier of payment of the final  installment  of the Company's
aggregate  $1,482,500  investment  and December  31,  1997,  the Company will be
granted a worldwide  right to use the BioSeq  technology  relating to sequencing
and analysis  services.  The License will be  exclusive  until BioSeq  commences
selling on a  commercial  basis the  equipment  used in the DNA  sequencing  and
analysis  process,  at which time the  License  will become  non-exclusive.  The
License  provides that the Company will pay BioSeq  royalties  ranging from five
percent to ten percent of net revenues arising out of the services  performed by
the Company  with the  licensed  technology.  The Company  will  account for the
royalty as a cost of revenue as the revenues are earned.


                                      -29-





                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(5) REVENUE FROM SIGNIFICANT CUSTOMERS AND EXPORT SALES

         The Company performs contract research and certain other services under
contracts,  subcontracts  and grants from  United  States  Government  Agencies,
primarily  the  National  Institutes  of  Health  ("NIH").   Revenue  from  such
contracts,  subcontracts  and  grants  was  approximately  $1,920,000  in  1996,
$1,628,000 in 1995 and $1,677,000 in 1994.

         Export  sales  accounted  for  approximately   $3,914,000,  or  25%  of
consolidated revenue in 1996; $3,104,000, or 25% in 1995; and $2,279,000, or 21%
in 1994.

(6) LONG TERM DEBT

         The Company's  revolving line of credit  ("Revolver") has a due date of
June 30,  1998 and bears  interest  at prime  plus  1/2%.  Borrowings  under the
Revolver are limited to 80% of eligible  accounts  receivable plus the lesser of
40% of inventory or $1,500,000.  The Company had $3,500,000 available under it's
Revolver as of December 31, 1996.  Amounts  outstanding  under the Revolver,  if
any, are  collateralized  by all of the  Company's  assets and a $2 million life
insurance  policy of an  officer/stockholder.  The Revolver  contains  covenants
regarding the Company's  debt-to-equity  ratio and certain  minimum debt service
coverage  ratios.  The Revolver further provides for restrictions on the payment
of  dividends,  limitations  on  the  acquisition  of  property  and  equipment,
limitations on additional borrowings, and certain minimum stock ownership levels
by the officer/stockholder referred to above.

         In December 1995, the Company purchased its corporate  headquarters and
manufacturing  facility in West  Bridgewater,  MA from its former  landlord at a
price of $806,800  including  closing costs, and borrowed $750,000 from its bank
to finance the  purchase.  This mortgage on this property was repaid in December
1996 from proceeds of the Company's initial public offering of common stock. See
also Note 3.

         During 1996,  convertible  debt in the amount of $21,500 was  converted
into 14,333  shares of common stock at a price of $1.50 per share.  During 1995,
convertible  debt in the amount of $9,600  was  converted  into 5,817  shares of
common stock at a price of $1.65 per share.

         The Company prepaid  substantially  all debt out of the proceeds of its
initial  public  offering.  At December  31, 1996 and 1995,  the Company had the
following debt outstanding:



<TABLE>
<CAPTION>

                                                                                             1996           1995
                                                                                          ------------  -------------


<S>                                                                                        <C>           <C>        
Revolving line of credit agreement due June 30, 1998.                                      $        -    $ 2,784,307

Four notes payable to one bank which had interest rates from 8.22% to 9.25%, and
   due dates from October 1998 through December 2000. Collateralized by all the
   assets of the Company.                                                                           -        995,445

Note payable to a bank, due in 84 fixed payments of principal and interest of
   $11,729, bearing interest fixed at 8.30% for the first five years, and floating at
   prime plus 1.0% for the remaining term. Collateralized by a mortgage and all
   of the assets of the Company.                                                                    -        750,000

Subordinated convertible note payable, which was converted by the holder into
   common stock at $1.50 per share.                                                                 -         21,500

Other installment note payable with an interest rate of 9.75% and due August 2001.
   Collateralized by office and laboratory equipment and furniture.                            53,768        100,758
                                                                                          ------------  -------------
    Total long term debt                                                                       53,768      4,652,010
    Less: current maturities                                                                  (12,820)      (436,509)
                                                                                          ------------  -------------
                                                                                           $   40,948    $ 4,215,501
                                                                                          ============  =============
</TABLE>


Debt maturities beyond current are $14,128 in 1998, $15,569 in 1999, and $11,251
in 2000.

                                      -30-






                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(7) INCOME TAXES


         The Company's effective tax rate does not significantly differ from the
federal and state income tax statutory  rates.  The  components of the provision
for income taxes are as follows:




<TABLE>
<CAPTION>
                                                      1996            1995            1994
                                                   ------------    ------------    -----------
<S>                                                 <C>             <C>             <C>      
Current expense: federal and state                  $  476,206      $  130,422      $  91,242
Deferred (benefit) expense: federal and state         (155,495)        (61,765)       (26,891)
                                                   ------------    ------------    -----------
        Total                                       $  320,711      $   68,657      $  64,351
                                                   ============    ============    ===========

</TABLE>


         Significant  items making up deferred tax  liabilities and deferred tax
assets are as follows:



<TABLE>
<CAPTION>

                                                                      1996            1995
                                                                  -------------   -------------
        <S>                                                        <C>             <C>
        Current deferred taxes:
            Inventory                                              $    87,158               -
            Accounts receivable allowance                              115,548     $    56,863
            Other accruals                                              80,494          53,903
                                                                  -------------   -------------
                 Total deferred tax assets                             283,200         110,766
        Long term deferred taxes:
            Accelerated tax depreciation                              (176,015)       (207,361)
            Goodwill                                                    13,551         (22,795)
            Tax credits                                                      -         106,710
            State net operating loss carryforwards                      60,884          38,805
                                                                  -------------   -------------
                 Total deferred tax liabilities                       (101,580)        (84,641)
                                                                  -------------   -------------
                 Total net deferred tax (liabilities) assets       $   181,620     $    26,125
                                                                  =============   =============

</TABLE>

         As of December 31, 1996,  the state net  operating  loss  carryforwards
expire at various dates beginning in 1999 through 2007.

(8) COMMITMENTS AND CONTINGENCIES

         The Company  leases  certain  office  space,  laboratory,  and research
facilities  under operating leases with various terms through July 2000. All the
real estate leases include renewal options at increasing levels of rent.

         One of the facility leases includes  scheduled base rent increases over
the term of the lease.  The  amount of base rent  payments  is being  charged to
expense on the  straight-line  method over the term of the lease. As of December
31, 1996 and 1995, the Company has recorded a liability of $53,900 and $141,100,
respectively, included in accrued expenses to reflect the excess of rent expense
over cash payments since  inception of the lease.  In addition to base rent, the
Company  pays a monthly  allocation  of the  operating  expenses and real estate
taxes for the above facilities.

         Rent expense for the years ended  December 31, 1996,  1995 and 1994 was
$365,700,  $477,600,  and  $549,700,  respectively.  At December 31,  1996,  the
remaining fixed lease commitment was as follows:

           Year Ended                                     Amount   
         --------------                                ----------  
              1997                                       254,600   
                                                                   
              1998                                       117,300   
                                                                   
              1999                                       124,800   
                                                                   
              2000                                        79,700   
                                                        --------   
                                                        $576,400   
                                                        --------   
                                                  


         Commencing in February  1995, the Company  committed  under a sponsored
research  agreement with a university to fund a research  scientist at a cost of
$13,125 per  quarter  for three  years  which costs are charged to research  and
development expense. In return, the Company has exclusive rights to any anti-HIV
compounds or derivatives developed in the course of this research,  provided the
Company obtains certain regulatory approvals from the FDA.

                                      -31-







                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(9) RETIREMENT PLAN

         In January 1993, the Company adopted a retirement  savings plan for its
employees,  which has been qualified under Section 401(k) of the Code.  Eligible
employees are permitted to  contribute  to the plan through  payroll  deductions
within  statutory  limitations  and subject to any  limitations  included in the
plan. To date, the Company has made no contributions to the plan.

(10) STOCKHOLDERS' EQUITY

     COMMON STOCK

           On October  31,  1996,  the Company  commenced  trading on the Nasdaq
 National  Market as a result of the initial public offering of its common stock
 ("IPO"),  raising net proceeds of $11,633,000 from the sale of 1,600,000 shares
 at $8.50 per share.

         On April 26, 1996, the Company entered into a Stock Purchase  Agreement
and Exclusive  Distributor  Agreement for five years with a foreign distributor.
Pursuant to the Stock Purchase  Agreement,  the Company issued 117,647 shares of
redeemable common stock at a price per share of $8.50, for which it received net
proceeds  of  $898,503.  Issuance  costs were  $101,497.  Completion  of the IPO
terminated the redemption  feature.  The  distributor is restricted from selling
these  securities for a one-year period after completion of the IPO. The Company
issued the 80,000 shares of Treasury Stock in connection with this transaction.

         On August 8, 1996 the Board of  Directors  approved  a 1-for-2  reverse
stock split and an increase  in  authorized  common  shares to  20,000,000,  and
authorized  1,000,000  shares of preferred  stock (par value  $.01),  which were
approved by the  stockholders  on September  10, 1996.  The stock split has been
retroactively  reflected in the accompanying  financial statements and notes for
all periods presented.

     OPTIONS AND WARRANTS

         The Company has two stock  option  plans  which are  administered  by a
committee of the Board of Directors who  determines the employees and affiliated
persons to receive  options and the number and option price of shares covered by
each such option. Options granted under both plans may be either incentive stock
options or non-qualified stock options. In general, for incentive stock options,
the option  price shall not be less than the fair  market  value at the time the
option is granted.  Generally,  options become exercisable at the rate of 25% at
the end of each of the  four  years  following  the  anniversary  of the  grant.
Options issued expire ten years from the date of grant, or 30 days from the date
of termination or affiliation.

         At  December  31,  1996,   897,600   shares  have  been   reserved  for
non-qualified stock options, of which 98,875 are available for future grants. At
December  31,  1996,  750,000  shares have been  reserved  for  incentive  stock
options, of which 574,462 are available for future grants.

         The  Company  applies  Accounting  Principles  Board  Opinion  No.  25,
"Accounting  for Stock  Issued to  Employees"  and  related  Interpretations  in
accounting for the plans. Accordingly,  no compensation cost has been recognized
for the plans. Had  compensation  cost for the plans been determined on the fair
value at the grant  dates for awards  under the plans in 1996 and 1995 using the
minimum value method  consistent  with SFAS No. 123 for grants prior to the IPO,
the  Company's  net income would have been reduced by $77,500 or $0.02 per share
in 1996, and by $23,300 or $0.01 per share in 1995. In computing these pro forma
amounts the Company has assumed a risk-free interest rate equal to approximately
6.18%,  no dividends,  and expected  average option life of  approximately  five
years.  There were no options  granted  subsequent to the IPO. SFAS 123 does not
apply to  awards  prior to 1995,  and  additional  awards  in  future  years are
anticipated.  The average fair value of options  granted during 1996 and 1995 is
estimated as $1.93 and $1.59, respectively, on the date of the grant.

         The  Company  has issued  warrants  in  connection  with  certain  debt
financings.  As of December 31, 1996,  120,000  shares of Common Stock have been
reserved  for issuance  pursuant to the exercise of such  warrants at a weighted
average exercise price of $2.50 per share.


                                      -32-


                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


 (10) STOCKHOLDERS' EQUITY - (CONTINUED)
         The Company has reserved  shares of its authorized but unissued  common
stock for the following:

<TABLE>
<CAPTION>
                                               Stock Options                        Warrants
                                    --------------------------------------------------------------------
                                                        Weighted                          Weighted                  Total
                                                      Average price                     Average price   ----------------------------
                                         Shares         per share         Shares          per share         Shares       Exercisable
                                    ----------------  ---------------  --------------  ---------------  ---------------  -----------
<S>                                         <C>            <C>               <C>            <C>              <C>            <C>    
Balance outstanding, December 31, 1993      881,850        2.14              306,138        2.66             1,187,988      712,163
      Granted                                     -           -                    -           -                     -
      Exercised                             (19,375)       0.68               (4,600)       3.75               (23,975)
      Expired                               (81,525)       2.69                    -           -               (81,525)
                                    ----------------                   --------------                   ---------------
Balance outstanding, December 31, 1994      780,950        2.12              301,538        2.73             1,082,488      827,576
      Granted                                73,187        6.00                    -           -                73,187
      Exercised                              (6,000)       1.88              (41,200)       2.58               (47,200)
      Expired                               (47,850)       2.64                    -           -               (47,850)
                                    ----------------                   --------------                   ---------------
Balance outstanding, December 31, 1995      800,287        2.45              260,338        2.85             1,060,625      879,038
      Granted                               140,600        7.27                    -           -               140,600
      Exercised                              (1,500)       4.50              (84,260)       2.88               (85,760)
      Expired                               (21,500)       6.05              (56,078)       3.54               (77,578)
                                    ================                   ==============                   ===============
Balance outstanding, December 31, 1996       917,887       3.10              120,000        2.50             1,037,887      839,272
                                    ================                   ==============                   ===============

The following table summarizes information concerning options outstanding and exercisable as of December 31, 1996:
</TABLE>

<TABLE>
<CAPTION>
                                                            Options Outstanding               Options Exercisable
                                                      --------------------------------  ---------------------------------
     Range of Exercise Prices       Weighted                               Weighted                           Weighted
                                     Average              Number of        Average         Number of           Average
                                 Remaining Life            Options      Exercise Price       Options       Exercise Price
                                 -----------------------------------------------------------------------------------------
           <S>                        <C>                  <C>               <C>            <C>                  <C> 
           $0.25 - $1.65              3.49                 359,500           1.21           359,500              1.21
           $2.50 - $4.50              5.59                 359,600           2.98           328,538              2.89
           $6.00 - $8.50              9.40                 198,787           6.86            31,234              6.00
                                                      ===============                   ================
                                                           917,887                           719,272
                                                      ===============                   ================
</TABLE>

(11) SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)

         Unaudited (Amounts in thousands, except for per share data)

<TABLE>
<CAPTION>
<S>                                    <C>          <C>          <C>          <C>     
1996                                  1st Qtr      2nd Qtr      3rd Qtr      4th Qtr
                                     ----------   ----------   ----------   ----------
        Total revenue                  $ 3,084      $ 3,844      $ 4,015      $ 4,566 
        Gross profit                     1,051        1,621        1,752        1,976 
        Net income (loss)                  (97)         179          163          236 
        Income (loss) per share          (0.04)        0.06         0.05         0.06 


1995                                  1st Qtr      2nd Qtr      3rd Qtr      4th Qtr  
                                     ----------   ----------   ----------   ----------
        Total revenue                  $ 2,728      $ 2,837      $ 2,896      $ 3,810 
        Gross profit                       853        1,105        1,107        1,474 
        Net income (loss)                  (39)           3          (19)         159 
        Income (loss) per share          (0.01)        0.00        (0.01)        0.05 
</TABLE>




                                      -33-




                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(12) SUBSEQUENT EVENTS

     SOURCE SCIENTIFIC ACQUISITION

         On March 26, 1997 the Company entered into an Asset Purchase  Agreement
to acquire  substantially  all of the assets and  business  and assume  selected
liabilities of Source  Scientific,  Inc.  ("Source") for $2.1 million in cash. A
substantial  majority of this  purchase  price will be allocated to goodwill and
other intangibles  Goodwill is expected to be amortized over 10 years. Source is
a developer and  manufacturer  of a broad line of clinical  instrumentation  and
biomedical devices for the worldwide in vitro diagnostic  industry.  The Company
has advanced  Source $650,000 in the form of senior secured demand notes to fund
working capital, product development and other operational needs. The notes bear
interest  of 15%.  The  Company  expects to make  additional  advances  prior to
closing. The proposed  acquisition is subject to standard conditions,  including
Source  shareholder  approval and will be recorded in  accordance  with purchase
accounting.

     NEW LOAN AGREEMENT

         Effective  March 28,  1997,  the Company  terminated  its  Revolver and
entered  into a $7.5  million  uncollateralized  revolving  line of credit ("New
Line") with its bank.  The New Line matures on June 30, 1999;  bears interest at
the Company's  option based on either base rate,  LIBOR plus 1.75%, or overnight
money  market  rate plus 1.75%;  and  carries a facility  fee of .25% per annum,
payable quarterly. The New Line contains covenants regarding the Company's ratio
of total  liabilities-to-equity,  minimum  tangible net worth,  and minimum debt
service  coverage ratio.  The New Line further  provides for restrictions on the
payment of dividends, and limitations on additional borrowings.

(13) SUPPLEMENTARY PRO FORMA EARNINGS PER SHARE - (UNAUDITED)

         If the Offering had been completed on January 1, 1995, a portion of the
proceeds  would have been used to retire all debt  outstanding at that time, and
all debt  incurred  in 1995 and 1996  would not have been  needed.  Based on the
foregoing,  supplemental  pro forma net earnings per share of common stock would
have  been  $.19  and $.09 for the  years  ended  December  31,  1996 and  1995,
respectively. Such net earnings per share of common stock are based on 3,544,183
and 3,626,391 shares of common stock  respectively,  consisting of 3,069,269 and
3,151,477  shares of common  stock and common  stock  equivalents  plus  474,914
shares  assumed to be issued at $8.50 per share as if the  Offering had occurred
on January 1, 1995 to retire indebtedness outstanding during 1995.



                                      -34-




                        REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders of
BOSTON BIOMEDICA, INC.:

         We have audited the accompanying  consolidated balance sheets of Boston
Biomedica,  Inc.  and  Subsidiaries  as of  December  31,  1996 and 1995 and the
related consolidated  statements of income,  stockholders' equity and cash flows
for each of the  three  years in the  period  ended  December  31,  1996.  These
consolidated  financial  statements  are  the  responsibility  of the  Company's
management.  Our  responsibility is to express an opinion on these  consolidated
financial statements based on our audits.

         We conducted our audits in accordance with generally  accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

         In our opinion, the consolidated financial statements referred to above
present  fairly,  in all material  respects,  the  financial  position of Boston
Biomedica,  Inc.  and  Subsidiaries  as of  December  31,  1996 and 1995 and the
results of their  operations and their cash flows for each of the three years in
the period  ended  December  31,  1996 in  conformity  with  generally  accepted
accounting principles.


                                                                  
COOPERS & LYBRAND L.L.P.

Boston, Massachusetts 
March 4, 1997, except as to 
Note 12, for which the date is
March 28, 1997



                                      -35-




ITEM  9.  CHANGES  IN AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND
FINANCIAL DISCLOSURE


         None.


                                    PART III


ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT


         The  information  called for by Item 10 is incorporated by reference to
the  information  under Part I, Item 1 - Business  under the caption  "Executive
Officers of the Registrant" at page 14 of this Report, and to the information in
the Registrant's definitive Proxy Statement which is expected to be filed by the
Registrant within 120 days after the close of its fiscal year.


ITEM 11. EXECUTIVE COMPENSATION


         The  information  called for by Item 11 is incorporated by reference to
the information in the Registrant's definitive Proxy Statement which is expected
to be filed by the  Registrant  within  120 days  after the close of its  fiscal
year.


ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT


         The  information  called for by Item 12 is incorporated by reference to
the information in the Registrant's definitive Proxy Statement which is expected
to be filed by the  Registrant  within  120 days  after the close of its  fiscal
year.


ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.


         The  information  called for by Item 13 is incorporated by reference to
the information in the Registrant's definitive Proxy Statement which is expected
to be filed by the  Registrant  within  120 days  after the close of its  fiscal
year.



                                      -36-





                                     PART IV


ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON  
         FORM 8-K.

<TABLE>
<CAPTION>

 (A) 1. INDEX TO FINANCIAL STATEMENTS:
<S>                                                                                                     <C>
       Consolidated Balance Sheets as of December 31, 1996 and 1995.......................................22
       Consolidated Statements of Income for the three years ended December 31, 1996......................23
       Consolidated Statements of Changes in Stockholders' Equity for the three years ended
                        December 31, 1996.................................................................24
       Consolidated Statements of Cash Flows for the three years ended December 31, 1996..................25
       Notes to Consolidated Financial Statements.........................................................26
       Report of Independent Accountants..................................................................35

(A) 2. FINANCIAL STATEMENT SCHEDULES:
       Schedule II-Valuation and Qualifying Accounts......................................................42
       Report of Independent Accountants..................................................................43
</TABLE>

       All  supplemental  schedules other than as set forth above are omitted as
inapplicable or because the required information is included in the Consolidated
Financial Statements or the Notes to Consolidated Financial Statements.

(A) 3. EXHIBITS:

<TABLE>
<CAPTION>

       Exhibit No.
<S>              <C>                                                                      
       3.1        Amended and Restated Articles of Organization of the Company**

       3.2        Amended and Restated Bylaws of the Company**

       4.1        Specimen Certificate for Shares of the Company's Common Stock**

       4.2        Description of Capital Stock (contained in the Restated Articles of Organization of the Company
                  filed as Exhibit 3.1) **

       10.1       Agreement, dated January 17, 1994, between Roche Molecular Systems, Inc. and the Company**

       10.2       Exclusive License Agreement, dated December 6, 1994, between the University of North Carolina at
                  Chapel Hill and the Company**

       10.3       Contract, dated September 30, 1995, between the National Institutes of Health and the Company (No.
                  1-AI55273) **

       10.4       Contract, dated September 30, 1995, between the National Institutes of Health and the Company (No.
                  1-AI-55277) **

       10.5       Contract, dated March 1, 1993, between National Cancer Institute and the Company **

       10.6       Agreement, dated October 1, 1995, between Ajinomoto Co., Inc. and the Company**

       10.7       Lease Agreement, dated June 30, 1992, for Rockville, Maryland Facility between Cambridge Biotech
                  Corporation and the Company**

       10.8       Lease Agreement, dated July 28, 1995, for New Britain, Connecticut Facility between MB Associates
                  and the Company**

       10.9       Worcester County Institution for Savings Warrant dated December 1, 1995 (No. 1) **

       10.10      Worcester County Institution for Savings Warrant dated July 26, 1993 (No. 2) **

       10.11      Stock Purchase Agreement, dated June 5, 1990, between G&G Diagnostics Limited Partnership I and
                  the Company, as amended**
    

                                      -37-




       10.12      Purchase and Sale Agreement, dated December 11, 1995, for 375 West Street Property between James
                  Leonard, Trustee, C.W.B. Trust and the Company**

       10.13      Purchase and Sale Agreement, dated December 20, 1995, for 80 Manley Street Property between the
                  Company and Donald M. Leonard, Trustee, Live Oak Realty Trust**

       10.14      Stock Purchase Agreement, dated April 26, 1996, between Kyowa Medex Co., Ltd. and the Company**

       10.15      1987 Non-Qualified Stock Option Plan**++

       10.16      Employee Stock Option Plan**++

       10.17      Underwriters Warrants, each dated November 4, 1996, between the Company and each of Oscar Grus &
                  Son Incorporated and Kaufman Bros., L.P. **

       10.20      Purchase Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company**

       10.21      Warrant Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company**

       10.22      Stockholders' Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company**

       10.23      License Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company**

       10.24.1    Commercial Loan Agreement, dated as of March 28, 1997, between
                  The First National Bank of Boston and the Company

       10.25      Asset Purchase Agreement, dated March 26, 1997 between Source Scientific, Inc. and the Company

       11.1       Statement re: Computation of Per Share Earnings

       21.1       Subsidiaries of the Company

       27         Financial Data Schedule

</TABLE>






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

++     Management contract or compensatory plan or arrangement.

**     In accordance with Rule 12b-32 under the Securities Exchange Act of 1934,
       as amended,  reference is made to the documents previously filed with the
       Securities   and  Exchange   Commission,   which   documents  are  hereby
       incorporated by reference.

(B) REPORTS ON FORM 8-K.

                  The  Registrant  did not file any Current  Reports on Form 8-K
during the quarter ended December 31, 1996.



                                      -38-






                                   SIGNATURES

                  Pursuant  to the  requirements  of  Section 13 or 15(d) of the
Securities  Exchange Act of 1934,  the Registrant has duly caused this report to
be signed on its behalf by the undersigned, thereunto duly authorized.

Date: March 28, 1997                 Boston Biomedica, Inc.

                                     By:   /s/ Richard T. Schumacher
                                           -------------------------
                                           Richard T. Schumacher
                                           President and Chief Executive Officer

                  Pursuant to the requirements of the Securities Exchange Act of
1934,  this report has been signed below by the  following  persons on behalf of
the Registrant and in the capacities and on the dates indicated.



<TABLE>
<CAPTION>

         SIGNATURES                                  TITLES                                         DATE
         ----------                                  ------                                          ----

       <S>                                          <C>                                       <C>

           /s/ Richard T. Schumacher                 President, Chief Executive Officer,      March 28, 1997
          ----------------------------------         and Chairman of the Board     
        Richard T. Schumacher                         (Principal Executive Officer)
                                                      

           /s/  Kevin W. Quinlan                     Senior Vice President, Finance;          March 28, 1997
         -----------------------------------         Chief Financial Officer; Treasurer   
         Kevin W. Quinlan                            and Director                         
                                                     (Principal Accounting Officer)       
                                                     

           /s/  Calvin A. Saravis                    Director                                 March 28, 1997
         -----------------------------------
         Calvin A. Saravis

           /s/  Henry A. Malkasian Sr.               Director                                 March 28, 1997
         -----------------------------------
         Henry A. Malkasian Sr.

           /s/  Francis E. Capitanio                 Director                                 March 28, 1997
         -----------------------------------
         Francis E. Capitanio


</TABLE>


                                      -39-




EXHIBIT INDEX

<TABLE>
<CAPTION>

       Exhibit No.                                                                                      Reference

      <S>        <C>                                                                                    <C>
       3.1        Amended and Restated Articles of Organization of the Company                             A**

       3.2        Amended and Restated Bylaws of the Company                                               A**

       4.1        Specimen Certificate for Shares of the Company's Common Stock                            A**

       4.2        Description of Capital Stock (contained in the Restated Articles of                      A**
                  Organization of the Company filed as Exhibit 3.1)

       10.1       Agreement, dated January 17, 1994, between Roche Molecular Systems, Inc. and             A**
                  the Company

       10.2       Exclusive License Agreement, dated December 6, 1994, between the University of           A**
                  North Carolina at Chapel Hill and the Company

       10.3       Contract, dated September 30, 1995, between the National Institutes of Health            A**
                  and the Company (No. 1-AI55273)

       10.4       Contract, dated September 30, 1995, between the National Institutes of Health            A**
                  and the Company (No. 1-AI-55277)

       10.5       Contract, dated March 1, 1993, between National Cancer Institute and the Company         A**

       10.6       Agreement, dated October 1, 1995, between Ajinomoto Co., Inc. and the Company            A**

       10.7       Lease Agreement, dated June 30, 1992, for Rockville, Maryland Facility between           A**
                  Cambridge Biotech Corporation and the Company

       10.8       Lease Agreement, dated July 28, 1995, for New Britain, Connecticut Facility              A**
                  between MB Associates and the Company

       10.9       Worcester County Institution for Savings Warrant dated December 1, 1995 (No. 1)          A**

       10.10      Worcester County Institution for Savings Warrant dated July 26, 1993 (No. 2)             A**

       10.11      Stock Purchase Agreement, dated June 5, 1990, between G&G Diagnostics Limited            A**
                  Partnership I and the Company, as amended

       10.12      Purchase and Sale Agreement, dated December 11, 1995, for 375 West Street                A**
                  Property between James Leonard, Trustee, C.W.B. Trust and the Company

       10.13      Purchase and Sale Agreement, dated December 20, 1995, for 80 Manley Street               A**
                  Property between the Company and Donald M. Leonard, Trustee, Live Oak Realty
                  Trust

       10.14      Stock Purchase Agreement, dated April 26, 1996, between Kyowa Medex Co., Ltd.            A**
                  and the Company

       10.15      1987 Non-Qualified Stock Option Plan*                                                    A**

       10.16      Employee Stock Option Plan*                                                              A**

       10.17      Underwriters  Warrants,  each dated November 4, 1996,  between
                  the Company and B** each of Oscar Grus & Son  Incorporated and
                  Kaufman Bros., L.P.

                                      -40-


       10.20      Purchase Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company          A**

       10.21      Warrant Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company           A**

       10.22      Stockholders' Agreement, dated October 7, 1996, between BioSeq, Inc. and the             A**
                  Company

       10.23      License Agreement, dated October 7, 1996, between BioSeq, Inc. and the Company           A**

       10.24.1    Commercial Loan Agreement, as of dated March 28, 1997, between
                  The First  Filed  herewith  National  Bank of  Boston  and the
                  Company

       10.25      Asset Purchase Agreement, dated March 26, 1997 between Source Scientific, Inc.     Filed herewith
                  and the Company

       11.1       Statement re: Computation of Per Share Earnings                                    Filed herewith

       21.1       Subsidiaries of the Company                                                        Filed herewith


       27         Financial Data Schedule                                                            Filed herewith

</TABLE>







- ------------------------
A      Incorporated by reference to the Company's Registration Statement on Form
       S-1  (Registration  No.  333-10759)(the  "Registration  Statement").  The
       number set forth herein is the number of the Exhibit in said registration
       statement.

B      Incorporated  by  reference  to the  Registration  Statement,  where  the
       Exhibit was filed as Exhibit No. 10.17 and contained in Exhibit 1.1.

*      Management contract or compensatory plan or arrangement.

**     In accordance with Rule 12b-32 under the Securities Exchange Act of 1934,
       as amended,  reference is made to the documents previously filed with the
       Securities   and  Exchange   Commission,   which   documents  are  hereby
       incorporated by reference.



                                      -41-




                                                                    SCHEDULE II

                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

                        VALUATION AND QUALIFYING ACCOUNTS

<TABLE>
<CAPTION>
                                                                        Recoveries
                                      Balance at                       for Accounts       Uncollectible       Balace at
                                      Beginning       Additions to      Previously           Accounts           End of
Allowance for Doubtful Accounts       of Period        Allowance        Written Off        Written Off         PPeriod
                                      ------------------------------------------------------------------------------------
<C>                                   <C>              <C>              <C>                <C>              <C>      
1996                                  $ 142,372        $ 429,677        $   62,753         $(282,744)       $ 352,058
1995                                     94,723          181,084                 -          (133,435)         142,372
1994                                     43,956          102,099                 -           (51,332)          94,723

</TABLE>



                                      -42-








                        REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders of
BOSTON BIOMEDICA, INC.:

         In connection with our audits of the consolidated  financial statements
of Boston Biomedica,  Inc. and  Subsidiaries,  as of December 31, 1995 and 1996,
and for each of the three years in the period ended  December  31,  1996,  which
financial  statements  are included in this Annual  Report on Form 10-K, we have
also audited the  consolidated  financial  statement  schedule listed in Item 14
herein.

         In our opinion,  this consolidated  financial statement schedule,  when
considered  in  relation  to the basic  financial  statements  taken as a whole,
presents  fairly,  in all  material  respects,  the  information  required to be
included therein.


                                                                               
COOPERS & LYBRAND L.L.P.

Boston, Massachusetts
March 4, 1997



                                      -43-











                                                                       EXECUTION




                            COMMERCIAL LOAN AGREEMENT

                                  By and Among

                   BOSTON BIOMEDICA, INC., BTRL CONTRACTS AND
               SERVICES, INC., BBI CLINICAL LABORATORIES, INC. and
                           BBI-SOURCE SCIENTIFIC, INC.

                                 as the Borrower

                                       and

                        THE FIRST NATIONAL BANK OF BOSTON

                                  as the Lender




                           Dated: As of March 28, 1997








                     COMMERCIAL LOAN AND SECURITY AGREEMENT
                     --------------------------------------

                               TABLE OF CONTENTS
                               -----------------
<TABLE>
<CAPTION>

                                                                                                           Page
                                                                                                           ----

<S>                                                                                                        <C>
Preamble.........................................................................................             1

Section 1 - Definitions; Use of Terms; Incorporation by Reference................................             2
- ---------

Section 2 - Establishment of  Revolving Line of Credit                                                        6
- ---------

2.1  Revolving Line of Credit                                                                                 6
2.2  Interest Rate on Loans                                                                                   7
2.3  Repayment of Loans                                                                                       7
2.4  Security for the Loans                                                                                   7
2.5  Use of Proceeds                                                                                          7
2.6  Loan Advances                                                                                            7
2.7  Other Advances and Payments                                                                              7
2.8  Loan Statements                                                                                          8
2.9  Review of  Line of Credit                                                                                8

Section 3 - Representations, Covenants and Warranties                                                         9
- ---------

3.1 General Representations, Covenants and Warranties                                                         9

    3.1.1 Business; Supplementary Information Regarding Borrower                                              9
    3.1.2 Due Organization and Existence; Authorization                                                       9
    3.1.3 Articles of Organization; Stock; Accurate Records                                                   10
    3.1.4 Binding Documents; Violation of Other Agreements                                                    10
    3.1.5 Title To Assets; Security Interests and Mortgages; Leases;
                  Royalties; etc.                                                                             10
    3.1.6  Investments                                                                                        10
    3.1.7  Litigation; Outstanding Orders                                                                     11
    3.1.8  Financial Statements Delivered                                                                     11
    3.1.9  Other Liabilities; Tax Returns; No Adverse Changes                                                 11
    3.1.10 No Agency Between Borrower and Lender                                                              11
    3.1.11 Regulation U                                                                                       11
    3.1.12 ERISA                                                                                              12
    3.1.13 Necessary Permits and Licenses                                                                     12
    3.1.14 Governmental Approvals Not Required                                                                12
    3.1.15 Adequate Financing                                                                                 12
    3.1.16 No Event of Default                                                                                13
    3.1.17 Compliance with Leases                                                                             13
    3.1.18 President and Chief Executive Officer                                                              13
    3.1.19 Compliance with Certain Environmental Laws                                                         13
    3.1.20 Recent Changes of Name or Structure                                                                13
    3.1.21 Payment of Wages                                                                                   14

3.2 Certain Affirmative Covenants                                                                             14

    3.2.1 Payment of Obligations                                                                              14
    3.2.2 Books and Records                                                                                   14
    3.2.3 Inspection                                                                                          14







    3.2.4 Commercial Purposes                                                                                 14
    3.2.5 Notice of Adverse Matters                                                                           14
    3.2.6 Principal Lending Business                                                                          14
    3.2.7  Maintenance of Corporate Existence; Compliance with Laws                                           15
    3.2.8  Payment of Taxes and Filing of Returns                                                             15
    3.2.9  Maintenance of Property and Assets                                                                 15
    3.2.10 Collection Costs; Legal Fees; etc.                                                                 15
    3.2.11 Insurance                                                                                          16
    3.2.12 Further Agreements; Compliance with Other Agreements;
                 Payment of Other Obligations; Tax Returns; Notice of Litigation
                and of Events of Default                                                                      16
    3.2.13 Certain Environmental Matters                                                                      17
    3.2.14 Changes in Master Exhibit                                                                          18
    3.2.15 Key Man Life Insurance                                                                             18

3.3  General Negative Covenants                                                                               18

    3.3.1 Other Debt                                                                                          18
    3.3.2 Payment of Dividends                                                                                19
    3.3.3 Loans by the Borrower                                                                               19
    3.3.4 Investments                                                                                         19
    3.3.5 Mergers, etc.                                                                                       19
    3.3.6 Sales of Assets                                                                                     19
    3.3.7 Negative Pledge                                                                                     19
    3.3.8 No Liens; Permitted Encumbrances                                                                    20
    3.3.9 Continuance of Business                                                                             21

Section 4 - Financial and Reporting Covenants                                                                 21
- ---------

4.1 Reporting Covenants                                                                                       21

    4.1.1 Quarterly Financial Statements                                                                      21
    4.1.2 Annual Financial Statements                                                                         21
    4.1.3 Officer's Certificate                                                                               22
    4.1.4 Other Information                                                                                   22

4.2  Financial Covenants                                                                                      23

Section 5 - Conditions of Closing                                                                             24
- ---------

5.1  Conditions of Closing                                                                                    24
5.2  Date References                                                                                          25

Section 6 - Events of Default                                                                                 25
- ---------

Section 7 - Remedies                                                                                          28
- ---------

7.1 General Remedies                                                                                          28
7.2 Cumulative Remedies                                                                                       28

Section 8 - Waiver; Termination                                                                               28
- ---------



                                     -iii-





8.1 Waiver By The Borrower                                                                                  28
8.2 Lender's Option To Waive                                                                                29

Section 9 - Miscellaneous                                                                                   29
- ---------

9.1 Deposits As Collateral; Set-Off                                                                         29
9.2 Survival of Covenants; Binding Effect                                                                   29
9.3 Termination of Agreement                                                                                30
9.4 Conflict of Terms                                                                                       30
9.5 Prior Discussions; Amendments in Writing; Counterparts;
                  Filing As Financing Statement                                                             30
9.6  General Indemnification                                                                                31
9.7  Destruction of Documents; Jurisdiction                                                                 31
9.8  Notices                                                                                                31
9.9  Application of Proceeds                                                                                32
9.10 Continuance of Defaults                                                                                32
9.11 Severability                                                                                           32
9.12 Headings                                                                                               32
9.13 Governing Law; Sealed Instrument                                                                       32
9.14 Force Majeure                                                                                          33
9.15 Interpretation of Agreement                                                                            33


Master Exhibit

Exhibit 4.1.3 Officer's Compliance Certificate
Exhibit 4.2.1

</TABLE>

                                      -iv-




                            COMMERCIAL LOAN AGREEMENT


    This Commercial  Loan Agreement (this  "Agreement") is dated as of March 28,
1997, and is by and among BOSTON  BIOMEDICA,  INC.  ("BBI"),  BTRL CONTRACTS AND
SERVICES,  INC. ("BTRL"),  BBI CLINICAL LABORATORIES,  INC. ("BBICL"),  formerly
known  as  BBI-NORTH  AMERICAN  CLINICAL   LABORATORIES,   INC.  and  BBI-SOURCE
SCIENTIFIC,  INC. ("BSS"), each of which is a Massachusetts  corporation validly
created,   legally  existing  and  in  good  standing  under  the  laws  of  the
Commonwealth of Massachusetts  and each of which has its "Notice Address" at 375
West Street,  West Bridgewater,  Massachusetts  02379 (BBI, BTRL, BBICL and BSS,
together with their respective successors and assigns, are collectively referred
to herein as the "Borrower")  and THE FIRST NATIONAL BANK OF BOSTON,  a national
banking   association   having  an  office  and  "Notice  Address"  at  Bank  of
Boston-Worcester   Tower,   P.O.  Box  15073,   100  Front  Street,   Worcester,
Massachusetts   01608-1438  (together  with  its  successors  and  assigns,  the
"Lender").

    WHEREAS,  BTRL,  BBICL and BSS are each  wholly-owned  subsidiaries  of BBI,
formed to acquire  certain  assets  determined to be useful and necessary to the
business conducted by BBI; and

    WHEREAS,  the Borrower desires to induce the Lender to lend certain sums and
otherwise to extend credit or grant financial accommodations,  all to or for the
benefit of the  Borrower  pursuant to and in  accordance  with the terms of this
Agreement; and

    WHEREAS,  the Lender is willing to enter into this  Agreement and grant such
financial  accommodations  to or for the benefit of the  Borrower in  accordance
with the terms of this  Agreement only if the Borrower shall make and enter into
certain  agreements,  covenants,  representations  and  warranties  as set forth
herein and as further set forth and contained in the Financing  Instruments  (as
hereinafter  defined),  all of the  terms  and  conditions  of  which  Financing
Instruments are hereby incorporated herein by reference;

    NOW THEREFORE, in order to induce the Lender to lend certain sums, to extend
credit and to grant financial  accommodations,  all to or for the benefit of the
Borrower,  and in  consideration  thereof  and in  consideration  of the  mutual
covenants herein contained,  and for other good and valuable consideration,  the
receipt and  sufficiency of which are hereby  acknowledged,  the Borrower hereby
represents and warrants to the Lender,  and hereby covenants and agrees with the
Lender, all as follows:






                                    SECTION 1

                           DEFINITIONS; USE OF TERMS;
                           INCORPORATION BY REFERENCE

    In this Agreement:

    1.1 "ACCOUNTS" shall mean and refer to any and all of the Borrower's  rights
to payment  for goods  sold or leased or for  services  rendered,  which are not
evidenced by an  Instrument  or Chattel  Paper,  whether or not such rights have
been earned by performance,  and shall include all receivables,  notes,  drafts,
acceptances,  other forms of  obligations  and "accounts" as defined in the UCC,
all in whatever form and however arising or created;

    1.2 "BALANCE  SHEET NET WORTH" shall have the meaning  given to that term in
Section 4.2(b) below; 

    1.3  "BANKRUPTCY  CODE"  shall  have  the  meaning  given  to  that  term in
subsection 6.7.1 below;

    1.4  "BORROWER"  shall  have the  meaning  given to that  term in the  first
paragraph on the first page of this Agreement;

    1.5 "CEO" shall have the  meaning  given to that term in  subsection  3.1.18
below;

    1.6 "CLOSING  DATE" shall have the meaning given to that term in Section 5.1
below; 

    1.7 "COMMITMENT EXPIRATION DATE" shall mean the earlier to occur of: (a) the
Maturity Date; (b) the occurrence of an Event of Default hereunder;  or (c) upon
termination as provided in Section 9.3 below;

    1.8  "CONNECTICUT  OFFICE" shall mean 75 North  Mountain  Road, New Britain,
Connecticut 06053 

    1.9  "DEBT  SERVICE  RATIO"  shall  have the  meaning  given to that term in
Section 4.2.5(c) below;

    1.10  "DEFAULT"  shall mean an Event of Default or event or condition  that,
but for the  requirement  that time  elapse or notice be given,  or both,  would
constitute an Event of Default;

    1.11  "EQUIPMENT"  shall mean all motor vehicles  (whether or not subject to
motor  vehicle  registration),   rolling  stock,  machinery,  furniture,  office
equipment,  plant equipment,  fixtures, tools, spare parts,  accessories,  dies,
molds and all other like goods,  property  and assets  owned now or hereafter by
the  Borrower  and  used  in the  operation  or  furtherance  of the  Borrower's
business; and "equipment" as defined in the UCC;

    1.12 "EVENT OF DEFAULT" shall have the meaning given to that term in Section
6 below;

    1.13  "FACILITY FEE" shall have the meaning given to that term in subsection
2.4 below;

    1.14 "FINANCING  INSTRUMENTS" shall mean and refer to any and all agreements
(including this Agreement), Instruments, Documents, and other writings including
without limitation,  security agreements,  loan agreements,  notes,  guarantees,
mortgages,  deeds of trust,  collateral assignments,  subordination  agreements,
contracts,  notices,  leases, financing statements and all other written matter,
whether  heretofore,  now, or hereafter executed by or on behalf of the Borrower
and delivered to the Lender in  connection  with the  transactions  described in
this  Agreement  or  contemplated  hereby,  together  with  all  agreements  and
documents referred to therein or contemplated thereby;

    1.15 "GAAP" shall mean and refer to generally accepted accounting principles
as adopted in the United States;


                                      -2-




    1.16  "INDEMNIFIED  PARTY"  shall  have the  meaning  given to that  term in
subsection 9.6 below;

    1.17  "INTEREST  RATE  PROTECTION  CONTRACTS"  shall mean interest rate swap
agreements, interest rate collar agreements, options on any of the foregoing and
any other  agreements or  arrangements  designed to provide  protection  against
fluctuations  in interest  rates,  in each case purchased by the Borrower from a
lender with respect to Loans and approved by the Lender;

    1.18  "INVESTMENT"  shall mean the purchase or  acquisition  of any share of
capital stock,  partnership  interest,  evidence of indebtedness or other equity
security of any other Person  (including any subsidiary),  any loan,  advance or
extension  of credit  (excluding  Accounts and costs and  estimated  earnings in
excess  of  billings  arising  in  the  ordinary  course  of  business)  to,  or
contribution to the capital of, any other Person (including any subsidiary), any
real estate held for sale or investment,  any securities or commodities  futures
contracts  held, any other  investment in any other Person  (including any other
Borrower or any subsidiary),  and the making of any commitment or acquisition of
any option to make an Investment;

    1.19 "INVENTORY"  shall mean and refer to any and all of the following owned
by the Borrower: goods, wares, merchandise, raw materials, supplies, components,
work in  process,  finished  goods  and  all  packaging,  advertising,  shipping
material,  labels and other devices, names, or marks affixed thereto for purpose
of  selling  the same;  tangible  personal  property  held by the  Borrower  for
processing,  sale,  license,  or lease,  or  furnished or to be furnished by the
Borrower  under  contracts  of sale or service or to be used or  consumed in the
Borrower's  business;  items  referred to above which are in transit,  returned,
rejected, repossessed or detained; and "inventory" as defined in the UCC;

    1.20 "IRC" shall mean and refer to the  Internal  Revenue  Code of 1986,  as
amended,  and  regulations  as  promulgated  and in  effect,  from time to time,
thereunder;

    1.21  "LENDER"  shall  have  the  meaning  given to that  term in the  first
paragraph on the first page of this Agreement;

    1.22  "LIENS"  shall  mean and  refer to any and  all:  mortgages,  pledges,
security interests,  encumbrances,  liens, or charges of any kind including, but
not limited to,  agreements to give any of the foregoing;  conditional  sales or
other  title  retention  agreements  or  devices,  or any  leases in the  nature
thereof;  and the filing of, or agreement to give, any financing statement under
the Uniform Commercial Code of any jurisdiction;

    1.23 "LINE OF CREDIT  MAXIMUM  AMOUNT" shall mean and refer to the amount of
Seven Million Five Hundred Thousand and 00/100 Dollars ($7,500,000.00);

    1.24 "LOANS" shall have the meaning given to that term in Section 2.1 below;

    1.25 "MARGIN  STOCK" shall have the meaning given to that term in subsection
3.1.12 below;

    1.26 "MARYLAND OFFICE" shall mean 3 Taft Court,  Rockville,  Maryland 20850;

    1.27 "MATURITY DATE" shall mean June 30, 1999;

    1.28 "NOTE" shall mean that certain  Commercial  Term  Revolving  Promissory
Note, dated of even date herewith,  from the Borrower, made payable to the order
of the Lender,  in the face amount of the Line of Credit Maximum Amount,  as the
same may be hereafter amended, modified, substituted, extended or restated, from
time to time;

    1.29 "NOTICE ADDRESS" shall have the meaning given to that term in the first
paragraph on the first page of this Agreement;



                                      -3-




    1.30  "OBLIGATIONS"  shall  mean  and  refer  to any and  all  indebtedness,
liabilities, duties, undertakings,  covenants and agreements (including those of
payment or of performance) of the Borrower to the Lender or any affiliate of the
Lender,  all of every kind, nature and description,  and arising pursuant to the
terms of the Financing Instruments or otherwise, including, without limitation:

                  1.30.1 the Borrower's  liability to repay the Loans,  together
         with the payment of all  interest  and other monies due pursuant to the
         terms of the Note, and any and all substitutions, renewals, extensions,
         amendments  and rewritings of the Loans or the Note and all present and
         future  advances  made  thereunder  and  including  all  Interest  Rate
         Protection Contracts;

                  1.30.2 the faithful performance and observance by the Borrower
         of all agreements, covenants and conditions contained in this Agreement
         and in each of the other Financing Instruments; and

                  1.30.3  any and all such  indebtedness,  liabilities,  duties,
         undertakings, covenants and agreements whether or not the same are: now
         existing or hereafter arising;  imposed by agreement or by operation of
         law;  due  or  not  due,   absolute  or   contingent,   liquidated   or
         unliquidated,   voluntary  or  involuntary;  evidenced  by  a  writing;
         presently  contemplated  by the  parties;  the  joint  or  the  several
         liabilities of the Borrower;  direct or indirect;  related or unrelated
         to the  transactions  described  in or  contemplated  by the  Financing
         Instruments;  liabilities  or  undertakings  of the Borrower as surety,
         guarantor or endorser with respect to  obligations of one or more other
         parties;  specifically  described  as secured or  unsecured;  hereafter
         acquired by the Lender by  assignment,  other  transfer or operation of
         law; the result of any transaction  whatsoever between the Borrower and
         the  Lender;  or by reason of any cause of action  which the Lender may
         have against the Borrower;

    1.31   "PERMITTED   ACQUISITION"   shall  mean  any  domestic   corporation,
partnership,  limited liability company, joint venture or other form of domestic
entity  that  is  engaged  in the  business  of  the  Borrower  or any  business
reasonably related or complimentary thereto.

    1.32  "PERMITTED  ACQUISITION  VENTURE"  shall  mean  any  Investment  in  a
Permitted  Acquisition  for which (a) the Borrower  has provided the Lender,  in
advance of such  Acquisition,  with all of the  material  information,  reports,
financial  statements  and any other  material used by the Borrower to determine
the  suitability  and  prudence of such  Investment;  and (b) the  Borrower  has
satisfied  the  Lender  that such  Investment  will not  result in the  Borrower
failing to meet any of the Financial  Standards  contained in subsections 4.2.1,
4.2.2 and 4.2.4 hereof;

    1.33 "PERMITTED  ENCUMBRANCES"  shall have the meaning given to that term in
Section 3.3.8 below;

    1.34   "PERSONS"   shall  mean  and  refer  to  any  and  all   individuals,
corporations,  partnerships, joint stock associations, business or other trusts,
governments or any agencies or subdivisions  thereof,  joint  ventures,  limited
liability   companies  or  partnerships,   or  other  entities  or  associations
whatsoever;

    1.35 "REPORTING  REQUIREMENTS"  shall have the meaning given to that term in
Section 4.1 below; 

    1.36 "REVOLVING LINE OF CREDIT" shall have the meaning given to that term in
Section 2.1 below; 

    1.37  "TANGIBLE  NET  WORTH"  shall have the  meaning  given to that term in
Section 4.2.5(b) below;

    1.38  "TOTAL  DEBT"  shall  have the  meaning  given to that term in Section
4.2.5(a) below;

    1.39 "UCC" shall mean the Uniform  Commercial Code as in effect from time to
time in The Commonwealth of Massachusetts;


                                      -4-



    1.40 The following terms shall have the respective meanings ascribed to them
in the UCC: "ACCOUNT DEBTOR",  "CHATTEL PAPER",  "DEPOSIT ACCOUNT",  "DOCUMENT",
"FARM PRODUCTS", "GENERAL INTANGIBLES", and "INSTRUMENT";

    1.41 Terms defined  elsewhere in this  Agreement  shall have the  respective
meanings ascribed to them where so defined;

    1.42 All  exhibits  to this  Agreement  are  hereby  incorporated  herein by
reference;

    1.43 The use of the  singular of terms which are defined in the plural shall
mean and refer to any one of the matters or items  included in such  definition;
and

    1.44 Use of the  connective  "or" is not intended to be exclusive;  the term
"may not" is intended to be prohibitive  and not  permissive;  use of "includes"
and  "including"  is intended to be  interpreted as expansive and amplifying and
not as limiting in any way; and pronouns  used herein shall be deemed to include
the singular and the plural and all genders.


                                    SECTION 2

                    ESTABLISHMENT OF REVOLVING LINE OF CREDIT

    2.1  Revolving  Line of Credit.  Subject to all of the terms and  conditions
contained in this  Agreement  and the other  Financing  Instruments,  the Lender
hereby agrees to establish  for the benefit of the Borrower a certain  revolving
line of credit (the "REVOLVING LINE OF CREDIT"), in the maximum principal amount
of up to the Line of Credit  Maximum  Amount,  as  evidenced  by and  payable as
provided in the Note.  All advances of  principal  under the  Revolving  Line of
Credit  (each  such  advance  is  hereinafter   referred  to  as  a  "LOAN"  and
collectively  as the "Loans") shall be made in accordance with the provisions of
this Agreement and the Note.  The Lender has opened or hereby opens,  for and in
the name of the Borrower,  loan accounts for the purposes of  administering  the
Loans.

    2.2 Interest Rate on Loans. The principal amount  outstanding,  from time to
time, of each of the Loans shall bear interest in accordance with the provisions
of the Note.

    2.3 Repayment of Loans. Principal and interest under the Loans shall be paid
to the Lender in accordance with the provisions of the Note.

    2.4 Facility  Fee.  The Borrower  agrees to pay to the Lender a Facility Fee
(the  "FACILITY  FEE") of  one-quarter  of one  percent  (.25%) per annum of the
amount which  equals the average  unused  portion of the Line of Credit  Maximum
Amount during each  calendar  quarter,  or part  thereof,  that any Loan remains
outstanding.  The  Facility Fee shall be paid by the Borrower to the Lender on a
calendar  quarterly  basis,  in arrears.  The  Facility Fee shall be earned when
paid,  non-refundable  and in addition to all interest and all other amounts due
and payable  with respect to the Loans or  otherwise  pursuant to the  Financing
Instruments.

    2.5 Use of  Proceeds.  All of the  proceeds  of the  Loans  shall be used to
finance Investments in Permitted  Acquisition Ventures and for general corporate
purposes,  including,  but not limited to, working capital, capital expenditures
and equipment leasing.

    2.6 Loan Advances. After the date hereof, Loans shall be made by advances by
the Lender to one or more of the accounts maintained by the Borrower pursuant to
Section 3.2.6 hereof (hereafter,  the "Main Operating Account").  Subject to the
terms and  conditions  hereof,  the Lender may make Loans to the Borrower (i) to
cover checks drawn by Borrower on the Main  Operating  Account and (ii) to cover
other authorized  charges whether given


                                      -5-




to the Lender  orally,  telephonically  or in writing  and (iii) to cover  other
charges due and payable hereunder.  As an accommodation to the Borrower,  and to
avoid the  necessity  that the Lender  communicate  with the Borrower  each time
checks are  presented  for  payment  against  the Main  Operating  Account,  the
Borrower requests the Bank to make a Loan charged to the Loan Account sufficient
to cover checks and other authorized  charges on each occasion that the same are
presented.   All  actions  of  the  Lender  in  connection   with  the  ordinary
administration  of the foregoing are hereby  ratified and confirmed and shall be
conclusive and binding upon the Borrower. Each request by the Borrower to Lender
for  an  advance  under  the  Revolving  Line  of  Credit  shall   constitute  a
representation  by the Borrower  that as of the date of such request (a) each of
the  representations  and warranties set forth herein are true, (b) the Borrower
is in compliance with all of the covenants, terms and conditions hereof, and (c)
no event or  circumstances  exist which  constitute or with the lapse of time or
notice,  or both,  would  constitute or result in the  occurrence of an Event of
Default (as hereinafter defined).

    2.7 Other Advances and Payments.  Whether or not the entire amount available
under the  Revolving  Line of Credit  shall  have  been  advanced  to or for the
benefit  of the  Borrower,  and  whether or not the Loans  shall be payable  (by
maturity or by  acceleration)  or an Event of Default shall have occurred  under
this Agreement, the Lender shall be entitled (but shall not be obligated and may
not be required) to make, at its sole discretion,  additional advances from time
to time:

                  2.7.1 in payment or reimbursement,  as the case may be, of any
         and  all  payments  made  or  amounts  owing   pursuant  to  applicable
         provisions of the Financing Documents;

                  2.7.2 to pay the Lender's usual and customary  charges for (a)
         services rendered by it to the Borrower at the Borrower's request which
         charges relate to the Obligations;  and (b) charges otherwise  required
         to be paid by the Borrower pursuant to this Agreement; and

                  2.7.3  otherwise  to or for the  benefit of the  Borrower,  as
         requested  or consented  to by the  Borrower,  as the Lender may in its
         discretion deem proper or expedient;

and each such additional advance shall be a part of the Obligations and shall at
all times be subject to the terms and  conditions of this  Agreement and secured
as provided in the Financing Instruments.

    2.8 Loan  Statements.  All  advances to or for the  benefit of the  Borrower
pursuant  to this  Agreement  shall be charged to the loan  account or  accounts
opened in the Borrower's  name on the Lender's  books.  The Lender  periodically
shall  render to the  Borrower  statements  of such loan  account  or  accounts,
setting  forth the daily loan  balance  and total  accrued  interest  during the
subject  period,  which,  when so  rendered,  shall be  considered  prima  facie
evidence  of the  correctness  thereof  except  to the  extent  that the  Lender
receives  written  notice of any  exceptions  proposed by the Borrower  within a
reasonable  time,  but in no event later than one hundred twenty (120) days from
the date of such statement. If for any reason the Borrower has not paid interest
charges and/or any fees for services, expenses incurred or other charges owed to
the Lender by the Borrower, the Lender, at its option and discretion, may at any
time or times debit such  charges,  expenses,  and fees to the  Borrower's  loan
account and such amounts shall be added to the principal amount thereof,  or the
Lender  may  debit  such  interest,  charges  and  fees,  and any  other  unpaid
Obligations  then due,  to any deposit or other  account of the  Borrower at the
Lender.  Such debits shall not constitute a waiver of any Event of Default.  Any
item received in payment towards the Borrower's  outstanding  indebtedness which
requires  clearance or payment  shall not be  considered  to have been  credited
until final clearance and final payment.

    2.9 Review of Line of Credit.  The Lender agrees (a) to review the Revolving
Line of Credit annually on or before June 30 of each year commencing in 1998, to
determine  whether  the  Maturity  Date  will  be  extended  for  an  additional
twelve-month  period beyond the Maturity Date then in effect;  and (b) to notify
the Borrower of such  determination in accordance with the notice  provisions of
the Agreement. Notwithstanding the foregoing, any


                                      -6-




determination by the Lender to extend the Maturity Date shall not be binding and
enforceable  against the Lender until the execution of an Extension Agreement or
other appropriate documentation, executed by the parties hereto.


                                    SECTION 3

                    REPRESENTATIONS, COVENANTS AND WARRANTIES

    In addition to such other  representations,  covenants and warranties as are
contained herein, or elsewhere in the Financing Instruments or as have otherwise
been made to the Lender, the Borrower hereby represents,  covenants and warrants
that:

    3.1  General Representations, Covenants and Warranties.

                  3.1.1  Business;   Supplemental   Information   Regarding  the
         Borrower.  BBI is  engaged in the  business  of  assaying,  processing,
         manufacturing,  selling,  and distributing human blood-based  products;
         BTRL is engaged in the business of biomedical and biotechnical contract
         research  and  services;  BBICL is engaged in the business of providing
         clinical reference laboratory  services;  BSS is, or will be, primarily
         engaged in the  business of  developing  clinical  instrumentation  and
         biomedical devices for the in vitro diagnostic industry;  each of BBI's
         and BSS's principal  place of business and chief  executive  office and
         mailing  address  is located  at the  Notice  Address  set forth at the
         beginning of this  Agreement;  BTRL's  principal  place of business and
         mailing  address is the  address  of the  Maryland  Office and  BBICL's
         principal  place of business and mailing  address is the address of the
         Connecticut  Office.  The  Borrower  does not and will not  conduct any
         business under any trade name or trade style other than the legal names
         of BBI, BTRL, BBICL and BSS or as set forth in the Master Exhibit.  Set
         forth in the Master Exhibit attached hereto are the names and addresses
         of the  respective  officers  and members of the Board of  Directors of
         each Borrower, the name and title of each officer authorized to execute
         the Financial Instruments and thereafter deal with the Lender on behalf
         of the Borrower,  and locations of all the  Borrower's  other places of
         business or at which the Borrower's  properties may be kept or located,
         which information is true,  accurate and complete;  the Borrower agrees
         to furnish the Lender with written  notice  within ten (10) days of any
         changes in such information, or any additional information necessary to
         insure that said Master  Exhibit  remains true,  accurate and complete.
         Nothing  in this  subsection  3.1.1  shall be  construed  to permit any
         action  which is otherwise  restricted  or  prohibited  pursuant to the
         terms of this Agreement.

                  3.1.2 Due Organization and Existence;  Authorization.  Each of
         BBI, BTRL, BBICL and BSS (a) is duly organized, validly existing and in
         good standing under the laws of the Commonwealth of Massachusetts,  (b)
         has adequate  corporate  power and authority to own its  properties and
         assets  and to  carry  on its  business  activities  as and  where  now
         conducted, (c) is qualified to do business as a foreign corporation and
         is in good standing in each jurisdiction  wherein such qualification is
         necessary,  and where the  failure to so qualify  would have a material
         adverse effect on the business or property of the Borrower, and (d) has
         the  corporate  power and  authority to execute and deliver such of the
         Financing  Instruments  as have been executed by it, and to perform the
         Financing Instruments in accordance with the terms thereof.

                  3.1.3 Articles of Organization;  Stock;  Accurate Records. The
         Articles of  Organization  and all  amendments  thereto of each of BBI,
         BTRL,  BBICL and BSS have been duly filed and are in proper order.  All
         capital  stock  issued  by BBI,  BTRL,  BBICL  and  BSS  and  currently
         outstanding is properly issued, and all books and records of BBI, BTRL,
         BBICL and BSS,  including but not limited to, the minute book,  by-laws
         and books of account of each of BBI, BTRL,  BBICL and BSS, are accurate
         and up-to-date and will be so maintained.



                                      -7-



                  3.1.4 Binding Documents;  Violation of Other Agreements.  Each
         of BBI, BTRL,  BBICL and BSS has taken all steps required by applicable
         law to make this Agreement, and each of such Financing Instruments, its
         legal, valid and binding obligation enforceable, jointly and severally,
         in accordance with its terms,  and neither the execution,  delivery nor
         performance of this Agreement or any of the Financing Instruments is in
         violation  of any law, the  Articles of  Organization,  Bylaws or other
         organizational documents of it, or of any other agreement or instrument
         to which it is a party or by which it or any of its assets is or may be
         bound, and does not constitute a default under any of the foregoing, or
         result  in  the  creation  or  imposition  of a  Lien  upon  any of its
         properties or assets other than that in favor of the Lender.

                  3.1.5  Title To  Assets;  Security  Interests  and  Mortgages;
         Leases; Royalties; etc. The Borrower has title (and good, clear, record
         and  marketable  title  in the  case of real  property)  to all  assets
         reflected  in the  financial  statements  hereinafter  referred  to and
         delivered to the Lender,  and to all assets  acquired since the date of
         said  financial   statements  (other  than  those  assets  subsequently
         disposed  of in the  ordinary  course  of  business),  free of any Lien
         except  in  favor  of  the  Lender   and   except  for  the   Permitted
         Encumbrances.

                  3.1.6 Investments.  The Borrower has no Investment,  in equity
         or debt, other than short-term,  investment grade securities, including
         money market funds, except as disclosed in the Master Exhibit.

                  3.1.7 Litigation;  Outstanding Orders.  Except as disclosed on
         the  Master  Exhibit  attached  hereto,  there are no  actions,  suits,
         proceedings  or  investigations  pending  or, to the  knowledge  of the
         Borrower, any of its agents, servants or employees,  threatened against
         the Borrower or any of its  properties  in any court,  before any other
         tribunal  or  any  federal,  state,  municipal  or  other  governmental
         authority.  The Borrower is not in default with respect to any order of
         any court, or other tribunal or governmental authority.  The execution,
         delivery and  performance  of this  Agreement and each of the Financing
         Instruments  by the Borrower will not constitute a default of any order
         of any court, or any other tribunal or governmental authority.

                  3.1.8  Financial  Statements   Delivered.   The  Borrower  has
         furnished   to  the  Lender   its   financial   statements,   including
         consolidated  balance  sheet and statement of profit and loss as at and
         for the  fiscal  year  ended  December,  1995,  as audited by Coopers &
         Lybrand,  LLP. Said financial  statements  fairly present the financial
         position of the Borrower as at the dates thereof and said  statement of
         profit and loss fairly  presents the results of the  operations  of the
         Borrower for the fiscal years  indicated,  all in conformity  with GAAP
         consistently applied.

                  3.1.9 Other  Liabilities;  Tax  Returns;  No Adverse  Changes.
         Except as may be set forth in the Master Exhibit  annexed  hereto,  (a)
         the  Borrower  has  no  knowledge  of  any  contingent  obligations  or
         liabilities  of the Borrower for taxes or long-term  commitments  which
         are not shown in the  balance  sheets  included in said  statements  or
         noted  therein;  (b) the Borrower has filed all required tax returns or
         extensions  therefor  and has paid all  applicable  federal,  state and
         local taxes shown to be due (other  than taxes which may  hereafter  be
         paid  without  penalty)  and  the  Borrower  has  no  knowledge  of any
         deficiency or additional  assessment in connection  therewith for which
         no provision has been made on its books; (c) there has been no material
         adverse change in the business,  properties or condition  (financial or
         otherwise) of the Borrower since the date of the most recent  financial
         statement   referred   to  above  and  (d)  the   Borrower's   Taxpayer
         Identification   Numbers  are  04-2652826  (BBI),   04-3152484  (BTRL),
         04-3196246  (BBICL) and BSS has  applied for a Taxpayer  Identification
         Number,  which it will promptly  supply to the Lender when  available .
         The Borrower's  federal income tax returns have been prepared and filed
         for its fiscal year(s) stated in the Master Exhibit.

                  3.1.10 No Agency Between the Borrower and the Lender.  Nothing
         herein  contained  shall be construed to constitute the Borrower as the
         Lender's agent for any purpose whatsoever.



                                      -8-




                  3.1.11  Regulation  U. The Borrower  does not own, nor has any
         present  intention of  acquiring,  any "margin  security" as defined in
         Regulation  U (12  C.F.R.  Part 221) of the Board of  Governors  of the
         Federal Reserve System (herein called a "margin security"). None of the
         proceeds  of the Loans will be used,  directly or  indirectly,  for the
         purpose  of  purchasing  or  carrying  any margin  security  or for the
         purpose of reducing or retiring any  indebtedness  which was originally
         incurred  to  purchase  or carry a  margin  security  or for any  other
         purpose which might  constitute  this  transaction  a "purpose  credit"
         within the meaning of said Regulation U.

                  3.1.12  ERISA.  The  Borrower  has not  incurred  any material
         accumulated  funding  deficiency  within the  meaning  of the  Employee
         Retirement  Income  Security Act of 1974,  as amended,  or incurred any
         material   liability  to  the  Pension  Benefit  Guaranty   Corporation
         established  under such Act (or any successor  thereto under such Act),
         nor does the  Borrower  foresee  that it will  incur any such  material
         accumulated  funding deficiency or material liability in the future, in
         connection with any employee  benefit plan established or maintained by
         the Borrower.  The making of the Loans will not involve any  prohibited
         transaction  within  the  meaning  of the  Employee  Retirement  Income
         Security Act of 1974 or Section 4975 of the Internal  Revenue  Code, as
         amended.  There are no facts known to the Borrower which create,  or in
         the future may (so far as the  Borrower can now  foresee)  create,  any
         withdrawal or other liability of the Borrower under the  Multi-employer
         Pension Plan Amendment Act of 1980.

                  3.1.13 Necessary Permits and Licenses.  The Borrower possesses
         all franchises, rights, certificates,  variances, licenses, permits and
         other  authorizations,  consents and approvals from all administrative,
         regulatory or governmental bodies and all patents, trademarks,  service
         marks,  trade names,  copyrights,  licenses and other  rights,  in each
         case,  free from  burdensome  restrictions,  that are  necessary in any
         material  respect for the ownership,  maintenance  and operation of its
         business,  properties and assets,  and the Borrower is not in violation
         of any thereof in any material respect.

                  3.1.14 Governmental Approvals Not Required. Neither the nature
         of the  Borrower nor its  business or  property,  nor any  relationship
         between  or among  the  Borrower  and any  other  Person  is such as to
         require any consent, authorization, waiver, approval or other action by
         or any notice to or filing with any court or administrative, regulatory
         or  governmental  body,  including,   without  limitation,   government
         agencies,  offices and  instrumentalities  with which the  Borrower has
         contracts,  in  connection  with  the  execution  and  delivery  by the
         Borrower of this  Agreement or the other  Financing  Instruments or the
         fulfillment of or compliance by the Borrower  with, or the  enforcement
         by the Lender of, the terms and provisions hereof or thereof.

                  3.1.15  Adequate  Financing.  The  Borrower  has no  reason to
         believe  that the  proceeds  of the  Loans,  together  with such  other
         sources of funds as are now directly and  immediately  available to the
         Borrower,  will not be adequate to finance its business  operations for
         the term of the Loans.

                  3.1.16 No Event of Default. As of the date hereof,  there does
         not exist any Event of Default or any event  which,  but for the giving
         of notice or the lapse of time or both,  would  constitute  an Event of
         Default under this Agreement, any of the Financing Instruments or under
         the provisions of any instrument  evidencing  any  indebtedness  of the
         Borrower to any other Person.

                  3.1.17  Compliance  with Leases.  The Borrower enjoys peaceful
         and undisturbed  possession as lessee under all leases necessary in any
         material respect for the operation of its business or of its properties
         and  assets,   none  of  which  contains  any  provisions  which  might
         materially  affect or impair  the  operation  of its  business  or such
         properties and assets. All such leases are valid and subsisting and are
         in full force and effect.


                                      -9-



                  3.1.18  President  and Chief  Executive  Officer.  Richard  T.
         Schumacher  shall  continue to perform  the  traditional  functions  of
         President  and  chief  executive  officer  of the  Borrower  and  shall
         continue to exercise  the  traditional  authority of such  officer.  In
         addition, while any Obligations remain outstanding,  BBI shall continue
         to own one hundred percent (100%) of the issued and outstanding capital
         stock of BTRL, BBICL and BSS.

                  3.1.19 Compliance with Certain Environmental Laws. Neither the
         Borrower, nor any Person for whose conduct the Borrower is responsible,
         owns, occupies or operates,  or has ever owned,  occupied or operated a
         site or vessel on which has been stored any hazardous  material or oil,
         without   compliance  with  all  statutes,   regulations,   ordinances,
         directives,  and orders of every  federal,  state,  municipal and other
         governmental  authority  which  has  or  claims  jurisdiction  relative
         thereto  (the  terms  "site",   "vessel",   and  "hazardous  material",
         respectively,  as used herein include the definitions of those terms in
         Massachusetts  General Laws,  Ch. 2lE);  neither the Borrower,  nor any
         Person for whose conduct the Borrower is responsible, has ever disposed
         of,  transported,  or  arranged  for  the  transport  of any  hazardous
         material or oil without compliance with all such statutes, regulations,
         ordinances,  directives,  and orders; and neither the Borrower, nor any
         Person for whose  conduct the  Borrower is  responsible,  has ever been
         legally  responsible  for any  release  or  threat  of  release  of any
         hazardous  material or oil;  received  notification of any potential or
         known  release or threat of release of any  hazardous  material  or oil
         from any site or vessel owned, occupied or operated by the Borrower, or
         any Person for whose  conduct the  Borrower is  responsible,  or of the
         incurrence  of any expense or loss in connection  with the  assessment,
         containment,  or  removal  of any  release  or threat of release of any
         hazardous material or oil from any such site or vessel.

                  3.1.20 Recent Changes of Name or Structure.  Except for BBICL,
         the Borrower has not within the preceding  four (4) months  changed its
         name, identity or corporate structure.

                  3.1.21 Payment of Wages. The Borrower  represents and warrants
         that all currently  owed wages to employees  have been paid, and agrees
         and covenants that all wages to employees will be paid as and when due.

    3.2  Certain Affirmative Covenants.

                  3.2.1  Payment  of  Obligations.  The  Borrower  will duly and
         punctually pay or cause to be paid, and perform or observe, or cause to
         be performed or  observed,  as the case may be, all of the  Obligations
         and will pay and perform or observe, or cause to be paid,  performed or
         observed all other duties or liabilities of any kind of the Borrower to
         the  Lender,  under or as  provided in the  Financing  Instruments,  or
         otherwise by agreement or applicable law.

                  3.2.2  Books and  Records.  The  Borrower  will  maintain  its
         financial  books and records in an accurate,  up-to-date,  complete and
         standardized fashion in accordance with GAAP consistently  applied, and
         in  accordance  with  any  state  or  federal  regulatory  requirements
         applicable to the Borrower's business or activities.

                  3.2.3  Inspection.  The Borrower will, at all reasonable times
         during regular business hours, and upon reasonable advance notice, make
         available in its offices,  and shall allow the Lender,  at the Lender's
         expense  (unless a Default  shall have  occurred,  in which  event such
         activities shall be at the Borrower's  expense),  access to, all of the
         Borrower's  books and records for  inspection,  audit,  examination and
         copying  by the  Lender  and  the  Lender's  representatives,  and  the
         Borrower will, at all reasonable times, permit entry by the Lender upon
         the  Borrower's  premises,   including  the  Maryland  Office  and  the
         Connecticut  Office,  for purposes of inspection of the  properties and
         assets of the Borrower by the Lender and the  Lender's  representatives
         and agents.


                                      -10-



                  3.2.4 Commercial Purposes.  All advances under the Loans shall
         be used exclusively for the Borrower's business purposes and operations
         and shall not in any respect be used for personal,  family or household
         purposes.

                  3.2.5  Notice  of  Adverse   Matters.   The   Borrower   will,
         immediately  upon  learning  thereof,  report to the Lender all matters
         materially  adversely  affecting the  Borrower's  business or financial
         condition or assets or property,  including,  without  limitation,  any
         damage or destruction of any material  amount of the Borrower's  assets
         by fire or other casualty, whether or not insured against.

                  3.2.6 Principal  Lending  Business.  The Borrower will use the
         Lender  as its sole  lender  of  account  and  depository  for its main
         operating accounts (except for investment  accounts);  provided however
         that BTRL, BBICL and BSS may maintain  checking accounts at banks other
         than the Lender for  purposes of handling  their  accounts  payable and
         payroll.

                  3.2.7  Maintenance  of Corporate  Existence;  Compliance  with
         Laws.  The Borrower  will maintain and keep in full force its corporate
         existence and good standing and comply with all laws,  regulations  and
         orders  of the  United  States  and of any state or  states,  and other
         political subdivision thereof, and of any other governmental  authority
         which may have  jurisdiction  over the  Borrower or its  properties  or
         businesses.

                  3.2.8  Payment of Taxes and Filing of  Returns.  The  Borrower
         will pay when due all taxes,  including without limitation all real and
         personal  property  taxes,  assessments  and charges and all franchise,
         income,  unemployment,  old age benefit,  withholding,  sales and other
         taxes  assessed  against  it or any of its  properties,  and  otherwise
         payable  by it, at such  times and in such  manner as is  necessary  to
         prevent any penalty from accruing or any Lien or charge from  attaching
         to its  properties.  The Borrower  shall  prepare and file when due all
         federal,  state and local  tax,  informational  and other  governmental
         returns, reports,  extensions, and filings, as may be applicable to the
         Borrower.  The  provisions  of  this  subsection,  however,  shall  not
         preclude the Borrower from  contesting in good faith and by expeditious
         process any such tax,  and the Borrower  shall not be in default  under
         this subsection by reason of the existence of a Lien for taxes not then
         due, all provided that: (a) an adequate  reserve therefor is maintained
         on the books of the  Borrower;  (b) the  Lender  has been  notified  in
         writing by the Borrower of such contest; (c) the enforcement of any and
         all Liens for non-payment of such taxes is effectively  stayed; (d) the
         Lender is reasonably  satisfied that the Borrower has reasonable  basis
         for such contest or dispute; and (e) the Borrower shall immediately pay
         the full amount of such charges and claims in the event the  Borrower's
         contest or dispute is unsuccessful.

                  3.2.9  Maintenance  of Property and Assets.  The Borrower will
         safeguard, protect and preserve its property and assets for the benefit
         of the Lender,  will keep its property and assets free from any adverse
         lien, security interest or encumbrance, will keep all tangible property
         in good working order and repair, will preserve all beneficial contract
         rights,  will take commercially  reasonable steps to collect all of its
         Accounts,  and will not waste or destroy any of its  property or assets
         or any part thereof; and the Borrower will otherwise preserve, maintain
         and protect its rights and keep its property and assets in good repair,
         working order and condition,  and capable of  identification,  and make
         (or cause to be made) all  needful  and  proper  repairs  or  renewals,
         replacements,  additions and  improvements  thereto,  and shall use its
         assets only in the ordinary course of business.

                  3.2.10 Collection Costs;  Legal Fees; etc. The Borrower agrees
         to pay, and to reimburse the Lender, on demand, for all fees, costs and
         expenses (including, without limitation, attorneys' reasonable fees and
         expenses)  incurred  or paid  by the  Lender  in  connection  with  the
         preparation,   negotiation,   interpretation   or   amendment  of  this
         Agreement,  and of any or all of the Financing Instruments,  and of any
         other instrument, agreement or document executed and delivered pursuant
         thereto  or in  connection  therewith,  and for any and all such  fees,
         costs and  expenses  incurred  in  connection  with  collection  of the
         Obligations  or the



                                      -11-




         enforcement of the Lender's rights and remedies under this Agreement or
         any of the Financing  Instruments or otherwise against the Borrower, or
         in the defense of any action  against  the Lender  with  respect to the
         Lender's  rights or remedies in respect of any  Obligation;  and all of
         the  foregoing  fees,   costs,  and  expenses  shall  be  part  of  the
         Obligations  secured  by  this  Agreement,   and  the  other  Financing
         Instruments.

                  3.2.11 Insurance.  The Borrower will maintain insurance at all
         times with financially sound and reputable  companies as are reasonably
         satisfactory  to the Lender,  in such amounts and against such risks as
         are customarily  insured  against by businesses  operating in a similar
         line of business in a similar area, and consistent  with sound business
         practice,  in no event less than the greater of (a) the amount required
         to avoid coinsurance or (b) the total aggregate  outstanding  principal
         indebtedness  owing by the  Borrower to the Lender,  including  without
         limitation  casualty  insurance  covering the  Borrower's  property and
         assets against the hazards of fire, flood, sprinkler leakage, burglary,
         theft,  pilferage,  loss in transit,  those hazards covered by extended
         coverage,  and such other  hazards as the Lender may require,  all such
         insurance to be in such form,  for such periods and with such companies
         as shall be reasonably  acceptable to the Lender.  All premiums thereon
         shall be paid by the Borrower  and if the Borrower  fails to do so, the
         Lender  may  at  its  option  (but  without  obligation)  procure  such
         insurance and charge the cost to the Borrower's Main Operating Account;
         provided,  however,  that any such  payment  by the  Lender  shall  not
         constitute  satisfaction of the Borrower's  obligations with respect to
         payment  hereunder,  or a waiver by the  Lender of any Event of Default
         with respect to such non-payment.  In order to evidence compliance with
         the  insurance  coverages  required  under  this  Section  3.2.11,  the
         Borrower  shall  deliver  to the  Lender  one or more  certificates  of
         insurance for all such  casualty  insurance  policies and  endorsements
         thereto.  Annually thereafter,  the Borrower shall deliver certificates
         of such  insurance  coverages  to the Lender,  along with  satisfactory
         evidence   of   general   liability,   products   liability,   workmens
         compensation  and  other  insurance  coverage,  in form  and  substance
         satisfactory to the Lender.

                  3.2.12 Further  Agreements;  Compliance With Other Agreements;
         Payment of Other Obligations;  Tax Returns; Notice of Litigation and of
         Events of Default.

                  The Borrower will:

                           3.2.12.1  from time to time  execute  and  deliver or
                  cause to be executed and delivered,  and furnish to the Lender
                  such other agreements,  documents,  instruments or statements,
                  and do or cause to be done such  other  acts as the Lender may
                  reasonably  request,  to  effect,  confirm  and  secure to the
                  Lender all rights and  advantages  intended by this  Agreement
                  and the Financing Instruments;

                           3.2.12.2  comply with all leases,  and with all other
                  agreements to which the Borrower is a party if a default under
                  any such agreement could  materially  adversely  affect any of
                  the Borrower's property and assets;

                           3.2.12.3   generally   pay  all   other   debts   and
                  liabilities as they become due (except for liabilities,  other
                  than the Obligations,  being contested in good faith for which
                  adequate provision has been made on the books of the Borrower,
                  provided  that all  enforcement  proceedings  are  effectively
                  stayed  pending such contest) and not permit the  acceleration
                  of any indebtedness owed by the Borrower to any Person; and

                           3.2.12.4 give written notice to the Lender within ten
                  (10) days of the occurrence thereof of any litigation filed by
                  or against the Borrower  which claims in connection  therewith
                  exceed,  either  individually  or when  aggregated  with other
                  existing litigation filed by or against the Borrower,  the sum
                  of Twenty-Five Thousand Dollars ($25,000),  and the occurrence
                  or  existence  of  any  Event  of  Default  hereunder,  or the
                  existence of any  situation  or state of facts  which,  either
                  with  notice or 


                                      -12-




                  lapse of time,  or both would  constitute  an Event of Default
                  hereunder,  and the action the  Borrower has taken or proposes
                  to take with respect thereto, all provided that the receipt of
                  such notice shall not limit or impair, in any way the Lender's
                  rights hereunder.

          3.2.13  Certain Environmental Matters.  The Borrower shall:

                           3.2.13.1  not store  (except in  compliance  with all
                  laws,  ordinances,  and regulations  pertaining  thereto),  or
                  dispose of any hazardous material or oil on any site or vessel
                  owned,  occupied, or operated by the Borrower or by any Person
                  for whose conduct the Borrower is responsible;

                           3.2.13.2 neither directly nor indirectly transport or
                  arrange for the  transport  of any  hazardous  material or oil
                  except in compliance with all laws, ordinances and regulations
                  pertaining thereto;

                           3.2.13.3 provide the Lender with written notice:  (a)
                  upon the  Borrower's  obtaining  knowledge of any potential or
                  known  release,  or threat of  release,  in  violation  of any
                  federal,   state  or  local  law,   ordinance  or   regulation
                  pertaining  thereto,  of any  hazardous  material or oil at or
                  from any site or vessel  owned,  occupied  or  operated by the
                  Borrower,  or by any Person for whose  conduct the Borrower is
                  responsible  or whose  liability may result in any lien on any
                  Collateral;  (b) upon the Borrower's  receipt of any notice to
                  such  effect  from any  federal,  state or other  governmental
                  authority;  or (c) upon the Borrower's  obtaining knowledge of
                  any  incurrence  of any  expense or loss by such  governmental
                  authority in connection  with the  assessment,  containment or
                  removal of any hazardous  material or oil for which expense or
                  loss the  Borrower  may be liable or for which  expense a Lien
                  may be imposed on any Collateral.

                  3.2.14 Changes in Master Exhibit.  The Borrower shall promptly
         notify  the Lender in writing  of any  changes in or  additions  to the
         information set forth in the Master Exhibit.

                  3.2.15  Key  Man  Life  Insurance.  So  long  as  any  of  the
         Obligations  remain  outstanding,  the Borrower agrees to maintain life
         insurance  on the life of Richard  T.  Schumacher  providing  for a net
         payment  in cash upon the death of said  Richard  T.  Schumacher  in an
         amount  of not less  than One  Million  Dollars  ($1,000,000),  and the
         Borrower shall pledge or collaterally assign such policy or policies to
         the  Lender  and,  at all times,  maintain  such  pledge or  collateral
         assignment. Such insurance coverage shall include a disability rider in
         the full amount of such coverage. The Lender hereby agrees to review on
         an annual  basis such  obligation  to provide  such life  insurance  to
         determine whether to waive the same, which  determination shall be made
         in the Lender's sole discretion, and shall include consideration of the
         financial performance of the Borrower.

    3.3  General Negative Covenants.

                  3.3.1 Other Debt.  The Borrower will not issue any evidence of
         indebtedness   or  create,   or  incur,   assume,   guarantee,   become
         contingently  liable for or suffer to exist, any indebtedness in excess
         of an aggregate of Five Hundred Thousand Dollars ($500,000) (other than
         indebtedness  to the Lender)  outstanding at any one time,  without the
         prior  written  consent  of  the  Lender  which  consent  will  not  be
         unreasonably withheld or delayed; provided,  however, that the Borrower
         may incur  liabilities  which  are  incurred  or arise in the  ordinary
         course of the Borrower's  business,  including purchase commitments for
         materials and supplies, without the prior written consent of the Lender
         but shall  seek  consent  of the  Lender,  which  consent  shall not be
         unreasonably  withheld or delayed,  for liabilities incurred or arising
         with  respect to money  borrowed or for the  purchase or lease of fixed
         assets.  The  Borrower  shall  not  enter  into or  participate  in any
         agreement, arrangement or transaction with any Person without the prior
         written  consent  of the  Lender,  if the  effect  of  such  agreement,
         arrangement or transaction  has, or could reasonably be expected in the
         future  to have,  the  effect  of (i)  rendering  the  Borrower  either
         primarily  or  contingently   liable  for  any  indebtedness  



                                      -13-



         or other  obligation of any Person (ii)  transferring  any asset of the
         Borrower  to or  for  the  benefit  of  any  Person  (except  as may be
         otherwise expressly  permitted by this Agreement);  or (iii) subjecting
         any of the  Borrower's  property  or assets to any lien in favor of any
         third party  (other than  Permitted  Encumbrances),  including  but not
         limited to any creditor or obligee of any Person.

                  3.3.2  Payment of  Dividends.  The  Borrower  will not pay any
         dividends either in cash or kind on any class of its stock nor make any
         distribution  on  account  of their  stock,  nor  redeem,  purchase  or
         otherwise  acquire  directly or indirectly any of their stock,  without
         prior  written  notice to and written  consent of the Lender  except in
         compliance with this subparagraph 3.3.2.

                  3.3.3 Loans By the  Borrower.  Other than as  disclosed on the
         Master Exhibit,  the Borrower will not make any loan or advances to any
         Person, including, without limitation, its officers and employees.

                  3.3.4  Investments.  Without the prior written  consent of the
         Lender,  the Borrower  will not make any  Investments  other than short
         term,  investment grade  securities,  including money market funds, and
         other than Permitted Acquisition Ventures.

                  3.3.5 Mergers, etc. The Borrower will not merge or consolidate
         or be merged or  consolidated  with or into any other  Person,  or be a
         party to any  reorganization,  change in legal  structure  or any sale,
         lease, transfer or other disposition of all or substantially all of its
         assets.

                  3.3.6 Sales of Assets.  The Borrower will not sell,  lease, or
         dispose of any of its property or assets  except for sales of Inventory
         in the ordinary and usual course of its business,  and for Equipment no
         longer needed in the operation of its business, so long as the Borrower
         receives  therefor a sum  substantially  equal to such Equipment's fair
         value.

       3.3.7  Negative Pledge.  Without the prior written consent of the Lender,
    the Borrower will not:

                           3.3.7.1  grant,  create,  incur,  assume or suffer to
                  exist,  or permit any  Person,  whether by means of a power of
                  attorney or  otherwise,  to grant,  create,  incur,  assume or
                  suffer to exist, any Lien, upon or with respect to, any of the
                  Borrower's   property   or   assets   except   for   Permitted
                  Encumbrances; or

                           3.3.7.2 sign or file,  or permit any Person,  whether
                  by means of a power of attorney or otherwise, to sign or file,
                  under the Uniform  Commercial  Code of any  jurisdiction,  any
                  financing  statement which names the Borrower as a debtor,  or
                  sign,  or permit  any  Person,  whether by means of a power of
                  attorney  or  otherwise,   to  sign  any  security   agreement
                  authorizing   any  secured  party   thereunder  to  file  such
                  financing  statement,  except  in  connection  with  Permitted
                  Encumbrances; or

                           3.3.7.3 agree with any other Person that the Borrower
                  will  not   undertake   activities   prohibited   pursuant  to
                  sub-subsections 3.3.7.1 and 3.3.7.2 hereof.

                  To the extent that the  Borrower  violates the  provisions  of
         this subsection  3.3.7 by granting or assigning in favor of any Person,
         a Lien,  upon or with  respect  to, any of the  Borrower's  property or
         assets,  such Lien is hereby  deemed to be a Lien in favor of,  and for
         the sole benefit of, the Lender, until all of the Obligations have been
         paid in full, and in the event that any Person  receives any sums from,
         or as a result of, the sale,  liquidation or distribution of all or any
         portion of the  Borrower's  property or assets on account of such Lien,
         such sums are hereby  deemed to be held in trust by such Person for the
         sole  benefit of the  Lender,  and shall be promptly  delivered  to the
         Lender upon receipt,  and shall not be commingled  with any other funds
         of such Person.


                                      -14-




                  3.3.8 No Liens; Permitted Encumbrances.  The Borrower will not
         grant or assume or suffer to exist any Lien with  respect to any of its
         assets  or  property,  tangible  or  intangible,  whether  now owned or
         hereafter acquired,  except for Liens granted to the Lender pursuant to
         this  Agreement,  and  except  for  the  following  (collectively,  the
         "Permitted  Encumbrances"):  (a)  liens  in  respect  of  taxes,  fees,
         assessments and other governmental  charges not yet due and payable, or
         with respect to which the validity thereof is currently being contested
         in good  faith  by  appropriate  proceedings  in  accordance  with  the
         provisions of this Agreement;  (b) landlord's  liens in respect of rent
         not in  default  or Liens in  respect  of  pledges  or  deposits  under
         worker's compensation,  unemployment insurance, social security laws or
         similar  legislation  or in  connection  with appeal and similar  bonds
         incidental to litigation,  mechanics', laborers', and materialmen's and
         similar liens,  if the  obligations  secured by such liens are not then
         delinquent,  and liens securing statutory obligations incidental to the
         conduct of the business of the Borrower  which do not in the  aggregate
         materially  detract  from the value of the  property of the Borrower or
         materially  impair the use thereof in the operation of their respective
         businesses;  (c) judgment  liens which shall not have been in existence
         for a period  longer than thirty (30) days after the  creation  thereof
         (provided no foreclosure or execution action shall have been commenced)
         or if a stay of execution  shall have been obtained for a period longer
         than  thirty  days  after  the  expiration  of such stay  (provided  no
         foreclosure  or  execution  action  shall have yet been  commenced)  or
         judgment  liens for which the  Borrower has obtained a bond in favor of
         the  judgment  holder in the full  amount of the lien and which bond is
         otherwise satisfactory to Lender; (d) the security interests, mortgages
         or Liens, if any,  described in the Master Exhibit annexed hereto;  and
         (e) Liens otherwise permitted pursuant to Section 3.3.1 hereof.

                  3.3.9 Continuance of Business. The Borrower will not engage in
         any business other than the businesses in which it is currently engaged
         or a business reasonably allied thereto, and the Borrower will continue
         to conduct and operate its business actively and in good faith.


                                    SECTION 4

                        FINANCIAL AND REPORTING COVENANTS

    4.1 Reporting Covenants.  The Borrower agrees to provide the Lender with the
reports,  statements,  certificates and information set forth in this Section 4,
all of which are referred to as the "Reporting Requirements".

                  4.1.1  Quarterly  Financial  Statements.   The  Borrower  will
         furnish to the Lender,  within  forty-five (45) days after the close of
         each   calendar   quarter  of  its  fiscal   year,   consolidated   and
         consolidating   (except  the  last  in  each  fiscal  year)   financial
         statements, including balance sheets, and statements of profit and loss
         and statements of cash flows reflecting the financial  condition of the
         Borrower at the end of such  period and the  results of its  operations
         for such  period and for the period from the  beginning  of the current
         fiscal year to the end of such period, in comparative form with figures
         for the corresponding periods of the previous fiscal year,  accompanied
         by a certificate by the Borrower's chief financial officer or President
         to the  effect  that such  financial  statements  fairly  present  such
         financial  condition  and  results of  operations  as of the end of and
         during such  period,  in  accordance  with GAAP  consistently  applied,
         subject  only  to  year-end   adjustments  and  audit.  Such  quarterly
         statements may be furnished to the Lender in the form of the Borrower's
         quarterly filings with the Securities and Exchange  Commission  ("SEC")
         under the Securities  Exchange Act of 1934, as amended (the "'34 Act"),
         on Form 10-Q.

                  4.1.2 Annual Financial  Statements.  The Borrower will furnish
         the  Lender,  within  ninety  (90) days after the close of each  fiscal
         year,  consolidated and consolidating  financial statements,  including
         balance  sheets,  statements  of profit  and loss,  statements  of cash
         flows,  and statements of changes in shareholders'  equity,  reflecting
         the financial  condition of the Borrower at the end of such fiscal year
         and the results of its 


                                      -15-





         operations  during  such  fiscal  year (in each case  setting  forth in
         comparative form the corresponding figures for the preceding year) and,
         in the  case of the  consolidated  financial  statements,  audited  and
         reported  upon (in  form  generally  recognized  as  "unqualified")  by
         Coopers & Lybrand,  LLP,  or such other  independent  certified  public
         accountant of nationally  recognized  standing,  prepared in accordance
         with GAAP,  applied  consistently in the  preparation  thereof and with
         prior periods, and accompanied by a certificate by the Borrower's chief
         financial  officer or president that such financial  statements  fairly
         present such  financial  condition  and results of operations as of the
         end of and during  such  period;  together  with,  upon  request of the
         Lender,  an opinion of such  certified  public  accountant  that to its
         knowledge there has occurred no event which constitutes,  or which with
         the lapse of time or giving of notice or both would constitute an Event
         of  Default  hereunder,  or,  if the  contrary  appears  to be true,  a
         statement of such Event of Default and the nature thereof.  Such annual
         statements may be furnished to the Lender in the form of the Borrower's
         annual filings with the SEC under the '34 Act on Form 10-K.

                  4.1.3 Officer's Certificates.  The Borrower will, upon request
         of the Lender but in any event within  forty-five  (45) days of the end
         of  each  calendar   quarter,   deliver  to  the  Lender  an  officer's
         certificate   signed  by  its  President  or  chief  financial  officer
         certifying  that: (a) the signer has reviewed the relevant terms of the
         Financing Instruments and is familiar with the operations and financial
         condition  of the  Borrower;  and (b) there is in existence no Event of
         Default  described  in any of the  Financing  Instruments  and no event
         which,  with the  giving  of notice  or lapse of time,  or both,  would
         result in the  occurrence of an Event of Default and the Borrower is in
         complete  compliance  as of the  date  of  such  certificate  with  the
         Financial Standards, as demonstrated in such certificate.  In the event
         of a continuing Event of Default or a continuing  condition which, with
         the  giving of notice or lapse of time,  or both,  would  result in the
         occurrence  of an Event of  Default,  the  Borrower  shall note in such
         certificate the nature and period thereof and the action which has been
         taken, is being taken or is proposed to be taken with respect  thereto,
         provided  that no such notice,  action or proposed  action shall affect
         Lender's  rights  hereunder  with  respect  to any  Default or Event of
         Default. The form of officer's  certificate required by this subsection
         is attached to this Agreement as Exhibit 4.1.3.

                  4.1.4 Other  Information.  In addition to the  foregoing,  the
         Borrower will furnish the Lender from time to time with such  financial
         information and statements as the Lender may reasonably  request,  and,
         upon request of the Lender, with copies of all financial statements and
         financial  reports  that the Borrower  sends or makes  available to its
         members of its Board of  Directors  or to any  governmental  authority,
         together with copies of all  management  letters of substance and other
         reports of  substance  submitted  to the  Borrower  by its  independent
         accountants in connection  with any annual or interim audit;  and, upon
         request of the  Lender,  the  Borrower  will  authorize  and direct all
         accountants and auditors to exhibit and deliver copies of any financial
         statements, trial balances or other accounting records of any sort, and
         to disclose to the Lender any information  they may have concerning the
         Borrower's financial or business condition.  In addition,  the Borrower
         will furnish to the Lender,  promptly  after the same are  delivered to
         its stockholders or the SEC, copies of all proxy statements,  financial
         statements and reports as the Borrower  shall send to its  stockholders
         or as the Borrower may file with the SEC or any governmental  authority
         at any time having jurisdiction over the Borrower or any of them.


    4.2  Financial Standards.

    The  Borrower  shall  maintain  and observe all of the  following  financial
standards,  in each case  determined  and  classified  in  accordance  with GAAP
applied on a consistent  basis at the applicable  dates or during the applicable
time periods indicated in the following table (the "Financial Standards"):



                                      -16-


<TABLE>
<CAPTION>


                                       APPLICABLE DATE OR TIME                  APPLICABLE RATIOS
        FINANCIAL STANDARDS                   PERIOD                        OR MONETARY REQUIREMENTS
- ---------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                          <C>                              
4.2.1:  Consolidated Debt Service     Quarterly, at the end of    At least 1.75:1 (rounded to nearest hundredth),
Ratio                                 each quarter                tested on a rolling four-quarter basis
- ---------------------------------------------------------------------------------------------------------------------
4.2.2:  Consolidated Total            Quarterly                   Not to exceed 2.0:1 (in each case rounded to the
Liabilities: Tangible Net Worth                                   nearest hundredth)
Ratio
- ---------------------------------------------------------------------------------------------------------------------
4.2.3:  Tangible Net Worth            Annually                    At least $15,000,000 plus 50% of net profits for
                                                                  the fiscal year ended 12/31/96 and thereafter
                                                                  for each immediately preceding fiscal year for
                                                                  which the measurement is being taken; provided
                                                                  however that in the event of a Permitted
                                                                  Acquisition Venture, such requirement shall be
                                                                  reduced by the amount of goodwill associated
                                                                  with such Permitted Acquisition Venture.
- ---------------------------------------------------------------------------------------------------------------------
4.2.4:  Profitability                 Quarterly                   There can be no more than two consecutive fiscal
                                                                  quarters with Consolidated Net Income of less
                                                                  than zero
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>


                  4.2.5  As used in this Agreement:

                  (a) "Consolidated  Total  Liabilities"  means the aggregate of
         all liabilities of the Borrower for money  borrowed,  incurred from any
         source  and in any  manner  whatsoever,  all in  accordance  with GAAP,
         including  all  subordinated  debt,  plus  the  capitalization  of  all
         obligations on leases of real and personal property;

                  (b) "Tangible Net Worth" means the aggregate  tangible  assets
         of the  Borrower  after  excluding  the book  value  of all  Intangible
         Assets,  minus  the  amount of  aggregate  liabilities,  including  all
         deferred  income  taxes,  and  "Intangible  Assets"  shall  include all
         goodwill,   organizational  expense,  licenses,  patents,   trademarks,
         tradenames,  copyrights, capitalized research and development expenses,
         deferred  charges,  and all other  intangible  assets as  determined in
         accordance with GAAP consistently applied;

                  (c) "Consolidated Debt Service Ratio" means Adjusted Operating
         Cash Flow (as described on Exhibit 4.2.1  attached  hereto)  divided by
         Total Debt Service (as described on Exhibit 4.2.1 attached hereto).

                  (d) "Consolidated Net Income" means for any fiscal period, the
         consolidated  gross revenues of the Borrower for such period,  less all
         expenses  and other proper  charges  (including  taxes on income),  all
         determined in accordance with GAAP.


                                      -17-




                  4.2.6 Computation  According to GAAP. All of the terms used in
         the  foregoing  financial  covenants,  except to the  extent  otherwise
         specifically  defined  herein,  and all  computations  made  under  the
         foregoing covenants, shall in all respects be governed by and performed
         in accordance with GAAP consistently applied.

                                    SECTION 5

                              CONDITIONS OF CLOSING

    5.1  Conditions of Closing.  This  Agreement and all of the other  Financing
Documents shall become effective and be dated as of the date on which the Lender
has received all of the following  items,  each of which must be  completed,  in
both form and  substance,  acceptable  to the Lender in its sole but  reasonable
discretion (said date is hereinafter referred to as the "CLOSING DATE"):

                  (a) This Agreement (together with all of the Exhibits referred
         herein  attached  hereto)  and the  Note,  each as  executed  by a duly
         authorized  officer of the  Borrower  and  attested by the Clerk of the
         Borrower.

                  (b)  Assignments  of the  Key  Person  Life  Insurance  Policy
         referred  to in  subsection  3.2.15  above,  each as executed by a duly
         authorized  officer of the Borrower,  in favor of the Lender,  together
         with the original of such Policy;

                  (c) A Certificate  of Clerk of the Borrower,  certifying:  (i)
         the adoption by the Board of  Directors of the Borrower of  resolutions
         authorizing  and  approving  the  transactions   contemplated  by  this
         Agreement and all of the other Financing Instruments; (ii) the Articles
         of  Organization  of each  Borrower,  along with any and all amendments
         thereto, all as certified by the Massachusetts  Secretary of State; and
         (iii) the By-Laws of each  Borrower,  along with any and all amendments
         thereto;  and (iv) if not supplied on the Master Exhibit,  the name and
         signatures of the officers of the Borrower  authorized to sign, for and
         on  behalf  of the  Borrower,  this  Agreement  and  all  of the  other
         Financing Instruments.

                  (d) A  Certificate  of  Corporate  Legal  Existence  and  Good
         Standing for each Borrower, as issued by the Massachusetts Secretary of
         State.

                  (e) An  opinion  from  Counsel  for the  Borrower  in form and
         substance satisfactory to the Lender.

                  (f) Any and all  other  documents  and  information  which the
         Lender may  reasonably  requested in connection  with the  transactions
         contemplated   by  this  Agreement  and  all  of  the  other  Financing
         Documents.

    5.2 Date  References.  The  parties  hereto  acknowledge  and agree that all
references  contained  in the Note and all of the  other  Financing  Instruments
executed in connection with the  transactions  contemplated  herein to the words
"dated of even date herewith" shall mean and refer to the Closing Date.


                                    SECTION 6

                                EVENTS OF DEFAULT

    Notwithstanding  any provision to the contrary in any instrument  evidencing
any  Obligation,  the  occurrence  of any  one or more  of the  following  shall
constitute and mean an "Event of Default" under this Agreement:



                                      -18-





    6.1 Any statement, report, certificate,  representation or warranty, made or
furnished by the Borrower in, or in  connection  with the execution and delivery
of this Agreement or any of the Financing Instruments, or in compliance with the
provisions of this Agreement or any of the Financing  Instruments,  or otherwise
furnished to the Lender at any time, shall prove to have been false or erroneous
when made in any material  respect,  or omits or fails to state a material  fact
necessary  in order to make the  statements  contained  therein  or  herein  not
misleading;

    6.2 The Borrower  shall fail to make payment of the principal or interest on
the Loans when and as due;

    6.3 The Borrower shall fail to make payment of any other  Obligation  within
fifteen (15) days of the date when and as due;

    6.4 The Borrower shall fail to perform,  observe, comply with or satisfy any
covenant, agreement or condition contained in this Agreement (other than payment
of any  Obligation)  not cured  within  thirty  (30) days of the  earlier of (i)
notice by the Lender to the Borrower or (ii) actual knowledge by the Borrower of
the occurrence  thereof,  plus such  additional  time as may be required to cure
such default because of delays beyond the Borrower's control, if such default is
susceptible  of being  cured and if the  Borrower is acting in good faith and is
making diligent efforts to cure such default; provided,  however, that such cure
period  shall not exceed the  aggregate  of ninety (90) days and shall not apply
to: (a) any transfer or voluntary  encumbrance  of assets;  (b) any failure with
respect  to any  requirement  of the  Borrower  to give  notice to the Lender as
provided herein; (c) the Reporting  Requirements or the Financial Standards;  or
(d) any event  which is  otherwise  an Event of  Default  pursuant  to any other
subsections of this Section 6; and such cure period shall run concurrently with,
and not in addition to, any and all applicable  grace or cure periods  contained
in any of the other Financing Instruments;

    6.5 The Borrower  shall default in payment of (a) any  obligation  under any
lease which default could materially adversely affect the business operations of
the Borrower;  or (b) any obligation or  indebtedness to any other Person at any
time outstanding, continued for a period sufficient to cause the acceleration of
the maturity of such obligation or indebtedness  (whether or not such obligation
or indebtedness is actually  accelerated) and such acceleration could materially
adversely affect the business operations of the Borrower;

    6.6 Failure,  generally,  of the Borrower to pay its debts when due and such
failure  could  materially  adversely  affect  the  business  operations  of the
Borrower; or the taking of possession,  custody or control of, or the attachment
by judicial process of, or issuance of an injunction against, or creation of any
other Lien (other than in favor of the Lender) upon,  any part of the Borrower's
property or assets by any Person,  which action is not  dissolved  within thirty
(30) days;

    6.7  The Borrower:

                  6.7.1 files a voluntary  petition  in  bankruptcy  (which term
         includes any action under Title 11 of the United  States Code  entitled
         "Bankruptcy" and commonly referred to as the "Bankruptcy Code"); or

                  6.7.2  is adjudicated a bankrupt or insolvent; or

                  6.7.3 files any petition or answers  seeking or acquiescing in
         any    reorganization,    arrangement,    composition,    readjustment,
         liquidation,  dissolution  or similar  relief for itself  under any law
         relating to bankruptcy, insolvency or other relief for debtors; or

                  6.7.4 seeks or consents to or acquiesces in the appointment of
         any trustee, receiver, master or liquidator (or other similar official)
         of itself or of all or any substantial part of its property; or

                  6.7.5  makes  any  general   assignment  for  the  benefit  of
         creditors; or



                                     --19-





                  6.7.6  admits in writing to its general  inability  to pay its
         debts as they become due;

    6.8 Commencement of any bankruptcy,  insolvency,  or other creditor's relief
proceedings against, or entry by a court of competent jurisdiction of any order,
judgment or decree approving a petition filed against the Borrower,  seeking any
reorganization, arrangement, composition, readjustment, liquidation, dissolution
or similar relief under any present or future federal or state law or regulation
relating  to  bankruptcy,   insolvency,  or  other  relief  for  debtors,  which
proceeding,  order,  judgment or decree  remains  unvacated  or unstated  for an
aggregate  of thirty  (30) days,  whether or not  consecutive,  from the date of
entry thereof;

    6.9 A material portion of the Borrower's  assets shall be damaged by fire or
other casualty,  the restoration or replacement cost of which damage exceeds, in
the  aggregate,  the  amount  of  insurance  proceeds  readily  available  (less
applicable  deductibles  and plus capital in an amount  which,  in Lender's sole
discretion  (a) is  available  for such  purposes  and (b)  expenditure  of such
capital  for such  purposes is  appropriate  under the  circumstances)  for such
restoration or replacement;

    6.10 The issuance or  existence  of any  judgment or  judgments  against the
Borrower by any court of competent jurisdiction, or other governmental authority
of competent jurisdiction, aggregating in excess of One Hundred Thousand Dollars
($100,000)  in any fiscal year,  and not covered by  insurance,  not paid within
thirty (30) days of the date thereof;

    6.11 The loss, suspension or revocation of any governmental license required
or necessary in connection with the operation of the Borrower's business;

    6.12  Service of any process  upon the Lender  seeking to attach by means of
trustee  process any funds of the  Borrower or of any  Affiliate on deposit with
Lender, which attachment or process is not dissolved within thirty (30) days; or

    6.13 The  occurrence  of any change in the  Borrower's  condition or affairs
(financial or otherwise) that, in the Lender's reasonable  opinion,  impairs the
Lender's security or materially increases the Lender's risk under this Agreement
or the Financing  Instruments,  or the  occurrence of any event or  circumstance
with  respect to the  Borrower  such that the  Lender  reasonably  deems  itself
insecure.



                                    SECTION 7

                                    REMEDIES

    7.1 General  Remedies.  In addition to and without in any way  limiting  any
other rights and remedies  available to the Lender under this Agreement prior to
an Event of Default,  or any other rights and  remedies  available to the Lender
(whether  prior to or after an Event  of  Default)  under  any of the  Financing
Instruments or under applicable law or in equity,  upon and at any time or times
after the occurrence of any Event of Default hereunder:

                  7.1.1 the Lender may  declare  and cause all or any portion of
         the Obligations to be immediately due and payable;

                  7.1.2  the  Lender  may  decline  to honor  the  credit of the
         Borrower or may refuse to make further advances to the Borrower;

                  7.1.3  the  Lender  shall  have  the  right  to  apply  to the
         Obligations  any deposits or other sums at any time  credited by or due
         from the Lender to the Borrower; and



                                      -20-





                  7.1.4  the  Lender  may  treat  any or  all  of the  Financing
         Instruments  as  being in  default  and may  exercise  any  rights  and
         remedies thereunder as it shall deem appropriate.

    7.2 Cumulative Remedies.  The enumeration of rights and remedies herein, and
in each of the Financing Instruments, shall be cumulative and not exclusive, and
shall be in  addition  to,  and  shall not  exclusive  of,  any other  rights or
remedies the Lender may have,  whether under the UCC or other applicable law, or
in equity,  or otherwise.  The Lender shall,  in its  discretion,  determine its
choice of rights and  remedies  and the order in which they shall be  exercised,
and whether or not, and which,  Collateral  is to be proceeded  against,  and in
which order. The exercise of any right or remedy shall not preclude the exercise
of others.


                                    SECTION 8

                                     WAIVER

    8.1 Waiver By the Borrower. The Borrower hereby waives demand,  presentment,
protest and notice  thereof with respect to any and all  instruments,  notice of
acceptance  hereof,  notice of Loan or advances made,  credit  extended,  or any
other action taking in reliance herein, and all other notices and demands of any
kind except as expressly set forth herein.

    8.2 Lender's Option To Waive. The Lender may at its sole discretion,  at any
time and from time to time, waive any of the requirements or provisions  hereof,
or contained within any of the Financing  Instruments,  or any default hereunder
or under any of the Financing Instruments, but only by an express written waiver
signed by an  authorized  officer  of the  Lender;  no act other than an express
written waiver, nor any failure to act or delay by the Lender shall constitute a
waiver of any  requirement or provision of, or any default under,  or any of the
Lender's  rights or  remedies  under,  this  Agreement  or any of the  Financing
Instruments.  No single or partial waiver by the Lender of any provision of this
Agreement  or  any of the  Financing  Instruments,  or  any  breach  or  default
thereunder,  or of any right or remedy which the Lender may have,  shall operate
as a waiver of any other provision, breach, default, right or remedy, nor of the
same one on any future occasion.


                                    SECTION 9

                                  MISCELLANEOUS

    9.1 Deposits As Collateral; Set-Off. Any and all deposits, Deposit Accounts,
and other sums at any time credited by or due to the Borrower from the Lender or
any of its banking or lending  affiliates  or any lender acting as a participant
under any loan  arrangement  between the Lender and the Borrower,  and any cash,
certificates  of  deposit,  securities,  instruments,  documents,  policies  and
certificates of insurance, goods, Accounts, choses in action, Chattel Paper, and
other property of the Borrower in the possession or control of, or in transit to
or from, the Lender, or any of its banking or lending affiliates,  or any lender
acting as a participant  under any loan  arrangement  between the Lender and the
Borrower,  or any third party acting on the Lender's  behalf,  regardless of the
reason the  Lender,  or such other  party,  receives  or is to receive  the same
(whether  in  pledge,  or  for  safekeeping,  or  as  agent  for  collection  or
transmission   or   otherwise)   and   regardless  of  whether  the  Lender  has
conditionally  released the same, shall at all times constitute security for any
and all  Obligations,  and may be applied or set off against such Obligations at
any time, whether or not other collateral is available to the Lender.



                                      -21-





    9.2 Survival of Covenants; Binding Effect. All agreements,  representations,
covenants and warranties made by the Borrower in this  Agreement,  the Financing
Instruments,  or in any certificate or other document delivered to the Lender in
connection  herewith shall survive the termination of this Agreement and survive
the execution and delivery of this Agreement, and shall remain in full force and
effect until all Obligations to the Lender have been paid in full and satisfied,
and the security  interests and rights  granted to the Lender in any  collateral
and its rights and remedies hereunder and under the Financing  Instruments shall
continue in full force and effect  notwithstanding  the fact that the Borrower's
Loan  account may from time to time be in a zero or credit  position,  until all
Obligations have been satisfied.  All the terms and provisions of this Agreement
and the  Financing  Instruments  shall  be  binding  upon  and  inure  to and be
enforceable  by and against the parties hereto and their  respective  successors
and assigns.

    9.3 Termination of Agreement.

                  9.3.1  This  Agreement  shall  terminate  upon the  final  and
         irrevocable payment in full by the Borrower of the Obligations, or upon
         acceleration  of  the  Obligations   pursuant  to  the  terms  of  this
         Agreement.

                  9.3.2 The  termination of this Agreement  shall not affect any
         rights of the  Borrower or the Lender  arising  prior to the  effective
         date of such termination, as the case may be, and the provisions hereof
         shall continue to be fully  operative  until all  transactions  entered
         into,  rights created or Obligations  incurred prior to such occurrence
         or  termination  shall  have  been  fully  disposed  of,  concluded  or
         liquidated.   Upon  termination  of  this  Agreement,  all  Obligations
         (including,  without  limitation,  the Loans)  shall be due and payable
         without  notice or demand.  The  security  interests,  liens and rights
         granted to the Lender  hereunder  and under any  instrument or document
         delivered  pursuant hereto or in connection  herewith shall continue in
         full  force  and  effect,   notwithstanding  the  termination  of  this
         Agreement  or the fact that the  Borrower's  Accounts  may from time to
         time be temporarily in a credit position,  until all of the Obligations
         have   been   paid  in  full   after  the   termination   hereof.   All
         representations,   warranties,   covenants,   waivers  and   agreements
         contained herein shall survive the termination  hereof unless otherwise
         provided.

         Notwithstanding  the foregoing,  if after receipt of any payment of all
         or any part of the Obligations,  the Lender is for any reason compelled
         to surrender  such payment to any person or entity because such payment
         is  determined  to be void or voidable as a  preference,  impermissible
         setoff,  a  diversion  of trust  funds or for any  other  reason,  this
         Agreement shall continue in full force and the Borrower shall be liable
         to, and shall indemnify and hold the Lender harmless for, the amount of
         such payment  surrendered  until the Lender shall have been finally and
         irrevocably  paid in full.  The  provisions of the  foregoing  sentence
         shall be and remain effective notwithstanding any contrary action which
         may have been taken by the Lender in reliance  upon such  payment,  and
         any such  contrary  action so taken shall be without  prejudice  to the
         Lender's  rights under this  Agreement and shall be deemed to have been
         conditioned upon such payment having become final and irrevocable.

    9.4 Conflict of Terms. In the event of any conflict or contradiction between
or among any  provision or  provisions  of this  Agreement  and any provision or
provisions of any of the other  Financing  Instruments,  the  provisions of this
Agreement shall govern.

    9.5  Prior  Discussions;  Amendments  in  Writing;  Counterparts;  Filing As
Financing  Statement.   This  Agreement  and  all  other  Financing  Instruments
incorporate  all  discussions  and  negotiations  between the  Borrower  and the
Lender,  either express or implied,  concerning the matters  included herein and
therein,  any  custom  or  usage  to  the  contrary  notwithstanding.   No  such
discussions  or  negotiations  shall  limit,  modify,  or  otherwise  affect the
provisions  of the  Financing  Instruments.  This  Agreement  may be  amended or
modified only in writing  signed by the parties  hereto,  and in the case of the
Lender  signed by a duly  authorized  officer  thereof.  This  Agreement  may be
executed  in two or  more  counterparts,  each  of  which  shall  constitute  an
original,  but such  counterparts  together  shall  constitute  one and the same
instrument.



                                      -22-




    9.6 General  Indemnification.  The Borrower shall, and does hereby,  further
indemnify and save the Lender  harmless from any and all  liabilities,  damages,
costs,  losses and  expenses  (including,  without  limitation,  court costs and
attorney's reasonable fees and expenses) that the Lender may sustain or incur by
reason of, relating to or arising out of the  preparation of this Agreement,  or
in  collecting  or enforcing  the  Obligations,  or in enforcing any of Lender's
rights or remedies, or in the prosecution or defense of any action or proceeding
concerning any matter growing out of or connected  with this  Agreement,  any of
the Financing  Instruments,  or the  Obligations,  or on account of the Lender's
relationship  with the  Borrower  (each of which may be  defended,  compromised,
settled or pursued by the Lender with counsel of Lender's selection, at the sole
expense of the Borrower)  except for such claims which have been determined by a
court  of  competent  jurisdiction  to have  arisen  out of the  Lender's  gross
negligence or bad faith. The within indemnification shall survive termination of
this Agreement. The Borrower's obligations under this subsection constitute part
of the Obligations  secured by the security  interest  created by this Agreement
and by the other Financing Instruments.

    9.7  Destruction  of Documents;  Jurisdiction.  This Agreement and all other
Financing  Instruments  may be  reproduced  by the  Lender by any  photographic,
photostatic,  microfilm,  or similar  process,  and the Lender may  destroy  the
original from which any document was so reproduced.  Any such reproduction shall
be  admissible   in  evidence  as  the  original   itself  in  any  judicial  or
administrative  proceeding  (whether  or not the  original is in  existence  and
whether or not such  reproduction  was made in the regular  course of business).
The  Borrower  acknowledges  receipt of a true,  correct  and  complete  copy or
counterpart of this Agreement.

    9.8 Notices.

                  9.8.1 All notices or demands  hereunder to the parties  hereto
         shall be made in writing and shall be deemed to have been  sufficiently
         given for all purposes one business day after being sent by  recognized
         overnight  delivery service for next day delivery service,  on the same
         business day if delivered by hand and three  business  days after being
         sent by United States mail,  certified mail return  receipt  requested,
         first class,  postage  prepaid,  and  addressed to the parties at their
         respective  Notice  Addresses  set  forth  above,   together  with  the
         following additions: (a) for the Lender, "Attention: Commercial Banking
         Group" and (b) for the  Borrower,  "Attention:  Richard T.  Schumacher,
         President".  Either  of the  parties  may  change  its  Notice  Address
         hereunder  by  giving  notice  of such  change  to the  other  party in
         accordance with the provisions of this subsection.

                  9.8.2  Notwithstanding  any provision  herein to the contrary,
         the  Borrower  agrees that the failure or delay by the Lender in giving
         any  notice  or  statement  hereunder,  or any  inaccuracy  therein  or
         incompleteness  thereof,  shall  not in any way  alter  or  affect  the
         absolute  and  unconditional  obligation  of the  Borrower  to pay  and
         perform in full the  Obligations,  but any action taken or not taken by
         the Borrower as a direct result of such lack or delay of notice,  or of
         the Borrower's good faith reliance upon a material  inaccuracy  therein
         or the material  incompleteness  thereof, as the case may be, shall not
         in of itself, and to the extent thereof, constitute an Event of Default
         hereunder,  so long as the Borrower does not otherwise  have or receive
         notice or  knowledge  of the  material  contents or  substance  of such
         notice, or of the inaccuracy or incompleteness thereof, as the case may
         be, and the Borrower acts at all times in good faith.

    9.9  Application  of  Proceeds.  The  proceeds  of any  collection,  sale or
disposition  of the  Collateral,  or of any other payments  received  hereunder,
shall be applied  toward the  Obligations in such order and manner as the Lender
determines in its sole discretion,  any statute (the application of which may be
waived  or  modified   by   agreement),   customs  or  usage  to  the   contrary
notwithstanding.  The  Borrower  shall  remain  liable  to the  Lender  for  any
deficiency remaining following such application.

    9.10  Continuance of Defaults.  As used herein,  and in any of the Financing
Instruments,  upon any and each occurrence of an Event of Default, such Event of
Default  shall be deemed to continue  until cured by the Borrower in  accordance
with this Agreement (and the applicable provisions of the Financing Instruments,
as the case may be), 


                                      -23-





and until such time as the Borrower  requests  and receives  from the Lender the
Lender's written  acknowledgment that such Event of Default (as specified in the
request) has been cured and is no longer  continuing,  which  acknowledgment the
Lender shall not unreasonably withhold or delay.

    9.11  Severability.  If  any  provision  of  this  Agreement  or  any of the
Financing  Instruments,  or any portion of such  provision,  or the  application
thereof to any person or  circumstance,  shall to any extent be held  invalid or
unenforceable,  the remainder of this Agreement and the Financing Instruments or
the remainder of such provision and the application  thereof to other persons or
circumstances (other than those as to which it is held invalid or unenforceable)
shall not be affected  thereby,  and each term and  provision  hereof and of the
Financing  Instruments  shall  be  valid  and  enforced  to the  fullest  extent
permitted by law. To the extent  permitted by law, the parties  hereto waive any
provision of law which renders any such provision prohibited or unenforceable in
any respect.

    9.12  Headings.  Headings  appearing  in this  Agreement  are  intended  for
convenience only and do not constitute and shall not be interpreted to be a part
of this Agreement.

    9.13  Governing  Law;  Sealed  Instrument.  This  Agreement  is executed and
delivered in The  Commonwealth of  Massachusetts,  and for all purposes shall be
construed in  accordance  with and governed by the laws of The  Commonwealth  of
Massachusetts,  and shall  take  effect  as a sealed  instrument.  The  Borrower
submits  itself  to the  jurisdiction  of the  Courts  of  The  Commonwealth  of
Massachusetts for all purposes with respect to this Agreement and the Borrower's
relationship with the Lender.

    9.14  Force  Majeure.  The  Lender  shall not be  responsible  for delays or
failures in  performance  hereunder  resulting  from causes  beyond its control,
including without  limitation,  acts of God, strikes,  lockouts,  riots, acts of
war,  governmental   regulations,   fire,  communication  line  failures,  power
failures, earthquakes or other disasters.

    9.15 Interpretation of Agreement.  Should any provision of this Agreement or
the other Financing  Instruments require  interpretation or construction,  it is
agreed by the  parties  hereto  that the court,  administrative  body,  or other
entity  interpreting  or  construing  this  Agreement  or  the  other  Financing
Instruments  shall not apply a presumption that the provisions  thereof shall be
more strictly  construed against one party by reason of the rule of construction
that a document is to be construed more strictly against the party who itself or
through its agents  prepared the same,  it being agreed that the parties  and/or
their respective attorneys and agents have fully participated in the preparation
of all provisions of this Agreement and the other Financing Instruments.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]




                                      -24-




    EXECUTED  as an  instrument  under seal as of the day and year first  stated
above.

                                     Borrower:

Signed in the presence of:           BOSTON BIOMEDICA, INC.



______________________________       By:_________________________________
Witness                              Kevin W. Quinlan, Treasurer, hereunto duly
                                            authorized


                                     BTRL CONTRACTS AND SERVICES, INC.



                                     By:_________________________________
                                        Kevin W. Quinlan, Treasurer, 
                                        hereunto duly authorized



                                     BBI CLINICAL LABORATORIES, INC.



                                     By:_________________________________
                                            Kevin W. Quinlan, Treasurer,
                                            hereunto duly authorized

                                     BBI-SOURCE SCIENTIFIC, INC.



                                     By:_________________________________
                                            Kevin W. Quinlan, Treasurer,
                                            hereunto duly authorized




                                      -25-








                                     Lender:

                                     THE FIRST NATIONAL BANK OF BOSTON


                                     By:_________________________________
                                            G. Christopher Miller
                                               Vice President





PABOS2:SCS:28634_4



                                      -26-




                                                                   EXHIBIT 4.1.3

                        OFFICER'S COMPLIANCE CERTIFICATE

TO:      THE FIRST NATIONAL BANK OF BOSTON
         Bank of Boston-Worcester Tower
         100 Front Street
         Worcester, Massachusetts 01608-1438

         The  undersigned  authorized  officer  of  BBI,  BTRL,  BBICL  and  BSS
(together,  the "Borrower"),  hereby  certifies,  with respect to the Commercial
Loan Agreement  dated as of ___________ __, 1997 between The First National Bank
of Boston (the  "Lender") and the Borrower,  as amended  through the date hereof
(the "Loan  Agreement"),  that (a) the signer has reviewed the relevant terms of
the  Financing  Instruments  and is familiar with the  operations  and financial
condition  of the  Borrower;  and (b) there is in  existence no Event of Default
described  in any of the  Financing  Instruments  and no event  which,  with the
giving of notice or lapse of time, or both, would result in the occurrence of an
Event of Default, except as noted below, if any, and the Borrower is in complete
compliance  as  of  __/__/__  with  the  Financial  Standards  (the  "Applicable
Financial  Statements Date"), as demonstrated  below. All capitalized terms used
herein and not otherwise  defined shall have the meanings given them in the Loan
Agreement.

<TABLE>
<CAPTION>

                                   APPLICABLE DATE OR TIME              APPLICABLE RATIOS               ACTUAL AS OF 
      FINANCIAL STANDARDS                  PERIOD                    OR MONETARY REQUIREMENTS             __/__/__

<S>                               <C>                        <C>                              
Consolidated Debt Service Ratio    Quarterly, at the end of   Not to exceed  1.75:1  (in each case         ___:___ 
                                   each quarter               rounded to the nearest hundredth).

Consolidated Total                 Quarterly                  Not to exceed 2.0:1 (in each case            ___:___
Liabilities: Tangible Net                                     rounded to the nearest hundredth).
Worth Ratio

Tangible Net Worth                 Annually                   At least $15,000,000 plus 50% of net          $____________
                                                              profits for the fiscal year ended
                                                              12/31/96 and thereafter for each
                                                              immediately preceding fiscal year for
                                                              which the measurement is being taken,
                                                              subject to adjustment in the event of
                                                              acquisitions made by the Borrower in
                                                              the future, which adjustments shall
                                                              be determined by the Lender in its
                                                              sole judgment, reasonably exercised.

Profitability                                                 Quarterly There can be no more
                                                              than two consecutive fiscal
                                                              quarters with Consolidated Net
                                                              Income of less than zero.
</TABLE>

Comments Regarding Exceptions:

         Attached  hereto  are  financial  statements  as of and for the  fiscal
(quarter)(year)  ended on the Applicable  Financial  Statements Date, which have
been  certified  by the  undersigned  as  required  by  Section  4.1 of the Loan
Agreement.


                                      -27-



                                BOSTON BIOMEDICA, INC.



                                By:_________________________________
                                   Kevin W. Quinlan, Treasurer, hereunto duly
                                   authorized


                                BTRL CONTRACTS AND SERVICES, INC.



                                By:_________________________________
                                   Kevin W. Quinlan, Treasurer, hereunto duly
                                   authorized


                                BBI CLINICAL LABORATORIES, INC.



                                By:_________________________________
                                   Kevin W. Quinlan, Treasurer,
                                   hereunto duly authorized

                                BBI-SOURCE SCIENTIFIC, INC.



                                By:_________________________________
                                   Kevin W. Quinlan, Treasurer,
                                   hereunto duly authorized


DATE: ___________________



                                      -28-




                                                                   EXHIBIT 4.2.1










A.       OPERATING CASH FLOW ("OCF")

         Add: 1.       Earnings before interest and taxes (EBIT)
           2.       Depreciation and Amortization
           3.       Non-cash expenses
         Less:4.       Cash income taxes paid
           5.       Capital Expenditures (CAPEX)
           6.       Non-cash income
           7.       OCF               ___________________

B.       ADJUSTMENTS TO OCF ("Adjusted OCF")

         Add: 8.       Net Equity Raised (1)
           9.       Financed CAPEX (2)
           10.      Adjusted OCF      ___________________


C.       TOTAL DEBT SERVICE ("TDS")

           1.       Interest Expense
           2.       Required Payment of Long Term
                        Debt and Capital Leases
           3.       TDS              ___________________


Adjusted OCF/TDS = Debt Service Ratio


         Notes:

         (1)   "Net Equity  Raised" is equity  raised which is net of any equity
               used to finance acquisitions.

         (2)   "Financed  CAPEX"  is  bank/lease  debt used to  finance  capital
               purchases.





PABOS2:SCS:28634_5


                                      -29-






================================================================================





                            ASSET PURCHASE AGREEMENT

                ACQUISITION OF SUBSTANTIALLY ALL OF THE ASSETS OF

                             SOURCE SCIENTIFIC, INC.

                                       BY

                          BBI-SOURCE SCIENTIFIC, INC.,
                            a wholly owned subsidiary

                                       OF

                             BOSTON BIOMEDICA, INC.

                              DATED: MARCH __, 1997




================================================================================






                            ASSET PURCHASE AGREEMENT


                                TABLE OF CONTENTS

                                                                   Page

ARTICLE 1.  PURCHASE AND SALE OF ASSETS..............................4

   1.1 Sale of Assets................................................4
   1.2 Assumption of Liabilities.....................................4
   1.3 Purchase Price and Payment....................................6
   1.4 Adjustment to Purchase Price..................................6
   1.5 Time and Place of Closing.....................................7
   1.6 Delivery of Assumption of Liabilities.........................7
   1.7 Transfer of Subject Assets....................................7
   1.8 Delivery of Records and Contracts.............................7
   1.9 Change of Name................................................7
   1.10 Further Assurances...........................................7
   1.11 Tax Returns..................................................8
   1.12 Allocation of Purchase Price.................................8


ARTICLE 2.  REPRESENTATIONS AND WARRANTIES OF SELLER.................8

   2.1 Organization and Qualification of Seller......................8
   2.2 Capitalization of Seller......................................9
   2.3 Subsidiaries..................................................9
   2.4 Authorization of Transaction..................................9
   2.5 Present Compliance with Obligations and Laws..................9
   2.6 No Conflict of Transaction With Obligations and Laws.........10
   2.7 Financial Statements.........................................10
   2.8 Absence of Undisclosed Liabilities...........................10
   2.9 Absence of Certain Changes...................................11
   2.10 Payment of Taxes............................................12
   2.11 Title to Properties; Liens; Condition of Properties.........12
   2.12 Collectibility of Accounts Receivable.......................13
   2.13 Inventories.................................................13
   2.14 Intellectual Property Rights................................13
   2.15 Contracts and Commitments...................................15
   2.16 Labor and Employee Relations................................16
   2.17 Employee Benefits and ERISA.................................17
   2.18 Environmental Matters.......................................19
   2.19 Permits.....................................................21
   2.20 Warranty or Other Claims....................................21
   2.21 Litigation..................................................21
   2.22 Borrowings and Guarantees...................................21
   2.23 Financial Service Relations and Powers of Attorney..........21
   2.24 Insurance...................................................22
   2.25 Minute Books................................................22


                                      -i-





   2.26 Finder's Fee................................................22
   2.27 Transactions with Interested Persons........................22
   2.28 Absence of Sensitive Payments...............................22
   2.29 Disclosure of Material Information..........................23
   2.30 SEC Filings.................................................23


ARTICLE 3.  REPRESENTATIONS AND WARRANTIES OF BBI AND BUYER.........23

   3.1 Organization of BBI and Buyer................................23
   3.2 Authorization of Transaction.................................24
   3.3 No Conflict of Transaction With Obligations and Laws.........24
   3.4 SEC Filings..................................................24
   3.5 Litigation...................................................25
   3.6 Finder's Fee.................................................25


ARTICLE 4.  COVENANTS OF SELLER.....................................25

   4.1 Conduct of Business..........................................25
   4.2 Authorization from Others....................................26
   4.3 Breach of Representations and Warranties.....................26
   4.4 Consummation of Agreement....................................26
   4.5 Compliance with Securities Laws..............................27


ARTICLE 5.  COVENANTS OF BBI AND BUYER..............................27

   5.1 Authorization from Others....................................27
   5.2 Consummation of Agreement....................................27
   5.3 Disclosure of Adverse Change.................................27


ARTICLE 6.  CONDITIONS TO OBLIGATIONS OF BBI AND BUYER..............27

   6.1 Shareholder Authorization....................................27
   6.2 Dissenting Stockholders......................................28
   6.3 Representations; Warranties; Covenants.......................28
   6.4 No Material Adverse Change...................................28
   6.5 Opinion of Seller's Counsel..................................28
   6.6 Employment Contracts.........................................28
   6.7 Non-Competition Contracts....................................28
   6.8 Approval of Board of Directors...............................29
   6.9 Approval of Buyer's Counsel..................................29
   6.10 Absence of Certain Litigation...............................29
   6.11 FIRPTA Certificate..........................................29
   6.12 Consents and Waivers........................................29
   6.13 Escrow Agreement............................................29
   6.14 Convertible Debentures......................................29
   6.15 Opinion of Auditors.........................................30
   6.16 Opinion of Investment Banking Firm..........................30
   6.17 Due Diligence...............................................30
   6.18 Facility Lease..............................................30
   6.19 Reduction of Interest Payments..............................30
   6.20 Consents to Transactions....................................30
   6.21 Authorization...............................................30


                                      -ii-





   6.22 Bulk Sales Law..............................................30


ARTICLE 7.  CONDITIONS TO OBLIGATIONS OF SELLER.....................31

   7.1 Shareholder Authorization....................................31
   7.2 Representations; Warranties; Covenants.......................31


ARTICLE 8.  TERMINATION OF AGREEMENT................................31

   8.1 Termination..................................................31
   8.2 Right to Proceed.............................................31


ARTICLE 9.  RIGHTS AND OBLIGATIONS SUBSEQUENT TO CLOSING............31

   9.1 Survival of Warranties.......................................31
   9.2 Collection of Assets.........................................31
   9.3 Payment of Debts.............................................32


ARTICLE 10.  INDEMNIFICATION........................................32

   10.1 Definitions.................................................32
   10.2 Indemnification by Seller...................................32
   10.3 Indemnification by Buyer....................................33
   10.4 Defense of Third Party Actions..............................33
   10.5 Miscellaneous...............................................34
   10.6 Payment of Indemnification..................................34


ARTICLE 11.  MISCELLANEOUS..........................................35

   11.1  Fees and Expenses..........................................35
   11.2 Notices.....................................................36
   11.4 Publicity and Disclosures...................................36
   11.5 Non-Solicitation............................................37
   11.6 Confidentiality.............................................37
   11.7 Entire Agreement............................................37
   11.8 Severability................................................37
   11.9 Assignability...............................................37
   11.10 Amendment..................................................37
   11.11 Attorney-in-Fact...........................................37
   11.12 Governing Law; Venue.......................................38
   11.13 Counterparts...............................................38
   11.14  Effect of Table of Contents and Headings..................38




                                      -3-









                            ASSET PURCHASE AGREEMENT


      AGREEMENT  entered into as of the ____ day of  _____________,  1997, among
Boston Biomedica,  Inc., a Massachusetts corporation with its principal place of
business in West  Bridgewater,  Massachusetts  ("BBI"),  BBI-Source  Scientific,
Inc., a Massachusetts  corporation and wholly owned  subsidiary of BBI ("Buyer")
and Source Scientific,  Inc., a California  corporation with its principal place
of business in Garden Grove, California ("Seller").

                                    RECITALS:

      WHEREAS, Buyer wishes to acquire substantially all of the assets of Seller
and assume certain  liabilities and obligations of Seller,  and Seller wishes to
convey  such  assets to Buyer,  subject to such  liabilities  and subject to the
terms and conditions set forth in this Agreement;

      NOW, THEREFORE, in consideration of the mutual agreements contained herein
and for other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE 1.  PURCHASE AND SALE OF ASSETS.

1.1      Sale of Assets. 

                 (a) Subject to the  provisions of this  Agreement and except as
expressly  excluded in paragraph 1.1(b),  Seller agrees to sell and Buyer agrees
to  purchase,  at the Closing (as  defined in Section  1.5  hereof),  all of the
properties,  assets  and  business  of  Seller  of every  kind and  description,
tangible  and  intangible,  real,  personal  or  mixed,  and  wherever  located,
including  without  limitation all assets set forth on Schedule 1.1 hereto,  all
assets shown or  reflected on the Base Balance  Sheet (as defined in Section 2.7
hereof) of Seller and all assets  acquired or created by Seller in the  ordinary
course of business  and  consistent  with the terms hereof since the date of the
Base Balance  Sheet  through the Closing,  and all of Seller's good will and the
exclusive right to use the name of Seller as all or part of a trade or corporate
name. The assets, property and business of Seller to be sold to and purchased by
Buyer under this Agreement are hereinafter sometimes referred to as the "Subject
Assets."

                 (b) Seller's corporate franchise, stock record books, corporate
record books  containing  minutes of meetings of directors and  stockholders and
such other records as have to do exclusively with Seller's organization or stock
capitalization shall be excluded from the Subject Assets.

                  1.2    Assumption of Liabilities

                 (a) Upon the sale and purchase of the Subject Assets, except as
excluded in paragraph  1.2(b),  Buyer shall assume and agree to pay or discharge
when due the following:








                          (i) those  liabilities  of Seller  listed on  Schedule
1.2(a) hereto, as derived from the Base Balance Sheet;-

                          (ii) liabilities for accrued vacation and unreimbursed
expenses for the employees and to the extent set forth in Schedule 1.2(a); and

                          (iii) all  liabilities  and  obligations  incurred  by
Seller in the ordinary  course of business and consistent  with the terms hereof
since the date of the Base Balance  Sheet which are  outstanding  at the time of
the Closing.

The  liabilities  to be assumed by Buyer under this  Agreement  are  hereinafter
sometimes referred to as the "Assumed Liabilities."

                 (b) Except to the extent expressly  assumed pursuant to Section
1.2(a)  above,  Buyer  does not  assume  and shall  not be liable  for any debt,
obligation,  responsibility  or liability of the Seller,  or any  Affiliate  (as
defined  below),  or any claim  against any of the  foregoing,  whether known or
unknown,  contingent or absolute,  or otherwise.  Without limiting the foregoing
sentence,  Buyer shall have no  responsibility  with  respect to the  following,
whether or not disclosed in the Base Balance Sheet or a Schedule hereto:

                          (i) liabilities and obligations  related to or arising
from any transactions with any officer, director or stockholder of Seller or any
person or organization controlled by, controlling,  or under common control with
any of them (an "Affiliate");

                          (ii) liabilities and obligations for taxes of any kind
resulting from the operation of Seller  through the Closing and any  liabilities
and  obligations  for taxes of any kind related to or arising from the transfers
contemplated hereby;

                          (iii) liabilities and obligations for damage or injury
to person or property based upon events occurring prior to the date of Closing;

                          (iv)  liabilities  and  obligations  to  employees  of
Seller, whether for accident,  disability,  or workers compensation insurance or
benefits,  benefits under employee benefit plans, back pay, accrued vacation, or
obligations related to or resulting from severance of employment by Seller;

                          (v)  workmen's liens on any of the Subject Assets;

                          (vi) liabilities incurred by Seller in connection with
this Agreement and the transactions  provided for herein,  including counsel and
accountant's  fees, filing fees and expenses related to Seller's proxy material,
transfer and other taxes,  and expenses  pertaining  to its  liquidation  or the
performance by Seller of its obligations hereunder;







                          (vii)   liabilities   of  Seller  to  its   dissenting
stockholders,  if any to the  extent  holders of in excess of  one-half  percent
(0.5%) of the outstanding shares of capital stock of Seller exercise  dissenting
stockholder rights under the California General Corporation Law; and

                          (viii)  liabilities  of  Seller  with  respect  to any
options,  warrants,  agreements  or  convertible  or other rights to acquire any
shares of its capital stock of any class.

                 (c) The assumption of Assumed  Liabilities  by Buyer  hereunder
shall be  treated as  independent  of Buyer's  existing  business  and shall not
enlarge any rights of third parties under contracts or  arrangements  with Buyer
or Seller or any of their respective subsidiaries.  Nothing herein shall prevent
Buyer from contesting in good faith any of the Assumed Liabilities.

         1.3 Purchase Price and Payment.  In consideration of the sale by Seller
to Buyer of the Subject  Assets,  in addition to the  assumption by Buyer of the
Assumed  Liabilities,  Buyer agrees to pay to Seller and to the Escrow Agent, as
provided  hereafter,  the aggregate amount of Two Million One Hundred Forty-Four
Thousand Dollars  ($2,144,000) (the "Purchase Price"),  subject to adjustment as
provided  for in  Section  1.4 of this  Agreement,  which  shall be  payable  as
follows:

                 (a) the sum of One Million  Eight Hundred  Ninety-Four  Dollars
($1,894,000)  shall be paid at the Closing to Seller in cash, by certified check
or by federal funds wire transfer; and

                 (b) the sum of Two Hundred Fifty Thousand Dollars ($250,000.00)
in cash,  shall be  deposited  at the Closing  into an interest  bearing  escrow
account,  and held pursuant to an Escrow  Agreement,  in substantially  the form
attached hereto as Exhibit 1.3 (the "Escrow Agreement").

         1.4 Adjustment to Purchase  Price.  The Purchase Price shall be reduced
by One Dollar  ($1.00) for each One Dollar  ($1.00) that Seller's  tangible book
value as of the Closing Date, in accordance with generally  accepted  accounting
principles, is less than Five Hundred Thousand Dollars ($500,000). Tangible book
value shall be  determined by Seller to be Seller's  stockholders'  equity minus
all intangible  assets and is subject to verification by Buyer or, at the option
of Buyer, by Buyer's independent accountants, Coopers & Lybrand L.L.P. ("Coopers
& Lybrand") through an audit or certain procedures as determined by Buyer. Buyer
shall  furnish to Seller,  for Seller's  review and comment,  the results of any
audit or procedures  performed by Coopers & Lybrand.  Any results from Coopers &
Lybrand  shall be final and  binding  on the  parties  hereto.  In the event the
Purchase  Price is reduced as provided  herein,  the amounts of the reduction in
the  Purchase  Price  shall be paid to the Buyer out of the funds held in escrow
pursuant to the Escrow Agreement to the extent of the balance thereof, and shall
then be paid by the  Seller.  Any  amount  payable  to Buyer  as a  result  of a
Purchase  Price  adjustment  shall be paid to Buyer within five business days of
notice to Seller  either of Buyer's  verification  of  Seller's  calculation  of
Seller's  tangible  book  value or of  Coopers &  Lybrand's  results of audit or
certain procedures  performed in assessing the accuracy of Seller's  calculation
of Seller's tangible book value as of the Closing Date.







         1.5 Time and Place of  Closing.  The closing of the  purchase  and sale
provided for in this Agreement (herein called the "Closing") will be held at the
offices of Brown, Rudnick,  Freed & Gesmer, counsel to the Buyer, at its offices
at One Financial  Center,  Boston,  Massachusetts  on or before May 5, 1997 (the
"Closing  Date") or at such other place,  date or time as may be fixed by mutual
agreement of the parties.

         1.6 Delivery of Assumption of Liabilities.  At the Closing, Buyer shall
deliver or cause to be delivered to Seller,  among other things, an agreement to
assume the Assumed  Liabilities  having  substantially the provisions of Section
1.2 hereof and in substantially the form set forth as Exhibit 1.6 hereto.

         1.7 Transfer of Subject Assets. At the Closing, Seller shall deliver or
cause to be  delivered  to Buyer good and  sufficient  instruments  of  transfer
transferring  to Buyer title to all the Subject Assets  including a Bill of Sale
in  substantially  the form set forth as  Exhibit  1.7  hereto,  and such  other
instruments of transfer as Buyer may require.  Such  instruments of transfer (a)
shall be in the form  and will  contain  the  warranties,  covenants  and  other
provisions  (not  inconsistent  with the provisions  hereof) which are usual and
customary for transferring  the type of property  involved under the laws of the
jurisdictions  applicable to such transfers,  (b) shall be in form and substance
satisfactory to counsel for Buyer, and (c) shall  effectively vest in Buyer good
and  marketable  title to all the Subject  Assets,  free and clear of all liens,
restrictions  and  encumbrances  except  those  specifically  disclosed  in  the
Schedule  hereto or in the Base Balance  Sheet and which Buyer has agreed herein
may remain in place at and after Closing.

         1.8 Delivery of Records and  Contracts.  At the  Closing,  Seller shall
deliver or cause to be  delivered  to Buyer all of Seller's  leases,  contracts,
commitments  and  rights,   with  such  assignments   thereof  and  consents  to
assignments  as are  necessary  to assure Buyer of the full benefit of the same.
Seller  shall also  deliver to Buyer at the  Closing  all of  Seller's  business
records, tax returns, books and other data relating to its assets,  business and
operations (except corporate records and other property of Seller excluded under
Subsection  1.1(b)) and Seller  shall take all  requisite  steps to put Buyer in
actual  possession  and operating  control of the Subject Assets and business of
Seller. After the Closing,  Buyer shall afford to Seller and its accountants and
attorneys  reasonable  access to the books and  records of Seller  delivered  to
Buyer under this Section 1.8 and shall permit Seller to make extracts and copies
therefrom  for the  purpose of  preparing  such tax  returns of Seller as may be
required after the Closing and for other proper purposes approved by Buyer.

         1.9 Change of Name.  Immediately  following  the Closing,  Seller shall
file with the  California  Secretary  of State an  amendment  to its Charter (as
hereafter  defined) changing its name to a name which does not include the words
"Source Scientific." At the Closing, Seller shall deliver to the Buyer a consent
in form  satisfactory to the Secretary of State of  Massachusetts  consenting to
the use of the name "Source Scientific" by Buyer or any affiliate thereof.

         1.10 Further Assurances.  Seller from time to time after the Closing at
the request of Buyer and without further consideration shall execute and deliver
further  instruments of transfer






and assignment (in addition to those  delivered under Section 1.7) and take such
other action as Buyer may reasonably  require to more  effectively  transfer and
assign to, and vest in, Buyer all of its right, title and interest in and to the
Subject  Assets  free and  clear of all  liens and  encumbrances,  except  those
expressly  permitted  hereby.  To the extent that the  assignment  of any lease,
contract,  commitment  or right  shall  require  the  consent  of other  parties
thereto,  this Agreement  shall not constitute an assignment  thereof;  however,
Seller  shall  obtain  before the Closing any  necessary  consents or waivers to
assure Buyer of the benefits of such leases,  contracts,  commitments or rights.
Seller shall  cooperate with Buyer to permit Buyer to enjoy Seller's  rating and
benefits under the workman's  compensation  laws and  unemployment  compensation
laws of applicable jurisdictions,  to the extent permitted by such laws. Nothing
herein  shall be deemed a waiver by Buyer of its right to receive at the Closing
an effective assignment of each of the leases, contracts,  commitments or rights
of Seller.

         1.11 Tax Returns.  Seller,  with the  assistance and approval of Buyer,
shall  promptly  prepare  and file on or  before  the due date or any  extension
thereof (together with Buyer's payment for the amount of taxes, if any, shown to
be due thereon which constitute Assumed Liabilities) all required federal, state
and local tax returns with respect to Seller's  operations prior to the Closing.
Unless Buyer otherwise  requests,  Seller shall also take all necessary steps to
terminate its fiscal year for federal income tax purposes on the Closing date.

         1.12 Allocation of Purchase Price.  The purchase price payable by Buyer
for the  Subject  Assets  pursuant  to  Section  1.3 and the face  amount of the
Assumed  Liabilities assumed pursuant to Section 1.2 shall represent payment for
the  Subject  Assets at the prices  shown on a  memorandum  to be  prepared  and
initialed by the parties and  delivered at the Closing or as soon  thereafter as
required information is made available.  The prices reflected in said memorandum
shall represent the fair market values of the Subject Assets at the Closing,  to
the best of the  knowledge  and belief of the  parties  hereto,  and the parties
hereto  agree  that  they  will  not  take a  position  inconsistent  with  such
allocation for Federal income tax purposes.

ARTICLE 2.  REPRESENTATIONS AND WARRANTIES OF SELLER.

Seller hereby represents and warrants to Buyer as follows:

         2.1 Organization and  Qualification of Seller.  Seller is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of the
State  of  California,  with  full  power  and  authority  to own or  lease  its
properties  and to conduct its  business  in the manner and in the places  where
such  properties  are owned or leased or such  business is  conducted by it. The
copies of  Seller's  Certificate  of  Incorporation  or  equivalent  document as
amended to date ("Charter"), certified by the California Secretary of State, and
of Seller's by-laws as amended to date,  certified by Seller's Secretary (or the
equivalent),  and  previously  delivered  to Buyer's  counsel,  are complete and
correct.  Seller is duly  qualified to do business as a foreign  corporation  in
every jurisdiction in which such qualification is required.  The states in which
Seller is so qualified are listed on Schedule 2.1.








         2.2  Capitalization  of Seller.  The  authorized  capital  stock of the
Seller consists of 75,000,000  shares of common stock, no par value (the "Common
Stock"),  of which 34,540,004  shares are validly issued and outstanding,  fully
paid and non-assessable as of the date of this Agreement. Except as set forth on
Schedule 2.2 hereto,  there are no (a)  outstanding  warrants,  options or other
rights  granted  by  Seller  or,  to  Seller's   knowledge,   by  any  principal
stockholders of Seller (the "Principal  Stockholders"),  to purchase or acquire,
or pre-emptive rights with respect to the issuance or sale of, the capital stock
of Seller,  (b) other  securities of Seller  directly or indirectly  convertible
into  or  exchangeable  for  shares  of  capital  stock  of the  Seller,  or (c)
restrictions  on the transfer of Seller's  capital  stock.  For purposes of this
Agreement,  Principal  Stockholders shall include all stockholders of Seller who
hold, of record or  beneficially,  five percent (5%) or more of the  outstanding
shares of Seller's Common Stock.

         2.3 Subsidiaries

                 (a) Seller directly or indirectly owns the indicated amounts of
the issued and outstanding  capital stock of the corporations listed on Schedule
2.3  to  this  Agreement  (hereinafter  referred  to as  the  "Subsidiaries"  or
individually as a "Subsidiary"). The Seller has good and marketable title to the
shares of stock of each of the  Subsidiaries  which it owns, free of any adverse
claim, lien or restriction,  and there are no outstanding  options,  warrants or
other rights of any kind to acquire any additional shares of stock of any of the
Subsidiaries.

                 (b) Except as set forth on Schedule 2.3,  each  Subsidiary is a
corporation duly organized, validly existing and in good standing under the laws
of its state of incorporation, with full power and authority to own or lease its
properties  and to conduct its  business  in the manner and in the places  where
such properties are owned or leased or such business is conducted. The copies of
the Charter and by-laws of each Subsidiary as amended to date,  certified by the
Secretary  of State of the  state of  incorporation  of such  Subsidiary  or its
Secretary (or the  equivalent)  and previously  delivered to Buyer's counsel are
complete and correct.  Each of the Subsidiaries is duly qualified to do business
as a foreign  corporation in every  jurisdiction in which such  qualification is
required.

                 (c) Except as set forth on Schedule 2.3, neither Seller nor any
of  its  Subsidiaries   owns  any  securities   issued  by  any  other  business
organization  or  governmental  authority,  except U.S.  Government  securities.
Neither  Seller nor any of the  Subsidiaries  is a partner or participant in any
joint venture or partnership of any kind.

         2.4 Authorization of Transaction.  All necessary  action,  corporate or
otherwise, has been taken by Seller and the Stockholders,  if any such action is
necessary,  to  authorize  the  execution,  delivery  and  performance  of  this
Agreement and the  transactions  contemplated  hereby,  and the Agreement is the
valid and binding  obligation  of Seller,  enforceable  in  accordance  with its
terms.

         2.5 Present  Compliance with  Obligations and Laws.  Neither Seller nor
any Subsidiary is: (a) in violation of its Charter or by-laws; (b) in default in
the  performance  of any  material  obligation,  agreement  or  condition of any
material  debt  instrument  which  (with or without  the





passage  of time or the  giving of  notice)  affords  to any person the right to
accelerate any material  indebtedness  or terminate any material  right;  (c) in
default  or breach of (with or  without  the  passage  of time or the  giving of
notice) any other material contract to which it is a party or by which it or any
of the Subject  Assets are bound except as disclosed in Schedule 2.21; or (d) in
violation  of any  law,  regulation,  administrative  order  or  judicial  order
applicable to it or its business or the Subject Assets.


      2.6 No Conflict of Transaction  With Obligations and Laws. 

          (a) Neither the execution,  delivery or performance of this Agreement,
nor  the  performance  of  the  transactions   contemplated  hereby,  will:  (i)
constitute  a breach or  violation  of the  Charter  or by-laws of Seller or any
Subsidiary;  (ii) conflict  with or  constitute  (with or without the passage of
time or the giving of notice) a breach of, or default under, any debt instrument
to which Seller or any  Subsidiary  is a party,  or give any person the right to
accelerate  any material  indebtedness  or terminate any material  right;  (iii)
constitute  (with or without  the passage of time or giving of notice) a default
under or breach of any other  material  agreement,  instrument  or obligation to
which Seller or any  Subsidiary  is a party or by which it or any of the Subject
Assets  are  bound;  or (iv)  result  in a  violation  of any  law,  regulation,
administrative  order or judicial order  applicable to Seller or any Subsidiary,
or their businesses or the Subject Assets.

          (b) The execution,  delivery and performance of this Agreement and the
transactions  contemplated  hereby by the  Seller do not  require  the  consent,
waiver,  approval,  authorization,  exemption  of or  giving  of  notice  to any
governmental authority.

      2.7  Financial  Statements.  Attached  as  Schedule  2.7  hereto  are  the
following  audited   consolidated   financial   statements  of  Seller  and  its
Subsidiaries  and  unconsolidated  statements  of such  companies for the fiscal
years  ended  June  30,  1996  and 1995  and  unaudited  consolidated  financial
statements  for the six and three month periods  ended  December 31, 1996 all of
which  statements  are  complete  and correct and fairly  present the  financial
position of Seller and its  Subsidiaries  on a  consolidated  or  unconsolidated
basis,  as the case may be, on the date of such  statements  and the  results of
their operations on the applicable  basis for the periods covered  thereby,  and
such  financial  statements  have been  prepared in  accordance  with  generally
accepted  accounting  principles  consistently  applied  throughout  the periods
involved and prior periods.

     The Seller's  unaudited  balance  sheet as of December 31, 1996 included in
the above financial statements is sometimes referred to hereinafter as the "Base
Balance  Sheet."

      2.8 Absence of Undisclosed Liabilities. As of the date of the Base Balance
Sheet,  Seller and its Subsidiaries  had no material  liabilities of any nature,
whether accrued, absolute, contingent or otherwise (including without limitation
liabilities as guarantor or otherwise with respect to obligations of others,  or
liabilities  for taxes due or then  accrued or to become due),  except:  (a) the
Assumed  Liabilities;  (b) liabilities stated or adequately  reserved against on
the Base Balance Sheet;  and (c)  liabilities  disclosed in Schedule 2.8 hereto.
Since the date of the Base Balance  Sheet,  Seller and its  Subsidiaries  had no
material  liabilities of any nature,  whether accrued,  absolute,  contingent or
otherwise  (including without  limitation  liabilities as guarantor or






otherwise with respect to obligations of others, or liabilities for taxes due or
then  accrued  or to  become  due)  except  (a)  the  Assumed  Liabilities;  (b)
liabilities stated or adequately reserved against on the Base Balance Sheet; (c)
liabilities  in the aggregate not in excess of [$5,000]  arising in the ordinary
course of business;  and (d) liabilities disclosed in Schedule 2.8 hereto. There
is no fact which materially  adversely affects,  or may in the future (so far as
can now be  reasonably  foreseen)  materially  adversely  affect,  the business,
properties,  operations  or  condition  of  Seller  and  its  Subsidiaries  on a
consolidated  basis  which has not been  specifically  disclosed  herein or in a
schedule furnished herewith.

      2.9  Absence of Certain  Changes.  Except as  disclosed  in  Schedule  2.9
hereto,  since the date of the Base  Balance  Sheet there has not been:

          (a)  any  change  in  the  financial  condition,  properties,  assets,
liabilities, business or operations of the Seller or any Subsidiary which change
by itself or in conjunction with all other such changes,  whether or not arising
in the ordinary course of business,  has been materially adverse with respect to
Seller or any Subsidiary;

          (b) any contingent  liability  incurred by Seller or any Subsidiary as
guarantor or otherwise with respect to the obligations of others;

          (c) any mortgage,  encumbrance or lien placed on any of the properties
of Seller or any Subsidiary  which remains in existence on the date hereof or at
the time of Closing;

          (d) any  obligation or liability  incurred by Seller or any Subsidiary
other than  obligations  and  liabilities  incurred  in the  ordinary  course of
business;

          (e) any purchase, sale or other disposition, or any agreement or other
arrangement  for  the  purchase,  sale  or  other  disposition,  of  any  of the
properties  or assets of Seller or any  Subsidiary  other  than in the  ordinary
course of business;

          (f) any  damage,  destruction  or  loss,  whether  or not  covered  by
insurance, materially and adversely affecting the properties, assets or business
of Seller and its Subsidiaries on a consolidated basis;

          (g) any  declaration,  setting aside or payment of any dividend on, or
the making of any other distribution in respect of, the capital stock of Seller,
or any  Subsidiary  other  than a  wholly-owned  Subsidiary,  or any  direct  or
indirect redemption,  purchase or other acquisition by Seller of its own capital
stock or the stock of any such Subsidiary;

          (h) any labor  trouble or claim of unfair  labor  practices  involving
Seller or any Subsidiary;  any change in the  compensation  payable or to become
payable  by Seller or any  Subsidiary  to any of their  officers,  employees  or
agents  other than  normal  merit  increases  in  accordance  with  compensation
programs existing on the date of the Base Balance Sheet, or any bonus payment or
arrangement made to or with any of such officers, employees or agents;






          (i) any change with respect to the management or supervisory personnel
of Seller or any Subsidiary;

          (j) any payment or discharge of a material lien or liability of Seller
or any  Subsidiary  which was not shown on the Base Balance Sheet or incurred in
the ordinary course of business thereafter; or

          (k) any  obligation or liability  incurred by Seller or any Subsidiary
to any of their employees,  officers,  directors or shareholders or any loans or
advances made by Seller or any Subsidiary to any of their  employees,  officers,
directors or shareholders,  except transactions  between Seller and a Subsidiary
and normal compensation and expense allowances payable to officers.

      2.10 Payment of Taxes.  Except as disclosed on Schedule  2.10 hereto,  the
Seller and each of its Subsidiaries  have filed all federal,  state,  local, and
foreign  government  income,  excise and franchise tax returns,  real estate and
personal  property  tax  returns,  sales and use tax  returns  and all other tax
returns required to be filed by them, and they have paid all taxes owing by them
except  taxes  which  have not yet  accrued  or  otherwise  become due for which
adequate provision has been made in the pertinent financial  statements referred
to in Section 2.7 above.  All  transfer,  excise and other taxes  payable to any
jurisdiction  by reason of the sale and transfer of the Subject Assets  pursuant
to this Agreement  shall be paid or provided for by Seller after the Closing out
of the consideration payable by Buyer hereunder. Except as disclosed on Schedule
2.10 hereto,  the federal income tax returns of Seller and the Subsidiaries have
never been examined by the Internal Revenue Service and no extension of time for
the  assessment of  deficiencies  for any year is in effect.  The provisions for
taxes  reflected in the  above-mentioned  financial  statements  are adequate to
cover any tax  liabilities  of Seller  and any  Subsidiary  in  respect of their
respective  businesses,  properties and operations during the periods covered by
said financial  statements and all prior periods.  Neither the Internal  Revenue
Service nor any other taxing authority is now asserting or threatening to assert
against the Seller or any  Subsidiary  any  deficiency  or claim for  additional
taxes or interest  thereon or penalties in connection  therewith.

      2.11 Title to Properties; Liens; Condition of Properties.

           (a) Set forth on  Schedule  2.11  hereto is a listing  of (i) all the
real property  owned by Seller or any  Subsidiary  at the date hereof,  (ii) all
leases under which  Seller or any  Subsidiary  leases real  property at the date
hereof,  (iii) a complete  description  of the  machinery,  equipment  and other
personal  property  used or owned by  Seller  or any  Subsidiary  as of the date
hereof,  and (iv) all leases  under which  Seller or any  Subsidiary  leases any
personal  property  at the date  hereof.  Except as  specifically  disclosed  in
Schedule 2.11 or in the Base Balance  Sheet,  Seller and its  Subsidiaries  have
good and  marketable  title in fee  simple  to all of  their  real and  personal
property,  including  property  described in said schedule as owned,  and all of
their  leases are valid and  subsisting  and fully  assignable  by Seller or its
Subsidiaries (as the case may be) and no default exists under any thereof.





          (b) None of the real or personal  property  owned or used by Seller or
any  Subsidiary is subject to any mortgage,  pledge,  lien (other than for taxes
not  yet  due  and  payable),   conditional  sale  agreement,   security  title,
encumbrance or other charge,  except as specifically  disclosed in Schedule 2.11
or in the Base Balance Sheet.

          (c)  Except  as  otherwise specified in  Schedule  2.11 hereto:

             (i) all  buildings,  machinery  and  equipment  of Seller  and each
Subsidiary are in good repair, have been well maintained,  substantially conform
with all applicable ordinances, regulations and zoning or other laws, and do not
encroach on property of others,  and such  machinery  and  equipment  is in good
working order; and

             (ii) as of the date  hereof,  there  is no  pending  or  threatened
change of any such ordinance,  regulation or zoning or other law and there is no
pending or threatened condemnation of any such property.

      2.12 Collectibility of Accounts Receivable. All of the accounts receivable
of Seller and its  Subsidiaries  shown or reflected  on the Base Balance  Sheet,
less a reserve for bad debts in the amount shown on the Base Balance Sheet, are,
and those  existing at the time of Closing,  less the reserve  shown on the Base
Balance  Sheet,  will be, (a) valid and  enforceable  claims  which arose out of
transactions with  unaffiliated  parties,  (b) fully collectible  within 90 days
from  invoice date through the  Seller's  normal  means of  collection,  and (c)
subject to no set-off or counterclaim. 


      2.13  Inventories.  Except as set forth in  Schedule  2.13,  all  finished
goods, work in process and raw materials  contained in the inventories of Seller
and its Subsidiaries reflected on the Base Balance Sheet are, and those existing
at the Closing  will be, of a quality  and  quantity  saleable  in the  ordinary
course of the  business  of Seller and its  Subsidiaries  at  prevailing  market
prices  without  discounts.  Except as set forth in Schedule 2.13, all inventory
items shown on the Base  Balance  Sheet are,  and those  existing at the Closing
will be, priced at lower of cost (FIFO) or market,  and reflect  write-downs  to
realizable  values in the case of items which have become obsolete or unsaleable
(except at prices less than cost) through regular  distribution  channels in the
ordinary  course of the  business  of Seller  and its  Subsidiaries.  Subject to
write-downs complying with the preceding sentence, the values of the inventories
stated in the Base Balance Sheet reflect the normal inventory valuation policies
of Seller and its  Subsidiaries and were determined in accordance with generally
accepted accounting  principles,  practices and methods,  consistently  applied.
Purchase  commitments  for raw  materials  and parts are not in excess of normal
requirements,  and none are at prices  materially  in excess of  current  market
prices.  Sales  commitments  for  finished  goods are all at prices in excess of
prices used in valuing  inventory,  after  allowing  for selling  expenses and a
normal profit  margin.  Since the date of the Base Balance  Sheet,  no inventory
items have been sold or disposed of except through sales in the ordinary  course
of business at prices no less than  prevailing  market  prices,  and in no event
less than cost.

     2.14    Intellectual Property Rights.






          (a) For purposes of this Section 2.14, "Intellectual Property" means a
patent, patent application, trademark or service mark, trademark or service mark
application,  trade  name  or  copyright,  and  "Computer  Software"  means  all
information,  however embodied, with respect to information processing processes
and  programs,   including  software,   firmware,   databases  and  manuals  and
documentation with respect thereto.

          (b)  All  rights  of  ownership  of,  or  material  licenses  to  use,
Intellectual  Property or Computer Software held by the Seller or any Subsidiary
are listed on  Schedule  2.14.  There are no  Intellectual  Property or Computer
Software  rights,  other  than  those  set  forth on such  schedule,  reasonably
necessary  to the  conduct of the  business  of Seller and its  Subsidiaries  as
presently conducted.

          (c) Except as set forth on Schedule 2.14,  all rights to  Intellectual
Property  required  to be listed  in  Schedule  2.14 and in which  Seller or any
Subsidiary claims ownership rights:

             (i) have been duly registered in, filed in, or issued by the United
States Patent Office, United States Register of Copyrights, or the corresponding
offices of other countries identified on said schedule;

            (ii) have been properly  maintained  and renewed in accordance  with
all  applicable  laws and  regulations  in the United  States  and such  foreign
countries;

            (iii)  in the  case  of  copyrightable  works  of  authorship,  were
developed  and  authored as  original  works of  authorship  either by full time
employees of Seller or a  Subsidiary  within the normal scope of their duties as
works for hire, or by third  persons as works for hire under an express  written
obligation of assignment to Seller or a Subsidiary;

             (iv) are owned  exclusively  by Seller  or a  Subsidiary,  free and
clear of any attachments, liens, or encum brances; no other person has any right
or  interest  in or license to use or right to license  others to use any of the
Intellectual Property;

             (v)    are  freely transferable (except as otherwise
required by law); and

            (vi)    are  not  subject to any  outstanding  order,
decree, judgment or stipulation.

          (d) Except as set forth in Schedule 2.14, with respect to any Computer
Software used in or necessary to the business of the Seller and the Subsidiaries
and in which Seller or any Subsidiary claims ownership  rights,  Seller and each
Subsidiary have: (i) affixed in a timely manner  appropriate  copyright  notices
complying  with the  Copyright  Act of  1976,  as  amended,  and the  rules  and
regulations of the United States Copyright Office to all copies of such Computer
Software,  in object code form or any other form distributed to the public; (ii)
distributed such Computer Software only pursuant to written agreements  limiting
the use,  reproduction,  distribution and disclosure thereof,  and requiring the
licensees  to  preserve  the 







confidentiality  thereof  to an  extent  adequate  to  protect  Seller's  rights
therein;  and (iii)  disclosed  or made  available  the  source  code or systems
documentation  thereof  only to  employees  or  consultants  of the  Seller  who
required such disclosure or access for the business purposes of the Seller.

          (e) With respect to any Intellectual Property or Computer Software set
forth on Schedule  2.14 which Seller or any  Subsidiary  holds a license to use,
such  license  is  adequate  to the  conduct of the  business  of Seller and its
Subsidiaries as presently conducted.

          (f) No  proceedings  to which Seller or any Subsidiary is a party have
been  commenced  which (i) challenge  the rights of Seller or any  Subsidiary in
respect of the Intellectual Property or any Computer Software listed on Schedule
2.14, or (ii) charge Seller or any  Subsidiary  with  infringement  of any other
person's  rights in  Intellectual  Property  or Computer  Software;  and no such
proceeding  to which Seller or a Subsidiary  is not a party has been filed,  nor
are any such proceedings threatened to be filed.

          (g) To Seller's knowledge, none of the rights in Intellectual Property
or Computer  Software  listed on Schedule  2.14 is being  infringed by any other
person,   and  neither  Seller  nor  any  Subsidiary  is  infringing   upon  any
Intellectual Property or Computer Software rights of any other person.

         (h)  No  director,  officer  or  employee  of  Seller  or  any  of  its
Subsidiaries owns, directly or indirectly, in whole or in part, any Intellectual
Property  right which Seller or any of its  Subsidiaries  has used, is presently
using,  or the  use  of  which  is  reasonably  necessary  to  their  respective
businesses as now conducted.

          (i) In addition to the Intellectual  Property described above,  Seller
and each of its Subsidiaries have the right to use, free and clear of any claims
or rights of others  except  claims or rights  described in Schedule  2.14,  all
trade secrets,  customer lists,  manufacturing  secret  processes  (collectively
"Trade  Secrets")  required for or used in the  manufacture  or marketing of all
products formerly or presently produced by Seller or such Subsidiary,  including
products  licensed  from others.  The Seller and its  Subsidiaries  have adopted
measures  adequate  to  protect  their  Trade  Secrets.  Copies  of all forms of
confidentiality  or  non-disclosure   agreements   utilized  by  Seller  or  any
Subsidiary to protect its Trade Secrets have been provided to Buyer.  The Seller
and each of its Subsidiaries are not using or in any way making use of any Trade
Secrets of any third party,  including  without  limitation a former employer of
any present or past employee of Seller or any Subsidiary.

          (j)  To  Seller's  knowledge,  none  of the  Trade  Secrets  is  being
infringed by any other person,  and none of the Trade Secrets  infringe upon the
trade secret rights of any other person.

      2.15     Contracts and Commitments.  

           (a) Except for contracts, commitments, plans, agreements and licenses
described






in Schedule 2.15 hereto , neither  Seller  nor  any  Subsidiary is a party to or
subject  to: 

           (i) any  contract or  agreement  for the  purchase of any  commodity,
material,  equipment or asset, except purchase orders in the ordinary course for
less than $1,000 each, such orders not exceeding in the aggregate [$5,000];

           (ii) any other  contracts or agreements  creating  any obligations of
Seller or any Subsidiary after the date of the Base Balance Sheet;

           (iii) any contract or agreement  providing for the purchase of all or
substantially all of its requirements of a particular product from a supplier;

           (iv) any contract or agreement  which by its terms does not terminate
or is not  terminable  without  penalty  by  Seller or such  Subsidiary  (or its
successor or assign) within one year after the date hereof;

           (v) any contract or  agreement  for the sale or lease of its products
not made in the ordinary course of business;

           (vi) any contract with any sales agent or  distributor of products of
Seller or any Subsidiary;

           (vii) any  contract  containing  covenants  limiting  the  freedom of
Seller or any  Subsidiary  to compete in any line of business or with any person
or entity; or

           (viii) any license or franchise agreement (as licensor or licensee or
franchisor or franchisee).

         (b)  Except as  described  in  Schedule  2.15,  neither  Seller nor any
Subsidiary is in default under any contracts,  commitments, plans, agreements or
licenses to which they are party or by which they are bound or has  knowledge of
any  termination,  cancellation,  limitation  or  modification  or change in any
business  relationship with any material supplier or customer.  For the purposes
hereof,  a supplier or  customer  is  material if it accounts  for more than two
percent  (2%) of the  orders  or sales,  as the case may be,  of Seller  and its
Subsidiaries on a consolidated basis.

      2.16 Labor and Employee  Relations.

         (a) Except as shown on Schedule  2.16  hereto,  there are no  currently
effective consulting or employment  agreements or other material agreements with
individual consultants or employees to which Seller or any Subsidiary is a party
or by which they are bound.  Complete  and  accurate  copies of all such written
agreements  have been  delivered to Buyer.  Also shown on Schedule  2.16 are the
name  and  rate of  compensation  (including  all  bonus  compensation)  of each
officer,  employee or agent of Seller or any Subsidiary.






         (b) Except as shown on Schedule  2.16,  none of the employees of Seller
or any  Subsidiary is covered by any  collective  bargaining  agreement with any
trade or labor union,  employees'  association or similar  association.  Each of
Seller  and the  Subsidiaries  has  complied  with  applicable  laws,  rules and
regulations  relating to the employment of labor,  including without  limitation
those relating to wages,  hours,  unfair labor  practices,  discrimination,  and
payment  of social  security  and  similar  taxes.  There are no  representation
elections,  arbitration  proceedings,  labor  strikes,  slowdowns or  stoppages,
material grievances or other labor troubles pending or overtly threatened,  with
respect  to  the  employees  of  Seller  or any  Subsidiary. 

         (c) There are no complaints against Seller or any Subsidiary pending or
overtly  threatened  before the National  Labor  Relations  Board or any similar
state or local  labor  agencies,  or  before  the Equal  Employment  Opportunity
Commission or any similar state or local agency, by or on behalf of any employee
of  Seller or any  Subsidiary.  

         (d) There is no  contingent  liability for sick leave,  vacation  time,
severance  pay or similar  items not set forth on the Base  Balance  Sheet or on
Schedule 2.16. The execution, delivery and performance of this Agreement and the
consummation  of the  transactions  contemplated  hereby  will not  trigger  any
severance pay obligation under any contract or at law.

          (e) The Seller has  provided  to Buyer a complete  description  of all
employment  policies  under which the Seller or any  Subsidiary  has operated or
which has been communicated to their employees.

      2.17 Employee  Benefits and ERISA.  

         (a) Schedule 2.17 (a) hereto describes all of the employee compensation
and benefit plans,  agreements,  commitments,  practices or  arrangements of any
type  (including,  but not limited to,  plans  described  in Section 3(3) of the
Employee  Retirement Income Security Act of 1974, as amended ("ERISA")) offered,
maintained  or  contributed  to by Seller or any  Subsidiary  for the benefit of
current or former  employees or directors of Seller or any  Subsidiary,  or with
respect to which Seller or any Subsidiary has or may have any liability, whether
direct or  indirect,  actual  or  contingent  (including,  but not  limited  to,
liabilities  arising from affiliation  under Section 414(b),  (c), (m) or (o) of
the Code or Section 4001 of ERISA) (collectively,  the "Benefit Plans"). Neither
Seller  nor any  Subsidiary  has  incurred  any  obligation  for any  withdrawal
liability  or  liability  to make any other  contributions  with  respect to any
employee  benefit  plan that is a  "multiemployer  plan"  within the  meaning of
Section 3(37) of ERISA.  Neither  Seller nor any  Subsidiary  has any liability,
whether direct or indirect,  actual or contingent,  with respect to any employee
pension plan as defined in Section 3(2) of ERISA,  and which is intended to meet
the  qualification  requirements  of the Code that is a defined benefit plan (as
defined in Section 3(35) of ERISA) and is subject to Title IV of ERISA,  whether
or not  terminated  (including,  but not limited to,  liabilities  arising  from
affiliation under Section 414(b), (c), (m) or (o) of the Code or Section 4001 of
ERISA).

           (b) With respect to each Benefit  Plan  described in Section  2.17(a)
hereto,  Seller has delivered to Buyer true and complete  copies of: (i) any and
all plan documents  (including,  but not limited to, all amendments thereto) and
agreements  (including,   but  






not limited  to,  trust  agreements,  insurance  contracts,  and  custodial  and
investment   management   agreements);   (ii)  any  and  all  material  employee
communications (including, but not limited to, all summary plan descriptions and
material modifications thereto, claims, review policies, distribution forms, and
loan  documents,  as applicable);  (iii) all returns or reports  required at any
time  within  the last five (5) years by ERISA or the Code  (including,  but not
limited to, the five (5) most recent actuarial reports, if applicable); (iv) the
most recent annual and periodic  accounting of plan assets,  if applicable;  (v)
the most recent  determination letter received from the Internal Revenue Service
(the  "Service"),  if  applicable;  and  (vi)  in the  case of any  unfunded  or
self-insured plan or arrangement,  a current estimate of accrued and anticipated
liabilities thereunder.

           (c) With respect to each Benefit Plan  described on Schedule  2.17(a)
hereto and except as set forth on Schedule  2.17(c)  hereto,  (i) if intended to
qualify under Section 401(a) of the Code, such plan so qualifies,  and its trust
is exempt from  taxation  under Section  501(a) of the Code;  (ii) such plan has
been  administered  and enforced in accordance with its terms and all applicable
laws,  regulations  and  rulings in all  material  respects;  (iii) no breach of
fiduciary  duty has occurred  with respect to which Seller or any  Subsidiary or
any Benefit  Plan may be liable or otherwise  damaged in any  material  respect;
(iv) no material  disputes nor any audits or  investigations by any governmental
authority are pending or threatened; (v) no "prohibited transaction" (within the
meaning  of either  Section  4975(c)  of the Code or  Section  406 of ERISA) has
occurred with respect to which Seller or any  Subsidiary or any Benefit Plan may
be liable or otherwise damaged in any material  respect;  (vi) all contributions
(including,  without limitation,  normally anticipated matching or discretionary
contributions under defined  contribution  plans),  premiums,  and other payment
obligations have been accrued on the consolidated financial statements of Seller
(including  without  limitation  the Base  Balance  Sheet)  in  accordance  with
generally accepted accounting principles, and, to the extent due, have been made
on a timely basis, in all material respects;  (vii) all contributions or benefit
payments made or required to be made under such plan meet the  requirements  for
deductibility  under the Code; (viii) Seller has expressly reserved the right to
amend,  modify or terminate such plan, or any portion of it, at any time without
liability to itself;  and (ix) no such plan requires Seller or any Subsidiary to
continue to employ any employee or director.

           (d) With respect to each Benefit Plan  described on Schedule  2.17(a)
hereto and except as set forth on Schedule 2.17(d) hereto,  (i) no such plan is,
or has ever  been,  subject  to Title IV of  ERISA;  (ii)  there is no excess of
actuarial  accrued  liabilities or "benefit  liabilities" (as defined in Section
4001(a)(16)  of  ERISA),  over the fair  market  value of Plan  assets as of the
Closing Date; (iii) there has been no "accumulated  funding deficiency," whether
or not  waived,  and no missed  "quarterly  contributions,"  (as these terms are
defined in ERISA); (iv) the funding methods used are acceptable under ERISA; (v)
the actuarial  assumptions used are and have been reasonable,  both individually
and collectively and calculated as if the participants receive lump sum payments
upon plan termination;  (vi) there has been no "reportable event" (as defined in
Section  4043 of  ERISA);  (vii)  there  has  been  no  termination  or  partial
termination;  (viii) there has been no filing with the Pension Benefit  Guaranty
Corporation  ("PBGC")  of an intent to  terminate  such  plan,  nor has the PBGC
instituted any proceedings to terminate such plan; (ix) no lien has been created
under Section 412(n) of the Code or Section 302(f) of ERISA;  (x) neither Seller
nor any 






Subsidiary  has  received a notice of  deficiency  or  liability or a demand for
payment  from,  incurred any  liability to, been assessed a penalty by, or had a
lien perfected or enforced by the PBGC; and (xi) if such plan is a multiemployer
pension plan under which the Seller is obligated  to make  contributions,  there
would be no withdrawal  liability  under Title IV of ERISA upon the cessation of
contributions to such plan as of the day of the Closing.

           (e) With respect to each Benefit Plan  described on Schedule  2.17(a)
hereto which provides  welfare benefits of the type described in Section 3(1) of
ERISA: except as set forth on Schedule 2.17(e) hereto, (i) no such plan provides
medical  or death  benefits  with  respect to  current  or former  employees  or
directors  of  Seller  or any  Subsidiary,  or their  dependents,  beyond  their
termination of employment,  other than coverage  mandated by Sections 601-608 of
ERISA  and 4980B of the Code;  (ii)  each  such  plan has been  administered  in
compliance with Sections  601-609 of ERISA and 4980B of the Code;  (iii) no such
plan is or is provided through a "multiple employer welfare  arrangement" within
the  meaning  of  Section  3(40) of ERISA;  and (iv) no such plan has  reserves,
assets, surpluses or prepaid premiums.

           (f)  The  consummation  of  the  transactions  contemplated  by  this
Agreement  will not (i) entitle any  individual  to severance  pay pursuant to a
prior  agreement  with Seller;  (ii)  accelerate  the time of payment or vesting
under any Benefit Plan; or (iii) increase the amount of compensation or benefits
due to any individual.  No payment made or  contemplated  under any Benefit Plan
constitutes an "excess parachute  payment" within the meaning of Section 280G of
the Code.

      2.18  Environmental  Matters. 



           (a) Except as  disclosed in Schedule  2.18 hereto,  any and all waste
oil,  hazardous  waste,  hazardous  substances,  toxic  substances  or hazardous
materials used or generated by Seller or any Subsidiary have always been and are
being  generated,  used,  stored or  treated on or at any of the  properties  or
facilities owned or leased by Seller or any Subsidiary (for the purposes of this
Section, a "Site") in accordance with federal, state and local laws, regulations
and ordinances.  Copies of any and all filings made or documents  prepared under
the  California  Safe Drinking Water & Toxic  Enforcement  Act of 1986 and under
Title III of the Superfund Amendments and Reauthorization Act of 1986, including
without  limitation  material safety data sheets and chemical  lists,  have been
provided  to  Buyer. 

           (b) Except as disclosed in Schedule 2.18 hereto,  no petroleum,  oil,
hazardous waste,  hazardous substances,  toxic substances or hazardous materials
used or generated by Seller or any  Subsidiary  have ever been,  are being,  are
intended  to be or are  threatened  with being  spilled,  released,  discharged,
disposed, placed, leaked, or otherwise caused to become located in the air, soil
or water in, under or upon a Site.  Seller has provided Buyer with copies of all
notices filed pursuant to the Comprehensive Environmental Response, Compensation
and Liability Act or comparable  state law,  including  without  limitation  any
reports, whether oral or written, made to the National Response Center, or other
agencies.

           (c) Except as disclosed in Schedule 2.18 hereto,  no petroleum,  oil,
hazardous





substances  or  hazardous  waste have ever been  shipped by or for Seller or any
Subsidiary to other sites or facilities for treatment,  storage or disposal, and
neither  Seller nor any  Subsidiary  has  received  any notice that any sites or
facilities  to which any such wastes have been shipped or sent are subject to or
threatened to become  subject to any  governmental  response  action or clean up
order.  Seller has  provided  Buyer  with  copies of all  manifests  documenting
disposal  of  hazardous  substances  relating  to  operations  of Seller and its
Subsidiaries.

          (d)  Except as  disclosed  in  Schedule  2.18  hereto,  all  hazardous
materials and toxic  substances have been shipped by Seller and its Subsidiaries
in accordance with all applicable federal, state and local laws, regulations and
ordinances,  including The Hazardous  Materials  Transportation  Act, the regula
tions of the Department of Transportation, and any corresponding state and local
statute and regulations adopted pursuant to said acts.

          (e) All underground  tanks and other  underground  storage  facilities
located at any Site are  disclosed  in  Schedule  2.18  hereto and copies of all
notifications  made to  federal,  state or  local  authorities  pursuant  to the
Resource  Conservation  and Recovery Act relating to  underground  storage tanks
have been  provided to Buyer.  As of the date hereof,  none of such  underground
tanks and other underground  storage facilities are in violation of any federal,
state or local environmental law, regulation or ordinance.

          (f) Except as disclosed  in Schedule  2.18  hereto,  all wells,  water
discharges and other water diversions on any Site are properly registered and/or
permitted  under, and copies of such permits have been provided to Buyer, and do
not  violate,  any  applicable  federal,  state  or  local  law,  regulation  or
ordinance.

         (g) Except as disclosed in Schedule 2.18 hereto, each of Seller and its
Subsidiaries has all necessary and applicable air permits and licenses,  and has
properly  registered  (for air  pollution  control  purposes)  all air  emitting
devices used in activities  conducted by it, as required by applicable  federal,
state or local law,  regulation  or  ordinance.  Copies of all such permits have
been provided to Buyer.

          (h)  Except  as  disclosed  on  Schedule  2.18  hereto,  all  asbestos
insulated  equipment or areas on any Site are in compli ance with all applicable
federal, state and local laws, current regulations, and ordinances.

          (i)  For  purposes  of this  section,  "hazardous  waste",  "hazardous
substances",  "hazardous  material",  "oil",  "petroleum",  "toxic  substances",
"manifest",  "material safety data sheets", and "response action" shall have the
meaning  set  forth  in  the  Resource   Conservation   and  Recovery  Act,  The
Comprehensive  Environmental  Response,  Compensation  and  Liability  Act,  The
Hazardous  Materials  Transportation  Act, The Federal  Water Pollu tion Control
Act,  The Toxic  Substances  Control  Act,  and corres  ponding  state and local
statutes,  and ordinances and any amend ments, or successor  legislation to such
Acts, or as currently defined in any federal, state or local regulations adopted
pursuant to such Acts.







      2.19  Permits.  Each of Seller and its  Subsidiaries  holds all  licenses,
permits  and  franchises  which  are  required  to permit  it to  conduct  their
respective businesses as presently conducted, and all such licenses, permits and
franchises are listed on Schedule 2.19 hereto and are now, and will be after the
Closing,  valid and in full force and effect,  and Buyer shall have full benefit
of the same. 


      2.20 Warranty or Other Claims. Except as disclosed on Schedule 2.20, there
are no existing or threatened  claim, nor are there any facts upon which a claim
could be based,  against  Seller or any  Subsidiary  for services or merchandise
which are defective or fail to meet any service or product warranties.  No claim
has been asserted  against Seller or any Subsidiary for  renegotiation  or price
redetermination of any business  transaction,  and there are no facts upon which
any such claim could be based.

      2.21  Litigation.  Except for matters  described in Schedule  2.21 hereto,
there is no litigation  pending or threatened  against  Seller or any Subsidiary
and there are no outstanding court orders,  court decrees, or court stipulations
to which Seller or any of its  Subsidiaries  is a party or by which any of their
assets  are  bound,  any of which (a)  question  this  Agreement  or affect  the
transactions  contemplated  hereby,  or  (b)  materially  restrict  the  present
business, properties,  operations,  prospects, assets or condition, financial or
otherwise,  of  Seller or any  Subsidiary,  or (c) will  result in any  material
adverse change in the business, properties, operations, prospects, assets or the
condition, financial or otherwise, of Seller or any of its Subsidiaries. Neither
Seller nor any  Subsidiary,  has any reason to believe that any further  action,
suit,  proceeding or investigation which (a) questions this Agreement or affects
the transactions  contemplated  hereby, or (b) materially  restricts the present
business, properties,  operations, prospects, assets or conditions, financial or
otherwise,  of  Seller or any  Subsidiary,  or (c) will  result in any  material
adverse change in the business,  properties,  operations,  prospects,  assets or
condition,  financial or otherwise, of Seller or any of its Subsidiaries,  which
has not been  identified in Schedule  2.21 may be brought  against the Seller or
any of its Subsidiaries. 

      2.22 Borrowings and Guarantees.  Except for the loan in the amount of Five
Hundred Thousand Dollars  ($500,000) made pursuant to that certain Business Loan
and Security/Subordination Agreement by and among BBI, Seller and Concord Growth
Corporation  (the "Loan  Agreement") and as otherwise set forth on Schedule 2.22
hereto, there are no agreements and undertakings pursuant to which Seller (a) is
borrowing  or is entitled to borrow any money,  (b) is lending or has  committed
itself to lend any money,  or (c) is a guarantor  or surety with  respect to the
obligations  of any person.  Complete  and  accurate  copies of all such written
agreements have been delivered to Buyer. 

      2.23  Financial  Service  Relations  and  Powers of  Attorney.  All of the
arrangements  which  Seller  or any  Subsidiary  has with  any  bank  depository
institution or other financial  services  entity,  whether or not in Seller's or
the Subsidiary's name, are completely and accurately  described on Schedule 2.23
hereto,  indicating  with  respect  to  each of such  arrangements  the  type of
arrangement maintained (such as checking account,  borrowing arrangements,  safe
deposit  box,  etc.) and the person or persons  authorized  in respect  thereof.
Except as set forth in Schedule 2.23



or  pursuant  to  the Loan Agreement,  neither the Seller nor any Subsidiary has
any outstanding power of attorney.

    2.24 Insurance. Schedule 2.24 contains a complete and correct list of all
policies  of  insurance  maintained  by  Seller  or  any  Subsidiary  (including
insurance  providing  benefits  for  employees)  in effect  on the date  hereof,
together  with  complete and correct  information  with respect to the premiums,
coverages,  insurers,  expiration  dates,  and  deductibles  in  respect of such
policies. Except for amounts deductible under policies of insurance described on
such Schedule or with respect to risks assumed as a  self-insurer  and described
on such Schedule, neither Seller nor any Subsidiary is, or has been at any time,
subject to any liability as a self-insurer of the businesses or assets of Seller
or any Subsidiary  that is reasonably  likely to have a material  adverse effect
upon the businesses,  assets,  revenues,  condition  (financial or otherwise) or
prospects  of Seller or any  Subsidiary.  Except as set forth on Schedule  2.24,
there are no claims pending or overtly  threatened,  under any of said policies,
or disputes with insurers, and all premiums due and payable thereunder have been
paid,  and all such  policies  are in full force and effect in  accordance  with
their  respective  terms. 

      2.25 Minute Books. The minute books of Seller and the minute books of each
Subsidiary accurately record all action taken by their respective  shareholders,
boards of directors and  committees  thereof. 

      2.26  Finder's Fee.  Except as set forth on Schedule 2.26 hereto,  neither
the  Seller,  nor any  Subsidiary  nor,  to  Seller's  knowledge  any  Principal
Stockholder,  has  incurred  or become  liable for any  broker's  commission  or
finder's fee relating to or in connection with the transactions  contemplated by
this  Agreement.   

      2.27  Transactions  with  Interested  Persons.  No  officer,   supervisory
employee,  director  or  stockholder  of  Seller  or any  Subsidiary,  or  their
respective  spouses  or  children,  (a)  owns,  directly  or  indirectly,  on an
individual or joint basis, any material  interest in, or serves as an officer or
director of, any customer,  competitor or supplier of Seller or any  Subsidiary,
or any organization  which has a material contract or arrangement with Seller or
any  Subsidiary,  or (b) has any  contract or  agreement  with the Seller or any
Subsidiary  other  than as  disclosed  on  Schedule  2.27  hereto,  and all such
agreements are, except as noted on such schedule, on arms-length terms.

      2.28  Absence  of  Sensitive   Payments.   Neither  Seller,   any  of  its
Subsidiaries,   nor  any  of  their  respective  directors,   officers,  agents,
stockholders or employees, either on behalf of Seller or its Subsidiaries:

          (a) has made or has  agreed  to make any  contributions,  payments  or
gifts of funds or property to any governmental official, employee or agent where
either the payment or the purpose of such  contribution,  payment or gift was or
is illegal under the laws of the United States, any state thereof,  or any other
jurisdiction (foreign or domestic);






           (b) has  established or maintained  any unrecorded  fund or asset for
any purpose,  or has made any false or artificial entries on any of its books or
records for any reason; or

          (c) has made or has agreed to make any contribution or expenditure, or
has  reimbursed any political gift or  contribution  or expenditure  made by any
other person, to candidates for public office,  whether federal,  state or local
(foreign or domestic) where such  contributions  were or would be a violation of
applicable law.

      2.29  Disclosure of Material  Information.  Neither this Agreement nor any
schedule or exhibit hereto or certificate  issued  pursuant  hereto contains any
untrue statement of a material fact, or omits to state a material fact necessary
to make the  statements  herein  or  therein  not  misleading,  relating  to the
business  or  affairs  of Seller  and its  Subsidiaries.  There is no fact which
materially adversely affects the business, condition (financial or otherwise) or
prospects of Seller and its Subsidiaries  which has not been set forth herein or
in a  Schedule  hereto. 

      2.30 SEC  Filings.  

        (a) Seller has filed or caused to be filed all registration  statements,
reports or statements,  and any amendments  thereto,  required to be filed by it
pursuant to Sections 13, 14 or 15(d) of the Securities Exchange Act of 1934, and
has  heretofore  furnished (or shall prior to the Closing Date furnish) to Buyer
copies, as applicable, of:

           (i)  Seller's  Annual Report on  Form  10-K for its three most recent
fiscal years;

           (ii) Seller's Annual Report to Stockholders for its three most recent
fiscal years;

           (iii)  Seller's  definitive  Proxy  Statements  for all  meetings  of
stockholders since the beginning of its third preceding fiscal year; and

           (iv) Seller's Quarterly Report(s) on Form 10-Q for each quarter since
the end of its most recent fiscal year.

         (b) The  documents  furnished  to Buyer  pursuant to paragraph (a) were
prepared in accordance with the  requirements of the Securities  Exchange Act of
1934 and the rules and regula tions  thereunder in all material  respects and do
not contain any misstatement of a material fact or omit to state a material fact
necessary in order to make the  statements  contained  therein,  in light of the
circumstances, not misleading.

ARTICLE 3. REPRESENTATIONS AND WARRANTIES OF BBI AND BUYER.

BBI and Buyer hereby represent and warrant to Seller as follows: 

      3.1 Organization of BBI and Buyer.  Each of BBI and Buyer is a corporation
duly 




organized, validly existing and in good standing under the laws of Massachusetts
with full  corporate  power to own or lease its  properties  and to conduct  its
business  in the  manner and in the places  where such  properties  are owned or
leased or such  business is  conducted  by each of them. 

      3.2  Authorization  of  Transaction.  All necessary  action,  corporate or
otherwise, has been taken by BBI and Buyer to authorize the execution,  delivery
and  performance  of this  Agreement,  and the  same is the  valid  and  binding
obligation of BBI and Buyer enforceable in accordance with its terms, subject to
laws of  general  application  affecting  creditor's  rights  generally. 

      3.3 No Conflict of Transaction  With Obligations and Laws. 

           (a) Neither the execution, delivery or performance of this Agreement,
nor  the  performance  of  the  transactions   contemplated  hereby,  will:  (i)
constitute  a breach or  violation  of BBI or Buyer's  Charter or by-laws;  (ii)
conflict with or  constitute  (with or without the passage of time or the giving
of notice) a breach of, or default under any material  agreement,  instrument or
obligation  to which BBI or Buyer is a party or by which either of them or their
respective  assets are bound which would  materially  affect the  performance by
Buyer of its obligations under this Agreement; or (iii) result in a violation of
any law, regulation, administrative order or judicial order applicable to BBI or
Buyer. 

           (b) The execution, delivery and performance of this Agreement and the
transactions  contemplated  hereby by Buyer do not require the consent,  waiver,
approval,  authorization,  exemp tion of or giving of notice to any governmental
authority.

     3.4 SEC Filings.

           (a)  Buyer  has  filed  or  caused  to  be  filed  all   registration
statements,  reports or statements,  and any amendments thereto,  required to be
filed by it pursuant to Sections 13, 14, or 15(d) of the Securities Exchange Act
of 1934,  and has  heretofore  furnished  (or shall  prior to the  Closing  Date
furnish) to Seller copies, as applicable, of:

           (i) Buyer's  Annual  Report on Form 10-K for its most  recent  fiscal
year;

           (ii) Buyer's Annual Report to Stockholders for its most recent fiscal
year;

           (iii)  Buyer's  definitive  Proxy  Statements  for  all  meetings  of
Stockholders since the beginning of its preceding fiscal year; and

           (iv) Buyer's Quarterly  Report(s) on Form 10-Q for each quarter since
the end of its most recent fiscal year.





      3.5  Litigation.  There is no  litigation  pending or, to the knowledge of
Buyer, threatened against Buyer which will have a material adverse effect on its
properties, assets or business or which would prevent or hinder the consummation
of the trans actions contemplated by this Agreement.

      3.6 Finder's  Fee.  Except as set forth on Schedule 3.6 hereto,  Buyer has
not  incurred or become  liable for any  broker's  commission  or  finder's  fee
relating  to or  in  connection  with  the  transactions  contemplated  by  this
Agreement. 


 ARTICLE 4. COVENANTS OF SELLER. 

      Seller hereby  covenants and agrees with  Buyer as  follows: 

      4.1  Conduct  of  Business.  Between  the date of this  Agreement  and the
Closing,  Seller will do, and it will cause each of its  Subsidiaries to do, the
following  unless  Buyer shall  otherwise  consent in  writing: 

           (a) conduct its business only in the ordinary course and refrain from
changing or  introducing  any method of management  or operations  except in the
ordinary  course of business and consistent  with prior  practices; 

           (b) refrain  from making any  purchase,  sale or  disposition  of any
asset or property other than in the ordinary course of business, from purchasing
any  capital  asset  costing  more  than  $300  and from  mortgaging,  pledging,
subjecting to a lien or otherwise  encumbering  any of its properties or assets;


           (c) refrain from incurring any contingent liability as a guarantor or
otherwise  with respect to the  obligations  of others,  and from  incurring any
other  contingent  or fixed  obliga tions or  liabilities  except those that are
usual and normal in the ordinary course of business; 

           (d) refrain from making any change or  incurring  any  obligation  to
make a change in its Charter or by-laws or authorized or issued  capital  stock,
except as contemplated by this Agreement;

           (e) refrain from  declaring,  setting aside or paying any dividend or
making any other  distribution in respect of capital stock, or making any direct
or indirect  redemption,  purchase or other  acquisition  of capital  stock,  of
Seller or any Subsidiary other than a wholly-owned Subsidiary;

           (f) refrain from entering into any employment  contract or making any
change in the compensation  payable or to become payable to any of its officers,
employees or agents;

           (g) refrain from prepaying any loans from its stock holders, officers
or directors (if any) or making any change in its borrowing arrangements;








           (h) use its best  efforts to prevent any change  with  respect to its
banking arrangements;

           (i) use its best efforts to keep intact its business organization, to
keep  available its present  officers,  agents and employees and to preserve the
goodwill of all suppliers,  customers and others having business  relations with
it;

           (j) have in effect and  maintain  at all times all  insurance  of the
kind,  in the amount and with the insurers set forth in Schedule  2.24 hereto or
equivalent insurance with any substitute insurers approved by Buyer; and

           (k) permit  Buyer  and its  authorized  representatives  to have full
access to all its  properties,  assets,  records,  tax  returns,  contracts  and
documents and furnish to Buyer or its authorized  representatives such financial
and other  information  with respect to its business or  properties as Buyer may
from time to time reasonably request.

          (l) promptly  advise Buyer of  additions,  deletions or other  changes
required to be made to the Schedules hereto to make such Schedules  accurate and
complete as of the Closing  solely as a result of the  operation of the business
of Seller in a manner  consistent with the covenants of this  Agreement,  and to
furnish Buyer with such revised Schedules at or prior to the Closing.

     4.2  Authorization  from  Others.  Prior to the  Closing,  Seller will have
obtained,  and will cause its Subsidiaries to have obtained, all authorizations,
consents and permits of others required to permit the consummation by Seller and
its Subsidi aries of the transactions contemplated by this Agreement.

     4.3 Breach of Representations and Warranties.  Promptly upon the occurrence
of, or promptly  upon  Seller's  becoming  aware of the  impending or threatened
occurrence of, any event which would cause or constitute a breach, or would have
caused or  constituted a breach had such event  occurred or been known to Seller
prior to the date hereof, of any of the representations and warranties of Seller
contained  in or  referred  to in this  Agreement,  Seller  shall give  detailed
written  notice  thereof  to Buyer and shall use its best  efforts to prevent or
promptly remedy the same.

      4.4  Consummation  of Agreement.  The Seller shall use its best efforts to
perform and fulfill all conditions  and  obligations on its part to be performed
and  fulfilled  under  this  Agreement,   to  the  end  that  the   transactions
contemplated  by this Agreement  shall be fully carried out. To this end, Seller
will obtain all necessary  authorizations  or approvals of its  stockholders and
Board of Directors, to the sale of assets contemplated by this Agreement and the
dissolution of Seller in accordance with the laws of the state of  incorporation
of Seller,  which shall include as integral parts  thereof:

           (a) the  transfer to Buyer of the  Subject  Assets upon the terms and
conditions set forth in this Agreement;





           (b)  cessation of all business by Seller as Source  Scientific,  Inc.
from and after the Closing,  except in connection with its liquidation;  and 

           (c)  authorization  to  the  officers  and  directors  of  Seller  to
discharge all debts and obligations of Seller (other than those assumed by Buyer
hereunder),  and to distribute in  liquidation  the purchase  price  received by
Seller as provided herein.

       4.5  Compliance  with  Securities  Laws.  As  soon as  practicable  after
execution  of this  Agreement,  Seller  shall  cause  its  counsel  to  initiate
preparation of  preliminary  proxy  materials in accordance  with the Securities
Exchange Act of 1934, and the rules and  regulations  thereunder,  for a special
meeting of the Company's stockholders at which the stockholders will be asked to
approve the transactions  contemplated  hereby. Such proxy materials shall be in
form and  substance  satisfactory  to the  Buyer  and its  counsel. 

ARTICLE  5. COVENANTS OF BBI AND BUYER.

     BBI and Buyer hereby covenant and agree with Selleras follows:

      5.1  Authorization  from  Others.  Prior to the  Closing  Buyer  will have
obtained all  authorizations,  consents and permits of others required to permit
the  consummation  by BBI and  Buyer of the  transactions  contemplated  by this
Agreement. 

      5.2  Consummation  of  Agreement.  The Buyer shall use its best efforts to
perform and fulfill all conditions  and  obligations on its part to be performed
or fulfilled under this Agreement, to the end that the transactions contemplated
by this  Agreement  shall be fully carried out. To this end, BBI will obtain any
approvals of its  stockholders  or Board of Directors  and Buyer will obtain any
approvals of its  stockholders  or Board of  Directors  which may be required in
order to consummate  the  transactions  contemplated  hereby.  

      5.3 Disclosure of Adverse Change. Prior to the Closing, Buyer shall advise
Seller of any fact which materially  adversely  affects the business,  condition
(financial or otherwise) or prospects of Buyer and BBI not otherwise  previously
publicly disclosed. To this end, Buyer shall have the right, prior to disclosing
such fact to Seller, to require Seller to enter into a confidentiality agreement
relating to  non-disclosure  of such fact consistent  with compliance  under the
Securities Exchange Act of 1934.

ARTICLE 6.  CONDITIONS TO OBLIGATIONS OF BBI AND BUYER. 

      The  obligations  of BBI and Buyer to  consummate  this  Agreement and the
transactions  contemplated hereby are subject to the condition that on or before
the  Closing  Date  the  actions  required  by this  Article  6 will  have  been
accomplished. 

      6.1  Shareholder  Authorization.   This  Agreement  and  the  transactions
contemplated  hereby shall have been duly  approved by the  affirmative  vote of
Seller's stockholders,  as 






required by the laws of the state of incorporation of Seller.

      6.2  Dissenting  Stockholders.  Holders of not more than one-half  percent
(.5%) of the shares of the  Common  Stock of Seller  shall  have taken  steps to
preserve the rights of dissenting stockholders afforded by the laws of the state
of incorporation of Seller,  and Seller shall have delivered to Buyer a true and
correct list of the names,  addresses  and numbers of shares held by each holder
of  dissenting  shares of  Seller  and the  steps  taken by each such  holder as
required  by the  laws  of  Seller's  jurisdiction  of  incorporation  governing
appraisal  rights.

      6.3 Representations;  Warranties;  Covenants.  Each of the representations
and  warranties  of Seller  contained  in Article 2 shall be true and correct as
though  made on and as of the  Closing  Date.  Seller  shall,  on or before  the
Closing Date, have performed all of its obligations hereunder which by the terms
hereof are to be  performed  on or before the Closing  Date.  Seller  shall have
delivered  to Buyer a  certificate  of Seller's  President  and Chief  Financial
Officer dated as of the Closing Date, in form and substance  satisfactory to BBI
and Buyer,  to the effect that the statements  contained in Sections 6.3 and 6.4
are true and  that  all  other  conditions  to  BBI's  and  Buyer's  obligations
hereunder  have  been  satisfied.   Seller  shall  have  delivered  to  Buyer  a
certificate of Seller's President and Chief Financial  Officer,  dated as of the
Closing Date, in form and substance  satisfactory  to BBI and Buyer,  confirming
that the conditions set forth in Sections 6.1 and 6.2 have been fulfilled.

      6.4 No Material Adverse Change.  There shall have been no material adverse
change in the financial condition,  prospects,  properties, assets, liabilities,
business or  operations  of Seller since the date hereof,  whether or not in the
ordinary course of business.

      6.5 Opinion of Seller's Counsel.  

           (a) At the Closing,  BBI and Buyer shall have  received from Susan L.
Preston,  Esquire,  counsel for Seller,  an opinion dated as of the Closing,  in
form and substance satisfactory to BBI and Buyer.

           (b)At the  Closing,  BBI and Buyer shall have  received  from Messrs.
Arter & Hadden,  counsel for Seller, an opinion dated as of the Closing, in form
and substance satisfactory to BBI and Buyer.

      6.6 Employment  Contracts.  Each of the individuals listed on Schedule 6.6
hereto shall have accepted  employment  with Buyer and executed and delivered to
Buyer an employment  agreement  having  substantially  the terms and  conditions
contained in Exhibit 6.6 attached hereto, and all employment  contracts to which
Seller is a party shall have been terminated.

      6.7 Non-Competition  Contracts.  Seller and each of the individuals listed
on  Schedule   6.7  hereto   shall  have   executed   and   delivered  to  Buyer
non-competition  agreements  having  substantially  the terms and  conditions of
Exhibit 6.7 attached hereto.







      6.8 Approval of Board of Directors. The transactions  contemplated by this
Agreement  shall have been  reviewed  and  approved by the Board of Directors of
Buyer and BBI and their respective stockholders to the extent necessary.

     6.9 Approval of Buyer's Counsel. All actions, proceedings,  instruments and
documents  required to carry out this  Agreement  and all related  legal matters
contemplated  by this  Agreement  shall have been approved by counsel for Buyer,
provided that the approval of such counsel shall not be  unreasonably  withheld.


      6.10 Absence of Certain Litigation. There shall not be any (a) injunction,
restraining  order or order  of any  nature  issued  by any  court of  competent
jurisdiction  which  directs that this  Agreement  or any  material  transaction
contemplated  hereby  shall not be  consummated  as herein  provided,  (b) suit,
action or other proceeding by any federal,  state,  local or foreign  government
(or any agency  thereof)  pending before any court or  governmental  agency,  or
threatened  to be  filed  or  initiated,  wherein  such  complainant  seeks  the
restraint  or  prohibition  of  the  consummation  of any  material  transaction
contemplated by this Agreement or asserts the illegality  thereof,  or (c) suit,
action  or other  proceeding  by a private  party  pending  before  any court or
governmental  agency,  or  threatened  to be  filed or  initiated,  which in the
opinion of counsel for Buyer is likely to result in the restraint or prohibition
of the  consummation  of any  material  transaction  contemplated  hereby or the
obtaining of an amount in payment (or  indemnification) of material damages from
or other material  relief against any of the parties or against any directors or
officers of BBI or Buyer,  in connection  with the  consummation of any material
transaction  contemplated  hereby.

      6.11 FIRPTA Certificate.  At the Closing, the Seller will deliver to Buyer
certificates  which satisfy the  requirements of the  regulations  under Section
1445 of the  Internal  Revenue  Code of 1986,  as  amended. 

      6.12  Consents and  Waivers.  Seller  shall have  obtained  any  necessary
consents or waivers to assure  Buyer of the  benefits of all leases,  contracts,
commitments  and  rights,  to the  extent  that  the  assignment  of any  lease,
contract, commitment or right requires the consent of parties other than Seller.

      6.13 Escrow Agreement. There shall have been executed and delivered to BBI
and Buyer an Escrow  Agreement  in  substantially  the form  attached  hereto as
Exhibit 1.3, pursuant to which $250,000 of the purchase price shall be deposited
in escrow at the Closing to secure payment of any purchase  price  adjustment or
indemnification  payable to BBI and Buyer  hereunder  by reason of the breach of
any of the  representations  and  warranties  of Seller or  failure of Seller to
perform  any of its  obligations  hereunder,  and said  amounts  shall have been
deposited with the Escrow Agent pursuant to said Escrow Agreement.

      6.14  Convertible  Debentures.  Holders of the  convertible  debentures of
Seller in the principal  amount of $629,000  shall have  converted the principal
amount of such  debentures  and all  accrued  interest  thereon  ($70,898  as of
January 31, 1997) into 13,997,960 shares of Seller's 





Common Stock and  terminated in writing their stock purchase  warrants,  in full
satisfaction of Seller's obligations to such debenture holders.

      6.15 Opinion of Independent Accountants. Buyer shall have received in form
and  substance  reasonably  satisfactory  to it,  reports  and  opinions on such
business,  financial  and legal  matters  in  connection  with the  transactions
contemplated  by  this  Agreement  as it  deems  pertinent,  including,  without
limitation, a satisfactory report from Buyer's independent accountants,  Coopers
& Lybrand, regarding Seller's business and financial condition.

      6.16 Opinion of Investment Banking Firm. Buyer shall have received in form
and  substance  reasonably  satisfactory  to it, an  opinion  from a  recognized
investment banking firm to the effect that the purchase price is fair to Buyer's
stockholders from a financial point of view.

      6.17 Due Diligence.  The results of Buyer's due diligence investigation of
Seller  shall  be  satisfactory  to  Buyer,  in  Buyer's  sole  discretion.  Any
additions,  deletions  or  other  changes  to be  made to the  Schedules  hereto
pursuant to Section  4.1(1)  shall be  satisfactory  to Buyer,  in Buyer's  sole
discretion.

      6.18  Facility  Lease.  The lease with  respect to Seller's  Garden  Grove
facility  located at 7390 Lincoln Way,  Garden  Grove,  California  (the "Garden
Grove  Lease") shall have been amended,  in form and substance  satisfactory  to
Buyer,  to reduce to  approximately  25,000  square  feet (one  floor) the space
leased by Seller,  and to reduce the payment due under the Garden Grove Lease in
proportion to the decrease in the amount of space leased.

       6.19  Reduction  of  Interest   Payments.   Concord  Growth   Corporation
("Concord")  shall have agreed in writing to a reduction in the minimum interest
payment to $2,500 per month in return for an  increase  in interest to the prime
rate plus five percent (5%) and a reduction in  advancement  to seventy  percent
(70%),  along with  payment of the line of credit  loan by April 30,  1997,  and
Concord  shall  have  further  agreed  in  writing  that upon  repayment  of the
principal  amount of Seller's  line of credit loan with  Concord and all accrued
but  unpaid  interest  thereon,  Concord  shall  waive its  right to  prepayment
penalties of any kind.

      6.20 Consents to Transactions. BBI's lending bank, The First National Bank
of Boston, shall have consented to the transactions contemplated hereby.

      6.21  Authorization.  Seller  shall  have  obtained  and  will  cause  its
Subsidiaries  to have obtained all  authorities,  consents and permits of others
required  to permit  the  consummation  by Seller  and its  Subsidiaries  of the
transactions contemplated by this Agreement.

      6.22 Bulk  Sales Law.  Seller  shall have  complied  with the  obligations
imposed on vendors under the Bulk Sales Act, or the  equivalent,  as a result of
the transactions contemplated by this Agreement.

ARTICLE 7.  CONDITIONS TO OBLIGATIONS OF SELLER






The  obligations  of Seller to consummate  this  Agreement and the  transactions
contemplated  hereby are subject to the condition  that on or before the Closing
the  actions  required  by this  Article  7 will  have  been  accomplished.

      7.1  Shareholder  Authorization.   This  Agreement  and  the  transactions
contemplated hereby shall have been duly approved by the affirmative vote of the
stockholders  of Seller as  required  by Seller's  state of  incorporation. 

      7.2 Representations;  Warranties;  Covenants.  Each of the representations
and  warranties  of Buyer  contained  in Article 3 shall be true and  correct as
though made on and as of the  Closing;  Buyer  shall,  on or before the Closing,
have performed all of its obligations hereunder which by the terms hereof are to
be performed on or before the Closing;  and Buyer shall have delivered to Seller
a certificate  of the President and any Vice  President of Buyer dated as of the
Closing to such effect.

 ARTICLE 8. TERMINATION OF AGREEMENT.

      8.1 Termination.  At any time prior to the Closing,  this Agreement may be
terminated  (a) by mutual  consent of the  parties  with the  approval  of their
respective Board of Directors,  notwithstanding prior approval of this Agreement
by the  stockholders  of any  party,  (b) by  either  party if there  has been a
material  misrepresentation,  breach of  warranty  or breach of  covenant by the
other party in its  representations,  warranties and covenants set forth herein,
(c) by Buyer if the conditions stated in Article 6 have not been satisfied at or
prior to the  Closing,  or (d) by Seller if the  conditions  stated in Article 7
have  not been  satisfied  at or prior to the  Closing.

      8.2  Right  to  Proceed.  Anything  in  this  Agreement  to  the  contrary
notwithstanding, if any of the conditions specified in Article 6 hereof have not
been  satisfied,  Buyer shall have the right (but not the obligation) to proceed
with the transactions  contemplated hereby without waiving its rights hereunder,
and if any of the  conditions  specified  in  Article  7  hereof  have  not been
satisfied,  Seller shall have the right (but not the obligation) to proceed with
the    transactions    contemplated    hereby   without   waiving   its   rights
hereunder.

ARTICLE 9. RIGHTS AND OBLIGATIONS  SUBSEQUENT TO CLOSING.

      9.1 Survival of Warranties. All representations,  warranties,  agreements,
covenants and  obligations  herein or in any schedule,  certificate or financial
statement  delivered  by  either  party  to  the  other  party  incident  to the
transactions  contemplated  hereby  are  material,  shall be deemed to have been
relied  upon by the other  party and shall  survive  through and until March 31,
1998,  regardless of any investigation and shall not merge in the performance of
any obligation by either party hereto. 

      9.2 Collection of Assets.  Subsequent to the Closing, Buyer shall have the
right and authority to collect all receivables  and other items  transferred and
assigned to it by Seller 





hereunder and to endorse with the name of Seller any checks  received on account
of such  receivables  or other items,  and Seller  agrees that it will  promptly
transfer or deliver to Buyer from time to time after Closing,  any cash or other
property  that  Seller  may  receive  with  respect  to any  claims,  contracts,
licenses, leases, commitments, sales orders, purchase orders, receivables of any
character or any other items  required to be transferred by it to Buyer pursuant
to the provisions hereof.

      9.3 Payment of Debts.  Seller  shall as  promptly  as  possible  after the
Closing  pay all debts and  obligations  not to be assumed  by Buyer  hereunder.

ARTICLE 10. INDEMNIFICATION.  

      10.1  Definitions.  For  purposes of this Article 10: 

           "Losses" means all losses,  damages  (including,  without limitation,
punitive and consequential damages), liabilities,  payments and obligations, and
all expenses related thereto. Losses shall include any reasonable legal fees and
costs incurred by any of the  Indemnified  Persons  subsequent to the Closing in
defense of or in connection with any alleged or asserted  liability,  payment or
obligation,  whether or not any liability or payment,  obligation or judgment is
ultimately  imposed  against  the  Indemnified  Persons  and  whether or not the
Indemnified  Persons  are made or become  parties to any such  action. 

           "Buyer's  Indemnified  Persons"  means BBI and the  Buyer,  and their
respective directors, officers, employees, stockholders and agents. "Indemnified
Person"  means any person  entitled  to be  indemnified  under this  Article 10.

           "Indemnifying Person" means any person obligated to indemnify another
person under this Article 10. 

           "Seller's Indemnified Persons" means the Seller.

           "Third Party Action" means any written  assertion of a claim,  or the
commencement  of any action,  suit, or proceeding,  by a third party as to which
any  person   believes   it  may  be  an   Indemnified   Person   hereunder

      10.2  Indemnification  by  Seller. 

           (a) Subject to the limitations in paragraph (b) below,  Seller agrees
to defend,  indemnify and hold  harmless  Buyer's  Indemnified  Persons from and
against all Losses  directly or  indirectly  incurred by or sought to be imposed
upon any of them:

          (i) resulting from, relating to or arising out of any breach of any of
the  representations  or  warranties  made  by  Seller  in or  pursuant  to this
Agreement or any schedule 







hereto or in any  agreement,   document  or  instrument  executed  and delivered
pursuant hereto or in connection with the Closing;

           (ii)  resulting  from or arising out of any breach of any covenant or
agreement made by Seller in or pursuant to this Agreement;

           (iii) in  respect of any  liability  or  obligation  of Seller or any
Subsidiary not included in the Assumed Liabilities;

           (iv)  resulting  from or  arising  out of any  liability,  payment or
obligation  arising  out of any  litigation  or similar  matter  required  to be
described  on  Schedule  2.21,  except to the extent of  reserves  with  respect
thereto on the Base Balance Sheet;

           (v)  resulting  from or  arising  out of any  liability,  payment  or
obligation in respect of any taxes for all periods, or portions thereof,  ending
on or before the Closing Date,  owing by Seller or any Subsidiary of any kind or
description (including interest and penalties with respect thereto);

         (vi) resulting from or arising out of any  governmental  or third party
claims for damages or clean-up costs under any  environmental law arising out of
the  operations  of the Seller or any  Subsidiary on or before the Closing Date,
except to the extent of reserves with respect thereto on the Base Balance Sheet.

          (b) The right to indemnification under paragraph 10.2(a) is subject to
the  following  limitations:  Seller  shall have no  liability  under  paragraph
10.2(a)  unless one or more of the Buyer's  Indemnified  Persons  gives  written
notice to Seller  asserting a claim for Losses,  including  reasonably  detailed
facts and circumstances pertaining thereto, before the earlier of the running of
any applicable statute of limitations or March 31, 1998.

      10.3  Indemnification by Buyer.

           (a) From and after the Closing Date,  Buyer shall  indemnify and hold
harmless  Seller's  Indemnified  Persons  from any and all  Losses  directly  or
indirectly  incurred by or sought to be imposed upon them:

           (i)  resulting  from  or  arising  out  of any  breach  of any of the
representations or warranties made by Buyer, in or pursuant to this Agreement or
in any agreement,  document or instrument executed and delivered pursuant hereto
or in connection with the Closing; and

          (ii)  resulting  from or arising out of any breach of any  covenant or
agreement made by Buyer in or pursuant to this Agreement.

     10.4    Defense of Third Party Actions.





          (a) Promptly  after receipt of notice of any Third Party  Action,  any
person who believes he, she or it may be an Indemnified  Person will give notice
to the potential  Indemnifying  Person of such action. The omission to give such
notice to the Indemnifying  Person will not relieve the  Indemnifying  Person of
any liability  hereunder,  except to the extent,  but only to the extent, it was
prejudiced  thereby,  nor will it relieve it of any liability  which it may have
other than under this  Article 10. 

           (b)  Upon  receipt  of  a  notice  of  a  Third  Party  Action,   the
Indemnifying  Person shall have the right, at its option and at its own expense,
to participate in and be present at the defense of such Third Party Action,  but
not to control the defense,  negotiation  or settlement  thereof,  which control
shall remain with the Indemnified  Person,  unless the Indemnifying Person makes
the election  provided in paragraph (c) below.

           (c) By written  notice  within 45 days after receipt of a notice of a
Third Party Action,  an  Indemnifying  Person may elect to assume control of the
defense,   negotiation   and  settlement   thereof,   with  counsel   reasonably
satisfactory to the Indemnified Person; provided, however, that the Indemnifying
Person agrees (i) to promptly  indemnify the Indemnified Person for its expenses
to date, and (ii) to hold the  Indemnified  Person harmless from and against any
and all Losses  caused by or arising  out of any  settlement  of the Third Party
Action  approved by the  Indemnifying  Person or any judgment in connection with
that Third Party Action.  The  Indemnifying  Persons shall not in the defense of
the Third Party  Action  enter into any  settlement  which does not include as a
term thereof the giving by the third party claimant of an unconditional  release
of the Indemnified  Person,  or consent to entry of any judgment except with the
consent of the Indemnified Person.

           (d) Upon assumption of control of the defense of a Third Party Action
under  paragraph (c) above,  the  Indemnifying  Person will not be liable to the
Indemnified  Person  hereunder  for any  legal  or other  expenses  subsequently
incurred in connection  with the defense of the Third Party  Action,  other than
reasonable  expenses of investigation. 

           (e) If the Indemnifying  Person does not elect to control the defense
of a Third Party  Action under  paragraph  (c),  the  Indemnifying  Person shall
promptly   reimburse  the  Indemnified  Person  for  expenses  incurred  by  the
Indemnified Person in connection with defense of such Third Party Action, as and
when the same shall be incurred by the Indemnified Person.

          (f) Any person who has not assumed control of the defense of any Third
Party Action shall have the duty to cooperate  with the party which assumed such
defense.

     10.5  Miscellaneous.  Buyer's  Indemnified  Persons  shall be  entitled  to
indemnification  under Section 10.2(a) and Seller's Indemnified Persons shall be
entitled to  indemnification  under Section  10.3(a),  regardless of whether the
matter giving rise to the applicable liability,  payment,  obligation or expense
may have been  previously  disclosed  to any such  person  and  limited  only in
accordance   with  Section   10.4(a)  notice   requirements.

      10.6 Payment of  Indemnification.  Claims for  indemnification  under this
Article 10






other than  pursuant to Section 10.3 shall be paid  pursuant to the terms of the
Escrow  Agreement  with respect to amounts held  thereunder and otherwise by the
Seller, and any claims for  indemnification  under this Article 10 shall be paid
or  otherwise  satisfied  by  Indemnifying  Persons  within 30 days after notice
thereof is given by the Indemnified  Person if the Indemnifying  Person does not
dispute the claim, or within five (5) days of resolution of any disputed claim.

ARTICLE 11. MISCELLANEOUS.

      11.1 Fees and  Expenses.  Except as set forth  below,  each of the parties
will  bear  its  own  expenses  in  connection  with  the  negotiation  and  the
consummation of the transactions contemplated by this Agreement, and no expenses
of Seller  relating in any way to the  purchase  and sale of the Subject  Assets
hereunder  shall be charged to or paid by Buyer or  included  in any  account of
Seller as of the  Closing. 

      Seller  shall pay to Buyer  upon  demand a fee equal to all  Expenses  (as
defined below) (the "Termination Fee"), payable by certified check or by federal
funds  wire  transfer,  if  (i)  the  requisite  approval  of  the  transactions
contemplated hereby by Seller's stockholders is not obtained at Seller's Special
Meeting of Stockholders, (ii) the Special Meeting of Stockholders does not occur
prior  to April  30,  1997 or if it does  occur,  Seller's  stockholders  do not
approve the transactions by the requisite vote,  (iii) the conditions  specified
in Articles 6 and 7 hereof are not satisfied  (other than  regulatory  approvals
and breach by Buyer), (iv) Seller materially breaches the letter agreement dated
February 4, 1997 between Buyer and Seller (the "Letter Agreement"),  or (v) this
Agreement  is  terminated  by Seller for any reason  other than as a result of a
willful and material breach of this Agreement by Buyer; provided,  however, that
the  Termination  Fee shall be Buyer's  Expenses plus $250,000 if Seller (or any
affiliate) enters into an acquisition with a person other than Buyer, within one
year of the date of the Letter Agreement.

      For  purposes of this  Article 8,  "Expenses"  means all fees and expenses
incurred or paid by or on behalf of Buyer or any of its affiliates in connection
with the consummation of any of the  transactions  contemplated  hereby,  by the
Letter Agreement, by the Business Loan and Security/Subordination  Agreement, or
the transactions contemplated hereby or thereby, including all fees and expenses
of counsel,  investment banking firms,  accountants,  experts and consultants to
Buyer  or  any  of its  affiliates  and a  reasonable  allocation  of  corporate
overhead.  In the event that this  Agreement is so  terminated,  each party will
return all papers,  documents,  financial statements and other data furnished to
it by or with  respect to each other  party to such other party  (including  any
copies thereof made by the first party).






      11.2 Notices.  Any notice or other  communication  in connection with this
Agreement  shall be deemed to be  delivered  if in writing  (or in the form of a
telegram or facsimile  transmission)  addressed as provided  below and if either
(a) actually delivered  electronically or physically at said address,  or (b) in
the case of a letter,  three  business  days shall have  elapsed  after the same
shall have been  deposited  in the  United  States  mail,  postage  prepaid  and
registered or certified,  return receipt  requested:

   If to the Seller,  to:

Source Scientific,  Inc.
7390 Lincoln Way
Garden Grove, CA 92841 
Attention:  Richard A. Sullivan,  President 

with a copy  to:

Weiss,  Jensen,  Ellis &  Howard 
520 Pike Street, Suite 2600 
Seattle, WA 98101 
Attention: Susan L. Preston

If to BBI or Buyer, to:

Boston Biomedica, Inc.
375 West Street
West Bridgewater, MA 02379
Attention:  Richard T. Schumacher, President

with a copy to:
Brown, Rudnick, Freed & Gesmer
One Financial Center
Boston, MA  02111
Attention:   Steven R. London, Esquire and John G. Nossiff,  Jr., Esquire

and in any case at such other address as the addressee  shall have  specified by
written  notice.  All  periods  of  notice  shall be  measured  from the date of
delivery  thereof. 

      11.4  Publicity  and   Disclosures.   No  press  releases  or  any  public
disclosure,  either written or oral, of the  transactions  contemplated  by this
Agreement  shall be made without the prior  knowledge and written consent of BBI
and Seller.  Seller and BBI  acknowledge,  however,  that, as public  companies,
Seller and BBI may be legally  obligated  to make certain  public  announcements
from time to time regarding their respective  businesses,  including one or more
announcements  regarding  the  transactions   contemplated  by  this  Agreement.
Accordingly,  BBI and Seller agree that,  notwithstanding any other provision of
this  Section  11.4,   BBI  and  Seller 






shall be free to make  such  public  announcements  regarding  the  transactions
contemplated  by  this  Agreement  at  such  time  as  Buyer,  or BBI or  Seller
reasonably  believes  such  announcements  are  required in order to comply with
applicable  federal and state securities  laws,  provided that each provides the
other with a copy of such  announcement  at least 24 hours prior to its release.


      11.5 Non-Solicitation. Seller shall not, and shall use its best efforts to
cause its  affiliates,  as that term is interpreted  under the Securities Act of
1933,   as   amended,   and  each  of  its   officers,   directors,   employees,
representatives,  and agents  not to,  directly  or  indirectly  (a)  encourage,
solicit, initiate, engage or participate in discussions or negotiations with any
person or entity (other than Buyer) concerning any merger,  consolidation,  sale
of material assets, tender offer,  recapitalization,  accumulation of any equity
interest in Seller, proxy solicitation or other business  combination  involving
Seller or any Subsidiary or (b) provide any nonpublic information concerning the
business,  properties  or assets of Seller or any  subsidiary  to any  person or
entity (other than Buyer) other than in connection  with the sale of products in
the ordinary course of business. 

      11.6  Confidentiality.  The parties agree that they will keep confidential
and not disclose or divulge any confidential,  proprietary or secret information
which  they may  obtain  from  the  other in  connection  with the  transactions
contemplated  herein,  or pursuant to inspection rights granted hereunder unless
such  information  is or  hereafter  becomes  public  information. 

      11.7 Entire Agreement. This Agreement (including all exhibits or schedules
appended to this Agreement and all documents  delivered  pursuant to or referred
to in this Agreement,  all of which are hereby incorporated herein by reference)
constitutes  the  entire  agreement  between  the  parties,  and  all  promises,
representations, understandings, warranties and agreements with reference to the
subject matter hereof and  inducements  to the making of this  Agreement  relied
upon by any  party  hereto,  have  been  expressed  herein  or in the  documents
incorporated herein by reference.

     11.8 Severability.  The invalidity or  unenforceability of any provision of
this  Agreement  shall not affect the  validity or  enforceability  of any other
provision  hereof. 

      11.9  Assignability.  This Agreement may not be assigned otherwise than by
operation  of law (a) by BBI or Buyer  without  the  prior  written  consent  of
Seller,  or (b) by Seller without the prior written  consent of Buyer.  However,
any or all  rights  of BBI  and  Buyer  to  receive  performance  (but  not  the
obligations  of Buyer to Seller  hereunder)  and rights to assert claims against
Seller  hereunder,  may be  assigned  by Buyer  to (i) any  direct  or  indirect
subsidiary,  parent or other  affiliate  of Buyer,  or (ii) any person or entity
extending  credit to BBI or Buyer to finance the purchase price.  This Agreement
shall inure to the benefit of and be binding  upon the parties  hereto and their
respective successors and permitted assigns.

      11.10 Amendment. This Agreement may be amended only by a written agreement
executed by BBI,  Buyer and Seller. 

      11.11  Attorney-in-Fact.   The  Seller  hereby  irrevocably  appoints  and
designates  Richard







T.  Schumacher or his successor  unanimously  appointed in written notice by the
Seller to the Buyer (the  "Agent") as its agent and  attorney-in-fact  to accept
service of process immediately following the Closing.

      11.12  Governing Law;  Venue. 

           (a) This  Agreement  shall be governed by and construed in accordance
with the laws of the Commonwealth of Massachusetts (other than the choice of law
principles thereof), except that any representations and warranties with respect
to real and tangible  property  shall be governed by and construed in accordance
with the laws of the jurisdiction  where such property is situated if other than
in the  Commonwealth  of  Massachusetts. 

           (b) Any claim,  action, suit or other proceeding  initiated by any of
the  Sellers'  Indemnified  Persons  against  Buyer,  or by any  of the  Buyer's
Indemnified  Persons  against  any  Seller,  under or in  connection  with  this
Agreement may be asserted,  brought, prosecuted and maintained in any Federal or
state court in the  Commonwealth  of  Massachusetts,  as the party bringing such
action,  suit or proceeding shall elect,  having  jurisdiction  over the subject
matter  thereof,  and Seller and Buyer hereby waive any and all rights to object
to the laying of venue in any such court, the assertion of personal jurisdiction
over such  persons  by any such  court  and to any right to claim  that any such
court may be an inconvenient forum. Seller and Buyer hereby submit themselves to
the jurisdiction of each such court and agree that service of process on them in
any such  action,  suit or  proceeding  may be  effected  by the  means by which
notices are to be given to it under this Agreement.

      11.13   Counterparts.   This   Agreement   may  be  executed  in  multiple
counterparts,  each of  which  shall  be  deemed  in  original  but all of which
together shall constitute one and the same  instrument. 

      11.14  Effect of Table of Contents  and  Headings.  Any table of contents,
title of an article or section  heading herein  contained is for  convenience of
reference  only and shall not affect the meaning of  construction  of any of the
provisions hereof.








      IN WITNESS  WHEREOF,  the parties  hereto have caused this Agreement to be
executed in multiple  counterparts  as of the date set forth above by their duly
authorized representatives.


                         BOSTON BIOMEDICA, INC.

                         BY: ____________________________
                            Richard T. Schumacher, President

                         BBI-SOURCE SCIENTIFIC, INC.

                         BY: ____________________________
                             Name:
                             Title:

                         SOURCE SCIENTIFIC, INC.

                         BY:  ____________________________
                            Richard A. Sullivan, President








                                        ASSETS FOR CASH PURCHASE AGREEMENT

                                          List of Schedules and Exhibits


Schedule 1.1                Assets

Schedule 1.2(a)  -          Liabilities Assumed

Schedule 2.1  -             Qualification of Seller

Schedule 2.2  -             Options, Warrants and Convertible
                            Securities

Schedule 2.3  -             Subsidiaries

Schedule 2.7  -             Financial Statements of the Seller

Schedule 2.8  -             Undisclosed Liabilities

Schedule 2.9  -             Changes Since Base Balance Sheet Date

Schedule 2.10               Payment and Taxes

Schedule 2.11 -             Property, Leases and Equipment

Schedule 2.13               Inventories

Schedule 2.14 -             Intellectual Property Rights

Schedule 2.15 -             Contracts and Commitments

Schedule 2.16 -             Labor and Employee Relations

Schedule 2.17(a) -          ERISA; Compensation and Benefit Plans

Schedule 2.17(c)            ERISA; Compensation and Benefit Plans

Schedule 2.17(d)            ERISA; Compensation and Benefit Plans

Schedule 2.17(e)            ERISA; Compensation and Benefit Plans

Schedule 2.18 -             Environmental Matters

Schedule 2.19 -             Permits







Schedule 2.20               Claims

Schedule 2.21 -             Litigation

Schedule 2.22 -             Borrowings and Guarantees

Schedule 2.23 -             Banking and Financial Arrangements

Schedule 2.24 -             Insurance

Schedule 2.26               Finder's Fees

Schedule 2.27               Transactions with Interested Persons

Schedule 6.6  -             Parties to Employment Contracts

Schedule 6 7                Parties to Non-Competition Contracts

Exhibit 1.3:                Escrow Agreement

Exhibit 1.6:                Assumption of Liabilities

Exhibit 1.7:                Bill of Sale

Exhibit 6.6:                Employment Contract

Exhibit 6.7:                Non-Competition Contract




                                                                    EXHIBIT 11.1



                     BOSTON BIOMEDICA, INC. AND SUBSIDIARIES

                  STATEMENT RE COMPUTATION OF INCOME PER SHARE

                             WEIGHTED AVERAGE SHARES

<TABLE>
<CAPTION>

                                                      Year Ended December 31,
                                             ---------------------------------------
                                                1994           1995           1996
                                             ---------      ---------      ---------
<S>                                             <C>            <C>            <C>
Average Common Stock Outstanding             2,551,946      2,569,641      2,915,522

Net effect of dilutive Common Stock
  Equivalents-based on treasury stock
  method using average market price               -           548,541        424,714

Issuance of "Cheap Stock"                       35,191         33,295        

                                             ---------      ---------      ---------
                                             2,587,137      3,151,477      3,340,236
                                             =========      =========      =========


Net Income                                   $  96,528      $ 102,990      $ 481,220

Add: net reduction of interest on debt,
  less 40% taxes                                  -            27,258           -

Adjusted net income for earnings per         ---------      ---------      ---------
share calculation                            $  96,528      $ 130,248      $ 481,220 
                                             =========      =========      =========

Income (loss) per share                           0.04           0.04           0.04
                                             =========      =========      =========


</TABLE>







                                      





                                                                   EXHIBIT 21.1





                           SUBSIDIARIES OF THE COMPANY

<TABLE>
<CAPTION>

Name                                                                Jurisdiction of Organization
- ----                                                                ----------------------------
<S>                                                                 <C>

BBI Clinical Laboratories, Inc.                                     Massachusetts

BTRL Contracts and Services, Inc. (d/b/a/ Biotech Research          Massachusetts
Laboratories)

BBI-Source Scientific, Inc.                                         Massachusetts

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                     5
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                              DEC-31-1996
<PERIOD-START>                                 JAN-01-1996
<PERIOD-END>                                   DEC-31-1996
<CASH>                                         8,082,642
<SECURITIES>                                   0
<RECEIVABLES>                                  3,768,052
<ALLOWANCES>                                   352,058
<INVENTORY>                                    4,180,334
<CURRENT-ASSETS>                               16,202,120
<PP&E>                                         4,669,352
<DEPRECIATION>                                 1,970,194
<TOTAL-ASSETS>                                 19,798,314
<CURRENT-LIABILITIES>                          3,366,204
<BONDS>                                        40,948
                          0
                                    0
<COMMON>                                       15,302,438
<OTHER-SE>                                     0
<TOTAL-LIABILITY-AND-EQUITY>                   19,798,314
<SALES>                                        8,469,890
<TOTAL-REVENUES>                               15,509,296
<CGS>                                          4,252,068
<TOTAL-COSTS>                                  14,494,336
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             212,969
<INCOME-PRETAX>                                801,991
<INCOME-TAX>                                   320,771
<INCOME-CONTINUING>                            0
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   481,220
<EPS-PRIMARY>                                  .14
<EPS-DILUTED>                                  .14
        

</TABLE>


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