DYNATECH CORP
8-K, 1996-02-15
INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS
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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                Current Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934




       DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): February 5, 1996




                              DYNATECH CORPORATION
             (Exact name of registrant as specified in its charter)


MASSACHUSETTS                        0-7438              04-2258582
(State or other                   (Commission          (I.R.S. Employer
 jurisdiction of                  File Number)        Identification No.)
 incorporation)


                          3 NEW ENGLAND EXECUTIVE PARK
                      BURLINGTON, MASSACHUSETTS 01803-5087
          (Address of principal executive offices, including zip code)


                                 (617) 272-6100
              (Registrant's telephone number, including area code)



<PAGE>



ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS

On February 5, 1996, Dynatech  Corporation (the "Company") announced that it had
entered into an agreement for the sale of substantially all of the assets of its
Dynatech  Laboratories  Worldwide ("DLW")  subsidiary to Thermo  BioAnalysis,  a
subsidiary of Thermo Instrument Systems,  Inc., for approximately $43 million in
cash. DLW manufactures  automated  equipment and disposable  plasticware used in
medical research and clinical  immunodiagnostic  testing. The transaction closed
on February 7, 1996.

ITEM 5.  OTHER EVENTS

On February 7, 1996,  the  Company  announced a plan of disposal to  discontinue
operations of its  broadcast  video  equipment  and selected  data  transmission
operations. The 10 businesses marked for divestiture,  including the medical and
diagnostic  businesses   previously  announced  for  divestiture,   account  for
approximately $180 million in annual revenues.

On February 7, 1996,  the Company also announced that its Board of Directors had
authorized  the  repurchase of up to 1,000,000  shares of the  Company's  Common
Stock.  The Company intends to effect the repurchases  from time to time through
open market purchases and negotiated transactions.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

(b) Pro Forma Financial Information

    1. Unaudited Pro Forma Consolidated Balance Sheet at December 31, 1995.

     2.Unaudited Pro Forma  Consolidated  Statement of Operations for the Fiscal
Year Ended March 31, 1995.

     3.Unaudited  Pro Forma  Consolidated  Statement of Operations  for the Nine
Month Period ended December 31, 1995.

     4. Notes to the Pro Forma Financial Statements.

(c) EXHIBITS

     2  Purchase  Agreement  dated  February  5,  1996  by  and  among  Dynatech
Laboratories, Inc. and Thermo BioAnalysis Corporation

     99.1 Press Release dated February 5, 1996

     99.2 Press Release dated February 7, 1996



<PAGE>


                                   SIGNATURES

Pursuant  to the  requirements  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.



                              DYNATECH CORPORATION



Date: February 15, 1996                By: ROBERT H. HERTZ
                                       Treasurer and Chief
                                       Financial Officer



<PAGE>





                         PRO FORMA FINANCIAL INFORMATION


For purposes of this  presentation,  pro forma adjustments have been made to the
historical results of operations and balance sheet to provide  information as to
how the dispositions might have affected the results of operations and financial
position.  The unaudited pro forma consolidated balance sheet was prepared as if
all dispositions occurred as of December 31, 1995.

The  unaudited  pro forma  consolidated  statements  of  operations  assume  all
dispositions had taken place at the beginning of the corresponding  fiscal year.
This  unaudited pro forma  information  does not purport to be indicative of the
results of  operations  that would have been  obtained if the  dispositions  had
occurred at the beginning of the fiscal year  presented,  and is not intended to
be a projection of future results.

The following unaudited pro forma financial information is provided:

    1.  Pro Forma Consolidated Balance Sheet as of December 31, 1995.

    2. Pro Forma Consolidated  Statement of Operation for the nine month period
ended December 31, 1995.

    3. Pro Forma Consolidated  Statement of Operation for the fiscal year ended
March 31, 1995.

    4. Notes to the Pro Forma Financial Information.



<PAGE>

<TABLE>
<CAPTION>



                              DYNATECH CORPORATION
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                              AT DECEMBER 31, 1995
                                    IN (000'S)


                                    ACTUAL        BUSINESSES    PRO FORMA
                                    BALANCE       TO BE         BALANCE SHEET
                                    SHEET         DISPOSED        12/31/95
                                    12/31/95
ASSETS

<S>                                 <C>           <C>           <C>
Cash and cash equivalents .......   $  34,427     $             $34,427
  Accounts receivable, net ......      81,740      (33,052)      48,688
  Inventories:
   Raw materials ................      24,476      (17,208)       7,268
   Work in process ..............      12,406       (3,824)       8,582
   Finished goods ...............      18,730      (10,280)       8,450
                                    ---------     --------      --------
                                       55,612      (31,312)      24,300
                                    ---------     --------      --------
Other Current Assets ............      19,658       (5,667)      13,991
Net assets held for sale ........                   60,122       60,122
                                    ---------     --------      --------
   Total current assets .........     191,437       (9,909)     181,528
Property and equipment, net .....      32,310      (13,535)      18,775
Intangible assets, net ..........      30,649       (5,277)      25,372
Other assets ....................      11,846         (698)      11,148

                                    $ 266,242    $ (29,419)   $ 236,823
                                    =========    ==========   =========

LIABILITIES

Current liabilities:
  Notes payable and current portion
    of long - term debt .........   $   4,441    $       0    $   4,441
  Accounts payable ..............      16,539       (7,940)       8,599
  Streamlining and restructuring        8,024       (8,024)
     accrual
  Other accrued expenses ........      48,994      (13,455)      35,539
                                    ---------    ---------    ----------     
     Total current liabilities ..      77,998      (29,419)      48,579
Long-term debt ..................      14,815                    14,815
Deferred income taxes ...........         630                       630
Deferred liabilities ............         678                       678

SHAREHOLDERS' EQUITY

Common stock ....................       3,721                     3,721
Additional paid in capital ......      11,549                    11,549
Retained earnings ...............     158,853                   158,853
Cumulative foreign currency               977                       977
   adjustments
Treasury stock ..................      (2,979)                   (2,979)
                                    ---------     --------      --------
     Total shareholders' equity .     172,121                   172,121

                                    ---------     --------    ----------
                                    $ 266,242    $ (29,419)   $ 236,823
                                    =========    =========    =========
                                   
</TABLE>
<PAGE>

<TABLE>
<CAPTION>

                              DYNATECH CORPORATION
            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                       FOR THE NINE MONTHS ENDED 12/31/95
                       ( IN (000'S) EXCEPT PER SHARE DATA)

                                                                  LESS
                                          ACTUAL       LESS       BUSINESSES   PRO FORMA
                                         RESULTS    BUSINESSES    TO BE        RESULTS
                                        12/31/95    DISPOSED      DISPOSED     12/31/95

<S>                                    <C>          <C>          <C>          <C>      
Sales ..............................   $ 359,055    $   8,183    $ 135,061    $ 215,811
Cost of Sales ......................     162,815        6,654       74,026       82,135
                                       ---------    ---------    ---------   ----------

Gross Profit .......................     196,240        1,529       61,035      133,676

Selling, general and administrative      119,316        2,128       44,018       73,170
   expense
Product development expense ........      43,380          508       15,582       27,290
Purchased incomplete technology ....      16,852                                 16,852
Business restructuring activities ..         800       (2,500)       3,300
Amortization of intangibles ........       5,623          197        1,981        3,445
                                       ---------    ---------    ---------   ----------
Operating income (loss) ............      10,269        1,196       (3,847)      12,919
Interest expense ...................      (1,537)                                (1,537)
Interest income ....................       1,644                                  1,644
Other income .......................       1,052           55           55          942
                                       ---------    ---------    ---------   ----------

Income (loss)  from continuing            11,428        1,251       (3,791)      13,967
   operations income taxes

Provision (benefit) for income taxes       4,636       (1,091)                    5,727
Income (loss)  from continuing             6,792        2,342       (3,791)       8,241
   operations
Reversal of disposition loss from            647          647
   discontinued operations, net of taxes
                                       ---------    ---------    ---------   ----------

Net income (loss) ..................   $   7,439    $   2,989    $    (3,791) $   8,241
                                       =========    =========    ===========  =========


INCOME PER COMMON SHARE

Continuing operations ..............   $    0.37                              $    0.46
Extraordinary item .................        0.04
                                       ---------    ---------    ---------    ---------
                                       $    0.41                              $    0.46
                                       =========    =========    =========    =========

Weighted average number of common shares  17,930                                 17,930
                                          ======                                 ======

</TABLE>
<PAGE>

<TABLE>
<CAPTION>

                              DYNATECH CORPORATION
            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                    FOR THE FISCAL YEAR ENDED MARCH 31, 1995
                       (IN (000'S) EXCEPT PER SHARE DATA)


                                                                   LESS
                                          ACTUAL       LESS        BUSINESSES    PRO FORMA
                                          RESULTS     BUSINESSES   TO BE         RESULTS
                                          3/31/95     DISPOSED     DISPOSED      3/31/95

<S>                                    <C>          <C>          <C>         <C>
Sales ..............................   $ 488,776    $  58,689    $ 187,009   $ 243,078
Cost of Sales ......................     230,802       40,827       98,563      91,412
                                       ---------    ---------    ---------   ---------

Gross Profit .......................     257,974       17,862       88,447     151,666

Selling, general and administrative      160,878       15,918       58,632      86,329
   expense
Product development expense ........      53,045        3,515       18,944      30,585
Amortization of intangibles ........       8,471                     3,365       5,106
                                       ---------    ---------    ---------   ---------
Operating income  (loss) ...........      35,580       (1,571)       7,505      29,646
Interest expense ...................      (3,919)                               (3,919)
Interest income ....................       1,518                                 1,518
Other income .......................       1,627          262          515         850
                                       ---------    ---------    ---------   ---------
Income (loss)from continuing              34,806       (1,309)       8,020      28,095
  operations before income taxes

Provision (benefit) for income taxes      14,619           (8)       3,248      11,379
Income (loss)  from continuing            20,187       (1,301)       4,772      16,717
   operations
Extraordinary charge, net of tax ...      (1,019)                               (1,019)
                                       ---------    ---------    ---------   ---------
Net Income (loss) ..................   $  19,168    $  (1,301)   $   4,772   $  15,697
                                       =========    ==========   =========   =========
INCOME (LOSS) PER COMMON SHARE

Continuing operations ..............   $    1.13                             $    0.94
Extraordinary item .................       (0.06)                                (0.06)
                                       ---------                             ---------
                                       $    1.07                             $    0.88
                                       =========                             =========

Weighted average number of common         17,846                                17,846
   shares                              =========                             =========


</TABLE>
<PAGE>





             EXPLANATORY NOTES TO THE PRO FORMA FINANCIAL STATEMENTS



     1.Net assets  available  for sale  represent the  historical  book value at
December 31, 1995 of those businesses which the Company anticipates divesting in
the next twelve to eighteen months.

     2.The  category  "Businesses  disposed"  reflects  those entities which the
Company has disposed of at the time of this filing.

The category  "Businesses to be disposed"  includes those  businesses  which are
currently being held for sale.

The Company is currently  in the process of  calculating  costs  relating to the
disposition of the businesses.  Any gain or loss has not been anticipated in the
Pro Forma results.



                               PURCHASE AGREEMENT

                                  by and among

                         Thermo BioAnalysis Corporation,
                           Thermo BioAnalysis Limited,
                     Thermo BioAnalysis (Guernsey) Limited,
                             Thermo BioAnalysis SA,
                                  DLW Inc. and
                      BioAnalysis International Sales Inc.

                                  (as Buyers),


                         Thermo Instrument Systems Inc.

                              (as Buyers' Parent),


                                       and


                          Dynatech Laboratories, Inc.,
                            Dynatech Hong Kong Ltd.,
                          Dynatech Corporation Limited,
                        Laboratoires Dynatech, S.A.R.L.,
                      Dynatech Medical Products Limited and
                              Dynatech Corporation

                                  (as Sellers)





                                February 5, 1996



<PAGE>
                                                                            PAGE

                               PURCHASE AGREEMENT

                                      INDEX


SECTION 1.  PURCHASE AND SALE OF ASSETS                                  2

1.1      Sale of Assets                                                  2
1.2      Excluded Assets                                                 3
1.3      Assumption of Liabilities                                       3
1.4      Purchase Price and Payment                                      6
1.5      The Closing                                                     7
1.6      Delivery of Agreements of Assumption of Liabilities             7
1.7      Transfer of Subject Assets; Closing Deliveries                  8
1.8      Delivery of Records and Contracts; Further Assurances           8
1.9      Allocation of Purchase Price                                    9
1.10     Sales and Transfer Taxes                                        9

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF THE SELLERS               10

2.1      Organization and Qualification of the Sellers, Dynatech sro
         and Dynatech GmbH                                              10
2.2      Subsidiaries; Dynatech sro and Dynatech GmbH                   10
2.3      Ownership of Capital Stock of the Sellers, Dynatech sro and
         Dynatech GmbH                                                  11
2.4      Authority of the Sellers                                       11
2.5      Finder's Fee                                                   12
2.6      Status of Tangible Property                                    12
2.7      Financial Statements                                           13
2.8      Taxes                                                          14
2.9      Accounts Receivable                                            14
2.10     Absence of Certain Changes                                     14
2.11     Consents and Approvals                                         15
2.12     Intellectual Property                                          15
2.13     Litigation                                                     16
2.14     Insurance                                                      16
2.15     Environmental Matters                                          16
2.16     Employee Benefit Plans                                         17
2.17     Permits                                                        18
2.18     Customers and Distributors; Relationships                      18
2.19     Transactions with Affiliates                                   18
2.20     Inventories                                                    18
2.21     Contracts                                                      19

                                       (i)

<PAGE>


                                                                            PAGE

2.22     Compliance with Laws                                           19
2.23     Employees; Labor Matters                                       19
2.24     Backlog                                                        20
2.25     Product Quality; Warranties; Recalls                           20
2.26     Disclaimer                                                     21
2.27     Sufficient Funds                                               21
2.28     Definition of Knowledge                                        21

SECTION 3.  REPRESENTATIONS AND WARRANTIES OF THE BUYERS                21

3.1      Organization                                                   21
3.2      Ownership of the Buyers                                        21
3.3      Authority of the Buyer and Buyers' Parent                      21
3.4      Consents and Approvals                                         22
3.5      Litigation                                                     22
3.6      Finder's Fee                                                   22
3.7      No Knowledge of Breach                                         23
3.8      Sufficient Funds                                               23

SECTION 4.  CONDITIONS TO OBLIGATIONS                                   23

4.1      Conditions to Obligations of the Buyers                        23
4.2      Conditions to Obligations of the Sellers                       24

SECTION 5.  CERTAIN COVENANTS                                           25

5.1      Proprietary Information; Confidentiality                       25
5.2      No Solicitation or Hiring of Former Employees                  26
5.3      Noncompetition Agreement                                       26
5.4      Provision of Financial Information                             27
5.5      Product Warranty Matters                                       27
5.6      Transitional Use of Dynatech Names                             28
5.7      Subleases; Assignments                                         30
5.8      Certain Bonuses Payable by Dynatech                            30

SECTION 6.  MODIFICATION, WAIVER AND TERMINATION                        31

6.1      Modification and Amendments                                    31
6.2      Waivers                                                        31
6.3      Termination                                                    31
6.4      Effect of Termination                                          31


                                      (ii)

<PAGE>


                                                                       PAGE

SECTION 7.  EMPLOYEES                                                   32

7.1      Offers of Employment of Employees; Benefits                    32
7.2      Responsibility for Obligations to Non-Transferred Employees;
         Constructive Termination                                       32
7.3      No Third Party Rights                                          33
7.4      Certain Transitional Benefit Matters                           33
7.5      Effect of Transfer Regulations                                 34
7.6      Hong Kong Employees                                            34

SECTION 8.  [INTENTIONALLY OMITTED]                                     --

SECTION 9.  INDEMNIFICATION                                             35

9.1      Indemnification by the Sellers                                 35
9.2      Limitations on Indemnification by the Sellers                  36
9.3      Indemnification by the Buyers                                  37
9.4      Limitations on Indemnification by the Buyers                   38
9.5      Notice; Defense of Claims                                      38
9.6      Payment of Claims; Arbitration                                 39
9.7      Definition of Damages                                          39
9.8      Limitation on Remedies                                         40

SECTION 10.  MISCELLANEOUS                                              40

10.1     Bulk Sales Law                                                 40
10.2     Fees and Expenses                                              40
10.3     Governing Law                                                  40
10.4     Notices                                                        40
10.5     Entire Agreement                                               41
10.6     Assignability; Binding Effect                                  42
10.7     Captions and Gender                                            42
10.8     Execution in Counterparts                                      42
10.9     Amendments                                                     42
10.10    Press Releases                                                 42
10.11    Consent to Jurisdiction                                        43



                                      (iii)

<PAGE>



DISCLOSURE MEMORANDUM

EXHIBITS

1.1      Identity of Buyers and Sellers
1.6      Form of Agreement of Assumption of Liabilities and Excluded
         Liabilities
1.9      Allocation of Purchase Price
3.1      Organization of the Buyers and Buyers' Parent
5.4      Financial Information to be Provided to the Sellers
7.1      List of Employees




                                      (iv)

<PAGE>



                               PURCHASE AGREEMENT


         AGREEMENT  entered  into as of February 5, 1996 by and among (i) Thermo
BioAnalysis  Corporation,   a  Delaware  corporation   ("BioAnalysis");   Thermo
BioAnalysis  Limited,  a company  organized  under the laws of  England;  Thermo
BioAnalysis  (Guernsey) Limited, a company organized under the laws of Guernsey;
Thermo  BioAnalysis  SA,  a  French  societe  anonyme;   DLW  Inc.,  a  Virginia
corporation;  BioAnalysis International Sales Inc., a Delaware corporation (each
such entity,  a "Buyer" and such  entities,  collectively,  the  "Buyers");  and
Thermo Instrument Systems,  Inc., a Delaware corporation of which the Buyers are
direct or indirect  subsidiaries  ("Buyers' Parent");  on the one hand, and (ii)
Dynatech Laboratories, Inc., a Delaware corporation;  Dynatech Hong Kong Ltd., a
private  company  organized  under the laws of Hong Kong;  Dynatech  Corporation
Limited, a company organized under the laws of England;  Laboratoires  Dynatech,
S.A.R.L.,  a French limited  liability  company;  and Dynatech  Medical Products
Limited,  a company  organized  under the laws of  Guernsey  (each such  entity,
together with Dynatech  Laboratories  spol.  s.r.o, a limited  liability company
organized under the laws of the Czech Republic  ("Dynatech  sro"),  and Dynatech
Deutschland  GmbH, a limited  liability  company organized under the laws of the
Federal Republic of Germany  ("Dynatech GmbH"), a "Dynatech Entity" and all such
entities,  together  with  Dynatech sro and  Dynatech  GmbH,  collectively,  the
"Dynatech  Entities");  and Dynatech  Corporation,  a Massachusetts  corporation
("Dynatech"), of which the Dynatech Entities are direct or indirect wholly-owned
subsidiaries.  The Dynatech Entities (other than Dynatech sro and Dynatech GmbH)
are  sometimes   hereinafter  referred  to  collectively  as  the  "Sellers"  or
individually as a "Seller."

                               W I T N E S S E T H

         WHEREAS,   the  Dynatech  Entities  are  engaged  in  the  business  of
designing,  manufacturing and marketing IN VITRO diagnostic  instrumentation and
disposables for the worldwide immunodiagnostic market (the "Business").

         WHEREAS,  subject  to the  terms and  conditions  hereof,  each  Seller
desires to sell the  portion of the  Business  conducted  by such  Seller;  each
Seller  other than  Dynatech and Dynatech  Corporation  Limited  desires to sell
substantially  all of its properties and assets;  Dynatech  Corporation  Limited
desires  to  sell  certain  of  its  assets  and  properties  used  by  Dynatech
Corporation  Limited in the conduct of the portion of its business  conducted by
its Dynatech Laboratories division (the "UK Business");  and Dynatech desires to
sell all of the ownership interests in Dynatech sro and all of the share capital
of Dynatech GmbH; and

         WHEREAS,  subject to the terms and conditions hereof, the Buyers desire
to purchase  said  properties  and assets of the  Sellers for the  consideration
specified  herein and the  assumption by the Buyers of certain  liabilities  and
obligations of the Dynatech Entities;

         NOW,  THEREFORE,  in order to consummate  said purchase and sale and in
consideration  of the mutual  agreements  set forth herein,  the parties  hereto
agree as follows:


                                                         1

<PAGE>



SECTION 1.  PURCHASE AND SALE OF ASSETS.

         1.1 SALE OF ASSETS.  Subject to the provisions of this Agreement,  each
Seller  agrees to sell and each Buyer as identified on EXHIBIT 1.1 hereto agrees
to  purchase,  at the Closing (as  defined in Section  1.5  hereof),  all of the
properties,  assets  and rights of such  Seller of every  kind and  description,
tangible and intangible, real, personal or mixed, and wherever located, owned by
such  Seller as of the Closing  Date (as defined in Section  1.6) which are used
primarily  by such Seller in the conduct of the portion of the  Business,  or in
the case of Dynatech Corporation Ltd., the UK Business, conducted by such Seller
other than the  Excluded  Assets (as defined in Section  1.2 below),  including,
without limitation:

                  (a)  All  of  such  Seller's  machinery,   equipment,   tools,
furniture,  fixtures, motor vehicles, supplies, catalogs, product literature and
other  tangible  assets listed in SECTION  1.1(a) of the  Disclosure  Memorandum
attached hereto (the "Disclosure Memorandum");

                  (b) All of such Seller's inventories of raw materials, work in
process,  finished products and resale  merchandise  listed in SECTION 1.1(b) of
the Disclosure Memorandum;

                  (c) All of the  contracts,  agreements  and personal  property
leases to which  such  Seller is a party,  including,  without  limitation,  the
contracts,  agreements and personal  property leases listed in SECTION 1.1(c) of
the Disclosure Memorandum, excluding in the case of Dynatech Corporation Limited
contracts  and  agreements  which  are  not  related  to  the UK  Business  (the
"Contracts");

                  (d) All of such  Seller's  patents,  trademarks,  trade  names
(except as set forth in Section 1.2(d) hereof), service marks, copyrights, trade
secrets, technology,  inventions,  proprietary information,  know-how, licenses,
data,  designs,  drawings,  specifications  and other documents related thereto,
including  without  limitation  those  items  listed  in  SECTION  1.1(d) of the
Disclosure Memorandum;

                  (e) All of such Seller's  accounts,  accounts  receivable  and
notes receivable, excluding in the case of Dynatech Corporation Limited accounts
and notes receivable booked with respect to the portion of Dynatech  Corporation
Limited's business that is not a part of the UK Business;

     (f) All of such Seller's licenses, permits and regulatory approvals (to the
extent transferable) listed in SECTION 2.17 of the Disclosure Memorandum;

     (g) Except as set forth in Section 1.2(b) below, all of such Seller's books
and records, wherever located, that relate primarily to the Business;

     (h) All of such Seller's other  intangible  assets not described above that
are primarily related to the Business;

                                                         2

<PAGE>



     (i) All of the issued and outstanding share capital of Dynatech GmbH and of
Dynatech sro (collectively, the "Shares"); and

                  (j) Dynatech Laboratories,  Inc.'s lock-box maintained at Bank
of Boston;  Dynatech Corporation Limited's lock-box maintained at Barclays Bank;
and Laboratoires Dynatech S.A.R.L.'s lock-box maintained at BNP.

         The  assets,  property  and  rights  of the  Sellers  to be sold to and
purchased  by the  Buyers  under  this  Agreement  (including  the  Shares)  are
hereinafter sometimes referred to as the "Subject Assets."

     1.2  EXCLUDED  ASSETS.  Notwithstanding  anything in this  Agreement to the
contrary, there shall be excluded from the Subject Assets those assets listed on
SECTION 1.2 of the Disclosure Memorandum and the following property:

                  (a) Cash and intercompany accounts between any of the Dynatech
Entities  (including  Dynatech  sro and  Dynatech  GmbH)  on the one  hand,  and
Dynatech or any of its subsidiaries (other than the Dynatech Entities (including
Dynatech sro and Dynatech GmbH)) on the other hand;

                  (b)  Each  Seller's  corporate  seals,   corporate  franchise,
Articles of Incorporation (or comparable charter document) ("Charter"), By-laws,
stock record books,  corporate  record books  containing  minutes of meetings of
directors and stockholders and such other records as have to do exclusively with
such Seller's organization or stock capitalization (collectively, the "Corporate
Records");

     (c) All assets of Dynatech Corporation Limited which are not used primarily
in the UK Business; and

                  (d) All of  Dynatech's  and each  Seller's  right,  title  and
interest in the name "Dynatech", other than the rights granted to the Buyers for
the six-month  period  commencing on the Closing Date in accordance with Section
5.6 hereof.

         The assets,  property and rights of the Sellers to be excluded from the
sale to the Buyers shall be referred to as the "Excluded Assets."

         1.3  ASSUMPTION  OF  LIABILITIES.  Upon the sale  and  purchase  of the
Subject Assets,  and subject to the provisions of this Agreement,  each Buyer as
identified  on EXHIBIT  1.1 hereto  agrees to assume and to pay or to  discharge
when  due  in  accordance  with  their  respective  terms,  only  the  following
liabilities and obligations (collectively, the "Liabilities"):

                  (a) The liabilities  and obligations of the Dynatech  Entities
shown or reflected and reserved against on the Base Balance Sheet (as defined in
Section 2.7 hereof) (but

                                                         3

<PAGE>



not in  amounts  in  excess  of the  amounts  so shown,  reflected  or  reserved
against), excluding any of such liabilities and obligations discharged since the
date of the Base Balance Sheet;

                  (b) All liabilities  and obligations of the Dynatech  Entities
incurred in connection with the Business in the ordinary course of such business
from and after the date of the Base  Balance  Sheet to the  Closing  Date to the
extent such  liabilities or obligations (i) have not been satisfied prior to the
Closing Date and (ii) are shown or reflected and reserved against on the Closing
Net Asset Statement (as defined in Section 1.4(b) hereof) (but not in amounts in
excess of the amounts so shown, reflected or reserved against);

                  (c)  Liabilities  and  obligations  with respect to product or
service warranties (excluding product liability claims) for products or services
of the Business sold or delivered by any of the Dynatech  Entities  prior to the
Closing; and

                  (d) All liabilities  and obligations of the Dynatech  Entities
under the Contracts listed in SECTION 1.1(c) of the Disclosure Memorandum to the
extent that such liabilities or obligations  accrue subsequent to the Closing or
relate to the period of time after the Closing.

         Notwithstanding  the  foregoing,  the Buyers shall not assume and shall
not pay any of the following liabilities or obligations:

              (i) Taxes (as defined in Section 2.8 hereof) of Dynatech or of any
Dynatech  Entity  relating to periods before the Closing or incurred by Dynatech
or by any of the Dynatech  Entities in  connection  with this  Agreement and the
transactions provided for herein), including any liability for Taxes arising out
of  the  inclusion  of  any  of  the  Dynatech  Entities  in  any  group  filing
consolidated,  combined or unitary tax returns or arising out of any  transferee
liability,  it being specifically  agreed that the Buyers shall not be deemed to
be the Sellers' transferees with respect to any Tax liability;

                (ii) Liabilities of Dynatech or of any Dynatech Entity under any
Environmental  Law (as defined in Section  2.15  hereof)  (A)  arising  from the
generation,  transportation,  storage, treatment,  disposal or management of any
Hazardous  Waste (as defined in Section  2.15) at any facility of Dynatech or of
any Dynatech  Entity or at any site to which any such Hazardous  Waste generated
by Dynatech or by any Dynatech Entity was transported  prior to the Closing Date
or (B)  otherwise  resulting  from the conduct of the  Business by any  Dynatech
Entity prior to the Closing Date;

        (iii) Liabilities in connection with or relating to any and all actions,
suits, claims, proceedings,  demands,  assessments and judgments, costs, losses,
liabilities,  damage,  deficiencies and expenses  (whether or not arising out of
third-party  claims) in connection  with any litigation or any  governmental  or
administrative  proceedings to the extent arising out of events  occurring prior
to the Closing Date;


                                                         4

<PAGE>



     (iv)  Liabilities  and  obligations  of any of the  Dynatech  Entities  for
product  liability  claims with respect to products  sold by any of the Dynatech
Entities prior to the Closing Date;

     (v)  Liabilities  and  obligations  of Dynatech  or of any of the  Dynatech
Entities  with  respect  to any  current,  retired  or former  employee  of such
Dynatech  Entities,  including  liabilities  for salary,  bonuses,  commissions,
contingent  payments and other  compensation for services  provided prior to the
Closing Date,  and including  liabilities  for worker's  compensation  and other
employee claims, grievances or other proceedings arising out of events occurring
prior to the Closing Date (but excluding any liabilities for accrued vacation on
the books of Dynatech GmbH, which shall be assumed);

     (vi)  Liabilities  and  obligations  of Dynatech or of any of the  Dynatech
Entities under any pension, benefit, profit sharing, retirement, stock, deferred
compensation,  welfare, insurance,  disability,  salary continuation (other than
the salary  continuation  obligations  assumed by the Buyers pursuant to Section
7.1 hereof) and other  similar  plans,  programs and  agreements  maintained  by
Dynatech or by any Dynatech Entity at any time in the past; or

     (vii) Any other  liabilities  and  obligations of Dynatech or of any of the
Dynatech Entities  (including without  limitation any liabilities,  penalties or
other  costs  which may be imposed  on any of the Buyers or any of the  Dynatech
Entities  arising  out of any  violation  of  any  applicable  law by any of the
Dynatech  Entities  prior to the Closing Date and/or any failure by any Dynatech
Entity to have  obtained  and have in effect at all  relevant  times any permit,
license,  approval or  authorization  necessary  to conduct its business as such
business was conducted prior to the Closing Date),  except for the  Liabilities,
as defined in Sections 1.3(a) through Section 1.3(d) above.

         The  liabilities  and  obligations  which are not assumed by the Buyers
under this  Agreement  are  hereinafter  sometimes  referred to as the "Excluded
Liabilities."  Upon the sale and purchase of the Subject Assets,  and subject to
the  provisions of this  Agreement,  Dynatech and the Sellers  hereby  expressly
agree  to  assume  and to pay  or to  discharge  when  due  any of the  Excluded
Liabilities to the extent that such Excluded  Liabilities  may be liabilities or
obligations of Dynatech sro or Dynatech  GmbH.  Any Excluded  Liability to which
any Buyer shall succeed as a matter of law  notwithstanding the express terms of
this  Agreement  shall,  as between the parties,  nonetheless be deemed to be an
Excluded  Liability,  which, as between the Parties shall be the sole obligation
of Dynatech and the Sellers.  The  assumption of said  Liabilities  by any party
hereunder  shall not  enlarge any rights of third  parties  under  contracts  or
arrangements with the Buyers or the Sellers and nothing herein shall prevent any
party  from  contesting  in  good  faith  with  any  third  party  any  of  said
Liabilities.


                                                         5

<PAGE>



         1.4      PURCHASE PRICE AND PAYMENT.

                  (a) In  consideration of the sale by the Sellers to the Buyers
of  the  Subject  Assets,  subject  to  the  assumption  by  the  Buyers  of the
Liabilities and the satisfaction of all of the conditions  contained herein, the
Buyers  agree that at the  Closing  they will  deliver to an account or accounts
designated in writing by Dynatech a bank cashier's  check(s) or wire transfer(s)
of immediately  available funds in the aggregate  amount of Forty-Three  Million
Dollars ($43,000,000) (the "Purchase Price"), subject to adjustment as set forth
in Section  1.4(b)  hereof.  The  Purchase  Price shall be  allocated  among the
Sellers in the manner provided in Section 1.9 hereof and, to the extent that any
funds  representing any portion of the aggregate  Purchase Price so allocated to
the  acquisition  of the  Subject  Assets or Shares  from any Seller are in fact
received from the Buyers by Dynatech,  Dynatech  shall receive such funds solely
as agent for such Seller.

                  (b) Within 30 calendar days after the Closing,  Dynatech shall
deliver to BioAnalysis a statement  setting forth the Net Tangible Assets of the
Business  (as  defined  below)  of the  Closing  Date  (the  "Closing  Net Asset
Statement"). BioAnalysis shall provide Dynatech and its accountants and advisors
with access  (during  BioAnalysis'  normal  business  hours and upon  reasonable
notice) to all data,  workpapers and other information  reasonably  required for
Dynatech to prepare the Closing Net Asset  Statement.  The Purchase  Price shall
then be either (i)  increased by the amount by which the Net Tangible  Assets of
the Business as set forth on the Closing Net Asset Statement exceed $13,500,000;
or (ii)  decreased by the amount by which  $13,500,000  exceeds the Net Tangible
Assets of the  Business as set forth on the Closing  Net Asset  Statement  (such
amount, as the case may be, the "Purchase Price Adjustment"); provided, however,
that no Purchase Price  Adjustment will be due or payable to any party hereto in
the event that the difference between the Net Tangible Assets of the Business as
set  forth on the  Closing  Net Asset  Statement  and  $13,500,000  is less than
$200,000.

                  (c) For purposes of this Section 1.4, the Net Tangible  Assets
of the Business shall equal the value of the tangible Subject Assets  (excluding
the value of the Shares but  including  the value of the assets of Dynatech  sro
and Dynatech GmbH (collectively,  the "Incorporated Assets") as reflected on the
Closing Net Asset Statement less the Liabilities,  and the value of the tangible
Subject  Assets shall be  determined  in  accordance  with  Dynatech's  standard
accounting practices and policies, provided, however that (i) such practices and
policies  shall  conform in all  material  respects to United  States  generally
accepted  accounting  principles  and (ii) such  practices and policies shall be
applied on a basis  consistent  with  Dynatech's  practices  for prior  year-end
audits.

                  (d) Dynatech shall provide BioAnalysis and its accountants and
advisors  with  access  (during   Dynatech's  normal  business  hours  and  upon
reasonable notice) to all data,  workpapers and other information from which the
Closing Net Asset Statement was prepared.  If BioAnalysis  notifies  Dynatech in
writing of any disagreement  with respect to any amount set forth in the Closing
Net Asset Statement submitted by Dynatech within the 45 days after the

                                                         6

<PAGE>



receipt thereof by BioAnalysis,  then  BioAnalysis and Dynatech shall attempt to
resolve any such  disagreement  in good faith and on a reasonable  schedule.  If
BioAnalysis  does not provide such a written  notice to Dynatech  within 45 days
after the receipt of the Closing Net Asset  Statement  by  BioAnalysis  (as such
period may be  extended  pursuant  to Section 5.8 hereof) , then the Closing Net
Asset  Statement  submitted  by  Dynatech  shall be  deemed  to be  accepted  by
BioAnalysis  and shall be final and  binding  on the  parties  for  purposes  of
determining the Purchase Price Adjustment (if any). If the parties are unable to
agree on the Closing Net Asset Statement or the Purchase Price Adjustment by the
close of business  on the 120th day after the  Closing,  then the parties  shall
retain an internationally recognized accounting firm (which shall not be Coopers
& Lybrand LLP or Arthur  Andersen  LLP) to resolve any dispute  between them and
the Closing Net Asset Statement and the Purchase Price Adjustment  determined by
such accounting firm shall be binding upon the parties. BioAnalysis and Dynatech
shall each pay one-half of such accounting firm's fees and expenses.

                  (e) In the event an adjustment  to the Purchase  Price is made
or resolved  pursuant to the terms of this Section 1.4, the  following  payments
shall be made:

     (i) if the  Purchase  Price has been  adjusted  upward,  the Buyers  shall,
within two (2) business  days of the  resolution of such  adjustment,  pay to an
account or accounts designated in writing by Dynatech such adjustment amount; or

     (ii) if the Purchase  Price has been  adjusted  downward,  Dynatech  shall,
within two (2) business  days of the  resolution of such  adjustment,  pay to an
account or accounts designated in writing by BioAnalysis such adjustment amount.

         1.5 THE CLOSING.  The closing of the purchase and sale  provided for in
this Agreement  (herein called the "Closing") shall take place at the offices of
Thermo Electron Corporation,  81 Wyman Street,  Waltham,  Massachusetts 02254 at
10:00  a.m.,  local  time,  on the  later of (i)  February  7, 1996 and (ii) the
satisfaction  of all other  conditions  to  Closing  as set  forth in  Section 5
hereof,  or at such  other  time or date  as may be  mutually  agreeable  to the
parties  hereto (the date on which the Closing  occurs being  herein  called the
"Closing  Date").  All transactions at the Closing shall be deemed to take place
as of the end of the business day in Boston, Massachusetts,  on the Closing Date
simultaneously  and no transaction shall be deemed to have been completed and no
document  or  certificate  shall be  deemed  to have  been  delivered  until all
transactions  are  completed and all  documents  (other than the Local  Transfer
Agreements (as defined in Section 10.5)) are delivered.

         1.6  DELIVERY  OF  AGREEMENTS  OF  ASSUMPTION  OF  LIABILITIES.  At the
Closing,  each Buyer shall  deliver or cause to be delivered to the  appropriate
Seller,  as  identified  on Exhibit  1.1, an  Agreement  for  Assumption  of the
Liabilities by such Buyer in substantially  the form of Exhibit 1.6 hereto,  and
Dynatech  shall deliver or cause to be delivered to BioAnalysis an Agreement for
Assumption  of the Excluded  Liabilities  of Dynatech  sro and Dynatech  GmbH by
Dynatech in substantially the form of Exhibit 1.6 hereto.

                                                         7

<PAGE>



         1.7      TRANSFER OF SUBJECT ASSETS; CLOSING DELIVERIES.

                  (a) At the Closing,  each Seller shall  deliver or cause to be
delivered to the  appropriate  Buyer,  as  identified  on EXHIBIT 1.1,  good and
sufficient  instruments  of  transfer  transferring  to such  Buyer  all of such
Seller's  right,  title and  interest in and to all the Subject  Assets owned by
such  Seller.  Such  instruments  of transfer  (a) shall be in the form and will
contain  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 reasonably satisfactory to the Buyers and their counsel, and (c) shall
effectively vest in the appropriate Buyer all of the appropriate Seller's right,
title and  interest in and to the Subject  Assets,  free and clear of all liens,
restrictions and encumbrances other than the Liabilities.

                  (b) At the  Closing,  in  addition to the taking of such other
actions as may be provided in this  Agreement,  each party  shall  deliver  such
closing  certificates,  documents  and opinions of counsel as may be  reasonably
requested by counsel to the other parties hereto.

         1.8      DELIVERY OF RECORDS AND CONTRACTS; FURTHER ASSURANCES.

                  (a) At the time of the  Closing,  subject  to  Section  1.8(b)
below,  each Seller shall  deliver or cause to be  delivered to the  appropriate
Buyer all of such Seller's leases, contracts, commitments, agreements and rights
which are  included in the Subject  Assets,  with such  assignments  thereof and
consents  to  assignments  as are  necessary  to assure  such  Buyer of the full
benefit of the same. Each Seller shall also deliver to the appropriate  Buyer at
the time of the Closing all of such Seller's business records, copies of all Tax
returns,  books and other data  relating to the  Business  (or the UK  Business)
(except  corporate  records and other  property of such  Seller  excluded  under
Section 1.2(b)), and each Seller shall take all requisite steps to put the Buyer
in actual  possession and operating control of the Subject Assets of the Seller.
For a period of six (6) years after  Closing,  or such  longer  period as may be
reasonably requested by Dynatech, upon written request of Dynatech,  BioAnalysis
or its successor  shall make or cause to be made  available to Dynatech,  as the
case may be, (i) all books and records  included in the Subject  Assets that are
needed by any Seller or any successors or assigns for a valid business  purpose,
and permit  Dynatech  and its agents to inspect  and copy such books and records
and (ii) assistance in arranging discussions with officers, employees and agents
of the Buyers and their parent or affiliate companies on matters which relate to
the Business as previously conducted by the Sellers and the same as continued by
the  Buyers,  provided  that  all  such  inspection  or  assistance  shall be at
reasonable times as may be mutually agreed upon by such BioAnalysis and Dynatech
and shall be at Dynatech's sole cost and expense.

                  (b) If an attempted sale, conveyance,  assignment, transfer or
delivery of any contracts, claims, leases, commitments,  franchises, privileges,
permits,  consents,  certificates,  licenses  or any  other  assets,  rights  or
benefits to be sold, conveyed, assigned,  transferred and delivered to any Buyer
which are included in the Subject Assets  (collectively,  the "Rights") would be
ineffective  without the consent of any other  person,  and such consent has not
been

                                                         8

<PAGE>



obtained on or before the Closing Date,  this Agreement  shall not constitute an
assignment  or an  attempted  assignment  of such  Right if such  assignment  or
attempted  assignment would constitute a breach thereof or be unlawful.  In such
case,  each Seller at and after the Closing  will,  at the request and under the
direction  of the  Buyers  and in the name of such  Seller or  otherwise  as the
Buyers  shall  specify,  take or cause to be taken  all such  action  (including
without  limitation the appointment of the Buyers as  attorney-in-fact  for such
Seller,  but with powers limited to the specific purposes  contemplated  hereby)
and do or cause to be done all such things as shall in the reasonable opinion of
the Buyers or their  counsel be  necessary  or proper to (a) assure  that Rights
shall be preserved for the benefit of the Buyers,  and (b) facilitate receipt by
the Buyers of the consideration to which the Sellers would otherwise be entitled
in and under all Rights,  which  consideration shall be held for the benefit of,
and shall be delivered to, the Buyers. In order to accomplish the foregoing, the
Sellers may designate the Buyers as subcontractors to perform obligations of any
Seller under any Rights.  The Seller whose Rights are being  assigned shall also
use  commercially  reasonable  efforts to obtain,  as soon as  practicable,  the
consent  of each  such or other  person in all cases in which  such  consent  is
required,  and such  Seller  and the Buyers  will  cooperate  in any  reasonable
arrangement designed to enable such Seller to perform its obligation  hereunder,
and to provide for the  assumption  by the  appropriate  Buyer of the  benefits,
risks and burdens of any such  agreement.  Nothing in this Section  shall in any
way  diminish  the  obligations  hereunder  of the  Sellers to use  commercially
reasonable  efforts to obtain all  consents and  approvals  and to take all such
other  actions  prior to or at Closing as are necessary to enable the Sellers to
convey or assign valid title to all the Subject Assets to the Buyers.

                  (c) The  Sellers  from time to time  after the  Closing at the
request  of the Buyers and  without  further  consideration  shall  execute  and
deliver  further  instruments  of transfer  and  assignment  and take such other
action as the Buyers may  reasonably  require to more  effectively  transfer and
assign to, and vest in, the Buyers each of the Subject Assets.

         1.9  ALLOCATION  OF PURCHASE  PRICE.  The Purchase  Price and all other
capitalized  costs  of  consummating  the  transactions   contemplated  by  this
Agreement  shall be allocated  among the Subject  Assets as set forth on EXHIBIT
1.9 hereto. Such allocation shall be binding upon the Buyers and the Sellers for
all purposes (including financial accounting purposes,  financial and regulatory
reporting purposes and tax purposes). The Buyers and the Sellers also each agree
to report all federal, state, foreign, provincial and local income and other tax
consequences  of the  transactions  contemplated  hereby  consistently  with the
foregoing  and  agree  not to take  any  position  inconsistent  therewith  upon
examination  of any tax  return,  in any  refund  claim,  in any  litigation  or
otherwise.

         1.10 SALES AND TRANSFER TAXES.  Notwithstanding  any other provision of
this  Agreement,  all sales,  transfer or similar  taxes  required to be paid in
respect of the conveyances,  assignments or transfers  contemplated hereby shall
be paid by the Buyers.


                                                         9

<PAGE>



SECTION 2.  REPRESENTATIONS AND WARRANTIES OF THE SELLERS.

         The Sellers  hereby  represent  and warrant to the Buyers,  jointly and
severally, that except as set forth in the Disclosure Memorandum (specifying the
relevant subsection of this Section 2):

         2.1  ORGANIZATION AND  QUALIFICATION  OF THE SELLERS,  DYNATECH SRO AND
DYNATECH GMBH. Each Seller, and each of Dynatech sro and Dynatech GmbH, has been
duly  organized,  validly  existing and in good  standing  under the laws of the
jurisdiction  set  forth  next to its  name  in  SECTION  2.1 of the  Disclosure
Memorandum  with  full  corporate  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 currently conducted. The
copies of the Articles of  Association  of Dynatech GmbH (as amended to date and
as certified by its  Commercial  Registry)  and the Prague  Commercial  Register
Extract of Dynatech sro (as amended to date),  each heretofore  delivered to the
Buyers'  counsel,  are  complete  and  correct,  and no  amendments  thereto are
pending.  Each  Seller,  and each of Dynatech  sro and  Dynatech  GmbH,  is duly
qualified and to conduct its business and own its property in all  jurisdictions
wherein the character of the properties owned or leased by them or the nature of
the  activities  thereof makes such  qualification  necessary,  except where the
failure  to be so  qualified  would not have a  material  adverse  effect on the
Subject Assets or the Business or financial  condition of the Dynatech  Entities
(excluding the portion of Dynatech Corporation  Limited's business that is not a
part of the UK Business) taken as a whole (a "Material Adverse Effect").

         2.2      SUBSIDIARIES; DYNATECH SRO AND DYNATECH GMBH.

                  (a) No  Seller  has any  subsidiaries  except  as set forth in
SECTION 2.2 of the Disclosure Memorandum.  No Seller owns or has any interest in
any corporation, partnership or joint venture except as set forth in SECTION 2.2
of the Disclosure Memorandum.

                  (b) The registered  capital of Dynatech sro amounts to 100,000
Czech  crowns,  all of  which  are  fully  paid  and  registered  in the  Prague
Commercial  Register.  The books and records of Dynatech sro,  including without
limitation  the books of account and minute  books,  are complete and correct in
all respects except as would not have a material  adverse effect on the business
of Dynatech sro.

                  (c) The  registered  share capital of Dynatech GmbH amounts to
DM  2,000,000,  and consists of two shares in the nominal  amounts of DM 100,000
and DM  1,900,000,  all of which are fully  paid up.  The books and  records  of
Dynatech  GmbH,  including  without  limitation  the books of account and minute
books,  are  complete  and  correct in all  respects  except as would not have a
material adverse effect on the business of Dynatech GmbH.


                                                        10

<PAGE>



         2.3  OWNERSHIP  OF  CAPITAL  STOCK  OF THE  SELLERS,  DYNATECH  SRO AND
DYNATECH  GMBH.  The  beneficial  and  record  owner  of all of the  issued  and
outstanding  shares (or registered  share  capital,  as the case may be) of each
Dynatech  Entity  is set  forth in  SECTION  2.3 of the  Disclosure  Memorandum.
Without limiting the generality of the foregoing,  Dynatech is the lawful record
and beneficial owner of all of the Shares, free and clear of any liens,  claims,
restrictions (including  restrictions upon transfer),  equities or encumbrances.
All of the outstanding  Shares have been duly authorized and validly issued, are
fully   paid,    nonassessable    and   free   of   preemptive   rights   and/or
sub-participations.   There  are  no  options,   warrants,   contracts,   calls,
commitments or demands of any nature  relating to the Shares,  or to authorized,
issued or  unissued  ownership  interests  in Dynatech  sro or share  capital of
Dynatech GmbH.

         2.4 AUTHORITY OF THE SELLERS.  Each Seller has all necessary  authority
and  power to enter  into  this  Agreement  and to  carry  out the  transactions
contemplated  hereby. The execution,  delivery and performance by each Seller of
this  Agreement  and  the  consummation  by  each  Seller  of  the  transactions
contemplated  hereby have been duly authorized by all necessary corporate action
of each  Seller,  and no other  action on the part of each Seller is required in
connection  therewith.  This  Agreement  constitutes,  and the other  agreements
executed by each Seller in connection herewith constitute, the valid and binding
obligations of each Seller,  enforceable  against each Seller in accordance with
their  respective  terms.  Except as set forth in SECTION 2.11 of the Disclosure
Memorandum,  the  execution,  delivery  and  performance  by each Seller of this
Agreement  and the  other  agreements  executed  by each  Seller  in  connection
herewith  do  not,  and  the  performance  by each  Seller  of the  transactions
contemplated hereby and thereby, will not:

     (i) violate any  provision  of the  Charter or By-laws of such  Seller,  of
Dynatech sro or of Dynatech GmbH;

     (ii) violate any laws of the United States, or any country,  state or other
jurisdiction,  or any order,  judgment or decree,  applicable to such Seller, to
Dynatech  sro or to Dynatech  GmbH or require  such  Seller or  Dynatech  sro or
Dynatech GmbH to obtain any  approval,  consent or waiver of, or make any filing
with,  any  person  or  entity  (governmental  or  otherwise)  that has not been
obtained or made;

     (iii)  with or  without  notice  or  lapse  of time or  both,  result  in a
violation or any breach of or constitute a default under, or require the consent
or  approval  of any third party  under,  any  material  note,  bond,  mortgage,
indenture,  contract,  agreement,  lease,  license,  permit,  franchise or other
instrument  or  obligation to which such Seller or Dynatech sro or Dynatech GmbH
is a party or to which any of the Subject  Assets  (including the Shares and the
Incorporated Assets) are subject; or

     (iv) result in the creation or imposition of any lien, encumbrance, charge,
claim  or  restriction  upon  any of  the  Subject  Assets,  the  Shares  or the
Incorporated Assets.

                                                        11

<PAGE>



         2.5 FINDER'S FEE. No Dynatech  Entity 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,  except for amounts payable to The
Bridgeford Group which shall be paid by the Sellers.

         2.6      STATUS OF TANGIBLE PROPERTY.

     (a) Owned Real Property. No Dynatech Entity owns any real property.

     (b) LEASED  REAL  PROPERTY.  SECTION  2.6(b) of the  Disclosure  Memorandum
contains a complete  and  correct  list of the  addresses  of all real  property
leased by each Dynatech Entity (the "Leased Real Property").

     (i)  LEASES.  True,  complete  and  accurate  copies of all leases or other
agreements  ("Leases")  under  which each  Dynatech  Entity  leases  Leased Real
Property,  together with all amendments thereto,  have been heretofore delivered
to the  Buyers  and all such  Leases are  identified  on  SECTION  2.6(b) of the
Disclosure Memorandum.  Each such Lease has been duly authorized and executed by
the parties  thereto and is in full force and effect.  No Dynatech  Entity is in
default under any of such Leases,  nor has any event occurred which, with notice
or passage of time, or both, would give rise to a default.

     (ii)  TAXES.  There  are no  taxes or  betterment  assessments  other  than
ordinary real estate taxes pending or payable against the Leased Real Property.

     (iii) UTILITIES. All water, sewer, gas, electric,  telephone,  drainage and
other utility  equipment  required by law or necessary for the current operation
of the Leased Real  Property  are  installed  and  connected  to the Leased Real
Property and such  utilities  are available in  sufficient  quantities  and such
connections  are adequate to service the Leased Real Property as it is currently
improved and operated.

     (iv)  CONDITION.  Except as set forth on SECTION  2.6(b) of the  Disclosure
Memorandum, to the best of the Sellers' knowledge, there are no material defects
in the physical or mechanical condition of any improvements  constituting a part
of the Leased  Real  Property,  and all such items are in  reasonable  operating
condition and repair, normal wear and tear excepted.

     (v)  COMPLIANCE  WITH LAW;  GOVERNMENT  APPROVALS.  No Dynatech  Entity has
received any notice from any governmental authority of any violation of any law,
ordinance,  regulation,  license, permit or authorization issued with respect to
any of the Leased Real Property that has not been corrected  heretofore,  and no
such violation exists which could have a Material Adverse Effect.

     (vi) REGULATORY PROCEEDINGS.  To the best of the Sellers' knowledge,  there
are no  condemnation,  environmental,  zoning,  expropriation,  reserve or other
land-use

                                                        12

<PAGE>



regulation proceedings either instituted or planned to be instituted which would
detrimentally  affect the use and  operation of the Leased Real  Property in the
manner in which the Leased Real Property is now used and operated.

                  (c)  PERSONAL  PROPERTY.  Each  Dynatech  Entity  has good and
valid, legal title to all of the personal property  identified in SECTION 1.1(a)
of the  Disclosure  Memorandum as being owned by such Dynatech  Entity,  in each
case subject to no mortgage,  hypothec,  attachment, lien, pledge, option, title
retention,  conditional  sale or other security  interest,  restriction,  claim,
charge or other  encumbrance  of any kind,  and each Seller has the complete and
unrestricted right to sell assign,  transfer,  convey and deliver such assets to
the Buyers at the Closing without any restrictions of any kind.

                  (d) NATURE OF ASSETS.  Except as identified in SECTION  2.6(d)
of the Disclosure  Memorandum (and other than (i) Excluded Assets, (ii) licenses
and permits that are by their terms or as a matter of law not  transferable  and
that are  identified  in SECTION  2.17 of the  Disclosure  Memorandum  and (iii)
services  and  benefits  provided  to the  Dynatech  Entities by Dynatech or its
affiliates other than other Dynatech  Entities and identified in SECTION 2.19 of
the  Disclosure  Memorandum),  the Subject  Assets and the  Incorporated  Assets
include all of the assets,  properties  and rights used in the  operation of the
Business  as  presently  conducted,  and,  with the  exception  of assets  sold,
consumed or  otherwise  disposed of in the ordinary  course,  include all of the
assets reflected on the Base Balance Sheet.

     2.7 FINANCIAL STATEMENTS.  The Buyers have received the following financial
statements,  copies of which are attached hereto as a part of SECTION 2.7 of the
Disclosure Memorandum:

     (i) unaudited  consolidated  financial  statements of the Dynatech Entities
(excluding the portion of Dynatech Corporation Limited business that is not part
of the UK Business) for its fiscal years ending on March 31, 1994 and 1995; and

     (ii) an  unaudited  consolidated  balance  sheet of the  Dynatech  Entities
(excluding the portion of Dynatech  Corporation  Limited's  business that is not
part of the UK Business) as of September 30, 1995 (the "Base Balance Sheet") and
a related statement of income for the period then ended.

         Said  financial  statements  have  been  prepared  in  accordance  with
Dynatech's  standard  accounting policy for its consolidated  operations,  which
policy conforms in all material  respects with United States generally  accepted
accounting principles ("GAAP"),  applied consistently during the periods covered
thereby and present  fairly the  financial  condition of the  Dynatech  Entities
(excluding the portion of Dynatech  Corporation  Limited's  business that is not
part of the UK Business) at the dates of said  statements and the results of its
operations for the periods covered thereby; provided,  however, that none of the
financial  statements  have  footnotes  required under GAAP and the Base Balance
Sheet is subject to normal year-end adjustments.

                                                        13

<PAGE>



         2.8 TAXES.  Each Seller,  and Dynatech sro and Dynatech GmbH has timely
filed all  federal or  foreign,  as the case may be,  income Tax returns and all
other material state,  local and foreign Tax returns and reports  required to be
filed by it through the date hereof.  SECTION 2.8 of the  Disclosure  Memorandum
indicates  those Tax returns that are currently the subject of an audit.  Except
as set forth in SECTION 2.8 of the Disclosure Memorandum, no taxing authority or
agency is now  asserting  or, to the  knowledge of the Sellers,  threatening  to
assert  against  any  Seller  any  material  deficiency  or  material  claim for
additional Taxes or interest thereon or penalties in connection therewith. There
are no liens for Taxes upon the assets of any  Seller or of  Dynatech  sro or of
Dynatech GmbH. For purposes of this Agreement,  "Tax" means any federal,  state,
provincial,   local  or  foreign  income,  gross  receipts,   license,  payroll,
employment,  excise,  severance,  stamp, occupation,  premium, windfall profits,
environmental  (including  without  limitation  Taxes under Code  Section  59A),
customs duties, capital stock, franchise, profits, withholding,  social security
(or similar), unemployment, disability, real property, personal property, sales,
use,  transfer,  registration,  value  added,  alternative  or  add-on  minimum,
estimated,  or  other  tax or  other  fiscal  charges  of any  kind  whatsoever,
including without limitation any interest, penalty, or addition thereto, whether
disputed or not).

         2.9 ACCOUNTS RECEIVABLE.  SECTION 2.9 of the Disclosure Memorandum sets
forth the accounts receivable of each Dynatech Entity and aging information with
respect  to such  accounts  receivable  as at the dates  indicated.  All of such
accounts  receivable  have arisen and were booked in the ordinary  course of the
Dynatech  Entities'  business and represent bona fide amounts due as a result of
products actually sold or services actually provided by the Dynatech Entities.

     2.10 ABSENCE OF CERTAIN CHANGES.  Since the date of the Base Balance Sheet,
except as set forth in SECTION 2.10 of the Disclosure Memorandum,  there has not
been:

                  (a) any change in the financial condition, properties, assets,
liabilities,  business  or  operations  of any  Dynatech  Entity  which,  either
individually  or in the  aggregate,  has had or  will  have a  Material  Adverse
Effect;

                  (b) 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 any Dynatech Entity other than in the ordinary course of
business;

                  (c) any damage, destruction or loss, whether or not covered by
insurance, with respect to any property or asset of any Dynatech Entity that has
had or will have a Material Adverse Effect;

                  (d)  any  material  obligation  or  liability  of  any  nature
incurred by any Dynatech  Entity,  whether  absolute,  contingent  or otherwise,
other than  obligations  and  liabilities  incurred  in the  ordinary  course of
business;


                                                        14

<PAGE>



                  (e) any  material  change in the  compensation  payable by any
Dynatech  Entity  to any of  its  officers,  employees,  agents  or  independent
contractors  other than normal  merit  increases  in  accordance  with its usual
practices;

     (f) any change in accounting  methods or practices,  credit  practices,  or
collection policies used by any Dynatech Entity;

                  (g) to the best of the Sellers' knowledge,  any statute, rule,
regulation, ordinance, order or government policy adopted, which is specifically
applicable  to firms in the line of  business in which the Seller is engaged due
to its conduct of the Business,  which may, in the Sellers' reasonable judgment,
have a Material Adverse Effect; or

                  (h)  any  strike,  labor  dispute  or  any  other  new  event,
development  or condition of any character  which could have a Material  Adverse
Effect.

         2.11 CONSENTS AND APPROVALS. Except as set forth in SECTION 2.11 of the
Disclosure  Memorandum,  the  execution  and delivery of this  Agreement by each
Seller do not, and the  performance  of the  transactions  contemplated  by this
Agreement by each Seller will not,  require any filing with or notification  to,
or any consent,  approval,  authorization  or permit from, any  governmental  or
regulatory  authority (a  "Governmental  Entity") or any other person except (a)
filings  under Section 7A of the Clayton Act (the  "Hart-Scott-Rodino  Act") and
under the merger control laws of the Federal Republic of Germany,  and (b) where
failure to obtain such consents,  approvals,  authorizations  or permits,  or to
make  such  filings  or  notifications  (i)  would  not  prevent  or  delay  the
consummation of the transactions  contemplated by this Agreement, and (ii) would
not have a Material Adverse Effect.

         2.12 INTELLECTUAL  PROPERTY.  SECTION 2.12 of the Disclosure Memorandum
sets  forth  a true  and  correct  list  of all  patents,  patent  applications,
trademarks,  trademark  registrations and applications and registered copyrights
owned by or licensed to each Dynatech  Entity,  and all  applications  therefor,
other than retail  software  which each  Dynatech  Entity  licenses  for its own
internal use  (collectively,  "Intellectual  Property").  Except as set forth in
SECTION 2.12 of the Disclosure  Memorandum,  each Dynatech  Entity owns or has a
valid  license  to use  all  proprietary  rights  used in the  operation  of the
Business as heretofore conducted,  including all of such Intellectual  Property.
Except as set forth in any license  identified in SECTION 2.12 of the Disclosure
Memorandum,  no Seller and no Dynatech Entity has granted to any other person or
entity  any  rights  to any of the  Intellectual  Property.  No  Seller  has any
knowledge  of any  infringement  by others of any of its  Intellectual  Property
rights. To the knowledge of the Sellers,  the present  business,  activities and
products of the Dynatech Entities does not infringe any Intellectual Property of
any other person or entity.  Since January 1 1993, (and, to the knowledge of the
Sellers,  since  January 1, 1991),  no Seller or Dynatech  GmbH has received any
complaint,  claim or notice in writing  alleging  any such  infringement,  which
complaint,  claim or notice has not been resolved to the mutual  satisfaction of
the parties  involved in a manner which  involves no future  obligations  of any
Dynatech Entity. No Seller or Dynatech GmbH has agreed, except either (i) in the
ordinary course of business in conjunction with

                                                        15

<PAGE>



product sales or (ii) as identified in any contract identified in SECTION 1.1(c)
of  the  Disclosure  Memorandum  or in  any  other  section  of  the  Disclosure
Memorandum,  to indemnify any person or entity for or against any  infringement,
misappropriation or other conflict with any Intellectual Property.

         2.13 LITIGATION.  Except as set forth in SECTION 2.13 of the Disclosure
Memorandum,  there  is no  litigation  or,  to the  knowledge  of  the  Sellers,
governmental or administrative  proceeding or investigation  pending against any
Seller,  or against  Dynatech sro or Dynatech  GmbH or, to the  knowledge of the
Sellers,  threatened  against any Seller,  or against  Dynatech  sro or Dynatech
GmbH,  which may have a Material Adverse Effect or which would prevent or hinder
the consummation of the transactions contemplated by this Agreement.

         2.14 INSURANCE. A summary of insurance coverage of each Dynatech Entity
or of Dynatech  for the benefit of any  Dynatech  Entity is contained in SECTION
2.14 of the  Disclosure  Memorandum.  All policies  providing  such coverage are
nontransferable  other than any such  policies  obtained by  Dynatech  sro or by
Dynatech GmbH. Neither Dynatech sro nor Dynatech GmbH is in default with respect
to any provisions of any policy of general liability,  fire, title or other form
of insurance  covering  the portion of the Business  conducted by such entity or
the Incorporated Assets.  Dynatech sro and Dynatech GmbH are each current in the
payment of all premiums due with respect to such  insurance.  To the best of the
Sellers'  knowledge,  no basis exists which would  jeopardize the coverage under
any such insurance.

         2.15     ENVIRONMENTAL MATTERS.

     (a) To the best  knowledge of the  Sellers,  except as set forth in SECTION
2.15 of the Disclosure Memorandum:

     (i) No  Dynatech  Entity  is or has  been  in  violation,  in any  material
respect,  of  any  federal,   foreign,   state,  municipal  or  provincial  law,
regulation, order, decree or rule relating to the prevention of pollution or the
protection of the environment ("Environmental Laws");

     (ii) the Leased  Real  Property  has never  been the  subject of a material
cleanup or remediation of environmental contamination;

     (iii) the Leased Real Property does not contain any Hazardous  Material (as
defined below) in amounts which would require  removal or remediation  under any
Environmental Law applicable to any such property;

     (iv) no Dynatech Entity has ever owned or operated a petroleum or Hazardous
Waste (as defined  below)  landfill or any  petroleum or other  Hazardous  Waste
treatment, storage or disposal facility subject to any permit requirements;


                                                        16

<PAGE>



     (v) there are no proceedings  under any Environmental Law applicable to any
of the Leased Real Property  pending or, to the best of the Sellers'  knowledge,
threatened  which could have a material  adverse effect on the present or future
use of the Leased Real Property for the purpose for which it is currently used;

     (vi) the  Leased  Real  Property  is not and has not  been on any  federal,
foreign  or state  "Superfund"  list and is not on the  Comprehensive  Response,
Compensation and Liability Information System list compiled by the United States
Environmental   Protection   Agency  or  on  any  analogous   state  or  foreign
environmental agency list;

     (vii) with regard to the Leased Real Property,  neither Dynatech nor any of
the Dynatech  Entities has received any notice from any  governmental  agency or
other party alleging any liability under any Environmental Law;

     (viii)  the  Leased  Real  Property  is not  subject  to a lien  under  any
Environmental Laws;

     (ix) none of the Leased Real Property contains any Hazardous Substances (as
defined below) which requires release  reporting or removal or remediation under
any Environmental Law.

         For purposes of this Agreement, "Hazardous Material" means any material
as so defined under the Federal Hazardous Materials Transportation Act, codified
within 49 U.S.C. Sections 5101-5127 and its implementing  regulations,  or under
any similar federal,  state,  provincial and county and foreign laws; "Hazardous
Waste" means any material as so defined under the Federal  Solid Waste  Disposal
Act as amended by the Resource Conservation and Recovery Act, as codified within
42 U.S.C.  Sections  6901-6992k and its implementing  regulations,  or under any
similar federal,  state,  provincial and county and foreign laws; and "Hazardous
Substances"  means  those  substances  listed  or  identified  pursuant  to  the
Comprehensive Environmental Response, Compensation and Liability Act of 1980, as
amended by the Superfund  Amendments and  Reauthorization Act of 1986 in Section
302.4  of the  National  Contingency  Plan  (Title  40 of the  Code  of  Federal
Regulations) as in effect as of the Closing Date, or under any similar  federal,
state, provincial and county and foreign laws.

         2.16     EMPLOYEE BENEFIT PLANS.

                  (a)  DISCLOSURE.  SECTION  2.16 of the  Disclosure  Memorandum
contains a true and  complete  list of all  pension,  benefit,  profit  sharing,
retirement, stock, deferred compensation, welfare, insurance, disability, salary
continuation  and  other  similar  plans,  programs  and  agreements,  currently
maintained by any of the Dynatech Entities for the benefit of its U.S. employees
(or by Dynatech or any of its affiliates  for the benefit of the U.S.  employees
of any of the  Dynatech  Entities),  including  such plans  which are  "employee
benefit  plans"  within the meaning of Section 3(3) of the  Employee  Retirement
Income Security Act of 1974, as amended (the "Employee Plans").

                                                        17

<PAGE>



                  (b) CLAIMS AND LITIGATION. Except as set forth in SECTION 2.16
of the  Disclosure  Memorandum,  there  are no  pending  claims,  suits or other
proceedings by present or former employees of any of the Dynatech  Entities,  or
of any plan  participants,  beneficiaries  or spouses of any of the above,  with
respect to or involving any Employee Plan, or any rights or benefits thereunder,
other than claims by  participants or  beneficiaries  of such Employee Plans for
ordinary and usual  benefits to which such  beneficiaries  of  participants  are
entitled under the terms of such Employee Plans.

         2.17  PERMITS.  SECTION  2.17 of the  Disclosure  Memorandum  lists all
permits, registrations, licenses, franchises, certifications and other approvals
required from federal,  foreign,  state,  or local  authorities in order for the
Dynatech  Entities to conduct the  Business,  the loss or absence of which could
have a Material Adverse Effect.

         2.18  CUSTOMERS AND  DISTRIBUTORS;  RELATIONSHIPS.  SECTION 2.18 of the
Disclosure  Memorandum  lists,  separately for each Dynatech  Entity,  any sales
representative,   distributor  or  direct  customer   (whether   pursuant  to  a
commission, royalty or other arrangement) who accounted for more than 10% of the
sales of such  Dynatech  Entity for the nine  months  ended  December  31,  1995
(collectively,  the "Customers and  Distributors").  To the best of the Sellers'
knowledge,  no  relationship  between  any  of the  Dynatech  Entities  and  any
Customer,  Distributor,  material  supplier or officer or key employee of any of
the Dynatech  Entities will be  terminated or adversely  affected as a result of
the  execution  of  this  Agreement  or the  consummation  of  the  transactions
contemplated hereby.

         2.19 TRANSACTIONS WITH AFFILIATES.  Except as set forth in SECTION 2.19
of the Disclosure  Memorandum,  no Dynatech Entity owns, and, to the best of the
Sellers'  knowledge,  none of the  Dynatech  Entities'  stockholders,  officers,
employees or directors  own directly or  indirectly  on an  individual  or joint
basis any  interest in (other than  passive  investments  of less than 5% of the
equity  ownership of a  publicly-traded  enterprise),  or serve as an officer or
director  or in another  similar  capacity  of, any  competitor  or  supplier of
Dynatech or of any Dynatech  Entity,  or, to the  knowledge of the Sellers,  any
organization  which has any material  contract or  arrangement  with Dynatech or
with any Dynatech Entity.  Except as set forth in SECTION 2.19 of the Disclosure
Memorandum,  no Dynatech  Entity is or, during the  nine-month  period ending on
December 31, 1995, has been a party to any material  sales or purchase  contract
or  transaction  with any  affiliate of Dynatech  other than any other  Dynatech
Entity.

         2.20 INVENTORIES.  All of each Dynatech Entities'  inventory items (net
of any reserve  therefor  identified on the Base Balance Sheet) are of a quality
and quantity  salable in the ordinary course of its business.  The values of the
inventories  stated in the Base  Balance  Sheet  reflect  the  normal  inventory
valuation  policies of each  Dynatech  Entity and were  determined in accordance
with Dynatech's accounting policy described in Section 2.7.


                                                        18

<PAGE>



         2.21 CONTRACTS.  Except for contracts,  commitments,  plans, agreements
and licenses  described in SECTION  1.1(c),  SECTION 1.2,  SECTION 1.3,  SECTION
2.11, SECTION 2.16,  Section 2.19 or SECTION 2.21 of the Disclosure  Memorandum,
no Dynatech Entity is a party to or subject to:

                  (a) any plan or  contract  providing  for  bonuses,  pensions,
options,  stock purchases,  deferred compensation,  retirement payments,  profit
sharing,  collective  bargaining or the like, or any contract or agreement  with
any labor union;

                  (b) any  employment  contract or contract for  services  which
requires  the payment of more than $75,000  annually or which is not  terminable
within 30 days by each  Dynatech  Entity  without  liability  for any penalty or
severance  payment (other than as required by statute or by commonly  recognized
employment practices that may require the giving of additional notice, severance
payments or both);

                  (c) except for purchase orders in the ordinary course for less
than $100,000 in the aggregate for any single vendor,  any contract or agreement
for the purchase of any commodity, material or equipment which is not terminable
without penalty or other obligation upon 90 days' notice;

     (d) any contract with any sales agent or  distributor  of products which is
not terminable without penalty or other obligation upon 90 days' notice;

     (e) any contract containing  covenants limiting the freedom of any Dynatech
Entity to compete in any line of business or with any person or entity;

     (f) any indenture,  mortgage,  promissory note, loan agreement, guaranty or
other agreement or commitment for the borrowing of money; or

     (g) any  contract or  agreement  with any  officer,  employee,  director or
stockholder  of any  Dynatech  Entity  or  with  any  persons  or  organizations
controlled by or affiliated with any of them.

         Each Dynatech  Entity is in  compliance  in all material  respects with
such  contracts,  plans or  agreements,  except for such defaults  thereunder as
would not have a Material Adverse Effect.

         2.22 COMPLIANCE WITH LAWS. Each Dynatech Entity is in compliance in all
material respects with all applicable  statutes,  ordinances,  orders, rules and
regulations  promulgated  by any  federal,  foreign,  state,  municipal or other
governmental  authority  which  apply to the  conduct  of its  business,  and no
Dynatech  Entity has received any notice of a violation or alleged  violation of
any such statute, ordinance, order, rule or regulation.

     2.23 EMPLOYEES;  LABOR MATTERS.  Each Dynatech Entity employs approximately
the number of employees set forth in SECTION 2.23 of the  Disclosure  Memorandum
next to its

                                                        19

<PAGE>



respective name and generally enjoys a good employer-employee  relationship.  No
Dynatech Entity is delinquent in payments to any of its employees for any wages,
salaries,  commissions,  bonuses or other direct  compensation  for any services
performed for it to the date hereof or amounts required to be reimbursed to such
employees. No Dynatech Entity is party to any collective bargaining agreement or
recognizes  (or  is  required  to  recognize)  any  trade  union.  There  is not
currently,  and within the last three years no Dynatech Entity has  experienced,
any strike, picketing, boycott, work stoppage or slow down or union organization
activity.  Except  as  may be  described  in  SECTION  2.23  of  the  Disclosure
Memorandum, no Dynatech Entity has received written notice within the last three
years (i) of any  allegation,  charge or  complaint  of unfair  labor  practice,
employment  discrimination  or other matter  relating to the employment of labor
pending  or  threatened  against  it,  or (ii) that it has not  complied  in all
material respects with all applicable laws relating to the employment of labor.

         2.24 BACKLOG.  The firm sales orders and  commitments  for the Dynatech
Entities'  products and services that make up the Dynatech  Entities' backlog as
of the date of the Base  Balance  Sheet  (which  in each  case  are  subject  to
cancellation  by the customer in the ordinary  course of business)  was not less
than  $5,378,000 at September 30, 1995. All such orders and  commitments and any
quotations for work which were outstanding at that time arose and were booked in
the ordinary course of the Dynatech  Entities'  business and contained terms and
conditions that were consistent with the past practice of the Dynatech  Entities
over the past year.

         2.25     PRODUCT QUALITY; WARRANTIES; RECALLS.

                  (a) PRODUCT QUALITY.  Since January 1, 1993, (i) there has not
existed  any  pattern  of return of  shipments  by  customers,  cancellation  of
purchase  orders,  rejection of products by customers or claims by customers for
allowances  that would  indicate a problem  with  respect to the  quality of any
products  sold by the  Business;  and (ii) no products sold by the Business have
been  authorized  to be  returned  or,  to the best  knowledge  of the  Sellers,
rejected  by the  purchasers  which  products  have not,  in either  case,  been
returned to and accepted by any Dynatech  Entity prior to the Closing except for
such returns and rejections of items occurring in the normal course of business.

                  (b) PRODUCT  WARRANTIES.  A statement of the current  standard
product  warranty  used for each of the products of the Business is set forth in
SECTION  2.25(b) of the  Disclosure  Memorandum.  Such Section of the Disclosure
Memorandum  also  lists and  accurately  summarizes  any and all  other  product
warranties  (other than express or implied product  warranties  required by law)
made by or on behalf of any  Dynatech  Entity in  connection  with the  Business
which  deviate in any  material  respect  from such  Dynatech  Entity's  current
standard  product  warranty and which  remain in effect on the date  hereof,  or
pursuant to which any of the Dynatech Entities has any remaining obligations.

     (c) RECALLS.  To the best  knowledge of the Sellers,  there is no basis for
the  recall,  withdrawal  or  suspension  of any  approval  by any  governmental
regulatory agency with

                                                        20

<PAGE>



respect to any product or service  sold or proposed to be sold by the  Business.
None of the  Business's  products  or  services  is the  subject  of any  recall
proceedings,  no such proceedings have been threatened, and (except as set forth
on SECTION  2.25(c) of the  Disclosure  Memorandum) no product or service of the
Business has been recalled since January 1, 1993.

         2.26     DISCLAIMER.  EXCEPT FOR THE REPRESENTATIONS AND WARRANTIES
OF THE SELLERS CONTAINED HEREIN, THE SELLERS DISCLAIM ALL
WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT
LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR USE OR PURPOSE.

     2.27  SUFFICIENT  FUNDS.  Dynatech and the Sellers have and will have funds
sufficient to perform and discharge the Excluded Liabilities.

         2.28 DEFINITION OF KNOWLEDGE.  In each case where a  representation  or
warranty by the Sellers  contained  in this  Agreement is qualified as being "to
the best of the Sellers'  knowledge" (or otherwise  similarly  qualified),  such
knowledge shall be deemed to consist of the actual  knowledge of Robert H. Hertz
and Samuel W.  Tishler,  and the actual  knowledge of the  principal  executive,
financial  and  operating  officers of each  Dynatech  Entity as  identified  in
SECTION 2.28 of the Disclosure  Memorandum  next to their  respective  names, in
each case after actually conducting a reasonable investigation.

 SECTION 3.  REPRESENTATIONS AND WARRANTIES OF THE BUYERS.

         The Buyers and  Buyers'  Parent  hereby  represent  and  warrant to the
Sellers, jointly and severally, that:

         3.1  ORGANIZATION.  Each Buyer and Buyers' Parent is a corporation duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  set  forth  next to its  name in  EXHIBIT  3.1  hereto  with  full
corporate  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 currently conducted.

         3.2  OWNERSHIP  OF THE  BUYERS.  Buyer's  Parent owns a majority of the
issued and  outstanding  capital stock of BioAnalysis.  BioAnalysis  directly or
indirectly  owns all of the issued and  outstanding  capital stock of each other
Buyer.

         3.3 AUTHORITY OF THE BUYERS AND BUYERS' PARENT.  Each Buyer and Buyers'
Parent has all necessary authority and power to enter into this Agreement and to
carry out the  transactions  contemplated  hereby.  The execution,  delivery and
performance  by  each  Buyer  and  Buyers'  Parent  of  this  Agreement  and the
consummation by each Buyer and Buyers' Parent of the  transactions  contemplated
hereby have been duly authorized by all necessary corporate action of each Buyer
and  Buyers'  Parent,  and no other  action on the part of each Buyer or Buyers'
Parent is required in connection therewith. This Agreement constitutes, and

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<PAGE>



the other  agreements  executed by each Buyer and Buyers'  Parent in  connection
herewith constitute, the valid and binding obligations of each Buyer and Buyers'
Parent,  enforceable  against each Buyer and Buyers'  Parent in accordance  with
their respective  terms.  The execution,  delivery and performance by each Buyer
and Buyers' Parent of this Agreement and the other  agreements  executed by each
Buyer and Buyers' Parent in connection  herewith do not, and the  performance by
each  Buyer and  Buyers'  Parent of the  transactions  contemplated  hereby  and
thereby, will not:

     (i)  violate  any  provision  of the Charter or By-laws of such Buyer or of
Buyers' Parent;

     (ii) violate any laws of the United States, or any country,  state or other
jurisdiction,  or any order, judgment or decree,  applicable to such Buyer or to
Buyers'  Parent or require such Buyer or Buyers'  Parent to obtain any approval,
consent  or  waiver  of,  or  make  any  filing  with,   any  person  or  entity
(governmental or otherwise) that has not been obtained or made; or

     (iii)  with or  without  notice  or  lapse  of time or  both,  result  in a
violation or any breach of or constitute a default under, or require the consent
or  approval  of any third party  under,  any  material  note,  bond,  mortgage,
indenture,  contract,  agreement,  lease,  license,  permit,  franchise or other
instrument or obligation to which such Buyer or Buyers' Parent is a party.

         3.4  CONSENTS  AND  APPROVALS.  The  execution  and  delivery  of  this
Agreement  by each  Buyer  does not,  and the  performance  of the  transactions
contemplated  by this Agreement by each Buyer will not,  require any filing with
or notification to, or any consent, approval,  authorization or permit from, any
Governmental   Entity  or  any  other  person   except  (a)  filings  under  the
Hart-Scott-Rodino  Act and under the merger control laws of the Federal Republic
of  Germany,  and  (b)  where  failure  to  obtain  such  consents,   approvals,
authorizations  or permits,  or to make such filings or notifications  would not
prevent  or delay the  consummation  of the  transactions  contemplated  by this
Agreement.

         3.5  LITIGATION.  There is no  litigation  or, to the  knowledge of the
Buyers,  governmental  or  administrative  proceeding or  investigation  pending
against any Buyer or against  Buyers'  Parent or, to the knowledge of the Buyers
or of Buyer' Parent,  threatened  against any Buyer or against  Buyers'  Parent,
which would prevent or hinder the consummation of the transactions  contemplated
by this Agreement.

         3.6 FINDER'S FEE.  Neither the Buyers nor Buyers'  Parent have 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.


                                                        22

<PAGE>



         3.7 NO KNOWLEDGE OF BREACH.  Neither the Buyers nor Buyers' Parent have
any  actual  knowledge  of a  breach  (or of any  fact  or  set of  facts  which
constitute  a breach) of any  representation  or warranty of the Sellers made in
this Agreement or in any Exhibit hereto.

     3.8 SUFFICIENT  FUNDS. The Buyers and the Buyers' Parent have and will have
funds  sufficient  to  satisfy  the sums  due at  Closing  as set  forth in this
Agreement and to perform and discharge the Liabilities.

SECTION 4.  CONDITIONS TO OBLIGATIONS

         4.1.  CONDITIONS TO OBLIGATIONS OF THE BUYERS.  The  obligations of the
Buyers to consummate  the  transactions  contemplated  hereby are subject to the
satisfaction,  on or before the Closing,  of the  following  conditions  (unless
waived in writing by BioAnalysis in the manner provided in Section 6.2 hereof):

                  (a)   REPRESENTATIONS,   WARRANTIES  AND  PERFORMANCE  OF  THE
SELLERS.  The representations and warranties set forth in Section 2 hereof shall
be accurate on and as of the date hereof,  and shall be accurate in all material
respects on and as of the  Closing  Date as though made on and as of the Closing
Date, and the Sellers shall have performed all obligations and complied with all
covenants  required to be  performed  or to be complied  with by them under this
Agreement prior to the Closing.

                  (b) NO  MATERIAL  ADVERSE  CHANGES.  There  shall have been no
material  adverse  change  in  the  financial  condition,   properties,  assets,
liabilities,  earnings, business, operations or prospects of any of the Dynatech
Entities since the date of this Agreement, whether or not in the ordinary course
of  business.  For  purposes of the  preceding  sentence,  materiality  shall be
determined with respect to the Dynatech Entities as a whole.

                  (c)  AUTHORIZATION.  All action  necessary  to  authorize  the
execution,  delivery and performance  hereof by the Sellers and the consummation
of the transactions  contemplated  hereby shall have been duly and validly taken
by the Sellers.  Dynatech  shall have furnished  BioAnalysis  with a copy of all
resolutions  adopted by its Board of Directors in connection  with such actions,
certified by the Clerk or an Assistant  Clerk of Dynatech,  together with copies
of such other  instruments  and documents as BioAnalysis  shall have  reasonably
requested.

                  (d) CONSENTS.  Any governmental  authority having jurisdiction
over any Seller or any Dynatech Entity or over any Buyer, to the extent that its
consent  or  approval  is  required  by  applicable  law or  regulation  for the
performance  of  this  Agreement  or  the   consummation  of  the   transactions
contemplated hereby shall have granted any necessary consent or approval.

     (e) PERMITS AND  APPROVALS.  Any and all  consents,  permits,  approvals or
other  actions  of  any  person,  jurisdiction  or  authority  required  in  the
reasonable  opinion of BioAnalysis for lawful  consummation of the  transactions
contemplated hereby shall have been

                                                        23

<PAGE>



obtained,  and shall be in full force and effect,  and no such consent,  permit,
approval or other  action shall  contain any  provision  that in the  reasonable
judgment of BioAnalysis is unduly burdensome.

     (f) GOOD STANDING CERTIFICATES. Each of Dynatech and Dynatech Laboratories,
Inc. shall have  delivered to BioAnalysis a corporate good standing  certificate
from its jurisdiction of incorporation.

                  (g) MATTERS RELATED TO INDEBTEDNESS OF DYNATECH GMBH. Dynatech
shall have delivered to BioAnalysis  evidence of the release of Dynatech GmbH of
from all indebtedness to Bank of Boston and/or any other person or entity.

                  (h) OFFICER'S  CERTIFICATE.  Dynatech  shall have delivered to
BioAnalysis a certificate executed by an officer of Dynatech,  dated the Closing
Date,  certifying to the  fulfillment  of the  conditions  specified in Sections
4.1(a) and 4.1(b).

                  (i)  DOCUMENTS  SATISFACTORY.  The form and  substance  of all
legal matters  contemplated herein and of all papers used or delivered hereunder
shall be  reasonably  acceptable  to  BioAnalysis,  and  BioAnalysis  shall have
received all documents that it may have reasonably  requested in connection with
the  transactions   contemplated   hereby,  in  form  and  substance  reasonably
satisfactory to it.

         4.2.  CONDITIONS TO OBLIGATIONS OF THE SELLERS.  The obligations of the
Sellers to consummate the  transactions  contemplated  hereby are subject to the
satisfaction,  on or before the Closing,  of the  following  conditions  (unless
waived by Dynatech in writing in the manner provided in Section 6.2 hereof):

                  (a) REPRESENTATIONS, WARRANTIES AND PERFORMANCE OF THE BUYERS.
The  representations  and  warranties  set forth in  Section  3 hereof  shall be
accurate on and as of the date  hereof,  and shall be  accurate in all  material
respects on and as of the  Closing  Date as though made on and as of the Closing
Date, and the Buyers shall have performed all  obligations and complied with all
covenants  required to be  performed  or to be complied  with by them under this
Agreement prior to the Closing.

                  (b)  AUTHORIZATION.  All action  necessary  to  authorize  the
execution, delivery and performance hereof by the Buyers and the consummation of
the transactions  contemplated  hereby shall have been duly and validly taken by
the  Buyers.  BioAnalysis  shall  have  furnished  Dynatech  with a copy  of all
resolutions  adopted by its Board of Directors in connection  with such actions,
certified by the Secretary or an Assistant  Secretary of  BioAnalysis,  together
with copies of such other  instruments  and  documents  as  Dynatech  shall have
reasonably requested.

     (c) CONSENTS.  Any  governmental  authority  having  jurisdiction  over any
Seller or any Dynatech  Entity or over any Buyer, to the extent that its consent
or approval is required by applicable law or regulation  for the  performance of
this Agreement or the

                                                        24

<PAGE>



consummation  of the  transactions  contemplated  hereby  shall have granted any
necessary consent or approval.

                  (d)  PERMITS AND  APPROVALS.  Any and all  consents,  permits,
approvals or other actions of any person,  jurisdiction or authority required in
the reasonable  opinion of Dynatech for lawful  consummation of the transactions
contemplated hereby shall have been obtained.

     (e)  GOOD  STANDING  CERTIFICATES.   Each  of  BioAnalysis,  DLW  Inc.  and
BioAnalysis  International  Sales  Inc.  shall  have  delivered  to  Dynatech  a
corporate good standing certificate from its jurisdiction of incorporation.

                  (f) OFFICER'S CERTIFICATE. BioAnalysis shall have delivered to
Dynatech a certificate executed by an officer of BioAnalysis,  dated the Closing
Date,  certifying  to the  fulfillment  of the  conditions  specified in Section
4.2(a).

                  (g)  DOCUMENTS  SATISFACTORY.  The form and  substance  of all
legal matters  contemplated herein and of all papers used or delivered hereunder
shall be reasonably acceptable to Dynatech, and Dynatech shall have received all
documents  that  it  may  have  reasonably  requested  in  connection  with  the
transactions  contemplated hereby, in form and substance reasonably satisfactory
to it.

SECTION 5.  CERTAIN COVENANTS.

         5.1      PROPRIETARY INFORMATION; CONFIDENTIALITY.

                  (a) At  all  times  subsequent  to the  Closing,  each  of the
Sellers and each of their  affiliates shall hold in confidence all knowledge and
information  of a secret or  confidential  nature with  respect to the  Business
("Proprietary Business Information") and shall not disclose, publish or make use
of the same without the consent of the Buyers.

                  (b) At all times subsequent to the Closing,  the Sellers,  the
Buyers and their  respective  affiliates  shall hold in confidence all knowledge
and information of a secret or confidential nature supplied to them by the other
parties  hereto  for  their  respective  evaluations  of  this  Agreement  (such
information,  excluding the  Proprietary  Business  Information,  which shall be
governed by Section 5.1(a) the "Evaluation Information").

                  (c) The  obligations  of the  parties  under this  Section 5.1
shall  not  apply  to  any  Proprietary   Business   Information  or  Evaluation
Information which:

     (i)  shall  have  become  public  knowledge  other  than by  breach of this
Agreement by the disclosing party;


                                                        25

<PAGE>



     (ii) is required to be disclosed by legal process or by any applicable law,
rule or regulation of any governmental or regulatory body or stock exchange;

     (iii) becomes  available to the  disclosing  party from a source other than
another party to this Agreement or the  representatives  or agents of such other
party;

     (iv) was known by the  disclosing  party prior to its receipt  from another
party to this Agreement or from the representatives or agents of such party;

     (v) has been or is subsequently  developed  independently by the disclosing
party; or

     (vi) is disclosed more than three years after the date of this Agreement.

                  (d) If (i) the  employment  of an  officer,  director or other
employee of the Sellers or the Buyers,  or of their  respective  affiliates,  to
whom  Proprietary  Business  Information  or  Evaluation  Information  has  been
disclosed is terminated and (ii) such  individual is subject to an obligation to
maintain such knowledge or information in confidence after such termination, the
Buyers or the  Sellers  (as the case may be) shall,  upon  request by the other,
take all reasonable  steps at their own expense to enforce such  confidentiality
obligation in the event of an actual or  threatened  breach  thereof.  Any legal
counsel  retained  by any of the  Sellers  or the Buyers (as the case may be) in
connection with any such enforcement or attempted  enforcement shall be selected
by such party but shall be subject to the  approval  of the other  party,  which
approval shall not be unreasonably withheld.

                  (e) The  parties  hereto  agree that the remedy at law for any
breach of this Section 5.1 would be inadequate and that the other parties hereto
shall be entitled to injunctive  relief in addition to any other remedy they may
have upon breach of any provision of this Section 5.1.

         5.2 NO  SOLICITATION  OR HIRING OF  FORMER  EMPLOYEES.  For a period of
three years after the Closing Date, no Seller nor any affiliate  thereof  shall,
without the prior written  consent of  BioAnalysis,  (a) solicit any Transferred
Employee (as defined in Section 7.1) to terminate his employment with the Buyers
or to become an  employee  of such  Seller  or  affiliate,  or (b) hire any such
Transferred Employee except employees involuntarily terminated by the Buyers.

         5.3      NONCOMPETITION AGREEMENT.

                  (a) UNDERTAKING. For a period of three years after the Closing
Date,  no  Seller  nor  any  affiliate  thereof  shall  directly  or  indirectly
manufacture,  market or sell, anywhere in the world, any product manufactured or
marketed by any Dynatech Entity (except

                                                        26

<PAGE>



with respect to Dynatech  Corporation  Limited,  as to which such covenant shall
relate only to products  manufactured  or marketed by the UK Business) as of the
Closing Date.

                  (b) INTERPRETATION AND REMEDIES. The parties hereto agree that
the duration,  geographic  scope and ambit of the  noncompetition  provision set
forth in this  Section  5.3 are  reasonable.  In the  event  that  any  court of
competent  jurisdiction  determines that the duration, the geographic scope, the
ambit, or any of the foregoing,  are  unreasonable and that such provision is to
that extent  unenforceable,  the parties  hereto agree that the provision  shall
remain in full force and effect for the greatest  time  period,  in the greatest
area and to the  greatest  extent  that would not render it  unenforceable.  The
parties intend that this noncompetition provision shall be deemed to be a series
of separate covenants,  one for each and every county of each and every state of
the United States of America and each and every  political  subdivision  of each
and every country  outside the United States of America where this  provision is
intended to be  effective.  The  Sellers  agree that  damages are an  inadequate
remedy for any breach of this  provision and that the Buyers  shall,  whether or
not they are  pursuing any  potential  remedies at law, be entitled to equitable
relief in the form of  preliminary  and  permanent  injunctions  without bond or
other  security  upon any  actual or  threatened  breach of this  noncompetition
provision.

         5.4  PROVISION  OF  FINANCIAL  INFORMATION.  Within  60 days  after the
Closing,  the Buyers shall provide the Sellers with such  financial  information
with  respect  to the  Business  for the  period  from  April 1,  1995 up to and
including the Closing identified on EXHIBIT 5.4 for the purpose of allowing each
Seller to prepare financial reporting  information required by federal and state
securities and tax laws.

         5.5      PRODUCT WARRANTY MATTERS.

                  (a) After the Closing Date, the Buyers shall provide  warranty
service with respect to all warranties on products sold or services delivered by
the Sellers  prior to the Closing Date (the  "Pre-Closing  Warranties").  In the
event  that the  Buyers'  direct  costs of labor,  materials  and  out-of-pocket
expenses (without any overhead allocation except overhead allocation to the cost
of products and materials  consistent  with the Sellers'  practices prior to the
Closing  Date)  with  respect to the  Buyers'  satisfaction  of the  Pre-Closing
Warranties  ("Warranty  Expenses")  shall exceed  $125,000 in the aggregate (the
"First  Warranty  Threshold"),  the Buyers shall provide notice to Dynatech that
the Buyers' Warranty Expenses have exceeded the First Warranty Threshold and the
Sellers shall, within 30 days after receipt of such notice, reimburse the Buyers
for 25% of such costs in excess of the First Warranty  Threshold (up to $150,000
of Warranty Expenses (the "Second Warranty  Threshold")).  In the event that the
amount of Warranty  Expenses exceeds the Second Warranty  Threshold,  the Buyers
shall  provide  notice to  Dynatech  that the  Buyers'  Warranty  Expenses  have
exceeded the Second  Warranty  Threshold and the Sellers  shall,  within 30 days
after  receipt  of such  notice,  reimburse  the Buyers for 75% of such costs in
excess of the Second  Warranty  Threshold  (up to $175,000 of Warranty  Expenses
(the "Third Warranty  Threshold")).  If the amount of Warranty  Expenses exceeds
the Third Warranty Threshold, the Buyers shall

                                                        27

<PAGE>



provide notice to Dynatech that the Buyers' Warranty  Expenses have exceeded the
Third Warranty Threshold and the Sellers shall,  within 30 days after receipt of
such notice,  reimburse the Buyers for 100% of such costs in excess of the Third
Warranty Threshold.

                  (b) Notwithstanding the foregoing, it is understood and agreed
that the  Sellers  shall not be liable for  expenses  of the Buyers  incurred in
connection  with the Buyers'  satisfaction  of the  Pre-Closing  Warranties in a
manner  which is not  materially  consistent  with the  manner  employed  by the
Sellers prior to the Closing Date with respect to such  Pre-Closing  Warranties,
nor shall any such expenses be included for purposes of determining  whether any
of the First  Warranty  Threshold,  the Second  Warranty  Threshold or the Third
Warranty Threshold has been exceeded.

                  (c) Within 30 days after the end of each calendar quarter, the
Buyers shall provide Dynatech with reasonably detailed, written information with
respect  to  warranty  work  performed  by the  Sellers in  satisfaction  of the
Pre-Closing  Warranties,  including,  but not  limited  to, (i) the names of the
customers  for whom such work was  performed,  (ii) the  product or  products on
which such work was  performed,  (iii) a list of the employees who performed any
such work and the cost for such employees associated with such work, (iv) a list
of the  materials  required to complete such work and the Sellers' cost for such
materials  (exclusive of any overhead costs,  except as provided above), (v) the
aggregate  cost of all such work  performed by the Sellers to date and (vi) such
other information as Dynatech may reasonably request.

         5.6      TRANSITIONAL USE OF DYNATECH NAMES.

                  (a)  Effective  as of  the  Closing  Date,  Dynatech  and  the
Dynatech Entities hereby grant to the Buyers the fully paid right and license to
continue to (i) conduct business and hold themselves out to the public under the
names "Dynatech Laboratories,"  "Laboratoires Dynatech" and/or "Dynatech Medical
Products"  (the "Marks") and (ii) use the Marks as brand names and service marks
for products sold and services provided by the Business on a transitional  basis
during the period  beginning on the Closing Date and ending on the date which is
180 days after the Closing  Date (the  "License  Period"),  as and to the extent
provided herein,  solely to permit the Buyers to establish different trading and
brand  name(s)  under  which to  conduct  the  Business  and to market  and sell
products  and  services  sold and  provided by the  Dynatech  Entities as of the
Closing Date.  The  foregoing  right and license shall be personal to the Buyers
and the Buyers shall not have any right to transfer,  directly or indirectly, by
sublicense,  assignment or otherwise,  any of the rights conferred hereby to any
other person or entity;  provided,  however,  that the Buyers may transfer  such
right and license to one or more entities  controlled by, which control or which
are under  common  control  with the Buyers in the event that any such entity or
entities succeeds to all or any substantial portion of the Business.

     (b) The  Buyers  may use the Marks  only in the  combinations  of words set
forth herein and the Buyers are not granted any right or license, and the Buyers
shall never

                                                        28

<PAGE>



use, the name or mark "Dynatech"  alone or without the other words  constituting
any of the Marks.  The Buyers  shall not join any name or names,  mark or marks,
design  or  designs  with any of the  Marks  so as to form a new or  confusingly
similar trademark;  provided,  however, that the Buyers may indicate their legal
corporate names and their affiliations with BioAnalysis,  the Buyers' Parent and
Thermo Electron Corporation in letterhead,  promotional  materials,  check stock
and other  written  materials  containing  the  Marks.  No  license  is  granted
hereunder for the use of any other  trademark,  service mark or trade name owned
by Dynatech or any of the Dynatech Entities.

                  (c) The Buyers may use the Marks solely in connection with the
marketing and sale of products  marketed and sold, and services  provided by the
Dynatech  Entities as of the Closing as part of the  Business.  The Buyers shall
not, during the License Period,  manufacture,  market or sell any other products
or services  employing the Marks.  During the License  Period,  the Buyers shall
adhere  to at least  the  same  quality  standards  adhered  to by the  Dynatech
Entities  prior to the Closing,  and shall not  distribute any product under the
Marks if Dynatech  reasonably  determines  that such  product does not meet such
quality  standards.  The Buyers shall ensure that the method and manner of using
and  displaying  the Marks  during the  License  Period  shall be  substantially
similar  to the method and manner  used by the  Dynatech  Entities  prior to the
Closing.  The Buyers may continue to use existing  supplies of  promotional  and
sales materials bearing the Marks (and to the extent displayed thereon, the name
and mark  "Dynatech  Corporation")  during  the  License  Period,  but shall use
reasonable  efforts to ensure that customers are aware that the Buyers and their
products  are no  longer  affiliated  with or  owned by  Dynatech  or any of its
affiliates.  The Buyers shall ensure that any new brand names adopted  during or
subsequent  to the  termination  of the  License  Period  are not  similar to or
reasonably  capable of confusion with the name and mark  "Dynatech."  The Buyers
shall provide  reasonable  prior written notice to Dynatech of any such proposed
brand names and shall permit Dynatech a reasonable  opportunity to object to any
such names or marks if Dynatech  reasonably  believes  that any of such names or
marks is reasonably likely to cause confusion in the marketplace.

                  (d) The Buyers  acknowledge  that the Marks and all rights and
goodwill  pertaining  thereto  belong  exclusively  Dynatech  and  the  Dynatech
Entities. To the extent any right in and to any of the Marks is deemed to accrue
to the Buyers, the Buyers hereby assign any and all such rights, at such time as
they may be deemed to accrue,  including the related  goodwill,  to Dynatech and
the  Dynatech  Entities.  The Buyers  shall  never  challenge  the  validity  of
Dynatech's and the Dynatech Entities'  ownership of the Marks or any application
for  registration  thereof,  or any trademark  registration  thereof,  and never
contest the fact that the Buyers'  rights under this  Agreement are solely those
of a  licensee,  and  terminate  at the end of the  License  Period  or upon the
earlier termination of the license granted hereby. The Buyers shall at any time,
whether  during or after the License  Period,  execute any documents  reasonably
requested by Dynatech or the  Dynatech  Entities to confirm  Dynatech's  and the
Dynatech  Entities'  ownership rights in the Marks. All such rights in the Marks
other than those  specifically  granted  herein are reserved by Dynatech and the
Dynatech Entities for their

                                                        29

<PAGE>



own use and benefit. The Buyers agree not to register or attempt to register any
of the Marks in its or their own names or any other name, anywhere.

                  (e) Each of  Dynatech  GmbH and  Dynatech  sro shall  take all
actions necessary to change its respective  corporate name to eliminate the name
and mark "Dynatech" therefrom prior to the termination of the License Period.

                  (f) For a period of six months  following the  termination  of
the License Period,  Buyers shall have the further right and license to indicate
in their own  promotional  materials  that the  products  and  services  offered
thereby are formerly  those offered by the Dynatech  Entities,  solely by use of
the words,  to the right of or beneath any reference to Buyers' own legal names,
trade names,  trademarks or service  marks,  "formerly  Dynatech  Laboratories,"
"formerly  Laboratoires  Dynatech" and/or "formerly  Dynatech Medical Products."
Any such  references  shall  employ a type size no larger than the type in which
the Buyers' legal names,  trade names,  trademarks or service marks appear,  and
shall not employ any distinctive  type font or trademark that is associated with
the Dynatech  Entities or that is  reasonably  likely to cause  confusion in the
marketplace.

         5.7 SUBLEASES;  ASSIGNMENTS.  As soon as practicable after the Closing,
Dynatech shall cause the respective Dynatech Entities (a) to execute and deliver
sublease  agreements  with  respect to the space  occupied by the such  Dynatech
Entities in Guernsey,  UK, and Saint Quentin en Yvelines,  France and (b) to use
commercially  reasonable  efforts to procure  assignments or novations of leases
under which they occupy real  property in favor of the relevant  Buyer,  each on
terms reasonably acceptable to such Buyer.

         5.8      CERTAIN BONUSES PAYABLE BY DYNATECH.

                  (a) Within 30 days after the Closing Date, Dynatech shall pay,
or shall cause to be paid,  all bonuses which may be, or become,  payable to any
Transferred  Employee as a result of such Transferred  Employee's  employment by
any of the Dynatech  Entities,  irrespective  of whether the  calculation of any
such bonus is based on (i) the performance of the Transferred Employee or of the
Dynatech Entity  employing such  Transferred  Employee or of Dynatech,  (ii) the
Purchase  Price  (as paid at the  Closing  or as  adjusted)  or (iii)  any other
criteria.

                  (b) Buyers' sole remedy for the failure by Dynatech to pay the
bonuses  as  provided  in the  preceding  paragraph  is that the  45-day  period
provided by Section 1.4(d) hereof during which  BioAnalysis  may notify Dynatech
of any  disagreement  with  respect to any amount set forth in the  Closing  Net
Asset Statement shall be extended by one day for each day (in excess of 30 days)
that all such bonuses remain unpaid in full.

                  (c) BioAnalysis  hereby  covenants that it shall not establish
any  bonus  plan,  contract  or  arrangement  with  or for  the  benefit  of any
Transferred Employee pursuant to which any compensation which may become payable
to such Transferred Employee will be

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dependent  directly  on any amount or amounts set forth in the Closing Net Asset
Statement.  Dynatech  acknowledges  and agrees,  however,  that  BioAnalysis may
establish bonus plans and arrangements that may link compensation of one or more
of the Transferred  Employees to the performance of the Business over time, that
such  performance  may be  measured  commencing  as of the  Closing,  and  that,
accordingly, such compensation may be linked indirectly to the Closing Net Asset
Statement.

SECTION 6.  MODIFICATION, WAIVER AND TERMINATION

     6.1.  MODIFICATIONS  AND  AMENDMENTS.  The parties may  mutually  amend any
provision of this  Agreement at any time prior to the Closing Date. No amendment
of any  provision of this  Agreement  shall be valid unless the same shall be in
writing and signed by all of the parties.

     6.2.  WAIVERS.  The parties  hereto may,  by a written  signed  instrument,
extend  the time for or  waive  the  performance  of any of the  obligations  of
another  party  hereto or waive  compliance  by such other party with any of the
covenants or conditions contained herein.

         6.3. TERMINATION.  At any time prior to the Closing, this Agreement may
be  terminated  (a) by  mutual  consent  of  BioAnalysis  and  Dynatech;  (b) by
BioAnalysis if (i) there has been a material breach by Dynatech or by any Seller
of a covenant,  representation  or warranty  contained in this  Agreement;  (ii)
BioAnalysis  has notified  Dynatech in writing of the  existence of such breach;
and (iii) the party in breach has failed to cure such breach within a reasonable
period of time after  receiving  such  notice;  (c) by Dynatech if (i) there has
been a material  breach by any Buyer of a covenant,  representation  or warranty
contained in this Agreement;  (ii) Dynatech has notified  BioAnalysis in writing
of the  existence  of such  breach;  and (iii) the party in breach has failed to
cure such breach within a reasonable period of time after receiving such notice;
(d) by  BioAnalysis  or by Dynatech if (i) there shall be an order of a court in
effect  preventing  consummation  of  the  transactions   contemplated  by  this
Agreement  or (ii)  there  shall be any  action  taken,  or any  statute,  rule,
regulation or order enacted,  promulgated,  issued or deemed  applicable to this
Agreement,  by a  governmental  authority that would make  consummation  of such
transactions  illegal;  or (e) by BioAnalysis or by Dynatech if the Closing does
not occur by March 1,  1996.  Any such  termination  shall be  binding  upon the
respective affiliates of Dynatech and of BioAnalysis.

         6.4.  EFFECT OF  TERMINATION.  If this Agreement shall be terminated as
provided in Section 6.3, this Agreement shall  forthwith  become void (except as
otherwise provided in Section 10.2); provided, however, that the foregoing shall
not relieve any party from liability for damages  actually  incurred as a result
of any breach of this Agreement.



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<PAGE>



SECTION 7.  EMPLOYEES.

         7.1 OFFERS OF  EMPLOYMENT OF  EMPLOYEES;  BENEFITS.  At or prior to the
Closing, the Buyers shall offer employment as of Closing Date (or in the case of
the Hong Kong Employees (as defined in Section 7.6), in accordance  with Section
7.6) to all  employees of the Dynatech  Entities (but in respect of employees of
Dynatech  Corporation  Limited,  only such  employees  who are engaged in the UK
Business)  who are  employed on the Closing Date and (except as required by law)
who are not then absent due to serious injury, long-term sickness or disability,
layoff or leave of absence,  such employees  being listed on Exhibit 7.1 hereto.
Exhibit 7.1 shall also set forth each such  employee's  salary  level,  years of
uninterrupted  employment  and years of service for benefit plan  purposes.  The
Buyers shall offer  employment to each such employee at the same or greater cash
compensation as that provided by the applicable Dynatech Entity to such employee
immediately prior to the Closing Date. Except as set forth in Section 7.4 below,
effective  as of the Closing  Date,  the Buyers  shall cause each  employee  who
accepts  such  offer  of   employment  or  whose   employment   is   transferred
automatically to the Buyers by operation of law (the "Transferred Employees") to
be provided  with  benefit  programs at a level and on a basis  consistent  with
similarly  situated  employees of the Buyers or, to the extent  required by law,
with benefit  programs  comparable to those provided by the applicable  Dynatech
Entity  immediately  prior to the Closing Date. For purposes of all such benefit
programs, the Buyers shall, to the extent applicable, recognize each Transferred
Employee's  years of service and level of seniority  with Dynatech or any of its
subsidiaries. If the employment of any Transferred Employee who is a resident of
the United States of America is  terminated  by any Buyer during the  nine-month
period after the Closing,  other than  terminations as a result of the voluntary
resignation of any such  Transferred  Employee or a termination  for cause which
relieves  the Buyers and the Sellers and their  respective  affiliates  from any
obligation to provide salary continuation  benefits, the Buyers shall provide to
such terminated  Transferred Employee salary continuation benefits for a minimum
of (i) two weeks  plus an  additional  week for each full year of  uninterrupted
employment  by the  Buyers  or  the  Sellers  beyond  the  first  year  if  such
Transferred Employee is not, at the Closing Date or upon termination, a salaried
employee  or (ii)  four  weeks  plus an  additional  week for each  full year of
uninterrupted  employment by the Buyers or the Sellers  beyond the first year if
such  Transferred  Employee  is,  at the  Closing  Date or upon  termination,  a
salaried  employee.  Subject to the preceding  sentence,  the Buyers may, to the
extent  permitted by law, treat the Transferred  Employees as at-will  employees
and may modify the terms of such Transferred  Employees'  employment in its sole
discretion.

         7.2  RESPONSIBILITY  FOR  OBLIGATIONS  TO  NON-TRANSFERRED   EMPLOYEES;
CONSTRUCTIVE  TERMINATION.  The Sellers shall be  responsible  for, and hold the
Buyers harmless against, any severance payments or other obligations  (including
without  limitation  any  liability for wrongful  discharge)  that may be due by
reason of termination of employment of any employees of any Dynatech  Entity who
are not Transferred Employees whether or not such termination occurred before or
after the Closing Date.  Without  limiting the generality of the foregoing,  the
Sellers shall be  responsible  for, and hold the Buyers  harmless  against,  any
liabilities,  obligations  and expenses that may be due in  connection  with the
employment (or

                                                        32

<PAGE>



termination  thereof)  of any  employees  of any  Dynatech  Entity  who  are not
Transferred  Employees but with respect to whom any  liability  transfers to any
Buyer by virtue of the UK Transfer of  Undertakings  (Protection  of Employment)
Regulations 1981 (the "Transfer Regulations") or by virtue of any similar law or
regulation in any other country in connection  with this  Agreement.  The Buyers
shall be responsible for, and hold the Sellers harmless against, any payments or
other liabilities,  obligations or expenses arising from or in any way connected
with the employment or the  termination of employment of any of the  Transferred
Employees at any time after the Closing or by reason of  constructive  dismissal
of any of the Transferred  Employees outside of the United States resulting from
differences  between any of the terms and  conditions of employment  (including,
without  limitation,  differences  in  pension  benefits  and  death in  service
benefits) after the Closing and those in effect prior to the Closing.

         7.3 NO THIRD PARTY RIGHTS.  Except as set forth in Section 7.1, nothing
contained  in this  Agreement  shall,  under any  circumstances  whatsoever,  be
construed as,  expressly or impliedly,  constituting  or creating any employment
contract,  offer of  employment,  promise of continuing  employment,  promise of
employee  benefits,  or other  obligation of any other kind of or by the Buyers,
to, or in favor of, any employees or consultants of any Dynatech Entity, and the
Buyers expressly  disclaim any and all liability to any such third party arising
out of this Agreement.

         7.4      CERTAIN TRANSITIONAL BENEFIT MATTERS.

                  (a) ACCRUED VACATION.  Promptly after the Closing, the Sellers
shall pay each employee of each Seller whose  employment by such Seller is being
terminated in connection with the  transactions  contemplated by this Agreement,
irrespective of whether such employees are Transferred  Employees,  the value of
all  unused  vacation  time  accrued by such  employee  in  accordance  with the
policies of such Dynatech  Entities and in accordance  with  applicable law, and
the Buyers shall have no liability therefor.  Transferred  Employees shall begin
to accrue  additional  vacation  time after the Closing in  accordance  with the
Buyers' policies.

                  (b) THRIFT PLANS.  Effective as of the Closing Date,  Dynatech
Laboratories, Inc. shall cause each of its Transferred Employees to have a fully
nonforfeitable  right to such Transferred  Employee's  account balance under the
Dynatech  Corporation  Profit-Sharing  and 401(k)  Savings  Plan (the  "Seller's
Thrift  Plan").  The Buyers shall take all action  necessary and  appropriate to
extend coverage,  effective as of the first day of the third month following the
month in which  the  Closing  occurs,  under  the  Thermo  Electron  Corporation
MoneyMatch  Plus  401(k) Plan (the  "Buyers'  Thrift  Plan") to the  Transferred
Employees who have met the eligibility  requirements of the Seller's Thrift Plan
or of the Buyers' Thrift Plan as of such date. All  Transferred  Employees shall
be credited under the Buyers' Thrift Plan, for eligibility and vesting purposes,
with the service  credited  under the terms of the  Seller's  Thrift  Plan.  The
Sellers shall provide the Buyers with all such  information  as is necessary for
the Buyers to carry out their  obligations  under the  foregoing  sentence.  The
Sellers  shall cause to be made any matching or regular  contributions  that are
required under the Seller's Thrift Plan

                                                        33

<PAGE>



for  any  period  prior  to the  Closing  Date  and  the  Buyers  shall  have no
responsibility  therefor.  Each such Transferred  Employee shall be permitted to
make a lump sum  withdrawal  of his or her account  balance  under the  Seller's
Thrift Plan. The Buyers shall cause the Buyers' Thrift Plan to accept any direct
cash  rollovers  with respect to such  Transferred  Employees  from the Seller's
Thrift  Plan to the  Buyers'  Thrift  Plan.  As soon as  practicable  after  the
Closing, the account balances of Transferred Employees under the Seller's Thrift
Plan shall be  transferred  from the Seller's  Thrift Plan to the Buyers' Thrift
Plan or, to the extent  permitted  under Code Sections  401(k) and 411(d)(6) and
regulations  thereunder,  shall  be made  available  for  distribution  from the
Seller's Thrift Plan to Transferred  Employees at their election,  provided that
Transferred Employees with outstanding loans under the Seller's Thrift Plan must
make such election, at their discretion,  by February 15, 1996. All transfers of
account  balances from the Seller's Thrift Plan to the Buyers' Thrift Plan shall
be made in cashand  promissory  notes  representing  loans  made to  Transferred
Employees.

     (c) U.S. MEDICAL AND DENTAL  BENEFITS.  Dynatech  Laboratories,  Inc. shall
make such arrangements as may be necessary for its Transferred Employees who are
residents  of the  United  States of America  to remain as  participants  in its
medical and dental plans for a period extending up to the last day of the second
month following the month in which the Closing occurs. The Buyers shall bear the
cost of such  coverage  for such  Transferred  Employees  during  such period as
follows:

     (i) The Buyers shall pay the  out-of-pocket  cost of actual claims for such
Transferred Employees (and their covered dependents) incurred and paid after the
Closing Date under  Dynatech  Laboratories,  Inc.'s group medical  benefits plan
and/or  group  dental  plan  plus an  administrative  fee  equal to 6% of actual
claims; and

     (ii) The  Buyers  shall  pay the  premium  cost for  participation  of such
Transferred  Employees (and their covered  dependents)  in a health  maintenance
organization.

                  (d) LIFE INSURANCE  BENEFITS.  Life insurance coverage for any
Transferred  Employee who is absent from work on the Closing Date due to serious
injury,  long-term  sickness or disability shall not become effective until such
Transferred Employee's return to active employment.

         7.5  EFFECT  OF  TRANSFER  REGULATIONS.  The  Buyers  and  the  Sellers
acknowledge that the Transfer  Regulations apply to the sale and purchase of the
UK Business under this Agreement and anticipate that the contracts of employment
of the employees of the UK Business listed on Exhibit 7.1 will have effect after
the Closing as if originally made with a Buyer.

         7.6      HONG KONG EMPLOYEES.

     (a)  On the  Closing  Date,  the  Buyers  shall  procure  that  BioAnalysis
International Sales Inc. shall offer to all employees of Dynatech Hong Kong Ltd.
who are

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<PAGE>



employed  on the  Closing  Date (the "Hong  Kong  Employees")  by a letter  from
BioAnalysis  International  Sales Inc. in terms agreed to by the Sellers,  which
offers employment with BioAnalysis International Sales Inc. with effect from the
termination of the notice  referred to in Section 7.6(b) below, on terms no less
favorable  to the Hong  Kong  Employees  than  those  enjoyed  by the Hong  Kong
Employees with Dynatech Hong Kong Ltd. on the Closing Date.

                  (b) On the  Closing  Date,  the  Sellers  shall  procure  that
Dynatech  Hong Kong Ltd.  shall  serve  notice  on the Hong  Kong  Employees  to
terminate in accordance  with the terms of the applicable  employment  contracts
their employment with Dynatech Hong Kong Ltd.

                  (c) During the period from the Closing  Date until the date on
which the full notice period referred to in Section 7.6(b) expires in respect of
the Hong Kong  Employees,  the Sellers will procure that Dynatech Hong Kong Ltd.
shall make  available to the Buyers the  services of the Hong Kong  Employees in
order to carry on the  Business.  In  consideration  thereof,  the Buyers  shall
reimburse  (and  indemnify  Dynatech  Hong Kong  against) the cost of all wages,
pension  contributions,  holiday  pay,  employer's  liability  and  third  party
insurance premiums and against all claims and demands and liabilities (including
all  employer's  liability for personal  injury or otherwise) in respect of such
Hong Kong Employees  accruing during such period (provided,  however,  that this
sentence  shall not relieve  Dynatech  Hong Kong Ltd. of its  obligations  under
Section 7.2 with respect to employees other than Transferred Employees).

                  (d) Unless with the consent of  Manufacturers  Life  Insurance
Company  (if  required)  the policy  relating to the Group  Retirement  Plan for
Salaried  Employees of Dynatech  Hong Kong Ltd.  (the "Plan") is assigned to the
relevant  Buyer or the Plan is otherwise  novated or arranged as agreed  between
Dynatech Hong Kong Ltd. and the relevant  Buyer,  Dynatech Hong Kong Ltd.  shall
issue  written   instructions  to  Manufacturers   Life  Insurance   Company  to
discontinue  the Plan,  with the  intent  that the  assets of the Plan  shall be
distributed to the Hong Kong Employees pursuant to the provisions and conditions
of the Plan document.

SECTION 8.  [INTENTIONALLY OMITTED]

SECTION 9.  INDEMNIFICATION.

         9.1 INDEMNIFICATION BY THE SELLERS.  The Buyers, upon demand,  shall be
indemnified by the Sellers,  jointly and  severally,  for the full amount of all
Damages (as defined in Section 9.7 below)  suffered by the Buyers as a direct or
indirect result of:

     (i) the breach of any  representation or warranty made by the Sellers in or
pursuant to this Agreement (including without limitation the representations and
warranties set forth in Section 2);


                                                        35

<PAGE>



     (ii) any failure by the Sellers to perform  any  obligation  or comply with
any  covenant  or  agreement  of the  Sellers  specified  herein or in any other
document executed at the Closing;

     (iii) any claim for severance payments or other liabilities with respect to
the  termination  of any  employee  (other than a  Transferred  Employee) by the
Sellers, any claim alleging the wrongful termination of any employee (other than
a  Transferred  Employee)  by  the  Sellers,  any  claim  with  respect  to  the
termination or modification of any of the Sellers' employee benefit plans or the
benefits  provided  thereunder  and any claim with respect to injury or death of
employees  engaged in the Business  arising out of events occurring prior to the
Closing,  and all liabilities and expenses in connection with the employment (or
termination  thereof) of any person other than a  Transferred  Employee for whom
liability  transfers to any Buyer by virtue of the Transfer  Regulations  (or by
virtue of any similar law or regulation in any other country) in connection with
this Agreement (provided,  however,  that the Buyers agree to notify the Sellers
as soon as is reasonably  practicable  after any discovery  thereof and will, at
the request of the Sellers, terminate the employment of any such person);

     (iv) any claim asserted with respect to the Excluded Liabilities;

     (v) the  failure  of the  Sellers  to obtain the  protections  afforded  by
compliance with the notification and other  requirements of the bulk sales laws,
fraudulent  conveyance  laws or other laws for the  protection  of  creditors in
force in the  jurisdictions  in which such laws may be  applicable to either the
Sellers or the transactions contemplated by this Agreement;

     (vi) any claim  (including,  without  limitation,  claims alleging death or
injury to persons or damage to  property),  whether  based in tort,  contract or
otherwise resulting from or caused by any product sold, or service provided,  by
any  Dynatech  Entity  prior to the Closing  (other than claims with  respect to
product or service  warranties  for products or services of the Business sold or
delivered by any of the Dynatech Entities prior to the Closing,  as contemplated
by Sections 1.3(c) and 5.5 hereof); and

     (vii) any liability of any kind,  arising  directly or indirectly  out of a
default under,  or a breach of, any contract or commitment of any kind by any of
the Dynatech Entities prior to the Closing.

         9.2 LIMITATIONS ON INDEMNIFICATION BY THE SELLERS.  Notwithstanding the
foregoing Section 9.1, the right of the Buyers to indemnification  under Section
9.1(i) shall be subject to the following provisions:

                  (a) No  indemnification  shall be payable to the Buyers by any
Seller   pursuant  to  Section  9.1(i)  unless  the  total  of  all  claims  for
indemnification  pursuant to Section  9.1(i)  shall exceed 1.25% of the Purchase
Price (as adjusted in accordance with Section 1.4(b)

                                                        36

<PAGE>



hereof) in the aggregate,  whereupon only the amount of such claims in excess of
the foregoing threshold amount shall be recoverable in accordance with the terms
hereof.

                  (b) No indemnification shall be payable to the Buyers pursuant
to  Section  9.1(i)  for  amounts  in  excess of 75% of the  Purchase  Price (as
adjusted in accordance with Section 1.4(b) hereof) in the aggregate.

                  (c) No indemnification shall be payable to the Buyers pursuant
to Section  9.1(i) with respect to any claim asserted by the Buyers after August
7,  1997 (the  "Indemnification  Cut-Off  Date");  provided,  however,  that the
foregoing  shall  not  apply  to  Claims   resulting  from  any  breach  of  the
representations  and  warranties  contained in (i) the first sentence of Section
2.1; (ii) the second sentence of Section 2.3; (iii) Section 2.4; or (iv) Section
2.6(c).

         9.3 INDEMNIFICATION BY THE BUYERS. The Sellers,  upon demand,  shall be
indemnified  by the Buyers,  jointly and  severally,  for the full amount of all
Damages suffered by the Sellers as a direct or indirect result of:

     (i) the breach of any  representation  or warranty made by the Buyers in or
pursuant to this Agreement (including without limitation the representations and
warranties set forth in Section 3);

     (ii) any failure by the Buyers to perform any obligation or comply with any
covenant or agreement of the Buyers  specified  herein or in any other  document
executed at the Closing;

     (iii) any claim for  payments  or other  liabilities  with  respect  to the
employment (or the termination thereof) of any Transferred  Employee,  any claim
alleging  the wrongful  termination  of any  Transferred  Employee by the Buyers
(including,  without  limitation,  constructive  dismissal  of  any  Transferred
Employee  outside of the United States  resulting from a difference  between the
terms and conditions of employment (including,  without limitation,  differences
in pension  benefits and death in service  benefits) after the Closing and those
in effect prior to the Closing),  any claim with respect to the  termination  or
modification  of any of the  Buyers'  employee  benefit  plans  or the  benefits
provided  thereunder  and any claim  with  respect to the injury or death of any
Transferred Employee arising out of events occurring after the Closing;

     (iv) any claim asserted with respect to the Liabilities;

     (v) any claim  (including,  without  limitation,  claims  alleging death or
injury to persons or damage to  property),  whether  based in tort,  contract or
otherwise resulting from or caused by any product sold, or service provided,  by
the Buyers subsequent to the Closing; and


                                                        37

<PAGE>



     (vi) any activities of the Buyers after the Closing, whether arising out of
the  operation  of the Business or the  ownership  or use of the Subject  Assets
after  the  Closing,   including   without   limitation  any  violation  of  any
Environmental  Law resulting from the conduct of the Business by any Buyer after
the Closing Date (provided,  however,  that nothing in this clause (vi) shall be
construed to limit the scope of any representation,  warranty or covenant of the
Sellers made herein or to otherwise  limit or affect the Sellers'  obligation to
indemnify the Buyers pursuant to Section 9.1 hereof).

         9.4 LIMITATIONS ON INDEMNIFICATION BY THE BUYERS.  Notwithstanding  the
foregoing  Section  9.3,  the  rights of the  Sellers to  indemnification  under
Section 9.3(i) shall be subject to the following provision:

                  (a) No indemnification  shall be payable to the Sellers by any
Buyer   pursuant  to  Section   9.3(i)  unless  the  total  of  all  claims  for
indemnification  pursuant to Section  9.3(i)  shall exceed 1.25% of the Purchase
Price (as adjusted in accordance  with Section  1.4(b) hereof) in the aggregate,
whereupon  only the amount of such claims in excess of the  foregoing  threshold
amount shall be recoverable in accordance with the terms hereof.

                  (b)  No  indemnification  shall  be  payable  to  the  Sellers
pursuant to Section  9.3(i) for amounts in excess of 75% of the  Purchase  Price
(as adjusted in accordance with Section 1.4(b) hereof) in the aggregate.

                  (c)  No  indemnification  shall  be  payable  to  the  Sellers
pursuant  to Section  9.3(i) with  respect to any claim  asserted by the Sellers
after the Indemnification  Cut-Off Date; provided,  however,  that the foregoing
shall not apply to Claims resulting from any breach of the  representations  and
warranties contained in (i) Section 3.1; (ii) Section 3.2; or (iii) Section 3.3.

         9.5      NOTICE; DEFENSE OF CLAIMS.

                  (a) Promptly after receipt by any indemnified  party of notice
of any claim,  liability  or expense  to which the  indemnification  obligations
hereunder are reasonably  likely to apply,  such party shall give notice thereof
in  writing to (i)  Dynatech,  in the case of an  indemnification  demand by the
Buyers, or (ii)  BioAnalysis,  in the case of an  indemnification  demand by the
Sellers (as the case may be, the "Indemnifying  Party"). Such notice shall state
the  information  then available  regarding the amount and nature of such claim,
liability or expense.

                  (b) The Indemnifying  Party shall have the right,  exercisable
upon written notice to the party  demanding  indemnification  (the  "Indemnified
Party") within 20 days after receiving the notice referred to in Section 9.5(a),
at its expense, to defend,  contest,  protest,  settle and otherwise control the
resolution of any such claim, action or proceeding. The Indemnifying Party shall
keep the  Indemnified  Party apprised of  developments  with respect to any such
claim,  action or proceeding,  and the Indemnified Party shall have the right to
consult

                                                        38

<PAGE>



with  the  Indemnifying  Party,  and  to  participate  therein,  subject  to the
Indemnifying  Party's  right of  control  thereof,  at the  Indemnified  Party's
expense and with counsel selected by the Indemnified  Party. If the Indemnifying
Party shall notify the Indemnified Party that the Indemnifying Party has elected
to assume any such  defense,  contest or protest,  then the  Indemnifying  Party
shall not be liable to the  Indemnified  Party  hereunder for any legal or other
expense subsequently incurred by the Indemnified Party in connection therewith.

                  (c) If the Indemnifying  Party does not notify the Indemnified
Party of its  election to defend any claim as provided in Section  9.5(b),  then
the Indemnified Party may defend, contest, protest, settle and otherwise control
the resolution of such claim, action or proceeding.  The Indemnified Party shall
keep the  Indemnifying  Party apprised of developments  with respect to any such
claim, action or proceeding,  and the Indemnifying Party shall have the right to
consult with the Indemnified Party, and to participate  therein,  subject to the
Indemnified  Party's  right of  control  thereof,  at the  Indemnifying  Party's
expense and with counsel selected by the Indemnifying Party. If such event, then
the Indemnified  Party shall not be liable to the  Indemnifying  Party hereunder
for any legal or other expense  subsequently  incurred by the Indemnifying Party
in connection therewith.

         9.6 PAYMENT OF CLAIMS; ARBITRATION.  All claims (other than claims made
by third  parties  which are the  subject of a good faith  dispute  between  the
Indemnified Party (or the Indemnifying Party) and any such third party) shall be
paid or  otherwise  satisfied  by the  Indemnifying  Party  within 60 days after
notice thereof is given by the Indemnified  Party. If within said 60-day period,
the Indemnifying Party indicates in a writing delivered to the Indemnified Party
that it  disputes  the  nature or  amount of the  claim,  the  dispute  upon the
election  of any party  hereto  after said  60-day  period  shall be referred to
Endispute to be settled by  arbitration in Boston,  Massachusetts  in accordance
with  the  commercial  arbitration  rules  of said  organization.  The  fees and
expenses of the arbitrator  shall be borne by the parties in such proportions as
shall be determined  by the  arbitration,  or if there is no such  determination
then such fees and expenses shall be borne equally by (a) the Indemnifying Party
and (b) the Indemnified  Party.  The  determination  of the arbitrator as to the
amount, if any, of the  indemnification  claim which is properly allowable shall
be  conclusive  and binding upon the parties  hereto and judgment may be entered
thereon in any court having jurisdiction thereof.

         9.7 DEFINITION OF DAMAGES.  An  Indemnified  Party shall be entitled to
recover the full amount of any liabilities, expenses, costs or loss incurred due
to  the  matter  for  which  indemnification  is  sought,  including  reasonable
attorney's fees incurred in connection therewith,  but any recovery shall be net
of any economic  benefit to which the Indemnified  Party is entitled due to such
liabilities, expenses, costs or loss, including, without limitation, (i) any tax
refund,   reduction  or  benefit,   (ii)  any  insurance   proceeds   (excluding
self-insured   amounts  and   deductible   amounts)   and  (iii)  any   warranty
reimbursements   (collectively,   "Damages").   Notwithstanding  the  foregoing,
insurance  proceeds to which the  Indemnified  Party may be  entitled  shall not
reduce the Damages  recoverable from the  Indemnifying  Party if the Indemnified
Party shall  determine,  in good faith,  that filing a claim  therefor  would be
likely  either to result in (i) a significant  increase in the premiums  payable
with respect to the

                                                        39

<PAGE>



continuation  of  such  insurance  coverage  or  (ii)  the  cancellation  of the
applicable  policy.  In no event shall any Indemnified Party be awarded punitive
or multiple damages.

         9.8 LIMITATION ON REMEDIES.  It is  specifically  understood and agreed
that, in the absence of knowing and  intentional  fraud by any party hereto,  in
the event a misrepresentation or breach of warranty or covenant is discovered by
any party after the Closing,  such party's  remedies  shall be limited solely to
the indemnification set forth in this Section 9 of this Agreement.

SECTION 10.  MISCELLANEOUS.

         10.1  BULK  SALES  LAW.   Subject  to  the   Sellers'   indemnification
obligations under Section 9.1(v)  hereunder,  the Buyers waive compliance by the
Sellers with the provisions of any applicable bulk sales,  fraudulent conveyance
or other law for the protection of creditors in connection  with the transfer of
the Subject Assets under this Agreement.

         10.2     FEES AND EXPENSES.

                  (a)  Each of the  Sellers,  on the one  hand,  and each of the
Buyers,  on the other hand,  will bear their own expenses in connection with the
negotiation  and  the  consummation  of the  transactions  contemplated  by this
Agreement,  including,  without limitation,  any broker's commission or finder's
fee  incurred  by any of such  parties.  Dynatech  will pay all of the  expenses
incurred by Dynatech GmbH in connection with this Agreement and the consummation
of the transactions contemplated hereby.

                  (b) Except as provided in Section  1.10 with  respect to sales
and  transfer  taxes on the  Subject  Assets,  the  Buyers  will  pay all  costs
incurred,  whether at or  subsequent  to the  Closing,  in  connection  with the
transfer of the Subject Assets to the Buyers as  contemplated by this Agreement,
including without  limitation,  all recording charges and fees applicable to the
recordation of deeds and mortgages and other  instruments  of transfer;  and all
costs of obtaining or  transferring  permits,  registrations,  applications  and
other tangible and intangible properties.

     10.3 GOVERNING LAW. This Agreement shall be construed under and governed by
the internal laws of the  Commonwealth  of  Massachusetts  without regard to its
conflict of laws provisions.

         10.4  NOTICES.  Any  notice,  request,  demand  or other  communication
required or permitted  hereunder shall be in writing and shall be deemed to have
been given if delivered or sent by facsimile  transmission or overnight courier,
upon receipt, or if sent by registered or certified mail, upon the sooner of the
date on which  receipt is  acknowledged  or the  expiration  of three days after
deposit in United States post office facilities  properly addressed with postage
prepaid. All notices to a party will be sent to the addresses set forth below or
to such other  address or person as such party may  designate  by notice to each
other party hereunder:

                                                        40

<PAGE>



 TO SELLERS:                                 c/o Dynatech Corporation
                                         3 New England Executive Park
                                         Burlington, MA  01803
                                         Attn.:   Roger C. Cady, Vice President
                                                  Business Development

 In each case, with a copy to:           Goodwin, Procter & Hoar
                                         Exchange Place
                                         Boston, MA  02109
                                         Attn.:  Edward T. O'Dell, Jr., P.C.

 TO BUYERS:                              c/o Thermo BioAnalysis Corporation
                                         27 Forge Parkway
                                         Franklin, MA  02038
                                         Attn.:   Barry S. Howe, Chief Executive
                                                  Officer

 In each case, with a copy to:           Thermo Electron Corporation
                                         81 Wyman Street
                                         P.O. Box 9046
                                         Waltham, MA 02254-9046
                                         Attn.:  General Counsel

Any  notice  given  hereunder  may be given on behalf of any party by counsel to
such party or other authorized representatives.

         10.5     ENTIRE AGREEMENT.

                  (a) This  Agreement,  including the Disclosure  Memorandum and
Exhibits  referred  to herein  and the other  writings  specifically  identified
herein or contemplated hereby, is complete, reflects the entire agreement of the
parties with respect to its subject matter,  and supersedes all previous written
or oral negotiations,  commitments and writings;  no promises,  representations,
understandings,  warranties and agreements  have been made by any of the parties
hereto  except  as  referred  to  herein or in such  Disclosure  Memorandum  and
Exhibits or in such other  writings,  and all  inducements to the making of this
Agreement  relied upon by either party hereto have been  expressed  herein or in
such Disclosure Memorandum or Exhibits or in such other writings.

                  (b) The parties  acknowledge  and agree that the terms of this
Agreement, including the scope and content of the representations and warranties
of the parties in Sections 2 and 4, and the  indemnification  provisions and the
limitations  thereon in Section 9, have been  negotiated  by the parties and are
intended to be the full statement of the parties'  agreement with respect to the
matters set forth therein. The parties therefore agree that, notwithstanding the
terms  of any  local  transfer  agreement,  instrument  of  assignment  or other
agreement or

                                                        41

<PAGE>



document intended to effect or supplement the transactions  contemplated  hereby
in any jurisdiction other than the United States (a "Local Transfer Agreement"),
in the event of any  inconsistency  between the terms of this  Agreement and any
Local Transfer Agreement, the terms of this Agreement shall govern and control.

                  (c) The execution and delivery of any Local Transfer Agreement
shall be subject to the consummation of the transactions contemplated hereby and
shall not be effective  unless and until the Closing  hereunder  takes place. If
the Closing  hereunder  does not take place or if this  Agreement is terminated,
any Local Transfer Agreement shall be null and void and of no force or effect.

         10.6  ASSIGNABILITY;  BINDING  EFFECT.  This  Agreement  shall  only be
assignable  by  the  Buyers  to  one  or  more   corporations   or  partnerships
controlling,  controlled by or under common control with the Buyers upon written
notice to Dynatech,  provided that such assignment  shall not relieve the Buyers
of any of their obligations hereunder. This Agreement may not be assigned by the
Sellers without the prior written  consent of BioAnalysis.  This Agreement shall
be binding  upon and  enforceable  by, and shall  inure to the  benefit  of, the
parties hereto and their respective successors, and permitted assigns.

         10.7  CAPTIONS  AND  GENDER.  The  captions in this  Agreement  are for
convenience only and shall not affect the construction or  interpretation of any
term or provision hereof.  The use in this Agreement of the masculine pronoun in
reference  to a party  hereto  shall be deemed to include the feminine or neuter
pronoun, as the context may require.

         10.8 EXECUTION IN COUNTERPARTS.  For the convenience of the parties and
to  facilitate  execution,  this  Agreement  may be  executed  in  two  or  more
counterparts,  each of which shall be deemed an original, but all of which shall
constitute one and the same document.

         10.9 AMENDMENTS. This Agreement may not be amended or modified, nor may
compliance with any condition or covenant set forth herein be waived,  except by
a writing duly and validly  executed by each party  hereto,  or in the case of a
waiver, the party waiving compliance.

         10.10  PRESS  RELEASES.  The  content  of  any  press  release  of  the
consummation  of the  transactions  contemplated  by this Agreement by any party
hereto shall be subject to the review and approval of BioAnalysis  and Dynatech,
such review to be timely and such approval not to be unreasonably withheld.



                                                        42

<PAGE>



         10.11  CONSENT TO  JURISDICTION.  Solely for the  purpose of allowing a
party to enforce its  indemnification  and other rights  hereunder,  each of the
parties hereby consents to personal  jurisdiction,  service of process and venue
in the federal or state courts of Massachusetts.






                    [REMAINDER OF PAGE INTENTIONALLY BLANK.]


                                                        43

<PAGE>



                        PURCHASE AGREEMENT SIGNATURE PAGE

         IN WITNESS  WHEREOF  the parties  hereto  have  executed or caused this
Agreement to be executed by their duly authorized representatives as of the date
set forth above.


                            DYNATECH LABORATORIES, INC.


                            By:   ROBERT H. HERTZ
                                  Title:


                            DYNATECH HONG KONG LTD.


                            By:   ROBERT H. HERTZ
                                  Title:


                            DYNATECH CORPORATION LIMITED


                            By:   ROBERT H. HERTZ
                                  Title:


                         LABORATOIRES DYNATECH, S.A.R.L.


                             By:  ROBERT H. HERTZ
                                  Title:



                                44

<PAGE>



                        DYNATECH MEDICAL PRODUCTS LIMITED


                             By:   ROBERT H. HERTZ
                                   Title:


                             DYNATECH CORPORATION


                             By:   ROBERT H. HERTZ
                                   Title: Chief Financial Officer and
                                    Treasurer


                         THERMO BIOANALYSIS CORPORATION


                             By:   BARRY S. HOWE
                                   Title:


                             THERMO BIOANALYSIS LIMITED


                             By:   Barry S. Howe
                                   Title:


                              THERMO BIOANALYSIS (GUERNSEY) LIMITED


                              By:   JOHN A. PIKE
                                    Title:     Director



                                 45

<PAGE>


                              THERMO BIOANALYSIS SA


                              By:   PIERRE CAUDY
                                    Title:  President du Conseil
                                            d'Administration


                                    DLW INC.


                               By:  BARRY S. HOWE
                                    Title:


                               BIOANALYSIS INTERNATIONAL SALES INC.


                               By:   BARRY S. HOWE
                                     Title:


                         THERMO INSTRUMENT SYSTEMS INC.


                               By:   BARRY S. HOWE
                                     Title:




                                                        46








                                                  NEWS RELEASE

For Immediate Release                         Contact:  Robert H. Hertz
                                                        Chief Financial Officer

                                                        Steve Cantor
                                                        Manager, Corp. Comm.
                                                        (617) 272-6100


                   DYNATECH SELLS MEDICAL AND DIAGNOSTIC UNIT

BURLINGTON,  Mass.,  February 5, 1996 . . . Dynatech Corporation (Nasdaq symbol:
DYTC) announced today that it signed an agreement to sell the assets of Dynatech
Laboratories  Worldwide  (DLW)  for  approximately  $43  million  in  cash.  The
purchaser is Thermo BioAnalysis, a subsidiary of Thermo Instrument Systems, Inc.
(Amex symbol: THI). Based in Chantilly, Virgina, Dynatech Laboratories Worldwide
manufactures  automated Microtiterr equipment and disposable plasticware used in
medical research and clinical  immunodiagnostic testing.

John F. Reno, president and chief executive officer, said: "The sale of Dynatech
Laboratories   Worldwide   reflects  our  strategic   focus  as  a  supplier  of
communication  technologies solutions. We are pleased that Thermo BioAnalysis is
offering employment to all DLW personnel.

"The sale provides  additional  financial  resources to fund our core businesses
that are leaders in  high-growth,  competitive  markets and to expand our market
position with highly focused acquisitions," said Reno.

Dynatech Corporation supplies products for the support of voice, video, and data
communications.  Headquartered in Burlington,  Massachusetts, Dynatech sells its
products worldwide through subsidiaries located throughout the Americas,  Europe
and Asia.





                                                  NEWS RELEASE


For Immediate Release                         Contact:  Steve Cantor
                                                        Manager, Corp. Comm.
                                                        (617) 272-6100

                                                        R.A. McDonough
                                                        The Bridgeford Group
                                                        (212) 476-8720


                        DYNATECH'S NEXT STRATEGIC MOVES
                     DESIGNED TO ENHANCE GROWTH AND PROFITS

BURLINGTON,  Mass.,  February  7,  1996.  . . On the heels of  reporting  record
thirdquarter  earnings per share,  Dynatech  Corporation  (Nasdaq symbol:  DYTC)
announced  today that to further  focus the company on its leading,  high-growth
businesses  it will divest its  broadcast  video  equipment  and  selected  data
transmission operations.

John F. Reno,  Dynatech's  president and chief  executive  officer,  said,  "Our
ongoing  mission  is to be in  communications  businesses  which are  leaders in
highgrowth markets. The remaining  businesses - Communications Test,  Industrial
and Scientific  Communications  Systems, and Video Technologies - are consistent
with that mission. Furthermore, the proceeds from the divestitures provide means
to make  additional  investments  in those  businesses  and to consider  focused
acquisitions,  like  that  of  Tele-Path  Industries  in  September  1995  which
significantly added to our market position and growth prospects."

As a second part of an overall program to further  increase  shareholder  value,
the company announced that its Board of Directors has authorized a repurchase of
up to one million  shares of common  stock from time to time through open market
purchases and negotiated  transactions.  The company may use repurchased  shares
for employee plans and other corporate purposes.

Including  medical  and  diagnostic  operations  previously  marked  for sale or
already sold, the company indicated that in total there are 11 businesses slated
for  divestiture  which account for about $180 million in annual  revenues.  The
company  anticipates these divestitures to generate net proceeds of in excess of
$100 million and a small capital gain.

Mr.  Reno  continued,  "With  the sale of our  medical  businesses  we will have
accomplished  our  objective  of  becoming  a  focused   communications  network
solutions company.  The additional  divestitures will bring even more clarity to
our  business  mission  of market  leadership  and  growth  and will allow us to
concentrate our resources on our areas of greatest strength."

"Given the historical  performance of the remaining  businesses and their growth
prospects,  we believe our  actions  will  result in greater  profitability  and
growth. Two of the businesses to be sold reported  significant  operating losses
for the first nine months of fiscal 1996," noted Mr. Reno.

On a proforma  basis,  the three  remaining  businesses -  Communications  Test,
Industrial  and  Scientific   Communications  Systems,  and  Video  Technologies
contribute  approximately  60%,  20%,  and  20%,  respectively,   of  aggregated
annualized  revenues  of about  $290  million.  Over the  previous  four  years,
revenues  of these  operations  have  grown at a  compound  annual  rate of 19%.
Through  the first  nine  months  of  fiscal  1996,  these  operations  reported
operating income as a percentage of sales of 13.8% on a proforma basis excluding
nonrecurring charges, compared with 7.8% as reported.

Dynatech has retained The Bridgeford  Group,  the investment  banking firm which
previously advised the company on a number of successful divestitures, to assist
in the  disposition  process  which is expected to be completed  within 12 to 18
months.

Dynatech  Corporation is a global  communications  equipment  company focused on
network  technology  solutions.   Its  products  address   communications  test,
industrial and scientific  communications,  and video  technology  applications.
Headquartered  in  Burlington,   Massachusetts,   Dynatech  sells  its  products
worldwide through subsidiaries located throughout the Americas, Europe and Asia.


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