AGREEMENT AND PLAN OF MERGER

     This AGREEMENT AND PLAN OF MERGER is dated as of May 17, 1997, by and among
ADVANCED TECHNOLOGY  MATERIALS,  INC., a Delaware  corporation  ("Buyer"),  WELK
ACQUISITION CORPORATION, a Delaware corporation and a wholly-owned subsidiary of
Buyer  ("Buyer  Sub"),   ATMI  HOLDINGS,   INC.,  a  Delaware   corporation  and
wholly-owned   subsidiary   of   Buyer   ("Holdings")   LAWRENCE   SEMICONDUCTOR
LABORATORIES,  INC., an Arizona corporation ("LSL"), and LAWRENCE  SEMICONDUCTOR
LABORATORIES  MARKETING AND SALES, INC., an Arizona corporation  ("LSLMS");  LSL
and LSLMS are referred to collectively as "Lawrence"; and all of the parties are
referred to collectively as the "Companies". Buyer Sub and Lawrence are referred
to  collectively  as  the  "Constituent  Corporations"  and  individually  as  a
"Constituent Corporation."

     Buyer and Holdings are parties to that certain Agreement and Plan of Merger
and  Exchange  dated  April 7,  1997,  by and among  Buyer,  Holdings,  Advanced
Delivery & Chemical Systems Nevada,  Inc.,  Advanced Delivery & Chemical Systems
Manager,  Inc.,  Advanced  Delivery & Chemical Systems  Holdings,  LLC, Advanced
Delivery & Chemical Systems Operating, LLC, and Advanced Delivery & Chemical
Systems, Ltd. (the "ADCS Merger Agreement").

     In connection with the closing of the transactions contemplated by the ADCS
Merger Agreement,  inter alia (i) all of the outstanding  shares of Buyer common
stock, par value $.01 per share("Buyer Common Stock") will be converted into the
right to receive a like number of shares of  Holdings  common  stock,  par value
$.01  per  share  ("Holdings  Common  Stock"),  and  (ii)  Buyer  will  become a
wholly-owned subsidiary of Holdings.

     The  respective  Boards of Directors of the Companies deem it advisable and
in the best  interests  of their  respective  shareholders  that  Buyer  acquire
Lawrence  by the merger of Buyer Sub with and into  Lawrence  upon the terms and
subject to the conditions set forth in this Agreement (the "Merger").

     The  parties  desire the Merger to be a tax-free  reorganization  under the
Internal  Revenue  Code of 1986,  as  amended,  and for such  transaction  to be
accounted for as a pooling of interests.

     In  consideration  of the  foregoing  and the  respective  representations,
warranties,  covenants and  agreements  set forth  herein,  the parties agree as
follows:

                                    ARTICLE I

                                   The Merger

     1.1 The Merger.  Subject to the terms and conditions of this Agreement,  at
the Effective Time (defined below) of the Merger, Buyer Sub shall be merged with
and into Lawrence,  with Lawrence being the surviving corporation in such Merger
(the  "Surviving  Corporation").  The  separate  existence  of Buyer  Sub  shall
thereupon  cease. The Merger shall have the effects set forth in Section 10-1106
of the  Arizona  Business  Corporation  Act (the  "ABCA") and Section 259 of the
Delaware  General  Corporation  Law  (the  "DGCL").  Immediately  following  the
Effective Time, the Surviving Corporation shall be a wholly-owned  subsidiary of
Buyer.

     1.2 Effective  Time of the Merger.  The Merger shall become  effective upon
the completion of the filing of properly  executed Articles of Merger and a Plan
of Merger with the Arizona Corporation  Commission and the Secretary of State of
the State of Delaware,  which filing shall be made on the Closing Date  (defined
below) after satisfaction of the conditions set forth in Article VIII. When used
in this  Agreement,  the term  "Effective  Time" shall mean the date and time at
which such Articles of Merger and Plan of Merger are accepted as filed.





                                   ARTICLE II

                       Buyer and the Surviving Corporation

     2.1 Articles of Incorporation of the Surviving Corporation. The Articles of
Incorporation   of  the   Surviving   Corporation   shall  be  the  Articles  of
Incorporation  of Lawrence,  as amended in connection with the Merger to read in
its  entirety  (other than with respect to the name of the  corporation)  as the
Certificate of  Incorporation  of Buyer Sub in effect  immediately  prior to the
Effective Time, with such changes as Buyer may determine are necessary or proper
to comply with Arizona law, until thereafter amended as provided by law.

     2.2  Bylaws of the  Surviving  Corporation.  The  Bylaws  of the  Surviving
Corporation  shall be the Bylaws of Lawrence,  as amended in connection with the
Merger to read in their  entirety  (other  than with  respect to the name of the
corporation)  as the  Bylaws  of Buyer Sub in  effect  immediately  prior to the
Effective Time, with such changes as Buyer may determine are necessary or proper
to comply with Arizona law, until thereafter amended as provided by law.

  2.3 Directors and Officers of the Surviving Corporation.

     (a) The directors of Buyer Sub at the  Effective  Time shall be the initial
directors of the Surviving  Corporation and shall hold office from the Effective
Time  until  their  respective  successors  are duly  elected or  appointed  and
qualified in the manner provided in the Articles of Incorporation  and Bylaws of
the Surviving Corporation, or as otherwise provided by law.

     (b) The  officers of Buyer Sub at the  Effective  Time shall be the initial
officers of the Surviving  Corporation  and shall hold office from the Effective
Time until  removed or until their  respective  successors  are duly  elected or
appointed and qualified in the manner provided in the Articles of  Incorporation
and Bylaws of the Surviving Corporation, or as otherwise provided by law.

                                   ARTICLE III

                               Exchange of Shares

     3.1  Disposition  of Buyer Sub Shares;  Lawrence  Treasury  Shares.  At the
Effective  Time,  by virtue of the Merger and  without any action on the part of
the holder thereof:

     (a) The  shares  of Buyer  Sub  common  stock  which  shall be  outstanding
immediately  prior to the  Effective  Time shall be  converted  into a number of
shares of  common  stock of the  Surviving  Corporation  equal to the  number of
shares of common stock of Buyer Sub then outstanding.

     (b) Each share of common stock of Lawrence  ("Lawrence  Share") held in the
treasury of  Lawrence,  if any, or by any  subsidiary  of Lawrence and each such
Lawrence Share held by Buyer or any subsidiary of Buyer immediately prior to the
Effective  Time  shall be  canceled  and  retired  and  cease to  exist,  and no
consideration shall be given in exchange therefor.

  3.2 Exchange of Lawrence Shares.

     (a) Each Lawrence Share outstanding immediately prior to the Effective Time
(other than Lawrence Shares canceled as set forth in Subsection 3.1(b) above, if
any)  shall,  at the  Effective  Time,  by virtue of the Merger and  without any
action on the part of the holder thereof, be converted into the right to receive
in shares of Buyer Common Stock, valued at the Average Closing Price (defined in
Section  3.9  below),  an amount  equal to that  described  in Section 3.4 below
divided by the number of Lawrence Shares  outstanding  immediately  prior to the
Effective  Time  (subject to  adjustment as provided in Sections 3.4 and 3.5 and
subject  to  reduction  as  provided  in  Article X and the  Escrow  Agreement),
ninety-five percent (95%) of which amount prior to adjustment and reduction,  if
any (the  "Preliminary  Purchase Price  Shares"),  shall be issued to the holder
thereof upon the




     surrender of the certificate  formerly  representing such Lawrence Share in
accordance with this Section 3.2, and five percent (5%) of which amount prior to
adjustment and reduction, if any (the "Indemnification Escrow Shares"), shall be
held by the escrow  agent (the  "Escrow  Agent") as provided  for in  Subsection
10.1(c) hereof.

     (b)  Immediately  following  the  Effective  Time,  each  record  holder (a
"Shareholder")  of any certificate or certificates  which,  immediately prior to
the Effective Time, represented outstanding Lawrence Shares (the "Certificates")
whose Lawrence  Shares were converted into the right to receive a portion of the
Purchase  Price  (defined  below)  shall be  entitled  to  surrender  his or its
Certificates  to Buyer for  cancellation in exchange for the  Shareholder's  pro
rata share of the Preliminary  Purchase Price Shares, and Buyer hereby agrees to
cause such Shareholder's pro rata share of the Preliminary Purchase Price Shares
to be issued to such  person at such  time.  If any  Shareholder  shall  fail to
surrender his or its Certificates  promptly  following the Effective Time, Buyer
shall send to such Shareholder  notice of the Merger and instructions for use in
effecting the surrender of the  Certificates  in exchange for the  Shareholder's
pro rata share of the Purchase Price and the holder of such  Certificates  shall
be entitled to receive in exchange  therefor solely the  Shareholder's  pro rata
share of the Purchase Price less any applicable  stock transfer taxes,  and such
Certificates  shall forthwith be canceled.  No interest shall be paid or accrued
for the benefit of holders of the Certificates on the consideration payable upon
the surrender of the Certificates.  It shall be a condition of exchange that the
Certificate  so  surrendered  shall be properly  endorsed or otherwise in proper
form for transfer.

     (c) From and after the Effective  Time,  there shall be no transfers on the
stock transfer books of the Surviving  Corporation of the Lawrence  Shares which
were  outstanding  immediately  prior  to the  Effective  Time.  If,  after  the
Effective  Time,  Certificates  are presented to the Surviving  Corporation  for
exchange,  they  shall be  canceled  and  exchanged  for a pro rata share of the
Preliminary Purchase Price Shares in accordance with the procedures set forth in
this Section and Section 3.4.

     (d) At or prior to the  Effective  Time of the Merger,  Buyer shall deliver
irrevocably  to the Escrow Agent  certificates  evidencing  the  Indemnification
Escrow  Shares,   together  with  appropriate  stock  powers  executed  by  each
Shareholder.  As provided in Article X hereof, the Indemnification Escrow Shares
shall be held in escrow  (the  "Indemnification  Escrow")  by the Escrow  Agent.
Income,   dividends   and   earnings   therefrom   shall  become  funds  of  the
Indemnification  Escrow  to be  disbursed  as  provided  in  Article  X of  this
Agreement and in the Escrow Agreement.

     (e)  Notwithstanding   the  foregoing,   any  Lawrence  Shares  issued  and
outstanding   immediately  prior  to  the  Effective  Time  which  are  held  by
Shareholders  who have not voted such shares in favor of the Merger and who have
complied  with all other  relevant  provisions  of  Chapter  13 of the ABCA (the
"Dissenting Shares") shall not be converted into shares of Buyer Common Stock in
the manner  contemplated  by Section 3.2(a) above,  and the rights of holders of
the  Dissenting  Shares shall be governed by the provisions of Chapter 13 of the
ABCA; provided,  however, that Shareholders that own in the aggregate no greater
than five percent (5%) of the issued and  outstanding  Lawrence  Shares who have
not voted such shares in favor of the Merger (the "Electing  Shares") may elect,
in lieu of following  the  provisions of Chapter 13 of the ABCA, to receive from
Buyer the Average  Closing  Price for each share of Buyer  Common Stock to which
such Shareholder would have been entitled had such Shareholder voted in favor of
the Merger.  Lawrence agrees to notify its  Shareholders in writing prior to the
time the Merger is submitted to them for a vote at any Shareholders'  meeting or
otherwise,  of the foregoing  election.  To be effective,  such election must be
made in writing to Lawrence  and Buyer  within five (5) days of the date of such
Shareholder meeting or other submission for a vote.

     (f)  Notwithstanding  the  foregoing,  if the  closing of the  transactions
contemplated by the ADCS Merger Agreement shall occur on or before the Effective
Time, in lieu of Buyer Common Stock each Lawrence  Share shall be converted into
the right to receive  Holdings  Common Stock in the same ratio as such  Lawrence
Shares  would have been  converted  into shares of Buyer Common  Stock.  In such
event,  all references to "Buyer Common Stock" in this Agreement  (other than in
Article IV) shall be deemed to be references to "Holdings  Common Stock," unless
the context clearly requires  otherwise.  The parties shall modify the ancillary
agreements to be entered into as of the Effective Time as appropriate to reflect
such change.





     3.3 No Further Rights in Lawrence Shares.  All shares of Buyer Common Stock
received by any  Shareholder  pursuant to this Agreement shall be deemed to have
been  delivered and received in full  satisfaction  of all rights  pertaining to
such  Shareholder's  Lawrence  Shares.  At the  Effective  Time,  the holders of
certificates  representing  outstanding  Lawrence Shares shall cease to have any
rights with  respect to such shares  (other than such rights as they may have as
dissenting  shareholders  under the  ABCA),  and their  sole  right  shall be to
receive  their pro rata share of the  Purchase  Price.  Dissenting  shareholders
shall have the rights accorded by the ABCA.

     3.4  The  Purchase  Price.  The  aggregate  merger  consideration  for  all
outstanding  Lawrence  Shares  shall be that  number of  shares of Buyer  Common
Stock,  valued at the  Average  Closing  Price,  having a value  equal to Eighty
Million  Dollars  ($80,000,000)  (the  "Closing  Price")  plus  an  amount  (the
Adjustment Amount,  defined in Subsection 3.4(g) below), which may be a positive
or a negative  number,  as  determined  below,  minus the amount of Two  Million
Dollars  ($2,000,000)  required  to be paid by LSL to  Applied  Materials,  Inc.
("Applied")  pursuant to LSL's  settlement  of its  litigation  with Applied (as
described in Section 5.7 and Schedule 5.7), minus any amounts owed to LSL by any
related  parties as set forth in Schedule  5.26 and minus the cost to LSL of any
payment  required  to be made by LSL  prior to the  Effective  Time to any third
party in connection with any other  transaction  contemplated by LSL,  including
any payment in the nature of a required "break-up" fee (the "Specified Amount"),
subject to further  reduction as provided in Article X and the Escrow  Agreement
("Purchase Price").

     (a) Within sixty (60) days after the  Effective  Time,  the  Representative
(defined in Subsection 3.6(a)(xix) below) shall cause to be delivered to Buyer a
combined  balance sheet of Lawrence as of the close of business at the Effective
Time without inclusion of Lawrence  Semiconductor  Research  Laboratories,  Inc.
("LSRL") or Lawrence  Semiconductor  Investments,  Inc.  ("LSI") (the "Effective
Time Balance Sheet")  together with the related  combined  statements of income,
shareholders'  equity and cash flows for the time period from January 1, 1997 to
the  Effective  Time  (the  "Related  Effective  Time  Statements")  audited  by
Lawrence's current independent accountants, which audit shall include a physical
inventory that  representatives of Buyer may observe. The Effective Time Balance
Sheet and the Related  Effective Time Statements shall be prepared in accordance
with generally accepted accounting principles applied on a basis consistent with
past  practice,  and the Effective  Time Balance Sheet shall fairly  present the
assets and  liabilities  and  financial  condition of Lawrence at the  Effective
Time,  including  the tax  savings  to LSL as a  result  of the  payment  of the
Specified  Amount,  but not including the actual amount of the Specified Amount.
The  reasonable  cost of the audit pursuant to this  Subsection  3.4(a) shall be
borne by the Surviving  Corporation.  After the Effective Time,  Buyer agrees to
give the Representative and Lawrence's current accountants  reasonable access to
Lawrence's  books  and  records  and to  make  available  to such  parties  such
employees  of  Lawrence  and  the  Surviving  Corporation  as may be  reasonably
necessary in  connection  with the  preparation  of the  Effective  Time Balance
Sheet.

     (b) The  Effective  Time  Balance  Sheet shall  become final and binding on
Lawrence and Buyer thirty (30) days after its delivery to Buyer, unless Buyer or
Representative gives written notice to the other of his or its disagreement with
respect to any item included in such Effective  Time Balance Sheet.  During said
thirty (30) day period, Representative,  Buyer and Buyer's representatives shall
be given  reasonable  access to all of the working papers of Lawrence's  current
independent  accountants  for the  purpose of its review of the  Effective  Time
Balance  Sheet.  The party making the objection  shall notify the other party in
writing by the end of such thirty (30) day period of any  objection  it may have
to the Effective Time Balance Sheet, which objection shall identify the basis of
such  objection and any  adjustments to the Effective Time Balance Sheet that it
proposes be made (the "Proposed Adjustments").

     (c) If written  notice of objections to the Effective Time Balance Sheet is
given  within  the  period  specified  in  Subsection  3.4(b)  above,  the party
receiving the notice shall notify the party proposing the Proposed Adjustment of
his or its approval or disapproval of the Proposed  Adjustments to the Effective
Time Balance Sheet contained in such written  objection  within thirty (30) days
of his or its receipt of such  written  objection.  If the party  receiving  the
notice  shall fail to notify the party  proposing  the Proposed  Adjustments  in
writing of his or its disapproval of the Proposed Adjustments within said thirty
(30) day period,  such Proposed  Adjustments shall be made to the Effective Time
Balance Sheet, and the Effective Time Balance Sheet, as so adjusted, shall





     be final and binding upon all parties.  If Representative  and Buyer cannot
reach  agreement  with respect to the Proposed  Adjustments  and the  objections
thereto  within  thirty  (30) days of the date of  receipt  of the notice of the
Proposed  Adjustments  (or such longer  period as may be acceptable to Buyer and
Representative),  Buyer and Representative shall submit the Proposed Adjustments
in dispute to the Arbitrating  Accountants  (defined in Subsection 3.4(f) below)
for  resolution.  The  Arbitrating  Accountants  shall have no authority  (i) to
decide any issues  related to the Effective  Time Balance Sheet other than those
issues expressly referred to them for arbitration  pursuant to the terms hereof,
or (ii) to determine  that any  disputed  Proposed  Adjustment  shall be made in
excess  (negative  or positive)  of the amount  originally  proposed by Buyer or
Representative.

     (d) If the parties  submit a dispute to the  Arbitrating  Accountants,  the
parties  shall  instruct  the  Arbitrating  Accountants  to resolve the disputed
Proposed  Adjustments  within  thirty  (30)  business  days after such  Proposed
Adjustments  are  submitted  to them,  and such  resolution  shall be final  and
binding upon all parties hereto.  Upon such  resolution,  the adjustments to the
Effective Time Balance Sheet determined by the Arbitrating  Accountants shall be
made and the Effective  Time Balance Sheet,  as so adjusted,  shall be final and
binding upon all parties.

     (e) The fees and expenses of the Arbitrating  Accountants  shall be paid by
Buyer;  provided that the portion of such fees and expenses  equal to the lesser
of (i) 100% or (ii) the percentage obtained by dividing (i) the aggregate dollar
amount of the adjustments to the Effective Time Balance Sheet  determined  under
Subsection  3.4(d) by (ii) the aggregate dollar amount of the disputed  Proposed
Adjustments  shall be  reimbursed  to Buyer  from  the  Indemnification  Escrow.
Representative shall have the right to retain legal counsel of its choosing with
regard to any dispute over the Adjustment  Amount (defined in Subsection  3.4(g)
below),  including Polese,  Pietzsch,  Williams & Nolan, P.A., and the costs and
expenses of such representation shall be paid from the Adjustment Amount if that
amount is a positive number and sufficient to so pay the costs and expenses,  or
otherwise from the Indemnification Escrow.

     (f) The "Arbitrating Accountants" shall be a "Big Six" accounting firm that
is mutually agreed to by Buyer and Representative.

     (g) Upon the  Effective  Time Balance  Sheet  (including  any  adjustments)
becoming  final and binding on all parties as set forth  above,  the  Adjustment
Amount shall be determined by the Buyer. The "Adjustment Amount" shall equal the
difference  between (x) the Net Worth (defined  below) as shown on the Effective
Time  Balance  Sheet  and (y) the Net  Worth as shown  on  Lawrence's  unaudited
balance sheet at December 31, 1996 without inclusion of LSRL or LSI. "Net Worth"
shall  equal  the  amount  by  which  assets  exceed   liabilities.   Buyer  and
Representative shall provide notice to the Shareholders of the Adjustment Amount
and final Purchase  Price within two (2) business days of such amounts  becoming
final.

     3.5 Adjustment of Purchase  Price.  If the Adjustment  Amount is a positive
number,  ninety-five  percent  (95%)  of such  amount  shall be paid by Buyer to
Shareholders  pro rata in shares of Buyer  Common  Stock  valued at the  Average
Closing Price and five percent (5%) to Escrow Agent (the "Escrow Adjustment") by
delivering  appropriate  certificates  evidencing  such  shares  within ten (10)
business days of  determination.  If the Adjustment Amount is a negative number,
it shall be paid to Buyer in shares of Buyer  Common Stock valued at the Average
Closing Price from the  Indemnification  Escrow within ten (10) business days of
receipt of notice of determination.

     3.6 Closing. The closing of the transactions contemplated by this Agreement
(the  "Closing")  shall take place at the offices of Shipman & Goodwin  LLP, One
American Row,  Hartford,  Connecticut  06103,  at 9:00 a.m.,  local time, on the
third  business  day after the day on which all of the  conditions  set forth in
Article VIII hereof are satisfied or waived,  or such other date, time and place
as the Companies shall otherwise agree (the "Closing Date").

  (a) At the Closing, Lawrence shall deliver to Buyer the following:

     (i)  Resolutions.  Copies  of  resolutions  of the  Board of  Directors  of
Lawrence  certified by a  Secretary,  Assistant  Secretary or other  appropriate
officer of Lawrence, plus certified copies of its Articles of





     Incorporation  and Bylaws,  as amended to date,  authorizing the execution,
delivery and  performance  of this Agreement and the  transactions  contemplated
hereby and copies of  resolutions  of the  Shareholders  of Lawrence (or written
consent in lieu thereof), certified by a Secretary, Assistant Secretary or other
appropriate  officer  of  Lawrence,  authorizing  the  execution,  delivery  and
performance of this Agreement and the transactions contemplated hereby.

     (ii)  Certificates,  other than those held by any  dissenting  shareholder,
duly endorsed in blank or accompanied by appropriate stock powers.

     (iii)  Resignations  of certain  officers  and all  directors  of  Lawrence
effective as of the Effective  Time,  which Buyer shall request in writing prior
to the Closing.

     (iv)  Opinion  of  Polese,  Pietzsch,  Williams  &  Nolan,  P.A.  in a form
reasonably acceptable to Buyer.

     (v) The Noncompete Agreement called for by Section 7.7.

     (vi) The Consulting Agreement called for by Section 7.8.

     (vii) Tax  clearances  from the  Department  of Economic  Security  and the
Arizona Department of Revenue, and all other jurisdictions in which Lawrence has
filed tax returns in the past three (3) years.

     (viii)  A  certificate  of  good  standing  from  the  Arizona  Corporation
Commission.

     (ix) [Intentionally left blank]

     (x)  Releases  substantially  in the  form  of  Exhibit  3.6(a)(x)  hereto,
executed by Lamonte H.  Lawrence and each other  officer of Lawrence,  releasing
Lawrence from any and all liabilities  and obligations  owed by Lawrence to him,
including  but not  limited to those owed to him in his  capacity as a director,
officer, Shareholder and/or employee of Lawrence.

     (xi)  Written  evidence  satisfactory  to Buyer that the  Shareholders  and
Lawrence  have obtained all necessary  governmental  or other  approvals for the
Merger and the other transactions contemplated hereby.

     (xii) Written  evidence  satisfactory  to Buyer that all prior  outstanding
options to purchase any capital stock of Lawrence have been properly terminated.

     (xiii) Each of the affiliates of Lawrence and Buyer shall have entered into
an Affiliate Agreement  substantially in the form of Exhibit 3.6(a)(xiii)-A (the
"Affiliate  Agreements"),  and  Tommy L.  Thompson,  Gerald W.  McReynolds,  and
Barbara C.  Freund  shall  have  entered  into  Employment  Agreements  with the
Surviving Corporation  substantially in the form of Exhibit  3.6(a)(xiii)-B (the
"Employment Agreements").  The existing employment agreements listed on Schedule
5.8(b) shall have been terminated effective as of the Closing.

     (xiv) Written  evidence  satisfactory to Buyer that Lawrence and LSLMS have
been merged in accordance  with  applicable  law, with Lawrence as the surviving
corporation,  and that all consents and approvals  necessary or appropriate  for
such merger have been obtained.

     (xv)  Written  evidence  satisfactory  to  Buyer  that  Lawrence  has  been
reincorporated  in Arizona  in  accordance  with  applicable  law,  and that all
consents and approvals  necessary or appropriate for such  reincorporation  have
been obtained.

     (xvi) A written  amendment  to the  sublease  of the Tempe  facility  which
causes the  economic  terms of such  sublease to reflect  accurately  Lawrence's
current and intended future use of the Tempe facility, together with the written
consent of LSRL as sublessor to the Merger.

     (xvii) (A) All amounts  currently  outstanding under that certain Agreement
by and among  Lawrence,  LSRL and LSLMS dated  December 31, 1993 shall have been
repaid in full or otherwise  discharged in a manner  satisfactory to Buyer,  and
such Agreement  terminated with no further liability  thereunder;  (B) all other
amounts currently  outstanding by and among Lawrence,  LSRL, LSLMS and LSI shall
have been repaid in full or otherwise  discharged  in a manner  satisfactory  to
Buyer; and (c) all amounts currently outstanding and owed by Lamonte H. Lawrence
to Lawrence and LSLMS or from  Lawrence and LSLMS to Lamonte H.  Lawrence  shall
have been repaid in full or otherwise  discharged  in a manner  satisfactory  to
Buyer.  In lieu of repayment of the net amount  contemplated  by this Subsection
3.6(a)(xvii) in cash, the





     amounts may be satisfied by reducing the Purchase Price, as contemplated by
the second "minus" clause in the first paragraph of this Section 3.4.

     (xviii) Written releases of Lawrence and LSLMS from all further obligations
under those agreements, instruments, documents, etc. identified prior to Closing
by Buyer to which Lawrence  and/or LSLMS are parties or which either or both has
guaranteed but which provide the principal benefit to LSRL, LSI or Lamonte H.
Lawrence.

     (xix) Each  Shareholder  shall have executed and delivered an agreement and
acknowledgment  with respect to his or its  liabilities  and  obligations  under
Article X, in form and substance satisfactory to Buyer and its counsel.

     (xx) Each  Shareholder  shall have  executed and  delivered an  irrevocable
power of attorney coupled with an interest  constituting and appointing  Lamonte
H.  Lawrence  (the  "Representative")  as his or its true and  lawful  agent and
attorney-in-fact to enter into any agreement in connection with the transactions
contemplated by this Agreement and the Escrow Agreement,  to exercise all or any
of the  powers,  authority  and  discretion  conferred  on him  under  any  such
agreement,  to waive any terms and conditions of any such agreement, to give and
receive  notices  on  his  or  its  behalf  and  to  be  his  or  its  exclusive
representative  with respect to any matter,  suit,  claim,  action or proceeding
arising  with respect to any  transaction  contemplated  by any such  agreement,
including,  without  limitation,  the defense,  settlement  or compromise of any
claim,  action or  proceeding  for which  Buyer or any  Indemnitee  (defined  in
Subsection  10.1(b)  below)  may  be  entitled  to   indemnification,   and  the
Representative  shall  have  agreed to act as, and to  undertake  the duties and
responsibilities  of, such agent and attorney-in- fact. The Representative shall
not be liable for any action  taken or not taken by him in  connection  with his
obligations  under such power of attorney  (i) with the consent of  Shareholders
who,  as of the  date  of  this  Agreement,  own a  majority  in  number  of the
outstanding  Lawrence Shares, or (ii) in the absence of his own gross negligence
or willful misconduct.  If the Representative is unable or unwilling to serve in
such capacity,  his successor shall be named by those persons holding a majority
of the outstanding  Lawrence Shares as of the Effective Time who shall serve and
exercise the powers of the Representative.

     (xxi) Such further  instruments or documents as Buyer or Buyer Sub or their
counsel may  reasonably  request to assure the full and effective  completion of
the  Merger  and to  assure  the  effective  carrying  out  of the  transactions
contemplated hereby.

     (b) At the  Closing,  Buyer  shall  deliver  to  Shareholders  certificates
evidencing the Preliminary  Purchase Price Shares in accordance with Section 3.2
hereof.

     (c) At the  Closing,  Buyer  shall  deliver  to Escrow  Agent  certificates
evidencing the  Indemnification  Escrow Shares,  in accordance  with Section 3.2
hereof.

     (d) At the Closing, Buyer shall deliver to Lawrence the following:

     (i) Copies of  resolutions of Buyer and Buyer Sub certified by a Secretary,
Assistant  Secretary  or other  appropriate  officer  of Buyer  and  Buyer  Sub,
authorizing  the execution,  delivery and  performance of this Agreement and the
transactions contemplated hereby.

     (ii)  Opinion  of Buyer's  outside  general  counsel  in a form  reasonably
acceptable to Lawrence.

     (iii) The Noncompete Agreement called for by Section 7.7.

     (iv) The Consulting Agreement called for by Section 7.8.

     (e) At the Closing,  Buyer shall  deliver to the  Shareholders  an executed
Registration Rights Agreement,  in the form of Exhibit 3.6(e). If Section 3.2(f)
shall  apply,  in  lieu  of  the  foregoing,   Holdings  shall  deliver  to  the
Shareholders an executed  Registration Rights Agreement,  in the form of Exhibit
3.6(e) but substituting Holdings for Buyer as a party thereto.





     3.7  Supplementary  Actions.  If, at any time after the Effective Time, any
further  assignments  or  assurances in law or any other things are necessary or
desirable  to  vest  or to  perfect  or  confirm  of  record  in  the  Surviving
Corporation  the  title  to  any  property  or  rights  of  either   Constituent
Corporation,  or otherwise to carry out the  provisions of this  Agreement,  the
officers and directors of the Surviving  Corporation  are hereby  authorized and
empowered  on  behalf  of the  Constituent  Corporations,  in the name of and on
behalf of either Constituent Corporation as appropriate,  to execute and deliver
any and all things necessary or proper to vest or to perfect or confirm title to
such property or rights in the Surviving  Corporation and otherwise to carry out
the purposes and provisions of this Agreement.

     3.8 No Fractional  Securities.  No fractional  shares of Buyer Common Stock
shall be issuable by Buyer to any Shareholder in connection with the Merger.  In
lieu of any such fractional  shares,  each  Shareholder who would otherwise have
been  entitled to receive a fraction of a share of Buyer  Common  Stock shall be
entitled to receive instead an amount in cash equal to such fraction  multiplied
by the Average Closing Price.

  3.9 Average Closing Price.

     (a) The term "Average  Closing Price" shall mean the average  closing price
of Buyer Common Stock on The Nasdaq  National Market for each of the twenty (20)
trading days preceding  (and  including) the third trading day prior to the date
of Buyer's meeting of  stockholders to approve the Merger;  provided that (i) in
the event that the  Average  Closing  Price is greater  than $21 per share,  the
Average Closing Price shall be deemed to be $21 per share; and (ii) in the event
that the Average  Closing Price is less than $17 per share,  the Average Closing
Price shall be deemed to be $17 per share.

     (b) All per share prices or amounts  referred to in this Agreement shall be
appropriately  adjusted  to  reflect  the  effect  of any  stock  splits,  stock
dividends, or similar transactions.

     3.10 Tax and Accounting Treatment.  The parties intend that the Merger will
be treated as a reorganization within the meaning of Section 368 of the Internal
Revenue  Code of 1986,  as amended,  and a pooling of interests  for  accounting
purposes.

                                   ARTICLE IV

                     Representations and Warranties of Buyer

  4.1 Certain Definitions.

     As used in Articles IV and V, the following  terms shall have the following
meanings:

     (a) The term  "Material  Adverse  Effect"  with respect to any party hereto
means any change or changes  in, or effect or effects  on,  such party or any of
its  subsidiaries  that,  individually  or in the  aggregate  (i) is  materially
adverse to the business,  assets,  or financial  condition of such party and its
subsidiaries  taken as a whole or (ii) may materially  and adversely  affect the
ability of such party to (A) operate or conduct its  business  substantially  in
the manner in which it is currently  operated or conducted or (B)  substantially
perform its obligations  hereunder and consummate the transactions  contemplated
hereby.

     (b) The word  "subsidiary"  when used with  respect to any party  means any
corporation or other organization,  whether  incorporated or unincorporated,  of
which such  party or any other  subsidiary  of such  party is a general  partner
(excluding  partnerships the general partnership interests of which held by such
party or any  subsidiary  of such  party do not have a  majority  of the  voting
interests in such partnership) or of which at least a majority of the securities
or other  interests  having  by their  terms  ordinary  voting  power to elect a
majority of the Board of Directors or others  performing  similar functions with
respect to such  corporations or other  organizations  is directly or indirectly
owned or controlled by such party and/or by any one or more of the subsidiaries,
excluding in the case of Lawrence, LSRL and LSI.





     (c) The term  "Knowledge"  with  respect to Lawrence  shall mean the actual
knowledge of any of the persons set forth on Schedule 4.1(c) and with respect to
Buyer shall mean the actual knowledge of Buyer's CEO and CFO, in each case after
conducting reasonable inquiry.

     4.2 Buyer's and Buyer Sub's Representations and Warranties. Buyer and Buyer
Sub each  represents and warrants to Lawrence as follows and  acknowledges  that
Lawrence is relying upon such  representations and warranties in connection with
the execution, delivery, and performance of this Agreement and the completion of
the Merger,  notwithstanding  any  investigation  made by Lawrence or on its own
behalf.

     (a) Each of Buyer and Buyer Sub is a corporation  duly  organized,  validly
existing  and  in  good  standing  under  the  laws  of  its   jurisdiction   of
incorporation  and has the corporate power to carry on its business as it is now
being  conducted  or presently  proposed to be  conducted  and to own all of its
properties and assets.

     (b) Each of Buyer and Buyer Sub has the corporate  power to enter into this
Agreement and to carry out its obligations hereunder. The execution and delivery
of this Agreement by Buyer and Buyer Sub and the  consummation  by each of Buyer
and Buyer Sub of the transactions  contemplated hereby have been duly authorized
by the respective Boards of Directors of Buyer and Buyer Sub, and this Agreement
and each of the transactions  contemplated  hereby has been approved by Buyer as
the sole stockholder of Buyer Sub. No other corporate proceedings on the part of
either  Buyer or Buyer  Sub are  necessary  to  approve  this  Agreement  or the
transactions   contemplated   hereby,   other  than  the   approval  of  Buyer's
stockholders and this Agreement  constitutes the valid and binding obligation of
Buyer and Buyer Sub, enforceable against each in accordance with its terms.

     (c)  Except as set forth on  Schedule  4.2(c)  and  except  for  applicable
requirements  of state or foreign laws relating to takeovers,  federal and state
securities  or blue sky laws,  filings  with the Nasdaq Stock  Market,  Inc. and
filing of Agreement of Merger under the ABCA and the DGCL,  no filing with,  and
no permit,  authorization,  consent or approval of, any public body or authority
is  necessary  for the  consummation  by Buyer or Buyer Sub of the  transactions
contemplated by this Agreement.  Except as set forth on Schedule 4.2(c), neither
the  execution  and  delivery of this  Agreement  by Buyer or Buyer Sub, nor the
consummation by Buyer or Buyer Sub of the transactions  contemplated hereby, nor
compliance  by Buyer or Buyer Sub with any of the  provisions  hereof,  will (i)
result in any breach of the Certificate of  Incorporation  or Bylaws of Buyer or
Buyer Sub,  (ii)  result in a  violation  or breach of, or  constitute  (with or
without  due  notice  or lapse of time or both) a  default  (or give rise to any
right of termination,  cancellation or  acceleration)  under,  any of the terms,
conditions  or  provisions  of any note,  bond,  mortgage,  indenture,  license,
contract,  agreement or other  instrument or obligation to which Buyer or any of
its  subsidiaries is a party or by which any of them or any of their  properties
or assets may be bound or (iii)  violate any order,  writ,  injunction,  decree,
statute,  rule or regulation applicable to Buyer, any of its subsidiaries or any
of their properties or assets,  except in the case of clauses (ii) and (iii) for
violations, breaches or defaults that would not have a Material Adverse Effect.

     (d) Buyer  agrees  that,  for a period of at least one year  following  the
Closing Date, the benefits provided under all Employee Benefit Programs (defined
in Subsection  5.9(a) below),  with respect to participants  who are employed on
the Closing Date, will be  substantially  similar to those provided  immediately
prior to the  Closing  Date,  provided  that  substantially  similar  plans were
provided by Buyer to its employees prior to the Effective Time.

     (e) Since  November  23,  1993,  Buyer has filed  all  forms,  reports  and
documents  with the Securities and Exchange  Commission  ("SEC")  required to be
filed  by it  pursuant  to  the  federal  securities  laws  and  the  rules  and
regulations  of the SEC (the "SEC  Documents").  As of their  respective  filing
dates, the SEC Documents complied in all material respects with the requirements
of the Securities  Exchange Act of 1934 (the  "Exchange  Act") or the Securities
Act of 1933 (the "Securities Act"), and none of the SEC Documents  contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary in order to make the statements  made therein,
in light of the circumstances under which they were made, not misleading, except
to the extent corrected by a subsequently filed SEC Document.





     (f) The authorized shares of capital stock of Buyer are as set forth in its
Annual Report on Form 10-K for the fiscal year ended  December 31, 1996. All the
issued and outstanding  shares of Buyer Common Stock are and, upon  consummation
of the  transaction  contemplated by this  Agreement,  will be duly  authorized,
validly  issued,  fully paid and  nonassessable.  As of May 15, 1997,  Buyer had
8,804,820 shares of Common Stock  outstanding,  outstanding  options to purchase
1,142,806 shares of Buyer Common Stock under its option plans and 25,443 options
available for issuance under such plans,  and  outstanding  warrants to purchase
161,250 shares of Buyer Common Stock.

     (g) The audited  consolidated  balance sheets of Buyer and its subsidiaries
at December  31, 1994,  1995,  and 1996 and the  statements  of  operations  and
changes in stockholders'  equity and cash flows for the years ended December 31,
1994,  1995,  and 1996,  included in the SEC  Documents  (the  "Buyer  Financial
Statements")  fairly present the financial position and results of operations of
Buyer and its  subsidiaries  as for the  periods  then  ended and the  financial
position of Buyer and its  subsidiaries  at the dates thereof in accordance with
generally  accepted  accounting  principles.  Buyer has  maintained its books of
account in accordance with applicable  laws, rules and regulations of government
authorities  and with  generally  accepted  accounting  principles  consistently
applied,  and such books of account  are and,  during the period  covered by the
Buyer Financial Statements,  were correct and complete in all material respects,
fairly and  accurately  reflect or reflected  the income,  expenses,  assets and
liabilities of Buyer,  including the nature thereof and the transactions  giving
rise  thereto,  and  provide  or  provided  a fair and  accurate  basis  for the
preparation of the Buyer Financial Statements

     (h)  Except  as set forth in  Schedule  4.2(h),  neither  the Buyer nor any
subsidiary  has, nor at the Closing will have, any  liabilities or  obligations,
either absolute,  accrued, contingent or otherwise, which individually or in the
aggregate are material to the  financial  condition and business of the Buyer or
any  subsidiary  and which (i) have not been  reflected  in the Buyer  Financial
Statements,  (ii) have not been  described  in this  Agreement  or in any of the
Schedules  hereto,  or (iii) have been incurred since  December 31, 1996,  other
than in the ordinary course of its business consistent with past practices.

     (i)  None of the  information  supplied  or to be  supplied  by  Buyer  for
inclusion or incorporation by reference in (i) any registration  statement filed
in connection with this Agreement will, at the time such registration  statement
is filed with the SEC and at the time it becomes  effective under the Securities
Act,  contain  any  untrue  statement  of a  material  fact or omit to state any
material fact required to be stated  therein or necessary to make the statements
therein, in light of the circumstances under which they are made, not misleading
and (ii) any proxy statement will, at the date mailed to stockholders and at the
times of the meetings of Buyer's  stockholders to be held in connection with the
Merger,  contain any untrue  statement  of a material  fact or omit to state any
material  fact  required to be stated  therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading.  Any proxy statement will comply as to form in all material respects
with  the  provisions  of  the  Exchange  Act  and  the  rules  and  regulations
thereunder,  and  any  registration  statement  will  comply  as to  form in all
material  respects with the  provisions of the  Securities Act and the rules and
regulations  thereunder,  except  that no  representation  is made by Buyer with
respect to statements made therein based

     on information supplied by Lawrence or any Shareholder for inclusion in any
registration statement or proxy statement.

     (j)  Neither  this  Agreement  nor any  certificate  or  Schedule  or other
information  furnished  by or on  behalf  of Buyer  pursuant  to this  Agreement
contains any untrue  statement of a material  fact or, when this  Agreement  and
such certificates,  Schedules and other information are taken in their entirety,
omits to state a material fact necessary to make the statements contained herein
or therein not misleading.

     (k)  Holdings  was  formed  solely  for  the  purpose  of  engaging  in the
transactions contemplated by the ADCS Merger Agreement and this Agreement. As of
the date hereof and the Effective  Time,  except for  obligations or liabilities
incurred  in  connection  with  its   incorporation   or  organization  and  the
transactions  contemplated  by the ADCS  Merger  Agreement  and this  Agreement,
Holdings does not have and will not have incurred any obligations or liabilities
or engaged in any business  activities of any type or kind whatsoever or entered
into any agreements or arrangements with any person.




                                    ARTICLE V

                   Representations and Warranties of Lawrence

     Lawrence  represents  and  warrants  to Buyer and Buyer Sub as follows  and
acknowledges  and  confirms  that  Buyer  and Buyer  Sub are  relying  upon such
representations  and warranties in connection  with the execution,  delivery and
performance of this Agreement and the completion of the Merger,  notwithstanding
any investigation made by Buyer or Buyer Sub or on their behalf:

     5.1  Organization;  Permits.  Lawrence  is a  corporation  duly  organized,
validly  existing and in good  standing  under the laws of its  jurisdiction  of
incorporation  and has the corporate power to carry on its business as it is now
being  conducted and to own all of its properties and assets.  True and complete
copies  of the  Articles  of  Incorporation  and  Bylaws  of  Lawrence  with all
amendments and  restatements  thereto through the date hereof have been provided
to Buyer  prior to the date  hereof.  Lawrence  is duly  qualified  as a foreign
corporation to do business,  and is in good standing in each jurisdiction  where
the character of its  properties  owned or held under lease or the nature of its
activities makes such qualification necessary, except where the failure to be so
qualified  will not have a Material  Adverse  Effect.  Lawrence has all business
licenses,  permits and approvals  necessary to conduct its business as presently
conducted,  except  where the failure to have such  permit or approval  does not
have a Material Adverse Effect.  Lawrence  conducts its business under the trade
names and other assumed names set forth on Schedule 5.1.

     5.2  Capitalization;  Shareholders.  As of the date hereof,  the authorized
capital  stock of  Lawrence,  the number and class of Lawrence  Shares which are
issued and outstanding, and all persons having record or beneficial ownership of
shares of the capital stock of Lawrence or having any right to purchase, acquire
or obtain any of the capital stock of Lawrence are as set forth on Schedule 5.2.
Schedule  5.2 also sets forth the  foregoing  information  on a pro forma  basis
taking  into  account the merger of  Lawrence  and LSLMS.  All of the issued and
outstanding Lawrence Shares are validly issued, fully paid and nonassessable and
not subject to any lien,  charge or  encumbrance,  and were issued in compliance
with applicable federal and state securities laws. Lawrence is not, and prior to
the  Effective  Time will not become,  a party to or subject to any  contract or
obligation  wherein  any person has a right or option to purchase or acquire any
rights in any additional capital stock or other equity securities of Lawrence or
any of its  subsidiaries,  including any stock option plan,  stock  appreciation
rights plan,  restricted  stock plan or stock purchase  plan.  Lawrence does not
hold or own, directly or indirectly, any capital stock of any other corporation,
or have any direct or indirect equity or ownership  interest in any association,
partnership, joint venture or other entity. To Lawrence's Knowledge, no officer,
director,  or Shareholder of Lawrence would be unable to give the representation
that none of the events or  circumstances  described in Rule 262 of Regulation A
under the Securities Act have occurred.

     5.3 Authority Relative to this Agreement.  Lawrence has the corporate power
to enter into this  Agreement and to carry out its  obligations  hereunder.  The
execution  and delivery of this  Agreement by Lawrence and the  consummation  by
Lawrence of the  transactions  contemplated  hereby have been duly authorized by
the Board of Directors of Lawrence,  and no other  corporate  proceedings on the
part of Lawrence are  necessary to approve  this  Agreement or the  transactions
contemplated  hereby.  This Agreement  constitutes the legal,  valid and binding
obligation  of  Lawrence,   enforceable   against  it  in  accordance  with  the
Agreement's terms.

     5.4 Consents and Approvals; No Violations.  Except as set forth on Schedule
5.4 and except for applicable  requirements of state or foreign laws relating to
takeovers,  state securities or blue sky laws, and filing of Agreement of Merger
under  the ABCA and the DGCL,  no filing  with,  and no  permit,  authorization,
consent or  approval  of, any public  body or  authority  is  necessary  for the
consummation  by Lawrence of the  transactions  contemplated  by this Agreement.
Except as set forth on Schedule 5.4,  neither the execution and delivery of this
Agreement  by Lawrence,  nor the  consummation  by Lawrence of the  transactions
contemplated  hereby,  nor  compliance  by Lawrence  with any of the  provisions
hereof, will (i) result in any breach of the Articles of Incorporation or Bylaws
of  Lawrence,  (ii) result in a violation or breach of, or  constitute  (with or
without  due  notice  or lapse of time or both) a  default  (or give rise to any
right of termination, cancellation or acceleration)





     under,  any of the  terms,  conditions  or  provisions  of any note,  bond,
mortgage,  indenture,  license,  contract,  agreement  or  other  instrument  or
obligation to which  Lawrence is a party or by which it or any of its properties
or assets may be bound or (iii)  violate any order,  writ,  injunction,  decree,
statute,  rule,  regulation  or  permit  applicable  to  Lawrence  or any of its
properties  or  assets,  except  in the  case of  clauses  (ii)  and  (iii)  for
violations, breaches or defaults that would not have a Material Adverse Effect.

     5.5  Financial  Statements.  Lawrence  has  furnished  to Buyer  Lawrence's
audited  combined  financial  statements  (combined  balance  sheets,   combined
statements of income,  combined statements of shareholders'  equity and combined
statements  of cash  flows) at and for each of the  twelve-month  periods  ended
December 31, 1993,  December 31, 1994, December 31, 1995, and December 31, 1996,
and the  three-month  period ended March 31, 1997, all restated so as to exclude
LSRL and LSI (collectively, the "Lawrence Financial Statements").  Except as set
forth on Schedule 5.5, each of the balance sheets  (including the related notes)
included in the Lawrence  Financial  Statements  fairly presents in all material
respects the financial  position of Lawrence as of the respective dates thereof,
and the other related statements  (including the related notes) included therein
fairly present in all material respects the results of operations and cash flows
of Lawrence for the respective  periods or as of the respective  dates set forth
therein,  all  in  conformity  with  generally  accepted  accounting  principles
consistently  applied  during the periods  involved,  except as otherwise  noted
therein and subject, in the case of the interim financial statements,  to normal
year-end adjustments and any other adjustments described therein and the absence
of any notes thereto.

     5.6 Absence of Certain  Changes or Events.  Other than as  permitted  under
Section 6.1 and except as set forth on Schedule 5.6, since December 31, 1996 and
through the date hereof, Lawrence has not suffered a Material Adverse Effect and
Lawrence  has not (i)  declared  any  dividend  or made  any  payment  or  other
distribution  in respect of any shares of its capital  stock,  (ii)  acquired or
disposed of any shares of its capital stock or granted any options,  warrants or
other rights to acquire or convert any obligation into any shares of its capital
stock, (iii) entered into any material  transaction with any officer,  director,
employee or any known relative thereof or any entity in which such person has an
interest,  except the payment of rent, salaries, wages and expense reimbursement
in the ordinary  course of business,  (iv)  incurred any material  obligation or
liability (contingent or otherwise),  except for (A) this Agreement,  (B) normal
trade  and  other  obligations  incurred  in the  ordinary  course  of  business
consistent with past practice and (C) obligations  under  contracts,  agreements
and leases  incurred in the  ordinary  course of business  consistent  with past
practice,  the performance of which has not and will not, individually or in the
aggregate,  have a  Material  Adverse  Effect on  Lawrence,  (v)  discharged  or
satisfied any material lien or other encumbrance or paid any material obligation
or liability (fixed or contingent), except in the ordinary course of business or
as contemplated by this Agreement,  (vi) mortgaged,  pledged or subjected to any
lien or other  encumbrance  any of its  material  assets  (whether  tangible  or
intangible),  (vii) sold, assigned,  transferred,  conveyed, leased or otherwise
disposed of or agreed to sell, lease or otherwise dispose of any of its material
assets except for sales of inventory or other assets for fair  consideration  in
the ordinary course of business or as  contemplated  by this  Agreement,  (viii)
canceled or  compromised  any  material  debt or claim,  except in the  ordinary
course of  business,  (ix) waived or released any  material  rights,  except for
waivers or releases made in the ordinary course of business consistent with past
practice,  (x) made any  single  capital  expenditure  in excess of One  Hundred
Thousand Dollars ($100,000),  or entered into any commitment  therefor,  or (xi)
suffered  any  material  casualty  loss or  damage,  whether  or not  covered by
insurance, or any adverse ruling, judgment or award, whether or not amounts were
reserved on  Lawrence's  books,  which would have a Material  Adverse  Effect on
Lawrence.

     5.7 Litigation. Except as set forth on Schedule 5.7, as of the date of this
Agreement, (a) there is no action, suit, judicial or administrative  proceeding,
arbitration or  investigation  pending or, to Lawrence's  Knowledge,  threatened
against or involving  Lawrence,  or any of its properties or rights,  before any
court,  arbitrator,  or  administrative  or  governmental  body; (b) there is no
judgment,  decree,  injunction,   rule  or  order  of  any  court,  governmental
department,   commission,  agency,  instrumentality  or  arbitrator  outstanding
against  Lawrence;  and (c)  Lawrence  is not in  violation  of any  term of any
judgments,  decrees,  injunctions or orders  outstanding  against it. An action,
suit, proceeding,  arbitration or investigation shall be considered "threatened"
for purposes of this





     Article  V if  Lawrence  has  received  written  notice  or  otherwise  has
Knowledge that such event may be commenced. Except as set forth on Schedule 5.7,
to  Lawrence's  Knowledge  there  are no  existing  facts  or  conditions  which
reasonably  would be  expected to give rise to any  charge,  claim,  litigation,
proceeding, or investigation.

  5.8 Contracts.

     (a) Set forth on Schedule  5.8(a) is a list of all contracts,  instruments,
mortgages,  notes, security agreements,  leases, agreements or understandings to
which  Lawrence is a party and which are material to the business of Lawrence or
which exceed  $50,000.  Each of the contracts,  instruments,  mortgages,  notes,
security agreements, leases, agreements or understandings to which Lawrence is a
party that  relates to or affects  the assets or  operations  of  Lawrence or to
which  Lawrence or its assets or  operations  may be bound or subject is a valid
and binding  obligation of Lawrence and, to Lawrence's  Knowledge,  of the other
parties thereto and is in full force and effect, except for where the failure to
be in full force and effect would not  individually  or in the aggregate  have a
Material  Adverse  Effect.  Except to the extent  that the  consummation  of the
transactions  contemplated  by this  Agreement  may require the consent of third
parties as  identified  on  Schedule  5.4,  there are no  existing  defaults  by
Lawrence  thereunder  or, to the  Knowledge  of  Lawrence,  by any  other  party
thereto, which defaults, individually or in the aggregate, would have a Material
Adverse Effect; and no event of default has occurred, and no event, condition or
occurrence  exists,  that (whether with or without notice,  lapse of time or the
happening  or  occurrence  of any other  event)  would  constitute  a default by
Lawrence thereunder which default would,  individually or in the aggregate, have
a Material Adverse Effect.

     (b)  Except  as set  forth  on  Schedule  5.8(b),  as of the  date  of this
Agreement,  Lawrence  is not a party  to any  oral  or  written  (i)  consulting
agreement not terminable on sixty (60) days or less notice involving the payment
of more than Fifty  Thousand  Dollars  ($50,000)  per annum,  (ii) joint venture
agreement,  (iii)  noncompetition or similar  agreement that restricts  Lawrence
from engaging in a line of business,  (iv) agreement with any executive  officer
or other employee of Lawrence the benefits of which are contingent, or the terms
of which are materially altered,  upon the occurrence of a transaction involving
Lawrence of the nature contemplated by this Agreement and which provides for the
payment of in excess of Fifty  Thousand  Dollars  ($50,000),  (v) agreement with
respect to any  executive  officer of Lawrence or any  subsidiary  providing any
term of employment or compensation  guaranty in excess of Fifty Thousand Dollars
($50,000) per annum,  (vi)  agreement or plan,  including any stock option plan,
stock  appreciation  rights plan,  restricted stock plan or stock purchase plan,
any of the benefits of which will be  increased,  or the vesting of the benefits
of which  will be  accelerated,  by the  occurrence  of any of the  transactions
contemplated by this Agreement or the value of any of the benefits of which will
be  calculated  on the  basis of any of the  transactions  contemplated  by this
Agreement,  (vii) (A) any  agreement  providing for  disposition  of any line of
business,  material  assets or  securities of Lawrence,  (B) any agreement  with
respect  to  the  acquisition  of any  line  of  business,  material  assets  or
securities  of  any  other   business,   or  (C)  any  agreement  of  merger  or
consolidation  or letter of intent with respect to the foregoing,  or (viii) any
agreement to indemnify any other party with respect to an adverse  environmental
condition.

  5.9 Employee Benefit Plans.

     (a) Schedule 5.9(a) lists each "employee  benefit plan" (within the meaning
of section  3(3) of the Employee  Retirement  Income  Security  Act of 1974,  as
amended  ("ERISA"))  that is maintained or otherwise  contributed to by Lawrence
for the benefit of its employees (including, without limitation, pension, profit
sharing,  stock bonus,  medical  reimbursement,  life insurance,  disability and
severance  pay plans)  (collectively,  "Company  Plans") and all other  employee
benefit  plans  providing for deferred  compensation,  bonuses,  stock  options,
employee insurance coverage or any similar  compensation or welfare benefit plan
(collectively,   "Benefit   Arrangements"  and,  together  with  Company  Plans,
collectively referred to as "Employee Benefit Programs").

     (b) With respect to each of the Company Plans,  Lawrence has made available
to Buyer a current,  accurate and complete  copy (or, to the extent no such copy
exists, an accurate description) thereof (including all existing




     amendments thereto that shall become effective at a later date) and, to the
extent  applicable,  (i) any related trust agreement,  annuity contract or other
funding instrument; and (ii) any summary plan description.

     (c) (i) Each of the  Employee  Benefit  Programs has been  established  and
administered in compliance with any applicable provisions of ERISA, the Internal
Revenue Code of 1986,  as amended (the  "Code"),  and the terms of all documents
relating  to such  programs;  (ii)  each  Company  Plan that is  intended  to be
qualified  within  the  meaning  of  section  401(a) of the Code has  received a
favorable determination letter as to its qualification;  (iii) as of the date of
this Agreement,  no "reportable  event" (as such term is used in section 4043 of
ERISA)  other than an event of a type as to which the Pension  Benefit  Guaranty
Corporation has waived the reporting requirements,  "prohibited transaction" (as
such  term is used in  section  4975 of the Code or  section  406 of  ERISA)  or
"accumulated funding deficiency" (as such term is used in section 412 or 4971 of
the Code) has  heretofore  occurred with respect to any Company  Plan;  and (iv)
there are no pending or, to Lawrence's Knowledge, threatened, actions, claims or
lawsuits  which have been  asserted or instituted  against the Employee  Benefit
Programs,  the assets of any of the trusts  under such plans or the plan sponsor
or the plan  administrator,  or against any  fiduciary of the  Employee  Benefit
Programs with respect to the operation of such plans (other than routine benefit
claims).

     (d) Lawrence does not maintain or contribute  to any  "multiemployer  plan"
(as such term is  defined in section  3(37) of ERISA) and has not  incurred  any
material liability that remains unsatisfied with respect to any such plans.

     (e) No  Employee  Benefit  Program  (other  than one  which is an  employee
pension  benefit plan within the meaning of Section  3(2)(A) of ERISA)  provides
benefits  (including,  without  limitation,  death,  health or medical benefits,
whether or not insured) with respect to current or former  employees of Lawrence
beyond their  retirement or other  termination of service with  Lawrence,  other
than (a) coverage mandated by applicable law, (b) deferred compensation benefits
which have been accrued as  liabilities  on the books of Lawrence,  (c) benefits
the full cost of which is borne by the  current  or former  employees  (or their
beneficiaries), or (d) benefits which have already been satisfied in full.

  5.10 Regulatory Authority Matters.

     (a) Except as set forth in Schedule 5.10(a),  Lawrence is, and the products
sold by Lawrence are, in compliance in all material respects with all applicable
statutes, rules, regulations, standards, guides or orders administered or issued
by any federal,  state or local agency or  governmental  body having  regulatory
authority over such products (the "Regulatory Agencies").

     (b) Except as set forth in Schedule 5.10(b), Lawrence has not received from
the  Regulatory  Agencies,  and has no Knowledge of any facts that would furnish
any reasonable basis for, any notice of adverse  findings,  regulatory  letters,
warning letters or other similar  communications  from the Regulatory  Agencies,
and there  have been no  seizures  conducted  or  threatened  by the  Regulatory
Agencies, and no recalls, field notifications or alerts conducted,  requested or
threatened by the Regulatory  Agencies relating to the products sold by Lawrence
or any of its subsidiaries.

     (c) Except as set forth on Schedule  5.10(c),  Lawrence is not aware of any
facts which are reasonably likely to cause (i) the denial, withdrawal, recall or
suspension of any products sold or intended to be sold by Lawrence or any of its
subsidiaries,  or (ii) a change in the marketing  classification  or labeling of
any such products, or (iii) a termination or suspension of marketing of any such
products.

     (d)  Except  as set  forth  on  Schedule  5.10(d),  none  of  the  products
manufactured,  marketed  or sold by Lawrence  has been  recalled or subject to a
field  notification  (whether  voluntarily or  otherwise),  and Lawrence has not
received notice (whether completed or pending) of any proceeding seeking recall,
suspension or seizure of any products sold or proposed to be sold by Lawrence or
any of its subsidiaries.





  5.11 Intellectual Property.

     (a) Schedule  5.11(a)  contains an accurate  and  complete  list of (i) all
patents,  applications  for  patents,  registrations  of  trademarks  (including
service  marks) and  applications  therefor,  registrations  of  copyrights  and
applications  therefor  that  are  owned  by  Lawrence  and that are part of the
business  of  Lawrence  as  presently  conducted;  (ii) all  other  intellectual
property  rights that are owned by Lawrence and that are material to the conduct
of business as presently  conducted;  (iii) all unexpired  licenses  relating to
such of Lawrence's  intellectual property rights that have been granted to or by
Lawrence  and that are  material to the  conduct of the  business of Lawrence as
presently  conducted,  but  excluding  end-user  licenses  granted  to  Lawrence
relating  to  standard   "off-the-shelf"  personal  computer  software  that  is
generally  available  on  commercially  reasonable  terms from  vendors that are
unaffiliated with Lawrence,  including software made available from such vendors
on a "shrink wrap license" basis ("Non-Scheduled  Licenses"); and (iv) all other
agreements  relating to  intellectual  property  rights that are material to the
conduct of the business of Lawrence as presently  conducted,  but  excluding the
Non-Scheduled  Licenses  (collectively,   items  (i)-(iv)  are  referred  to  as
"Lawrence Intellectual Property Rights").

     (b) Lawrence owns and has the right to use, and license  others to use, all
Lawrence  Intellectual  Property  Rights that are material to the conduct of the
business of Lawrence as presently  conducted,  and such  ownership  and right to
use, and license of others to use, are free and clear of, and without  liability
under,  all liens and security  interests of third  parties.  Such ownership and
right to use,  and license of others to use,  are free and clear of, and without
liability  under,  all claims and rights of third parties that, if determined to
be legally protectable, could have a Material Adverse Effect.

     (c)  Lawrence  has taken  reasonable  steps  sufficient  to  safeguard  and
maintain the secrecy and  confidentiality of, and its proprietary rights in, the
unpatented know-how,  technology,  proprietary  processes,  formulae,  and other
information  that is  material  to the  conduct of the  business  of Lawrence as
presently conducted. Without limiting the generality of the foregoing,  Lawrence
has obtained  confidentiality and inventions  assignment  agreements from all of
Lawrence's past and present  employees and independent  contractors  involved in
the creation or development of Lawrence  Intellectual Property Rights including,
without  limitation,  from all  employees  and  contractors  who are  inventors,
authors,  creators or developers of Lawrence  Intellectual  Property Rights that
are  material to the conduct of the business as  presently  conducted.  Schedule
5.11(c) lists all  nondisclosure  agreements to which  Lawrence is a party or by
which it is bound.

     (d) Except as set forth on Schedule  5.11(d) and except for  payments  made
with  respect  to  patents  and  patent  applications,  there are no  royalties,
honoraria, fees or other payments payable by Lawrence to any person by reason of
the ownership,  use, license,  sale or disposition of any Lawrence  Intellectual
Property Right.

     (e) Except as set forth on  Schedule  5.11(e),  Lawrence  has not  received
notice that Lawrence is infringing in the conduct of the business upon the right
or claimed  right of any other party with respect to any  Lawrence  Intellectual
Property Rights,  nor does Lawrence have any Knowledge of any alleged or claimed
infringement  by any  product  or  process  manufactured,  used,  sold or  under
development  by or for  Lawrence in the  conduct of the  business of Lawrence as
presently conducted.

     (f) For purposes of this Section 5.11,  "use" with respect to  intellectual
property  rights  includes  make,  reproduce,  display or perform  (publicly  or
otherwise),  prepare derivative works based on, sell,  distribute,  disclose and
otherwise exploit such intellectual  property rights and products  incorporating
or subject to such  intellectual  property rights.  No reference in this Section
5.11 to Lawrence's right to use the Lawrence  Intellectual Property Rights shall
be  construed  as a  representation  or warranty as to the validity of an issued
patent included in the Lawrence Intellectual Property Rights.

     (g) To Lawrence's Knowledge,  the Lawrence Intellectual Property Rights are
free of any unresolved  ownership  disputes with respect to any third party, and
there is no unauthorized use,  infringement or  misappropriation  of any of such
Lawrence Intellectual Property Rights by any third party, including any employee
or former employee of Lawrence.




  5.12 Owned Property; Lawrence Facilities.

     (a) Schedule  5.12(a)  sets forth,  by address,  owner and usage,  all real
property owned by Lawrence.

     (b) Schedule 5.12(b) sets forth, by address,  owner and usage, all material
real property agreements  (including any amendments thereto) (the "Real Property
Leases") pursuant to which Lawrence leases,  subleases or otherwise  occupies or
leased,  sublet or otherwise occupied during the past five (5) years any plants,
offices,  manufacturing  facilities,  warehouses,  improvements,  administration
buildings and all other real property (the "Lawrence Facilities").  There are no
defaults or events which,  with the passage of time,  would constitute a default
under the Real Property  Leases,  except in either  instance for defaults  which
individually  or in the aggregate  would not have a Material  Adverse  Effect on
Lawrence.

     (c) Lawrence  owns,  leases or has the right to use all material  fixtures,
furniture,  improvements,  machinery  or  equipment  necessary  to  conduct  its
business as currently conducted (the "Equipment Leases").  There are no defaults
or events which,  with the passage of time, would constitute a default under the
Equipment Leases,  except in either instance for defaults which  individually or
in the aggregate would not have a Material Adverse Effect on Lawrence.

  5.13 Compliance With Legislation Regulating Environmental Quality.

     (a) For the purposes of this Agreement, the term "Environmental Laws" shall
mean  all  federal,   foreign,   state  and  local   environmental   protection,
occupational,  health  and  safety or similar  laws,  ordinances,  restrictions,
licenses, rules, regulations and permit conditions, including but not limited to
the Federal Water Pollution Control Act,  Resource  Conservation & Recovery Act,
Safe  Drinking  Water  Act,  Toxic  Substances   Control  Act,  Clean  Air  Act,
Comprehensive Environmental Response,  Compensation and Liability Act, Emergency
Planning and Community Right to Know or other United States or foreign, federal,
state,  province,  or local  laws of similar  effect,  each as amended as of the
Effective Time, and the term "Hazardous  Materials"  shall mean any hazardous or
toxic substances, wastes or materials, including without limitation petroleum or
petroleum products, defined as such or regulated by any applicable Environmental
Law or governmental agencies.

     (b) Except as set forth on Schedule 5.13(b),  (i) Lawrence has not received
any written notices, directives, violation reports, actions or claims from or by
(A)  any  local,  state,  federal  or  foreign  governmental  agency  concerning
Environmental Laws or (B) any person alleging that, in connection with Hazardous
Materials,  conditions at any of the Lawrence  Facilities or Lawrence's  acts or
omissions  have resulted in or caused or threatened to result in or cause injury
or death to any person or damage to any property,  including without limitation,
damage to natural  resources  and, to  Lawrence's  Knowledge,  no such  notices,
directives,  violation reports,  actions,  claims or allegations exist; (ii) the
Lawrence Facilities and the business operated by Lawrence are in compliance with
all applicable  state,  federal,  foreign and local  Environmental  Laws, except
where any  noncompliance  with  Environmental  Laws  would  not have a  Material
Adverse  Effect  on  Lawrence;  (iii) no  underground  storage  tanks  have been
installed by Lawrence and to Lawrence's  Knowledge  none either are or have been
located at any of the Lawrence Facilities;  and (iv) to Lawrence's Knowledge, no
friable asbestos or PCBs have been located at any of the Lawrence Facilities.

     (c) Except as set forth on Schedule  5.13(c),  (i) there has been no spill,
discharge, release, cleanup of or contamination by any Hazardous Materials used,
generated,  treated,  stored,  disposed  of or  handled  by  Lawrence;  and (ii)
Lawrence  holds all  necessary  permits,  licenses,  approvals  and  consents to
conduct its business as currently being conducted and is not in violation of any
condition of any such permit, license or consent.

     5.14  Violations;  Condemnation.  Except  as set  forth on  Schedule  5.14,
Lawrence has not received, with respect to any Lawrence Facility, any written or
oral  notice of default  or any  written or oral  notice of  noncompliance  with
respect to applicable  state,  federal or local laws or regulations  relating to
zoning, building, fire, use restriction or safety or health codes which have not
been remedied in all respects, and noncompliance





     with which could have a Material  Adverse Effect.  Lawrence has received no
written  or oral  notice of any  pending  or  threatened  condemnation  or other
governmental taking of any of the Lawrence Facilities.

  5.15 Taxes.

     (a) Except as set forth on Schedule  5.15(a),  (i) all Returns  (defined in
Subsection  5.15(b)  below) in respect of Taxes  (defined in Subsection  5.15(b)
below) required to be filed with respect to Lawrence (including any consolidated
federal income tax return and any state Tax return that includes Lawrence or any
of its related companies on a consolidated, combined or unitary basis) have been
timely  filed,  none of such  Returns  contains,  or is required  to contain,  a
disclosure  statement  under  section  6661 or 6662 of the  Code or any  similar
provision of state,  local or foreign law, and no extension of time within which
to file any such  Return  has been  requested,  which  Return has not since been
timely  filed;  (ii) all Taxes  whether or not shown on such  Returns  have been
timely paid and all payments of estimated Taxes required to be made with respect
to Lawrence under section 6655 of the Code or any comparable provision of state,
local or foreign law have been made;  (iii) all such  Returns are true,  correct
and complete in all material  respects;  (iv) no  adjustment  relating to any of
such Returns has been proposed formally or informally by any Tax authority;  (v)
there are no outstanding  subpoenas or requests for information  with respect to
any Returns of Lawrence or the Taxes  reflected on such Returns;  (vi) there are
no pending or to Lawrence's  Knowledge threatened actions or proceedings for the
assessment or collection of Taxes against  Lawrence or any corporation  that was
included in the filing of a Return with Lawrence on a consolidated,  combined or
unitary basis;  (vii) no consent under section 341(f) of the Code has been filed
with  respect  to  Lawrence;  (viii)  there  are no Tax  liens on any  assets of
Lawrence  except  liens for Taxes not yet due and payable or being  contested in
good faith by  appropriate  proceedings  for which  adequate  reserves have been
established;  (ix) no acceleration of the vesting schedule for any property that
is nonvested within the meaning of the regulations  under section 83 of the Code
will occur in connection with the  transactions  contemplated by this Agreement;
(x) Lawrence is not now nor has it at any time been  subject to any  accumulated
earnings tax or personal  holding  company tax;  (xi)  Lawrence  owes no amounts
pursuant to any written or unwritten Tax sharing  agreement or  arrangement  and
will not have any  liability  after the date hereof in respect of any written or
unwritten Tax sharing  agreement or  arrangement  executed or agreed to prior to
the date hereof; (xii) all Taxes required to be withheld, collected or deposited
by Lawrence have been timely withheld, collected or deposited and, to the extent
required, have been paid to the relevant Tax authority; (xiii) any adjustment of
Taxes of Lawrence  made by the IRS that is required to be reported to any state,
local or foreign Tax authority has been so reported and any  additional  Tax due
as a result  thereof  has been  paid in full;  (xiv)  there  are no  outstanding
waivers or agreements  extending the statute of limitations  for any period with
respect  to any  Tax to  which  Lawrence  may be  subject;  (xv)  to  Lawrence's
Knowledge there are no requests for rulings or information currently outstanding
that could affect the Taxes of  Lawrence,  or any similar  matters  pending with
respect to any Tax authority;  (xvi) no Tax authority has proposed reassessments
of any property  owned or leased by Lawrence  that could  increase the amount of
any Tax to which Lawrence would be subject;  (xvii) no power of attorney that is
currently in force has been granted with respect to any matter relating to Taxes
that could affect Lawrence and (xviii) with respect to each Return that has been
examined by the relevant Tax  authority,  such  examination  is closed and final
without any adjustment  having been made to such Return  (including  adjustments
not affecting the amount of Tax due with respect to such Return).

     (b) For purposes of this Agreement, "Tax" or "Taxes" shall mean any and all
taxes, charges, fees, levies, and other governmental assessments and impositions
of any kind, payable to any federal, state, local or foreign governmental entity
or taxing  authority  or agency,  including,  without  limitation,  (i)  income,
franchise,  profits, gross receipts, minimum, alternative minimum, estimated, ad
valorem,  value added, sales, use, service,  real or personal property,  capital
stock, license, payroll, withholding,  disability,  employment, social security,
workers compensation, unemployment compensation, utility, severance, production,
excise, stamp, occupation, premiums, windfall profits, transfer and gains taxes,
(ii) customs duties,  imposts,  charges,  levies or other similar assessments of
any kind,  and (iii)  interest,  penalties  and  additions  to tax imposed  with
respect  thereto;  and "Returns"  shall mean any and all returns,  reports,  and
information  statements  with  respect  to Taxes  required  to be filed with the
Internal  Revenue Service or any other  governmental  entity or Tax authority or
agency, whether domestic or




     foreign including, without limitation,  consolidated,  combined and unitary
tax returns. For the purposes of this Section 5.15, references to Lawrence shall
include former  subsidiaries of Lawrence identified on Schedule 5.15(b), if any,
for the periods  during  which any such  corporations  were  owned,  directly or
indirectly, by Lawrence.

     5.16 Product Liability Matters. Except as set forth on Schedule 5.16, as of
the date of this Agreement,  Lawrence has not submitted to its product liability
insurance  carriers any claims with respect to  potential  product  liability of
Lawrence which claims could have a Material Adverse Effect on Lawrence, nor does
it know of any such  claims  which  should  have been  submitted  to its product
liability insurance  carriers.  Buyer has previously been afforded access to all
files  containing,  or been  furnished  with copies of, all  pleadings,  claims,
complaints  and relevant  documents in connection  with the  foregoing.  Neither
Lawrence nor, to Lawrence's  Knowledge,  any employee or agent of Lawrence,  has
made any untrue statement of a material fact or omitted to state a material fact
in connection with obtaining or renewing any insurance policy providing  product
liability coverage in respect of the products of Lawrence which could reasonably
result in the loss of any material  portion of such  coverage,  and Lawrence has
not received any written or oral notice from any insurance  company stating that
any  insurance  policy of Lawrence may not provide  coverage up to the limits of
such policy for any liability,  loss or damage which may be incurred or suffered
by Lawrence in connection with product  liability claims other than the possible
lack of coverage for punitive damages and claims for deductible amounts.

     5.17 No Undisclosed  Liabilities.  Except as set forth on Schedule 5.17 and
except  to  the  extent  specifically  reflected  or  reserved  against  in  the
Consolidated  Balance  Sheet of Lawrence as of December 31, 1996,  Lawrence does
not  have  any  material  liabilities  or  obligations  of any  nature,  whether
absolute, accrued, contingent or otherwise.

     5.18 Construction of Certain  Provisions.  It is understood and agreed that
any dollar amount specified in the foregoing  representations  and warranties or
the inclusion of any specific  items on the Schedules  hereto is not intended to
imply  that  higher  or lower  amounts,  or that the  items  that  have  been so
included,  are or are not material,  and neither party shall use the fact of the
setting of such  amounts or the fact of the  inclusion  of any such items on the
Schedules  hereto in any dispute or  controversy  between the parties on whether
any  obligation,  item or matter not described  herein or included on a Schedule
hereto is or is not material for purposes of this Agreement.

     5.19  Condition  of the Assets.  The assets of  Lawrence,  including  real,
personal  and  mixed,  tangible  and  intangible,  necessary  or  useful  to the
operation of its  business  (the  "Assets")  are in good  condition  and repair,
ordinary wear and tear excepted,  and suitable for the uses intended. The Assets
comply with and are operated in conformity with all applicable laws, ordinances,
regulations,  orders, permits and other requirements relating thereto adopted or
currently in effect.  The leases and other agreements or instruments under which
Lawrence holds, leases, subleases or is entitled to the use of any of the Assets
are in full force and  effect,  and all  rentals,  royalties  or other  payments
payable thereunder have been duly paid or provided for by adequate reserves.  No
default or event of default by Lawrence exists,  and no event which, with notice
or lapse of time or both, would  constitute a default by Lawrence,  has occurred
and is continuing, under the terms or provisions of any such lease, agreement or
other  instrument or under the terms or provisions of any agreement to which any
of such Assets is subject, nor has Lawrence received notice of any claim of such
default.

     5.20 Title; Absence of Liens and Encumbrances,  Etc. Except as set forth on
Schedule  5.20 and except for the  restrictions  imposed  under the terms of its
capital and operating leases,  Lawrence has good, valid, and marketable title to
the Assets, free and clear of all mortgages,  security interests,  claims, liens
(except inchoate  construction  liens),  charges,  title defects,  encumbrances,
restrictions on use or transfer or other defects.

     5.21 Indebtedness.  Except as set forth on Schedule 5.21, Lawrence does not
have any  obligation for money borrowed or under any guarantee nor any agreement
or  arrangement to borrow money or to enter into any such  guarantee,  and as of
the Closing Date, except as set forth on Schedule 5.21, Lawrence will not have





     any  obligation  for money  borrowed nor any  agreement or  arrangement  to
borrow  money,  and Lawrence  will not have any  guarantee  outstanding  nor any
agreement or commitment to enter into any such guarantee.

     5.22 Accounts Receivable.  No amount included in the accounts receivable of
Lawrence in the Lawrence  Financial  Statements  has been released for an amount
less  than  the  value at which it was  included  or is or will be  regarded  as
unrecoverable  in whole or in part except to the extent there shall have been an
appropriate bad debt reserve  therefor.  Such receivables are not, to Lawrence's
Knowledge,  subject to any counterclaim,  refusal to pay or setoff not reflected
in the reserves set forth on the Lawrence  Financial  Statements.  Schedule 5.22
hereto sets forth a list of all accounts  receivable of Lawrence as of the close
of business on December 31, 1996, none of which are owing from a debtor that, to
Lawrence's  Knowledge,  has become bankrupt or insolvent or have been pledged to
any third party.

     5.23 No Sales or  Conveyance  Tax Due. No sales,  use or other  transfer or
conveyance  taxes  are or will  become  payable  by any of the  parties  to this
Agreement as a consequence  of the  execution,  delivery or  performance of this
Agreement or any of the  ancillary  agreements,  other than taxes based upon the
net income of the parties.

     5.24 Books and  Records.  Lawrence has  maintained  its books of account in
accordance  with  applicable  laws,  rules and  regulations  and with  generally
accepted accounting  principles  consistently applied, and such books of account
are and, during the period covered by the Lawrence  Financial  Statements,  were
correct and complete in all material respects,  fairly and accurately reflect or
reflected the income,  expenses,  assets and liabilities of Lawrence,  including
the nature  thereof and the  transactions  giving rise  thereto,  and provide or
provided a fair and accurate basis for the preparation of the Lawrence Financial
Statements.  The minute books of Lawrence, as previously made available to Buyer
and its counsel, contain accurate records of all meetings and accurately reflect
all other  corporate  action of the  Shareholder  and directors (and  committees
thereof) of Lawrence.

     5.25  Employees.  Schedule 5.25 sets forth a list of the names,  employment
status,  location of employment,  and rates of compensation (including salaries,
wages,  commissions  and  bonuses)  of all  employees  of  Lawrence.  Except  as
described  on  Schedule  5.25,  Lawrence  has no  written  or oral  contract  of
employment  with any  employee of  Lawrence,  and  Lawrence is not a party to or
subject  to any  collective  bargaining  agreement  nor has  been a party  to or
subject to any collective  bargaining  agreement or collective  bargaining  plan
during the last five (5) years.  Except as described on Schedule 5.25,  Lawrence
is not a party to any pending nor, to  Lawrence's  Knowledge,  threatened  labor
dispute  affecting  the  business  of  Lawrence.  Lawrence  has  complied in all
material respects with all applicable  foreign,  federal,  state and local laws,
ordinances, rules and regulations and requirements relating to the employment of
labor, including,  but not limited to, the provisions thereof relative to wages,
hours,  collective bargaining,  drug testing,  personnel policies and practices,
payment of Social  Security,  unemployment  and withholding  taxes, and ensuring
equality of opportunity  for employment and advancement of minorities and women.
To Lawrence's Knowledge,  Lawrence is not liable for any arrears of wages or any
taxes or  penalties  for  failure to comply  with any of the  foregoing.  At the
Closing Date,  all employees  will be terminable at will by Lawrence and will be
free to become the employees of Buyer, the Surviving Corporation or an affiliate
or  subsidiary  of Buyer.  Lawrence  has not  received  notice from any employee
listed on  Schedule  5.25 as earning an annual  base salary in excess of $40,000
that such employee is terminating  his or her employment  with Lawrence,  nor to
Lawrence's  Knowledge,  does any such  employee  intend to terminate  his or her
employment with Lawrence.

     5.26 Related Party  Transactions.  Schedule 5.26 sets forth the amounts and
other  essential  terms of  indebtedness  or other  obligations,  liabilities or
commitments  (contingent or otherwise) of Lawrence to or from any Shareholder or
any other present officer,  or director,  or any person related to, controlling,
controlled by or under common control with any of the foregoing  (other than for
employment services performed within the past month the payment for which is not
yet due), and all other transactions between such persons and Lawrence.  Without
limiting the  generality of the  foregoing,  as of the date hereof,  none of the
Shareholders or any other present  officer,  or director,  or any person related
to, controlling, controlled by or under common control with




     any of the  foregoing (i) has any material  direct or indirect  interest in
any entity which does  business with  Lawrence,  (ii) has any direct or indirect
interest  in any  property,  asset or right  which  is used by  Lawrence  in the
conduct of its business, or (iii) has any contractual relationship with Lawrence
other than such  relationships  which  occur from  being an  employee,  officer,
director, etc.

     5.27  Hart-Scott-Rodino.  The "total  assets" and the "annual net sales" of
the "ultimate parent entity" of Lawrence (as such terms are used within the

     meaning  of  Section  7A.(a)(2)(A)  of  the   Hart-Scott-Rodino   Antitrust
Improvements Act of 1976) are shown on Schedule 5.27.

     5.28  Customers  and  Suppliers.  Except  as set  forth in  Schedule  5.28,
Lawrence has not received any notice or has any Knowledge that any customer from
whom Lawrence  received more than $50,000 in gross  receipts  during the 1995 or
1996 fiscal years (i) has ceased,  or will cease, to use the products,  goods or
services of its business,  (ii) has substantially reduced, or will substantially
reduce,  the use of  products,  goods or services  of its  business or (iii) has
sought,  or is seeking,  to reduce the price it will pay for products,  goods or
services  of its  business.  Lawrence  has not  received  any  notice or has any
Knowledge  that any supplier from whom Lawrence  purchased  more than $50,000 in
goods  during  the 1995 or 1996  fiscal  years  will  not  sell  raw  materials,
supplies,  merchandise and other goods to Lawrence at any time after the Closing
Date on terms and  conditions  similar  to those  used in the  current  sales to
Lawrence,  subject to general and customary  price  increases and  unforeseeable
supply or demand changes.

     5.29 Stock  Ownership.  Other than through  mutual  funds or other  similar
investment  vehicles  over which no investment  discretion is retained,  none of
Lawrence  or any  Shareholder  owns any  securities  issued  by Buyer and has no
warrants,  options or other rights to purchase or  otherwise  acquire or convert
any obligations into securities issued by Buyer.

     5.30  Insurance.  All of the  Assets are  covered  by such fire,  casualty,
product liability,  environmental  liability and other insurance policies issued
by  reputable  companies  as  are  customarily   obtained  to  cover  comparable
properties  and assets by  businesses  in the  region in which  such  Assets are
located,  in  amounts,  scope  and  coverage  which are  reasonable  in light of
existing  conditions.  Schedule  5.30  sets  forth  a list  of the  policies  of
insurance and fidelity or surety bonds carried by Lawrence,  including,  but not
limited to, fire, flood, liability,  workers' compensation,  officers' life, and
directors' and officers' liability  insurance policies.  Lawrence has not failed
to give any notice or present any material  claim under any insurance  policy in
due and timely fashion,  and all insurance  premiums due and payable by Lawrence
in connection  with the policies set forth on Schedule 5.30 prior to the Closing
Date have been or will be paid. There are no outstanding written requirements or
written  recommendations  by any  insurance  company  that  issued a policy with
respect to any of the  properties  and assets of  Lawrence  by any Board of Fire
Underwriters or other body exercising  similar  functions or by any governmental
authority  requiring or recommending  any repairs or other work to be done on or
with  respect to any of the  properties  or Assets of Lawrence or  requiring  or
recommending  any  equipment or  facilities  to be installed on or in connection
with any of the properties or Assets.  The  unemployment  insurance  ratings and
contributions of Lawrence are also set forth on Schedule 5.30.

     5.31 Information in Disclosure Documents and Registration  Statement.  None
of the  information  supplied or to be supplied by  Lawrence  for  inclusion  or
incorporation by reference in (i) any registration statement filed in connection
with this Agreement will, at the time such registration  statement is filed with
the SEC and at the time it becomes  effective under the Securities Act,  contain
any untrue  statement  of a  material  fact or omit to state any  material  fact
required to be stated  therein or necessary to make the statements  therein,  in
light of the circumstances  under which they are made, not misleading,  and (ii)
any proxy statement  relating to the meeting of Buyer's  stockholders to be held
in connection  with the Merger will, at the date mailed to  stockholders  and at
the  time of the  meeting  of  stockholders  to be held in  connection  with the
Merger,  contain any untrue  statement  of a material  fact or omit to state any
material  fact  required to be stated  therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading.





  5.32 No  Misrepresentation.  Neither this  Agreement  nor any  certificate  or
Schedule  or other  information  furnished  by or on behalf of  Lawrence  or any
Shareholder  pursuant  to this  Agreement  contains  any untrue  statement  of a
material fact or, when this Agreement and such certificates, Schedules and other
information  are  taken  in their  entirety,  omits  to  state a  material  fact
necessary to make the statements contained herein or therein not misleading.

                                   ARTICLE VI

                     Conduct of Business Pending the Merger

     6.1 Conduct of Business Pending the Merger. Lawrence agrees that, except as
expressly  contemplated  by this  Agreement,  during the period from the date of
this Agreement and continuing until the Effective Time:

     (a) The business of Lawrence  shall be  conducted  only in the ordinary and
usual course of business and consistent with past practices;

     (b) Lawrence shall not (i) amend its Articles of  Incorporation  or Bylaws;
or (ii)  split,  combine or  reclassify  any shares of its  outstanding  capital
stock,  declare,  set aside or pay any dividend or other distribution payable in
cash,  stock or  property  in respect  of its  capital  stock,  or  directly  or
indirectly redeem, purchase or otherwise acquire any shares of its capital stock
or other securities;

     (c) Lawrence  shall not (i) authorize for issuance,  issue,  sell,  pledge,
dispose of,  encumber,  deliver or agree or commit to issue,  sell,  pledge,  or
deliver  any  additional  shares of, or rights of any kind to acquire any shares
of, its capital stock of any class (whether  through the issuance or granting of
options, warrants, commitments, subscriptions, rights to purchase or otherwise),
(ii)  acquire,  dispose of,  transfer,  lease,  or  license,  any fixed or other
substantial  assets other than in the ordinary course of business and consistent
with past practices;  (iii) incur,  assume or prepay any material  indebtedness,
liability or  obligation  or any other  material  liabilities  or issue any debt
securities;  (iv)  assume,  guarantee,  endorse or  otherwise  become  liable or
responsible (whether directly, contingently or otherwise) for the obligations of
any other person; (v) make any material loans, advances or capital contributions
to,  or  investments  in,  any other  person;  (vi)  fail to  maintain  adequate
insurance consistent with past practices for its business; (vii) take any action
described  in items (i)  through  (x) of Section  5.6 without the consent of the
Buyer; or (viii) enter into any contract,  agreement,  commitment or arrangement
with respect to any of the foregoing;

     (d)  Lawrence  shall use  reasonable  efforts to maintain  the  Assets,  to
preserve intact its business organization, to keep available the services of its
present officers and key employees, and to preserve the goodwill of those having
business  relationships  with it;  provided,  however,  that no  breach  of this
covenant  shall be deemed to have occurred as a result of any matter arising out
of the  transactions  contemplated by this Agreement or the public  announcement
thereof;

     (e) Lawrence shall use all reasonable efforts to prevent any representation
or warranty of Lawrence herein from becoming  materially  untrue or incorrect in
any material respect; and

     (f) Notwithstanding anything to the contrary in subsections (a) through (e)
above,  Lawrence shall be permitted to take the following  actions:  (i) pay any
judgment or settlement of pending legal claims  (including  penalties,  fees, or
taxes related  thereto)  provided that Lawrence will not without Buyer's written
consent enter into any settlement  which imposes upon Lawrence any  restrictions
or  limitations  on its ability to operate  its  business  consistent  with past
practice;  (ii) repay any  guarantors of Lawrence's  obligations  or pledgors of
collateral to secure Lawrence's  obligations  (including  collateral  pledged to
secure letters of credit relating to such obligations) if and to the extent such
guarantors  pay any  amount  under  the  guaranty,  or such  pledgors  have such
collateral foreclosed upon, in connection with any of Lawrence's obligations, on
behalf of Lawrence,  and (iii) pay  compensation  as permitted under Section 6.2
below.





     6.2 Compensation  Plans.  During the period from the date of this Agreement
and  continuing  until the  Effective  Time,  Lawrence  agrees that it will not,
without the prior written consent of Buyer (except as required by applicable law
or pursuant to existing  contractual  arrangements or other plans or commitments
as otherwise  disclosed  in writing  pursuant  hereto) (a) enter into,  adopt or
amend any Employee Benefit Programs as to increase the benefits thereunder,  (b)
grant or become  obligated to grant any increase in the  compensation  or fringe
benefits  of  directors,  officers or  employees  (including  any such  increase
pursuant to any Employee  Benefit  Program) or any increase in the  compensation
payable  or  to  become  payable  to  any  officer,   except  for  increases  in
compensation in the ordinary  course of business  consistent with past practice,
or  enter  into  any  contract,  commitment  or  arrangement  to do  any  of the
foregoing,  except for normal  increases  and non-stock  benefit  changes in the
ordinary course of business consistent with past practice, (c) institute any new
Employee Benefit  Program,  (d) make any material change in any Employee Benefit
Program  arrangement  or enter  into any  employment  or  similar  agreement  or
arrangement  with  any  employee,  or (e)  enter  into or  renew  any  contract,
agreement,  commitment or arrangement providing for the payment to any director,
officer or employee of  compensation  or  benefits  contingent,  or the terms of
which are altered in favor of such individual, upon the occurrence of any of the
transactions  contemplated  by this Agreement.  Notwithstanding  anything to the
contrary in this  Section  6.2,  Lawrence  shall be  permitted to (i) pay fiscal
year-end cash bonuses to its employees in amounts  consistent with past practice
and (ii) enter into staying  bonus/severance  agreements with the employees (the
"Designated  Employees") listed on Exhibit "A-1" in the form attached as Exhibit
"A-2."

     6.3 Legal  Conditions  to Merger.  Each of Lawrence and Buyer shall use all
reasonable  efforts (a) to take,  or cause to be taken,  all actions  reasonably
necessary to comply promptly with all legal requirements which may be imposed on
such party or its subsidiaries  with respect to the Merger and to consummate the
transactions contemplated by this Agreement, and (b) to obtain (and to cooperate
with the other party to obtain) any  consent,  authorization,  order or approval
of, or any  exemption  by, any  governmental  entity and or any other  public or
private  third  party  which is required to be obtained or made by such party or
any of its  subsidiaries  in  connection  with the Merger  and the  transactions
contemplated by this  Agreement;  provided,  however,  that a party shall not be
obligated  to take any action  pursuant to the  foregoing  if the taking of such
action or such  compliance  or the  obtaining  of such  consent,  authorization,
order, approval or exemption would, in Buyer's reasonable opinion, result in the
imposition  of a  condition  or  restriction  on such party or on the  Surviving
Corporation  of the type  referred to in Section 8.1; and provided  further that
neither  party shall be  obligated  to take any action to obtain any third party
consent where a failure to obtain such consent  would not in Buyer's  reasonable
opinion  have a Material  Adverse  Effect.  Each party will  cooperate  with and
promptly  furnish  information  to the other in connection  with any such burden
suffered by, or requirement  imposed upon, either of them in connection with the
foregoing.

                                   ARTICLE VII

                              Additional Agreements

     7.1 Access and  Information.  Lawrence shall afford to Buyer and to Buyer's
financial   advisors,   legal  counsel,   accountants,   consultants  and  other
representatives  reasonable  access during normal business hours  throughout the
period from the date hereof to the Effective Time to all of its books,  records,
properties,  facilities,  personnel,  commitments and records (including but not
limited to tax returns) and, during such period, shall furnish promptly to Buyer
all information  concerning its business,  properties and personnel as Buyer may
reasonably request.

     7.2 Pooling.  None of  Lawrence,  Buyer and Buyer Sub shall take any action
which would jeopardize the treatment of the Merger as a tax-free  reorganization
or which  would  prevent  the Merger  from being  accounted  for as a pooling of
interests.

     7.3  Public  Announcements.  Lawrence  understands  that  Buyer is a public
company, and that until the transactions contemplated by this Agreement are made
public, Lawrence and the Shareholders and those whom





     they  advise of this  transaction  (which  shall only be on a "need to know
basis")  may be privy to  material  inside  information;  accordingly,  Lawrence
understands,  and Lawrence has apprized  those of its  officers,  directors  and
employees who know of the potential transaction, of the need for confidentiality
and the potential  consequences  of any trading in Buyer Common Stock. No public
announcements  shall be made  concerning the  negotiations  between the parties,
this Agreement or the transactions contemplated herein, without the prior mutual
consent of Lawrence and Buyer,  except as may be required by law or the rules or
regulations  of The Nasdaq Stock Market.  The parties agree that, to the maximum
extent  feasible,  they will  advise  and confer  with each  other  prior to the
issuance of any reports,  statements or releases pertaining to this Agreement or
the transactions  contemplated herein. In addition, the parties agree to respond
to all  inquiries  with respect to the Merger by stating that it is their policy
not to comment on such matters.

  7.4 Additional Agreements.

     (a) Subject to the terms and conditions hereof,  each of the parties hereto
agrees to use all reasonable  efforts to take, or cause to be taken, all actions
and to do, or cause to be done, all things necessary,  proper or advisable under
applicable   laws  and   regulations   to  consummate  and  make  effective  the
transactions  contemplated  by this  Agreement,  including  using all reasonable
efforts to obtain all necessary waivers,  consents and approvals,  and to effect
all necessary registrations and filings. In case at any time after the Effective
Time any further  action is  necessary or desirable to carry out the purposes of
this Agreement, the proper officers and/or directors of the Companies shall take
all such necessary action.

     (b) Subject to the terms and  conditions  hereof,  Buyer and Lawrence  will
cooperate  with  each  other  and use all  reasonable  efforts  to  prepare  all
necessary  documentation to effect promptly all necessary  filings and to obtain
all necessary permits, consents,  approvals, orders and authorizations of or any
exemptions by, all third parties and governmental bodies necessary to consummate
the transactions contemplated by this Agreement.

     (c) Each  party  will keep the other  party  apprized  of the status of any
inquiries made of such party by any governmental  agency or authority or members
of their  respective  staffs with respect to this Agreement or the  transactions
contemplated herein.

     7.5 Confidentiality. All confidential information disclosed by any party to
this  Agreement  to any other party to this  Agreement  in  connection  with the
transactions  contemplated hereby shall be kept confidential by such other party
and shall not be used by such other party otherwise than as herein contemplated,
except to the extent that (a) it is or becomes generally available to the public
other  than as a result  of a  wrongful  disclosure  by a party  receiving  such
confidential  information  hereunder,  (b) it was readily available to the party
receiving such information on a  non-confidential  basis prior to its disclosure
hereunder, (c) it was already lawfully in the receiving party's possession prior
to its disclosure hereunder,  (d) it becomes available to the receiving party on
a non-confidential basis from a source other than the disclosing party hereunder
without violation of such source's confidentiality agreement with the disclosing
party or its  representatives or of legal,  fiduciary or ethical  constraints on
disclosure of such information,  (e) it may be required by law, or (f) such duty
as to  confidentiality  is waived  by the other  party.  Such  obligation  as to
confidentiality  and non-use shall survive the termination of this Agreement for
any reason. This Section 7.5 shall survive termination hereof or consummation of
the  transactions  hereunder,   and  shall  replace  any  prior  confidentiality
agreements,  including  the  Confidentiality  Agreement  dated October 23, 1996,
entered into by Lawrence and Buyer.

     7.6  Guarantees.  Buyer  shall  cooperate  with  Lawrence  and use  Buyer's
reasonable  efforts to obtain,  prior to the Effective  Time, the release of all
guarantees listed on Schedule 7.6 ("Guarantees") provided by individuals, LSI or
LSRL on behalf of  Lawrence  relating to  Lawrence's  bank  financings  or other
indebtedness  (the  "Releases"),  provided that no modification to, or amendment
of, the terms of any such bank financing or other  indebtedness shall be made in
connection with obtaining a Release without  Buyer's prior written  consent.  In
the event  that the  parties  are  unable to obtain  the  release  of any of the
Guarantees, the Buyer shall indemnify the guarantors against any losses incurred
by them  under  such  Guarantees  as a result of a default  by  Lawrence  of its
obligations as provided in Section 10.3.





     7.7 Noncompete Agreement.  At the Effective Time, Lamonte H. Lawrence shall
enter into a Noncompete Agreement in the form attached hereto as Exhibit "B."

     7.8 Consulting Agreement.  At the Effective Time, the Surviving Corporation
shall enter into  Consulting  Agreement with LSI in the form attached  hereto as
Exhibit "C."

     7.9 Notices of Certain  Events.  From the date hereof to and  including the
Closing Date,  Lawrence and Buyer  covenant and agree to notify the other of (i)
any notice or other  communication  from any person alleging that the consent of
such  person  is  or  may  be  required  in  connection  with  the  transactions
contemplated by this Agreement;  (ii) any notice or other communication from any
foreign or domestic  governmental  authority in connection with the transactions
contemplated  by this  Agreement;  and (iii) any matter  arising and  discovered
after the date of this Agreement  that, if existing or known on the date of this
Agreement,  would have been required to be disclosed pursuant to this Agreement,
or that  constitutes  a breach or  prospective  breach of this  Agreement by the
notifying party or its affiliates.

     7.10 No Solicitation. Lawrence will not, and Lawrence will use best efforts
to cause each  Shareholder  not to,  directly or indirectly,  solicit any active
discussions or negotiations with, or provide  information to, any person,  other
than Buyer,  concerning  any possible  proposal  regarding  the  acquisition  of
Lawrence or any part thereof,  or any merger or consolidation  thereof or accept
any such proposal.

     7.11  Preparation of S-4 and the Proxy  Statement.  Buyer shall prepare and
file as promptly as  practicable  after the execution of this Agreement with the
SEC a proxy  statement  and a  registration  statement on Form S-4 (in which the
proxy statement will be included as a prospectus)  (the "S-4").  Buyer shall use
its best efforts to have the S-4 declared  effective under the Securities Act as
promptly  as  practicable  after such  filing.  Buyer shall also take any action
(other than qualifying to do business in any jurisdiction in which it is not now
so qualified) required to be taken under any applicable state securities laws in
connection  with the issuance of Buyer Common Stock in the Merger,  and Lawrence
shall furnish all information concerning Lawrence and the Shareholders as may be
reasonably requested in connection with any such action.

     7.12 Nasdaq Listing. Buyer will make such filings as are necessary with The
Nasdaq Stock Market regarding the transactions  contemplated  hereby,  including
filing a Notification  Form for Listing of Additional Shares with respect to the
shares of Buyer Common Stock to be issued in the Merger.

     7.13 Qualified  Retirement Plan. The Lawrence Profit Sharing Plan and Trust
(the "Plan and Trust") shall be continued by Lawrence for at least twelve months
from the Effective Time (the "Continuation Period") with respect to the Lawrence
employees at the Effective  Time (except for LSRL  employees),  and the Lawrence
employees  shall continue to participate in the Plan and Trust during such time.
After  the  Continuation  Period,  neither  Lawrence  nor  Buyer  will  have any
obligation  to continue  the Plan and Trust.  At Buyer's  discretion,  after the
Continuation  Period  Lawrence  may  continue  the Plan and  Trust,  freeze  it,
terminate  it,  or merge  it into  any  other  qualified  plan in which  Buyer's
employees are eligible to  participate.  At the Effective  Time,  LSRL employees
shall cease to participate in the Plan and Trust. After the Continuation Period,
Lawrence  employees  shall be eligible to  participate  in Buyer's  401(k) plan,
except to the extent Buyer has elected to continue the Plan and Trust beyond the
Continuation  Period in which case the Lawrence  employees will remain  eligible
under  the Plan and  Trust.  When  Lawrence  employees  do  become  eligible  to
participate in Buyer's 401(k) plan, they shall be given credit for their service
with Lawrence  toward  eligibility  requirements  and vesting in Buyer's  401(k)
plan.

     7.14 Name. It is Buyer's current  intention that the Surviving  Corporation
will   continue  to  do  business   under  the  name   "Lawrence   Semiconductor
Laboratories, Inc." following the Closing.

     7.15  Conduct of Buyer's  Business  Pending the Merger.  Buyer agrees that,
except  as  expressly  contemplated  by this  Agreement,  and  except  as may be
necessary or required in connection with the




     consummation of the transaction  contemplated by the ADCS Merger Agreement,
during the  period  from the date of this  Agreement  and  continuing  until the
Effective Time:

     (a) The business of Buyer shall be conducted only in the ordinary and usual
course of business and consistent with past practices;

     (b) Buyer shall not (i) amend its Articles of Incorporation  or Bylaws;  or
(ii) split,  combine or reclassify any shares of its outstanding  capital stock,
declare,  set aside or pay any dividend or other  distribution  payable in cash,
stock or  property in respect of its capital  stock,  or directly or  indirectly
redeem,  purchase or otherwise  acquire any shares of its capital stock or other
securities;

     (c) Buyer shall not authorize for issuance,  issue, sell,  pledge,  dispose
of, encumber,  deliver or agree or commit to issue, sell, pledge, or deliver any
additional  shares  of, or rights of any kind to  acquire  any  shares  of,  its
capital stock of any class (whether through the issuance or granting of options,
warrants,  commitments,   subscriptions,   rights  to  purchase  or  otherwise),
provided,  however,  that Buyer may do any of the  foregoing if the value of the
consideration  per Share  received by Buyer in such  transaction is greater than
the greater of (i) $17 and (ii) the closing  price of Buyer  Common Stock on the
Nasdaq National Market on the trading day immediately  preceding the date of the
consummation of such transaction. Notwithstanding the foregoing, Buyer may grant
additional  options  under  its  existing  option  plans  consistent  with  past
practice,  and may also issue additional shares upon the exercise of outstanding
options and warrants.

     (d) Buyer shall use reasonable  efforts to maintain its assets, to preserve
intact its business organization,  to keep available the services of its present
officers  and key  employees,  and to  preserve  the  goodwill  of those  having
business  relationships  with it;  provided,  however,  that no  breach  of this
covenant  shall be deemed to have occurred as a result of any matter arising out
of the  transactions  contemplated by this Agreement or the public  announcement
thereof;

     (e) Buyer shall use all reasonable efforts to prevent any representation or
warranty of Buyer  herein from  becoming  materially  untrue or incorrect in any
material respect; and

     (f) Notwithstanding anything to the contrary in subsections (a) through (e)
above,  Buyer shall be  permitted  to take the  following  actions:  (i) pay any
judgment or settlement of pending legal claims  (including  penalties,  fees, or
taxes related thereto) provided that Buyer will not without  Lawrence's  written
consent enter into any settlement  which imposes upon Buyer any  restrictions or
limitations  on its  ability  to  operate  its  business  consistent  with  past
practice;  and (ii) repay any  guarantors of Buyer's  obligations or pledgors of
collateral to secure Buyer's obligations (including collateral pledged to secure
letters  of credit  relating  to such  obligations)  if and to the  extent  such
guarantors  pay any  amount  under  the  guaranty,  or such  pledgors  have such
collateral  foreclosed upon, in connection with any of Buyer's  obligations,  on
behalf of Buyer.

                                  ARTICLE VIII

                    Conditions to Consummation of the Merger

     8.1  Conditions  to Both  Lawrence's  and Buyer's  Obligation to Effect the
Merger.  The  respective  obligations  of  Lawrence  and  Buyer  to  effect  the
transactions contemplated in this Agreement shall be subject to the satisfaction
at or prior to the  Effective  Time of the  following  conditions,  which may be
waived by mutual agreement:  (a) no preliminary or permanent injunction or other
order by or before any federal, state or foreign court of competent jurisdiction
which prohibits the consummation of the Merger shall have been issued and remain
in effect; and (b) no statute, rule, regulation,  executive order, stay, decree,
or judgment shall have been enacted, entered, issued, promulgated or enforced by
or before any court or  governmental  authority which prohibits or restricts the
consummation of the Merger. Other than the filing of Articles of Merger and Plan
of Merger with the Arizona Corporation  Commission and the Secretary of State of
the State of Delaware, all authorizations,  consents, orders or approvals of, or
declarations or filings with, and all expirations of waiting





     periods  imposed  by,  any  governmental  entity  (all  of  the  foregoing,
"Consents")  which are necessary for the consummation of the Merger,  other than
Consents  the failure to obtain which would have no Material  Adverse  Effect on
the consummation of the Merger or on the Surviving Corporation,  Buyer and their
subsidiaries shall have been filed, occurred or been obtained (all such permits,
approvals,  filings and consents and the lapse of all such waiting periods being
referred to as the  "Requisite  Regulatory  Approvals"),  and all such Requisite
Regulatory Approvals shall be in full force and effect.

  8.2 Conditions to Obligation of Each Company to Effect the Merger.

     (a) The  obligation  of  Lawrence  to effect  the  Merger  shall be further
subject to the following  conditions:  (i) Buyer and Buyer Sub shall satisfy all
of the  obligations  under this Agreement  required to be performed by Buyer and
Buyer Sub at or prior to the Effective Time in all material  respects,  (ii) the
representations  and  warranties  of  Buyer  and  Buyer  Sub  contained  in this
Agreement  shall be true and correct in all material  respects  when made and at
and as of the  Effective  Time  as if made at and as of  such  time,  except  as
contemplated  by this  Agreement,  and (iii) Lamonte H. Lawrence shall have been
elected  to serve as a member of  Buyer's  six (6)  person  Board of  Directors,
effective  immediately  following  the Closing  Date,  provided  that if Section
3.2(f) shall apply,  in lieu of the  foregoing,  Lamonte H. Lawrence  shall have
been elected to serve as a member of the class of  directors  elected for a term
not to exceed two (2) years on Holdings'  seven (7) person  Board of  Directors.
These  conditions  may be  waived by  Lawrence.  Further,  if and to the  extent
Holdings is formed on or prior to the  Effective  Time,  and  Section  3.2(f) is
applicable,  then at the Effective  Time: (i) Holdings shall own directly all of
the issued and outstanding  capital stock of Buyer; (ii) Holdings shall not have
incurred any  liabilities of any nature  whatsoever,  except for the liabilities
described in Section 4.2(k);  and (iii) the  authorized,  issued and outstanding
capital stock of Holdings shall be substantially  identical to that of the Buyer
as of  the  Effective  Time,  subject  only  to  changes  therein  necessary  to
consummate the transactions  contemplated by the ACDS Merger Agreement, and (iv)
evidence  reasonably  satisfactory to Lawrence that all conditions to Lawrence's
obligations hereunder have been satisfied in all material respects.

     (b) The  obligation of Buyer to effect the Merger shall be further  subject
to the following  conditions:  (i) Lawrence shall satisfy all of the obligations
under this  Agreement  required to be  performed  by Lawrence at or prior to the
Effective Time in all material respects, (ii) the representations and warranties
of  Lawrence  contained  in this  Agreement  shall  be true and  correct  in all
material  respects when made and at and as of the  Effective  Time as if made at
and as of such  time,  except  as  contemplated  by this  Agreement,  and  (iii)
evidence  reasonably  satisfactory  to Buyer  that  all  conditions  to  Buyer's
obligations  hereunder  have been  satisfied  in all  material  respects.  These
conditions may be waived by Buyer.

     8.3 Additional  Conditions to Obligations of Buyer. The obligation of Buyer
to effect the Merger shall be further subject to the following conditions:

     (a) This Agreement and the  consummation of the Merger shall have been duly
approved and adopted by the  affirmative  vote of the holders of at least 95% of
the voting  securities of Lawrence.  This Agreement and the  consummation of the
Merger shall have been duly approved and adopted by the stockholders of Buyer in
accordance with the DGCL and its charter.

     (b)  Ernst & Young  LLP,  independent  accountants  to  Buyer,  shall  have
rendered its opinion(s),  addressed to Buyer, in form and substance satisfactory
to Buyer as to the  appropriateness  of pooling of interest  accounting  for the
Merger under Accounting  Principles Board Opinion No. 16 and Ernst & Young shall
have  rendered  its  opinion  to Buyer to the  effect  that the  Merger has been
structured  in a  manner  which  is  tax-free  with  respect  to  Buyer  and its
stockholders and Lawrence and the Shareholders.

     (c) Lawrence shall have delivered (or cause to be delivered)  duly executed
counterparts of Employee Proprietary  Information and Inventions Agreements with
Buyer and the Surviving Corporation  substantially in the form of Exhibit 8.3(d)
duly executed by each employee of Lawrence.





     (d) The share  certificates  representing all of the issued and outstanding
Lawrence Shares as of the Closing Date (other than Dissenting  Shares),  in each
case duly endorsed in blank, shall have been surrendered for cancellation.

     (e) The S-4  registering  the  issuance and delivery of the shares of Buyer
Common  Stock  shall  have  been  declared  effective  in  accordance  with  the
provisions of the Securities Act, and no stop order suspending the effectiveness
of the S-4 shall have been issued by the SEC. All other filings  necessary under
federal and state  securities  laws to permit the  issuance  and delivery of the
shares of Buyer Common Stock in compliance  therewith  shall have been made, and
any  authorizations  in  connection  therewith  from all  applicable  securities
regulatory authorities shall have been obtained.

     (f) There  shall not have been a  material  adverse  change in the  general
affairs,  business,  business  prospects,   properties,   management,  condition
(financial or  otherwise)  or results of operations of Lawrence,  whether or not
arising from transactions in the ordinary course of business, and Lawrence shall
not have  sustained  any  material  loss or  interference  with its  business or
properties from fire, explosion, flood or other casualty, whether or not covered
by  insurance,  or from any labor dispute or any court or  legislative  or other
governmental action, order or decree.

     (g) The Mesa real estate (both the developed and undeveloped parcels) shall
have been reconveyed to Lawrence from LSI, subject to the liens and encumbrances
existing on the date hereof, for an aggregate  consideration no greater than net
book value.

     (h) Buyer shall have  received  satisfactory  Phase I and, if,  applicable,
Phase II  environmental  site  assessments of the Lawrence  Facilities,  and all
permits  necessary  for the  operation  of  those  facilities  shall  have  been
appropriately transferred, if required by applicable law.

     (i) That certain litigation currently pending in the United States District
Court,  Northern  District of California,  San Jose Division,  captioned Applied
Materials, Inc. v. Lawrence Semiconductor, Inc. (C-96 20591 EAI) shall have been
dismissed with prejudice.

     8.4 Additional  Conditions to  Obligations  of Lawrence.  The obligation of
Lawrence  to  effect  the  Merger  shall be  further  subject  to the  following
conditions:

     (a) There  shall not have been a  material  adverse  change in the  general
affairs,  business,  business  prospects,   properties,   management,  condition
(financial  or  otherwise)  or results of  operations  of Buyer,  whether or not
arising from  transactions in the ordinary  course of business,  and Buyer shall
not have  sustained  any  material  loss or  interference  with its  business or
properties from fire, explosion, flood or other casualty, whether or not covered
by  insurance,  or from any labor dispute or any court or  legislative  or other
governmental action, order or decree.

     (b) Price Waterhouse,  LLP, independent accountants to Lawrence, shall have
rendered its opinion(s) addressed to Lawrence and Lamonte H. Lawrence, and dated
the  Closing  Date,  in form and  substance  satisfactory  to Lawrence as to the
appropriateness  of pooling interest  accounting for the Merger under Accounting
Principles Board Opinion No. 16.

                                   ARTICLE IX

                        Termination, Amendment and Waiver

     9.1   Termination.   This  Agreement  may  be  terminated  and  the  Merger
contemplated hereby abandoned at any time prior to the Effective Time:

     (a) By mutual written consent of Buyer and Lawrence.





     (b) By Buyer or  Lawrence  if the  Merger  shall not have been  consummated
within one hundred  twenty (120) days of the date hereof,  unless the failure of
the  Effective  Time to occur by such date  shall be due to the  failure  of the
party  seeking to terminate  this  Agreement to perform or observe the covenants
and agreements of such party set forth herein.

     (c)  By  Buyer  or  Lawrence   if  there  shall  have  been  any   material
misrepresentation  or material breach of a material obligation of the other and,
if such breach is curable,  such  default  shall have not been  remedied  within
thirty (30) days after receipt by the defaulting party of notice in writing from
the other party  specifying  such  breach and  requesting  that it be  remedied;
provided, that such thirty-day period shall be extended for so long as the other
party shall be making diligent attempts to cure such default,  but not beyond an
additional thirty (30) days.

     (d) By Buyer or  Lawrence,  if any court of competent  jurisdiction  in the
United  States or other  United  States  governmental  body shall have issued an
order,  decree or ruling or taken any other  action  restraining,  enjoining  or
otherwise  prohibiting  any Merger and such order,  decree,  ruling or any other
action shall have become final and non-appealable.

     9.2 Termination;  Termination  Payment. In the event of termination of this
Agreement,  this  Agreement  shall  forthwith  become void and there shall be no
liability  on the  part  of  any  of the  parties  hereto  or  their  respective
affiliates,  directors, officers, or stockholders,  except as provided below and
except for those obligations intended to survive termination.  In the event that
either  the Buyer or  Lawrence  shall  terminate  this  Agreement  because  of a
material  misrepresentation  or a material breach of a material  covenant by the
other party  (subject to the 30-day  notice and cure period  provided in Section
9.1(c)), the breaching party shall be liable to and shall pay to the terminating
party by wire transfer the sum of $5,000,000 in full  satisfaction of all claims
within fifteen (15) business days after the breaching party's receipt of written
notice of  termination.  It is agreed that the  payments due  hereunder  are the
exclusive  remedy  for  termination  of  this  Agreement.   Notwithstanding  the
foregoing,  in the event of a breach by Lawrence of Section 7.10,  the Buyer may
pursue any and all remedies available to it at law or in equity. Recovery by the
Buyer of a  termination  payment  under this  Section 9.2 shall not bar any such
action for  breach of  Section  7.10,  but the  amount of any  monetary  damages
awarded to the Buyer in such action shall be reduced by the termination  payment
actually received by the Buyer.

     9.3 Amendment. This Agreement may not be amended except by an instrument in
writing signed on behalf of each of the parties hereto.

     9.4 Waiver. At any time prior to the Effective Time, the parties hereto may
(a) extend the time for the  performance of any of the obligations or other acts
of the other parties hereto,  (b) waive any inaccuracies in the  representations
and warranties contained herein or in any document delivered pursuant hereto and
(c) waive compliance with any of the agreements or conditions  contained herein.
Any  agreement  on the part of a party  hereto to any such  extension  or waiver
shall be valid only if set forth in an instrument in writing signed on behalf of
such  party.  Such waiver  shall not  operate as a waiver of, or  estoppel  with
respect to, any subsequent or other failure.

                                    ARTICLE X

           Survival of Representations and Warranties: Indemnification

  10.1 Survival: Indemnification.

     (a) No  representations,  warranties or agreements  contained  herein shall
survive  beyond  the  Effective  Time  except  that  (i)  the   representations,
warranties  and  agreements  contained in Sections 3.1, 3.2, 3.3, 3.4, 3.5, 3.7,
5.13,  5.15, 7.3, 7.4, 7.5, 7.6, 9.2, 9.3, 9.4, 11.1,  11.2,  11.5,  11.6, 11.7,
11.8,  11.9 and 11.10 and Article X hereof shall  survive  beyond the  Effective
Time for the period of the applicable  statute of limitations and (ii) the other
representations  and  warranties of Buyer and Lawrence in this  Agreement  shall
survive beyond the Effective Time





     for one (1) year (the end of such one-year period, the "Termination  Date")
solely for the purpose of the Indemnification Escrow as described below.

     (b) Through the  Indemnification  Escrow  described  below,  the  Surviving
Corporation,  Buyer, Buyer Sub, Holdings and each of their officers,  directors,
employees,   agents,   representatives   and   affiliates   (collectively,   the
"Indemnitees" and, individually, each an "Indemnitee") (subject to the terms and
conditions  below) will be entitled to be  indemnified  and held harmless by the
Shareholders  against  and in respect of any  claims,  damages,  losses,  costs,
expenses,   liabilities  (absolute,   accrued,  contingent  or  otherwise),  and
reasonable legal fees and expenses (collectively, "Losses") incurred or suffered
by any  Indemnitee,  directly  or  indirectly,  caused by or  arising  out of or
related to any untruth,  inaccuracy,  error in, or breach of, any representation
or warranty  (when made or deemed to be made) or covenant of Lawrence  contained
in this  Agreement.  The rights of  Indemnitees  to  indemnification  under this
Subsection  10.1(b) shall be limited to, and satisfied  solely out of and to the
extent of, the Indemnification Escrow as it may be reduced or increased pursuant
to Subsections  3.2(d),  3.4(e), 3.5 this Section 10.1 and the Escrow Agreement,
and any Loss shall be reduced by any amounts actually received by the Indemnitee
under applicable  insurance policies,  if any. All  indemnification  requests of
Indemnitees hereunder shall be made by or through Buyer.

     (c) By voting to  approve  this  Agreement  or by  surrendering  his or its
Certificate(s)  evidencing Lawrence Shares at Closing,  each Shareholder,  other
than   Shareholders  who  have  perfected   dissenter  rights  under  the  ABCA,
acknowledges and agrees that (i) the  consideration to which such Shareholder is
entitled  hereunder is subject to adjustment as contemplated in Articles III and
X, (ii) the  Indemnification  Escrow Shares and the Escrow  Adjustment  shall be
placed in the  Indemnification  Escrow provided for in an Escrow Agreement to be
entered  into,  as of the  Effective  Time,  in the form of Exhibit "D" attached
hereto and (iii) the Escrow Agent shall be, and is hereby,  authorized from time
to  time  to  transfer  all or  any  portion  of the  amounts  so  deposited  in
satisfaction of the indemnity  obligation and as otherwise  provided pursuant to
Articles  III and X and as  contemplated  in the  Escrow  Agreement.  Except  as
provided  in  Section  10.5,  the  Indemnitees  agree  to  look  solely  to  the
Indemnification   Escrow  for   recourse  in  the  event  of  a  breach  of  any
representation  or warranty or covenant of Lawrence  contained in this Agreement
and  will  not  look  directly  to  any  Shareholder  or  Shareholders  for  any
indemnification hereunder.

     (d) If any Indemnitee  shall have any liquidated  claim of  indemnification
pursuant  to  Subsection  10.1(b),  it shall  promptly  request  that Buyer give
written notice thereof to the Representative  and the Escrow Agent,  including a
brief  description  of the facts  upon  which such claim is based and the amount
thereof.  Any Indemnitee  may also request that Buyer provide  written notice to
the   Representative   and  the  Escrow  Agent  of  any  unliquidated  claim  of
indemnification pursuant to Subsection 10.1(b), including a brief description of
the facts upon which such claim is based and a demand for a reserve amount to be
created in respect of such claim.  Any claim made by any  Indemnitee  for Losses
that are unliquidated shall not be paid, but shares of Buyer Common Stock valued
at the  Average  Closing  Price  equal  to  such  claim  shall  be  held  in the
Indemnification  Escrow until such Losses are fully liquidated.  Notwithstanding
the  foregoing,  no amount  will be  delivered  to an  Indemnitee  pursuant to a
written claim notice (with respect to either a liquidated or unliquidated claim)
pursuant to Subsection  10.1(b)  above and Section 10.5 below  unless,  and then
only to the extent that, the aggregate amount of Losses sustained by Indemnitees
as a group and as to which  written  claim  notices have been given  exceeds Two
Hundred Fifty Thousand Dollars  ($250,000) (taking into account any reduction of
prior noticed claims resulting from the dispute resolution procedures of Section
10.2 below).

     (e) If the Representative  shall notify the Escrow Agent in writing (within
thirty (30) days of delivery to the Escrow Agent by Buyer of a written notice of
claim for  indemnification)  of his objection to a claim of indemnification or a
demand for the creation of a reserve against the Indemnification  Escrow for any
unliquidated  claim (or the amount  thereof),  the Escrow  Agent  shall hold the
disputed amount of funds in the  Indemnification  Escrow until the rights of the
Shareholders  and the  Indemnitees  with  respect  thereto have been agreed upon
between the  Representative  and the claiming  Indemnitee.  In the event such an
agreement is reached,  the claiming Indemnitee shall request Buyer to provide to
the  Escrow  Agent a written  notice  signed by the  Representative  in the form
specified in the Escrow Agreement. If no such agreement has been reached, either
the Indemnitee or





     the Representative may, not earlier than thirty (30) days after the date of
the  initial  claim  notice,   submit  the  dispute  to  confidential,   binding
arbitration in New York, New York before a panel of three arbitrators,  one each
to be selected by Buyer and the Representative,  and the third to be selected by
the other two  arbitrators,  pursuant to the procedures and rules for commercial
arbitration of the American Arbitration  Association.  The Escrow Agent may rely
on the order or other  determination  of such  arbitrators.  If such arbitrators
shall determine that any part of the  Indemnification  Escrow is to be delivered
to an Indemnitee or is to be set aside in a reserve for any unliquidated  claim,
the  Escrow  Agent  shall  promptly   following   receipt  of  a  copy  of  such
determination establish such reserve or deliver to such Indemnitee the lesser of
(i) the  amount  of the  claim or  claims as  awarded  to the  Indemnitee  to be
satisfied, subject to the limitation set forth in Subsection 10.1(d) or (ii) the
entire amount remaining in the Indemnification  Escrow. Any disputed amounts not
awarded to the  Indemnitee  shall  promptly  be  transferred  to the  unreserved
portion of the Indemnification  Escrow.  Buyer and the Representative shall bear
their  respective  costs and expenses of any such  arbitration.  Buyer expressly
acknowledges  that  Polese,  Pietzsch,  Williams & Nolan,  P.A.  can continue to
represent  Representative  in any such dispute and hereby waives any conflict of
interest which might otherwise exist.

     (f) Promptly after the Termination  Date, the Escrow Agent shall distribute
to the Shareholders on a pro rata basis all remaining  unreserved amounts in the
Indemnification  Escrow, less an amount equal to the dollar amount of all claims
pursuant  to  Subsection  10.1(c)  that are  still in  process  and (i) that are
then-payable liquidated claims, (ii) for which a reserve established pursuant to
Subsection  10.1(d)  then  exists,  or (iii)  that are still in the  process  of
resolution  pursuant to this Section  10.1.  No new claims may be brought  under
this Section 10.1 after the Termination Date.

     (g)  After  the  Termination  Date,  (i)  as  each  matter  referred  to in
Subsection  10.1(f)  is  resolved  or  otherwise  concluded  and  (ii)  as  each
undisputed  unliquidated claim which remains  unliquidated as of the Termination
Date is liquidated,  the Escrow Agent shall distribute to the Shareholders their
respective  pro rata  portion of the Escrow  Fund (as defined in Exhibit D) then
determined by the Escrow Agent to be free of any rights of any  Indemnitee  and,
when all  such  matters  are  resolved  and  such  claims  are  liquidated,  the
obligations under Subsection 10.1(b) hereof shall terminate. The Indemnification
Escrow shall be  terminated  when all of the Escrow Fund in the  Indemnification
Escrow  shall have been  disbursed by the Escrow  Agent in  accordance  with the
provisions hereof and the Escrow Agreement.

     (h) In taking any action whatsoever hereunder,  the Representative shall be
protected  in  relying  upon any  notice,  paper or  other  document  reasonably
believed by him to be genuine,  or upon any evidence reasonably deemed by him to
be sufficient.  The  Representative  may consult with counsel in connection with
his duties hereunder and shall be fully protected in any act taken,  suffered or
permitted by him in good faith or in accordance with the advice of counsel.  The
Representative  shall not be liable to the  Shareholders  for the performance of
any act or the failure to act so long as he acted or failed to act in good faith
within what he  reasonably  believed to be the scope of his  authority and for a
purpose  which  he  reasonably  believed  to be in  the  best  interests  of the
Shareholders.

     10.2  Procedure.  In the event that, at any time or from time to time after
the  Effective  Time,  a  person  indemnified  under  Section  10.1 or 10.3  (an
"Indemnified Party") shall sustain a loss of any nature whatsoever against which
such  Indemnified  Party is indemnified  under this Agreement,  such Indemnified
Party shall  notify the party hereto  obligated to provide such  indemnification
(the  "Indemnitor")  of any such  loss so  sustained.  If  Indemnitor  is Buyer,
Indemnitor shall within thirty (30) days after transmittal of such notice pay to
such  Indemnified  Party the  amount of such loss so  sustained,  subject to the
right to contest any claim. If Indemnitor is the Shareholders,  payment shall be
governed by the Escrow  Agreement.  The Indemnified  Party shall promptly notify
the Indemnitor of the existence of any claim,  demand, or other matter involving
liabilities  to  third  parties  to  which  the   Indemnitor's   indemnification
obligations  would  apply and shall  give the  Indemnitor  (acting  through  the
Representative  if Indemnitor is the Escrow Agent) a reasonable  opportunity  to
defend  the  same  or  prosecute   such  action  to   conclusion  or  settlement
satisfactory  to the  Indemnified  Party at  Indemnitor's  own  expense and with
counsel of Indemnitor's  selection (who shall be approved by Indemnified  Party,
which  approval  shall  not  be  unreasonably   withheld);   provided  that  the
Indemnified Party shall at all times also have the right to fully





     participate  in the defense at its own expense.  If the  Indemnitor  shall,
within a reasonable  time after said  notice,  fail to defend,  the  Indemnified
Party shall have the right, but not the obligation, to undertake the defense of,
and to compromise or settle (exercising  reasonable business judgment) the claim
or other  matter on  behalf,  for the  account,  and at the risk and  expense of
Indemnitor.  Except as provided in the preceding sentence, the Indemnified Party
shall not  compromise  or settle  the claim or other  matter  without  the prior
written consent of the Indemnitor. If the claim is one that cannot by its nature
be defended solely by the Indemnitor, the Indemnified Party shall make available
all  information  and assistance  that the  Indemnitor  may reasonably  request;
provided that any associated  expenses shall be paid by the  Indemnitor.  If the
Losses  relate to a Loss or demand  asserted by a third party,  the  Indemnified
Party and Indemnitor  shall jointly  control the defense and settlement  thereof
and any  settlement  shall  require the prior  written  consent of both parties,
which consent shall not be unreasonably withheld.

     10.3  Buyer's   Indemnification.   Buyer  agrees  to  indemnify   and  hold
Shareholders harmless from and against any and all Losses which may accrue or be
sustained  by  Shareholders  arising out of or as a result of (a) the conduct of
the  business or ownership of Lawrence or the  Surviving  Corporation  after the
Effective  Time, or (b) any of the warranties,  representations  or covenants of
Buyer contained in this Agreement being incorrect,  untrue or breached. The term
"Losses" for purposes of this Section 10.3 shall not include any loss  resulting
from a diminution  in the value of Buyer  Common  Stock  received in the Merger.
Buyer  also  agrees to  indemnify  and hold  Lamonte H.  Lawrence,  LSI and LSRL
harmless from and against any and all losses which may accrue or be sustained by
Lamonte  H.  Lawrence,  LSI  and/or  LSRL  arising  out of or as a result of the
parties'  inability to obtain the Releases of all of the Guarantees and a breach
by Lawrence of the guaranteed  obligation.  Notwithstanding  the  foregoing,  no
amount  will be paid  pursuant  to a written  claim  notice for  indemnification
pursuant  to  this  Section  10.3  (with  respect  to  either  a  liquidated  or
unliquidated  claim)  unless,  and then only to the extent that,  the  aggregate
amount of Losses sustained by Shareholders, Lamonte H. Lawrence, LSI, or LSRL as
a group  and as to  which  written  claim  notices  have  been  given  by any of
Shareholders,  Lamonte H. Lawrence, LSI and/or LSRL to Buyer exceeds Two Hundred
Fifty Thousand Dollars ($250,000).

     10.4 Contest;  Challenge. If Indemnitor contests or challenges any claim or
action asserted against  Indemnified Party referred to in this Article, it shall
do so at its own cost and expense,  holding  Indemnified Party harmless from all
costs, fees,  expenses,  debts,  liabilities and charges in connection with such
contest;  shall  diligently  defend  against  any such  claim;  and  shall  hold
Indemnified  Party's  business and assets free and harmless from any attachment,
execution, judgment, lien or other legal process.

  10.5 Special Indemnity.

     (a) By voting to  approve  this  Agreement  or by  surrendering  his or its
Certificate(s)  evidencing Lawrence Shares at Closing,  each Shareholder,  other
than  Shareholders  who have perfected  dissenter  rights under  applicable law,
severally  and not  jointly,  agrees to defend  and  indemnify  the  Indemnitees
against and hold each of them harmless from each  Shareholder's Pro Rata Portion
(defined  below) of any and all Losses which any such  Indemnitee  may suffer or
incur by reason  of the  inaccuracy  or  breach  of any of the  representations,
warranties  and covenants of Lawrence  contained in Section 5.13 or Section 5.15
of  this  Agreement  or any  documents,  certificates  or  agreements  delivered
pursuant hereto. The right of Indemnitees to indemnification  under this Section
10.5 shall apply only to those  claims for  indemnification,  notice of which is
given pursuant to this Agreement to the Shareholders on or before the running of
the applicable statute of limitations;  provided that such limitations shall not
apply to any claim  resulting  from fraud or intentional  misrepresentation.  As
used herein,  "Pro Rata Portion" shall mean with respect to each Shareholder his
or its  percentage  ownership of Lawrence after the merger of Lawrence and LSLMS
and immediately prior to the Effective Time.

     (b) Each Shareholder,  other than Shareholders who have perfected dissenter
rights under applicable law,  acknowledges and agrees that its obligations under
this Section 10.5 are recourse  obligations  enforceable  against it personally.
Each Shareholder waives any right to require  Indemnitees to (i) proceed against
any person or entity  including any other  Shareholder,  (ii) proceed against or
exhaust any  collateral  or security or any part  thereof,  or (iii)  pursue any
other  remedy in its  power,  and waives  any  defense  arising by reason of any
inability





     of any  other  obligor  to  pay  or any  defense  based  on  bankruptcy  or
insolvency or other similar  limitations on creditors'  remedies with respect to
any other person.  Indemnitees agree to use their reasonable  efforts to collect
any  Losses  from any  available  insurer  or  third  party  indemnitors  before
collecting from the Shareholders or the Escrow Fund, and to use their reasonable
efforts to collect from the Escrow Fund before collecting from the Shareholders;
however, nothing in the foregoing clauses shall preclude any claiming party from
filing a claim  against  either the  Shareholders  or the  Escrow  Fund from the
outset.  If any  amounts  are  recovered  from an insurer or third  party  after
payment  to an  Indemnitee  of all  Losses  suffered  or  incurred  by it,  such
Indemnitee shall promptly pay over to the  indemnifying  party the excess amount
so  recovered.  Any  claims  against  the  Escrow  Fund  shall be subject to the
procedures set forth in Section 10.2.

     (c)  Notwithstanding  anything to the contrary in this Article X, including
without limitation any provision of Section 10.2, the Representative  shall have
sole and  complete  power and  authority  (i) to settle any matter  which is the
subject of a claim for  indemnification  pursuant to this Section 10.5 which can
be settled  solely  with the  payment  of money  (ii) to conduct  and settle any
litigation which is the subject of a claim for indemnification  pursuant to this
Section 10.5 which can be settled solely with the payment of money, and (iii) to
control and direct, subject to Buyer's approval, which shall not be unreasonably
withheld or delayed,  any and all remediation or other clean-up or mitigation of
any environmental  condition which is the subject of a claim for indemnification
pursuant to this Section 10.5.

     10.6 Waiver. Each Shareholder irrevocably, knowingly and voluntarily waives
any  claim  which  such  Shareholder  now  has or  may  hereafter  have  against
Indemnitees,  the Escrow Fund, and any collateral or security  whatsoever now or
hereafter  held by  Indemnitees,  arising out of or  resulting  from  payment or
demand for payment of Losses, whether such claim is characterized as a claim for
contribution,  indemnification,  subrogation  or  otherwise;  provided  that the
foregoing shall not limit the  Shareholders'  ability to challenge the propriety
of any claim for Losses made by Indemnitee(s).

     10.7 Average Closing Price. To the extent that the Indemnitees make a claim
against the Escrow Fund pursuant to the Escrow Agreement, and such claim is paid
in shares of Buyer Common Stock,  then for purposes of such payment,  the shares
of Buyer Common Stock shall be valued at the Average Closing Price.

     10.8   Reduction   of   Losses.   The   amount  of  any  Losses  for  which
indemnification  is  provided  under  this  Article X shall be  reduced  to take
account of any net tax benefit  realized  arising from the incurrence or payment
of any such Losses or from the receipt of any such  indemnification  payment and
shall be reduced by the insurance  proceeds  received and any other  amount,  if
any,  recovered from third parties by an Indemnitee (or any of their  affiliated
entities) with respect to any Losses.  The Indemnified  Party shall be obligated
to use commercially reasonable efforts to prosecute diligently and in good faith
claims under any applicable insurance policies  (including,  without limitation,
any applicable  insurance policies  maintained by either of the Companies or the
Surviving  Corporation)  and against other third parties who may be  responsible
for  Losses  prior to  collecting  indemnification  for such  Losses  under this
Article X. If any Indemnitee (or any of their  affiliated  entities)  shall have
received  any payment  pursuant to this  Article X with  respect to any Loss and
shall  subsequently  have  received  insurance  proceeds or other  amounts  with
respect to such Loss,  then such  Indemnitee (or its affiliated  entities) shall
promptly  pay  over to the  Representative  (for  distribution  pro  rata to the
Shareholders) the amount so recovered but not in excess of the amount previously
so paid by the Shareholders.

     10.9 Remedies. The sole and exclusive remedy of any party to this Agreement
for any claim arising under this Agreement  against any other party hereto shall
be the indemnification provided in this Article X, and each party agrees that it
will not pursue any other  remedy,  except that either  party may seek  specific
performance or injunctive relief.





                                   ARTICLE XI

                               General Provisions

     11.1 Brokers. Lawrence represents and warrants to Buyer and Buyer Sub that,
except for Lawrence's  financial advisor,  Alex. Brown & Sons  Incorporated,  no
broker,  finder or financial  advisor is entitled to any brokerage,  finder's or
other fee or  commission  in  connection  with the  Merger  or the  transactions
contemplated by this Agreement based upon  arrangements  made by or on behalf of
Lawrence.  Buyer  represents and warrants to Lawrence that no broker,  finder or
financial  advisor  is  entitled  to any  brokerage,  finder's  or other  fee or
commission in connection  with the Merger or the  transactions  contemplated  by
this Agreement based upon arrangements made by or on behalf of Buyer.

     11.2  Notices.  All  notices,  claims,  demands  and  other  communications
hereunder shall be in writing and shall be deemed given if delivered  personally
or by facsimile or mailed by  registered  or certified  mail  (postage  prepaid,
return receipt requested) to the respective  parties at the following  addresses
(or at such other address for a party as shall be specified by like notice):

  (a) If to Lawrence, to:

    Lawrence Semiconductor Laboratories, Inc.
    2300 West Huntington Drive
    Tempe, Arizona 85282
    Attention: Lamonte H. Lawrence, President
    Facsimile Number: (602) 464-7421

  with a copy to:

    Polese, Pietzsch, Williams & Nolan, P.A.
    2702 North Third Street, Suite 3000
    Phoenix, Arizona 85004-4607
    Attention: Michael E. Pietzsch, Esq.
               Michael J. Tucker, Esq.
    Facsimile Number: (602) 279-5107

  (b) If to Buyer, or Buyer Sub or Holdings, to:

    Advanced Technology Materials, Inc.
    7 Commerce Drive
    Danbury, CT 06810
    Attention: Daniel P. Sharkey, VP
    Facsimile Number: (203) 792-8040

  with a copy to:

    Shipman & Goodwin LLP
    One American Row
    Hartford, CT 06103
    Attention: Frank J. Marco, Esq.
    Facsimile Number: (860) 251-5900

  and

  (c) If to the Representative, to:

    Lamonte H. Lawrence
    100 Sir Francis Drake Blvd.
    Ross, California 94957
    Facsimile Number: (415) 456-0949




  with a copy to:

    Polese, Pietzsch, Williams & Nolan, P.A.
    2702 North Third Street, Suite 3000
    Phoenix, Arizona 85004-4607
    Attention: Michael E. Pietzsch, Esq.
    Facsimile Number: (602) 279-5107

     All such  notices  shall be deemed  received  on the date of  delivery  (if
delivered personally or by facsimile) or on the date shown on the return receipt
(if delivered by mail).

     11.3 Descriptive Headings. The headings contained in this Agreement are for
reference  purposes  only  and  shall  not  affect  in any  way the  meaning  or
interpretation of this Agreement.

     11.4 Entire Agreement; Assignment. This Agreement (including the Schedules,
Exhibits and other documents and instruments referred to herein) constitutes the
entire agreement and supersedes all other prior  agreements and  understandings,
both  written and oral,  among the parties or any of them,  with  respect to the
subject  matter  hereof,  and  shall  not be  assigned  by  operation  of law or
otherwise.

     11.5 Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the laws of the State of New York without  giving effect to the
provisions thereof relating to conflicts of law.

     11.6  Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts,  each of which shall be deemed to be an original  but all of which
shall constitute one and the same agreement.

     11.7 Validity.  The invalidity or unenforceability of any provision of this
Agreement  shall  not  affect  the  validity  or  enforceability  of  any  other
provisions of this Agreement, which shall remain in full force and effect.

     11.8 Investigation.  The respective representations and warranties of Buyer
or Lawrence contained herein or in the certificates or other documents

     delivered  prior to the  Effective  Time  shall  not be  deemed  waived  or
otherwise affected by any investigation made by the other.

     11.9 Consents.  For purposes of any provision of this Agreement  requiring,
permitting or providing for the consent of any party, the written consent of the
Chief  Executive  Officer of such party shall be sufficient  to constitute  such
consent.

     11.10  Jurisdiction.  Each party  hereby  irrevocably:  (1) agrees that any
suit,  action, or other legal proceeding arising out of this Agreement or out of
any of the transactions  contemplated  hereby or thereby,  may be brought in any
New York court or United States federal court located in the County of New York;
(2) consents to the jurisdiction of each such court in any such suit, action, or
legal  proceeding;  (3)  waives any  objection  which such party may have to the
laying of venue of any such suit,  action,  or legal  proceeding  in any of such
courts; and (4) agrees that New York is the most convenient forum for litigation
of any such suit, action, or legal proceeding.





     IN WITNESS WHEREOF,  each of Buyer,  Buyer Sub and Lawrence has caused this
Agreement  to  be  executed  on  its  behalf  by  its  officers  thereunto  duly
authorized, all as of the date first above written.

Advanced Technology Materials, Inc.,
a Delaware corporation


By: /s/ Daniel P. Sharkey
- ---------------------------------
Name: Daniel P. Sharkey
Title: Vice President, Chief
Financial Officer

Welk Acquisition Corporation, a
Delaware corporation


By: /s/ Daniel P. Sharkey
- ---------------------------------
Name: Daniel P. Sharkey
Title: President

ATMI Holdings, Inc., a Delaware
corporation


By: /s/ Daniel P. Sharkey
- ---------------------------------
Name: Daniel P. Sharkey
Title: Treasurer

Lawrence Semiconductor Laboratories,
Inc., an Arizona corporation


By: /s/ Lamonte H. Lawrence
- ---------------------------------
Name: Lamonte H. Lawrence
Title: Chief Executive Officer

Lawrence Semiconductor Laboratories
Marketing and Sales, Inc., an
Arizona corporation


By: /s/ Lamonte H. Lawrence
- ---------------------------------
Name: Lamonte H. Lawrence
Title: Chief Executive Officer






                                    EXHIBITS


                                                
3.6(a)(xiii)-A
     Affiliate Agreement                              Section 3.6(a)(xiii)-A
3.6(a)(xiii)-B
     Employment Agreement                             Section 3.6(a)(xiii)-B
3.6(a)(x)
     Release                                          Section 3.6(a)(x)
3.6(e)
     Registration Rights Agreement                    Section 3.6(e)
A-1  Designated Employees                             Section 6.2
A-2  Staying Bonus and Severance Agreement            Section 6.2
B    Noncompete Agreement--Lamonte H. Lawrence        Section 7.8
C    Consulting Agreement--Lamonte H. Lawrence        Section 7.9
8.3(d)
     Proprietary Information and Inventions Agreement Section 8.3(d)
D    Escrow Agreement                                 Subsection 10.1(c)






                                    SCHEDULES



 SCHEDULE
  NUMBER  CONTENTS
 -------- --------
       
 4.1(c) Persons whose  knowledge  constitute the  "Knowledge" of Lawrence 4.2(c)
 Filings, permits, authorizations, consents and approvals required for
          Buyer  and/or  Buyer Sub to  consummate  transaction  4.2(h)  Material
 liabilities of Buyer 5.1 Trade names and assumed names
 5.2      Authorized  capital stock,  number and class of issued and outstanding
          stock,  identity of owners of capital  stock,  and  identity of anyone
          with a right to acquire any capital stock; pro forma following merger
 5.4      Filings, permits, authorizations, consents and approvals required for
          Lawrence to consummate transaction
 5.5      Material errors in Lawrence financial statements
 5.6      Material adverse changes and other specified information occurring
          since date of unaudited financial statement
 5.7      Litigation; expected litigation
 5.8(a)   Contracts and other instruments
 5.8(b) Consulting agreements and other contracts with certain provisions 5.9(a)
 Employee benefits programs 5.10(a) Known  non-compliance of products with laws,
 statutes,  etc.  5.10(b) Notices  received from regulatory  agencies  regarding
 possible
          violations, or facts that might lead to such
 5.10(c)  Facts that might lead to recall of products,  termination of marketing
          of products, etc.
 5.10(d)  Recalls of products
 5.11(a)  Patents, applications for patents, registration of trademarks, other
          intellectual property
 5.11(c) Nondisclosure  agreements to which Lawrence is a party or bound 5.11(d)
 Royalties, fees or other payments owed by reason of any intellectual
          property
 5.11(e)  Notices of infringement
 5.12(b)  Property agreements (leases, etc.)
 5.13(b)  Environmental notices received, existence of USTs, asbestos, etc.
 5.13(c)  Environmental incidents
 5.14     Notices of violations of city codes, condemnation actions, etc.
 5.15(a)  Tax information
 5.15(b)  Subsidiaries
 5.16     Product liability insurance claims
 5.17     Other material liabilities
 5.20     Mortgages, liens, etc.
 5.21     Debts
 5.22     Accounts Receivable
 5.25     Employee Names
 5.26     Related Parties; Transactions
 5.27     Hart-Scott-Rodino
 5.28     Customers
 5.30     Insurance; Unemployment insurance ratings
 7.6      Guarantees
 8.3(d)   Proprietary Information and Inventions Agreements


                                     EXHIBIT



     The  following  schedules and exhibits have been omitted from the Agreement
and Plan of Merger and  Exchange  attached  to this  registration  statement  as
Appendix  A  to  the  Proxy  Statement/Prospectus  and  incorporated  herein  by
reference:

                                    SCHEDULES


Schedule 4.1(c)
Persons whose knowledge constitute the "Knowledge" of Lawrence

Schedule 4.2(c)
Filings,  permits,  authorizations,  consents and  approvals  required for Buyer
and/or Buyer Sub to consummate transaction

Schedule 4.2(h)
Material liabilities of Buyer

Schedule 5.1
Trade names and assumed names

Schedule 5.2
Authorized  capital  stock,  number and class of issued and  outstanding  stock,
identity  of owners of capital  stock,  and  identity  of anyone with a right to
acquire any capital stock; pro forma following merger

Schedule 5.4
Filings, permits, authorizations, consents and approvals required
for Lawrence to consummate transaction

Schedule 5.5
Material errors in Lawrence financial statements

Schedule 5.6
Material adverse changes and other specified information occurring since date of
unaudited financial statement

Schedule 5.7
Litigation; expected litigation

Schedule 5.8(a)
Contracts and other instruments

Schedule 5.8(b)
Consulting agreements and other contracts with certain provisions

Schedule 5.9(a)
Employee benefits programs

Schedule 5.10(a)
Known non-compliance of products with laws, statutes, etc.

Schedule 5.10(b)
Notices received from regulatory  agencies  regarding  possible  violations,  or
facts that might lead to such

Schedule 5.10(c)
Facts  that  might  lead to recall of  products,  termination  of  marketing  of
products, etc.

Schedule 5.10(d)
Recalls of products

Schedule 5.11(a)
Patents, applications for patents, registration of trademarks, other
intellectual property

Schedule 5.11(c)
Nondisclosure agreements to which Lawrence is a party or bound

Schedule 5.11(d)
Royalties, fees or other payments owed by reason of any intellectual
property

Schedule 5.11(e)
Notices of infringement

Schedule 5.12(b) Property agreements (leases, etc.)

Schedule 5.13(b)
Environmental notices received, existence of USTs, asbestos, etc.

Schedule 5.13(c)
Environmental incidents

Schedule 5.14
Notices of violations of city codes, condemnation actions, etc.

Schedule 5.15(a)
Tax information

Schedule 5.15(b)
Subsidiaries

Schedule 5.16
Product liability insurance claims

Schedule 5.17
Other material liabilities

Schedule 5.20 Mortgages, liens, etc.

Schedule 5.21
Debts

Schedule 5.22
Accounts Receivable

Schedule 5.25
Employee Names

Schedule 5.26
Related Parties; Transactions

Schedule 5.27
Hart-Scott-Rodino

Schedule 5.28
Customers

Schedule 5.30
 Insurance; Unemployment insurance ratings

Schedule 7.6
Guarantees

Schedule 8.3(d)
Proprietary Information and Inventions Agreements

                                    EXHIBITS

Exhibit 3.6(a)(xiii)-A
 Affiliate Agreement

Exhibit 3.6(a)(xiii)-B
Employment Agreement

Exhibit  3.6(a)(x)
Release

Exhibit 3.6(e)
 Registration Rights Agreement

Exhibit A-1
Designated Employees

Exhibit A-2
Staying Bonus and Severance Agreement

Exhibit B
Noncompete Agreement -- Lamonte H. Lawrence

Exhibit C
Consulting Agreement -- Lamonte H. Lawrence

Exhibit 8.3(d)
Proprietary Information and Inventions Agreement

Exhibit D
Escrow Agreement


     The  Registrant  agrees to  furnish  supplementally  a copy of any  omitted
schedule or exhibit to the Securities and Exchange Commission upon request.