HELIX TECHNOLOGY CORP
8-K, 1998-05-15
SPECIAL INDUSTRY MACHINERY, NEC
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<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

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

          Date of Report (Date of earliest event reported): May 7, 1998

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

                                    DELAWARE
                 (State or other jurisdiction of incorporation)

                      0-6866                           04-2423640
              (Commission File No.)      (I.R.S. Employer Identification No.)

           Mansfield Corporate Center
                Nine Hampshire Street
              Mansfield, Massachusetts                 02048-9171
     (Address of Principal Executive Offices)          (Zip Code)

        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE (508) 337-5111

                                      N.A.

          (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)

ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.

On April 16, 1998,  Helix Technology  Corporation  (the  "Company"),  a Delaware
Corporation, signed an Agreement and Plan of Merger (the "Agreement") to acquire
all of the issued and outstanding shares of capital stock of  Granville-Phillips
Company ("Granville-Phillips"),  a Washington Corporation,  pursuant to a merger
of Helix  Acquisition  Corporation,  a Delaware  corporation  and  wholly  owned
subsidiary of the Company, with and into Granville-Phillips (the "Merger"), with
Granville-Phillips   becoming  the  surviving   corporation   and  wholly  owned
subsidiary   of  the  Company.   The  Merger  was  completed  on  May  7,  1998.
Granville-Phillips  is a Boulder,  Colorado based company  recognized as a world
class leader in the development and  manufacture of  instrumentation  for vacuum
measurement and control.  Granville-Phillips'  products are used  principally in
semiconductor, flat panel display, and disk drive manufacturing processes.

<PAGE>


ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS (Continued).


The terms of the  Agreement,  including  the merger  ratio,  were the results of
arm's length  negotiations  between Helix and  Granville-Phillips.  Helix issued
2,382,905 shares of common stock, par value $1.00 per share, to the stockholders
of  Granville-Phillips.  The  transaction  will be accounted for as a pooling of
interests.

Under the terms of the  Agreement,  an  aggregate  of 119,145  of the  Company's
shares of common  stock will be held in escrow with the purpose of  indemnifying
the  Company  against  certain   liabilities  of   Granville-Phillips   and  its
stockholders.  The escrow agreement expires on the earlier of (i) May 7, 1999 or
(ii) completion of the next audited financial statements of the Company.

The preceding discussion is only a summary and is qualified in its entirety,  by
reference to the  agreements,  copies of which are included as Exhibits 2.1, 2.2
and 2.3 to this Current Report on Form 8-K and are filed herewith.


ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

(a)    FINANCIAL STATEMENTS OF BUSINESS ACQUIRED

       Pursuant  to the  instructions  to  Item 7 of  Form  8-K,  the  financial
       information  required by Item 7(a) will be filed by  amendment  within 60
       days of the date of this filing.

(b)    PRO FORMA FINANCIAL INFORMATION

       Pursuant  to the  instructions  to  Item 7 of  Form  8-K,  the  financial
       information  required by Item 7(b) will be filed by  amendment  within 60
       days of the date of this filing.








                                     Page 2

<PAGE>


(c)    EXHIBITS

       2.1      Agreement  and Plan of Merger  dated as of April 16,  1998 among
                Helix Technology  Corporation,  Helix  Acquisition  Corporation,
                Granville-Phillips Company and Certain Principal Stockholders of
                Granville-Phillips   Company  Named  Herein.   Filed   herewith.
                Pursuant to Item 602(b)(2) of Regulation  S-K, the schedules and
                certain  exhibits  to the  Agreement  and  Plan  of  Merger  are
                omitted.  A list of such  schedules  and exhibits  appear in the
                table of  contents  to the  Agreement  and Plan of  Merger.  The
                Registrant hereby undertakes to furnish supplementally a copy of
                any omitted schedule or exhibit to the Commission upon request.

       2.2      Registration Rights Agreement dated May 7, 1998. Filed herewith.

       2.3      Escrow Agreement dated May 7, 1998. Filed herewith.

       3.1      Restated  Certificate of Incorporation  dated February 15, 1980,
                as amended  on May 5, 1987;  May 18,  1988;  April 20,  1995 and
                April 30, 1998. Filed herewith.


                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  and Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                             HELIX TECHNOLOGY CORPORATION



May 15, 1998                          BY:    /s/Michael El-Hillow
- --------------                               ----------------------------
Date                                         Michael El-Hillow
                                             Senior Vice President and
                                             Chief Financial Officer





                                     Page 3




                          AGREEMENT AND PLAN OF MERGER

                                      AMONG

                          HELIX TECHNOLOGY CORPORATION

                         HELIX ACQUISITION CORPORATION,

                          GRANVILLE - PHILLIPS COMPANY

                                       and

                         CERTAIN PRINCIPAL STOCKHOLDERS
                         OF GRANVILLE - PHILLIPS COMPANY
                                  NAMED HEREIN



                          -----------------------------
                           Dated as of April 16, 1998
                          -----------------------------










<PAGE>

                                TABLE OF CONTENTS

                                                                            Page

SECTION 1 - THE MERGER......................................................  1
         1.1        The Merger..............................................  1
         1.2        Effective Time..........................................  1
         1.3        Effects of the Merger...................................  1
         1.4        Articles of Incorporation and Bylaws....................  2
         1.5        Directors and Officers..................................  2
         1.6        Conversion of Stock.....................................  2
         1.7        Dissenting Shares.......................................  4
         1.8        Exchange of Certificates................................  4
         1.9        No Fractional Shares....................................  5
         1.10       Legends.................................................  5
         1.11       Escrow of Shares........................................  5
         1.12       No Liability............................................  6
         1.13       Closing of GPC Transfer Books...........................  6

SECTION 2 - REPRESENTATIONS AND WARRANTIES OF GPC...........................  6
         2.1        Organization and Qualification..........................  6
         2.2        Authority to Execute and Perform Agreements.............  6
         2.3        Capitalization and Title to Shares......................  7
         2.4        Subsidiaries and Other Affiliates.......................  7
         2.5        Financial Statements....................................  7
         2.6        Absence of Undisclosed Liabilities......................  8
         2.7        No Material Adverse Change..............................  8
         2.8        Tax Matters.............................................  9
         2.9        Compliance with Laws.................................... 10
         2.10       No Breach............................................... 10
         2.11       Actions and Proceedings................................. 11
         2.12       Contracts and Other Agreements.......................... 11
         2.13       Bank Accounts and Powers of Attorney.................... 12
         2.14       Properties.............................................. 13
         2.15       Intangible Property..................................... 13
         2.16       Real Property........................................... 13
         2.17       Customers............................................... 15
         2.18       Accounts Receivable..................................... 15
         2.19       Inventory............................................... 15
         2.20       Employee Benefit Plans.................................. 15
         2.21       Employee Relations...................................... 16
         2.22       Employment Matters...................................... 16
         2.23       Employee Conflicts...................................... 16
         2.24       Transactions with Management............................ 17
         2.25       Insurance............................................... 17
         2.26       Brokerage............................................... 17
         2.27       Environmental Matters................................... 17
         2.28       Year 2000 Compliance.................................... 18
         2.29       Disclosure.............................................. 18
<PAGE>

SECTION 3 - REPRESENTATIONS AND WARRANTIES OF THE PRINCIPAL STOCKHOLDERS.... 19
         3.1        Authority to Execute and Perform Agreements............. 19
         3.2        No Breach............................................... 19
         3.3        Title to Shares......................................... 19
         3.4        Accuracy of GPC Representations and Warranties.......... 19

SECTION 4 - REPRESENTATIONS AND WARRANTIES OF
HELIX AND ACQUISITION....................................................... 20
         4.1        Organization............................................ 20
         4.2        Authority to Execute and Perform Agreement.............. 20
         4.3        Capitalization.......................................... 20
         4.4        SEC Reports............................................. 20
         4.5        Financial Statements.................................... 21
         4.6        No Material Adverse Change.............................. 21
         4.7        Actions and Proceedings................................. 21
         4.8        No Breach............................................... 21

SECTION 5 - COVENANTS AND AGREEMENTS........................................ 22
         5.1        Conduct of Business..................................... 22
         5.2        Corporate Examinations and Investigations............... 23
         5.3        Taxes................................................... 24
         5.4        Expenses................................................ 24
         5.5        Authorization from Others............................... 24
         5.6        Consummation of Agreement............................... 24
         5.7        Public Announcements and Confidentiality................ 24
         5.8        No Solicitation......................................... 25
         5.9        Filings Under HSR Act................................... 25
         5.10       Stockholder Letter...................................... 25
         5.11       Voting of GPC Stock..................................... 25
         5.12       Noncompetition Agreements............................... 25
         5.13       Patent and Confidential Information Agreements.......... 26
         5.14       Incentive Plans Termination and Release................. 26
         5.15       Helix SEC Filings....................................... 26
         5.16       Publishing of Combined Financial Results................ 26
         5.17       Form S-3 Registration................................... 26
         5.18       Disclosure Statements................................... 26
         5.19       Further Assurances...................................... 27

SECTION 6 - CONDITIONS PRECEDENT TO THE OBLIGATIONS
OF EACH PARTY TO CONSUMMATE THE MERGER...................................... 27
         6.1        Approvals............................................... 27
         6.2        HSR Act................................................. 27
         6.3        Absence of Order........................................ 27

SECTION 7 - CONDITIONS PRECEDENT TO THE OBLIGATIONS OF
HELIX AND ACQUISITION TO CONSUMMATE THE MERGER.............................. 27
         7.1        Representations, Warranties and Covenants............... 27
         7.2        Opinion of Counsel to GPC............................... 27
         7.3        Merger Documents........................................ 27
         7.4        Dissenting Shares....................................... 27
         7.5        Tax Opinion............................................. 28
         7.6        Pooling of Interest Opinions............................ 28
         7.7        Title Insurance......................................... 28
         7.8        Escrow Agreement........................................ 28
         7.9        Stockholder Letters..................................... 28
         7.10       Noncompetition Agreements............................... 28
         7.11       Patent and Confidential Information Agreements.......... 28
         7.12       Incentive Plans Termination and Release................. 28
         7.13       Officer's Certificate................................... 29
         7.14       Secretary's Certificate................................. 29
         7.15       Additional Items........................................ 29
<PAGE>

SECTION 8 - CONDITIONS PRECEDENT TO THE OBLIGATION OF THE
GPC AND THE PRINCIPAL STOCKHOLDERS TO CONSUMMATE THE MERGER................. 29
         8.1        Representations, Warranties and Covenants............... 29
         8.2        Officer's Certificate................................... 29
         8.3        Opinion of Counsel to Helix............................. 29
         8.4        Tax Opinion............................................. 29
         8.5        Registration Rights Agreement........................... 30

SECTION 9 - TERMINATION, AMENDMENT AND WAIVER............................... 30
         9.1        Termination............................................. 30
         9.2        Effect of Termination................................... 31
         9.3        Amendment............................................... 31
         9.4        Waiver.................................................. 31

SECTION 10 - INDEMNIFICATION................................................ 31
         10.1       Survival................................................ 31
         10.2       Obligation of GPC and the Stockholders to Indemnify..... 32
         10.3       Obligation of Helix and Acquisition to Indemnify........ 32
         10.4       Limitations on Indemnification.......................... 32
         10.5       Notice and Defense of Claims............................ 33

SECTION 11 - MISCELLANEOUS.................................................. 34
         11.1       Notices................................................. 34
         11.2       Entire Agreement........................................ 35
         11.3       Governing Law........................................... 35
         11.4       Binding Effect; No Assignment........................... 35
         11.5       Variations in Pronouns.................................. 35
         11.6       Counterparts............................................ 35
         11.7       Disclosure Schedules.................................... 35
         11.8       Arbitration............................................. 35
<PAGE>

                                      ANNEX

Annex A              --    Amended and Restated Articles of Incorporation of  
                           Granville-Phillips
Company

                                    EXHIBITS

Exhibit A            --    Form of Escrow Agreement
Exhibit B            --    Form of Stockholder Letter
Exhibit C            --    Form of Stockholder Voting Agreement
Exhibit D            --    Form of Irrevocable Proxy
Exhibit E-1          --    Form of Non-Disclosure, Non-Competition and
                           Developments Agreement
Exhibit E2           --    Form of Non-Disclosure, Non-Competition and
                           Developments Agreement
Exhibit F            --    Form of Patent and Confidential Information Agreement
Exhibit G            --    Form of Registration Rights Agreement

                                    SCHEDULES

Schedule 1.6(d)      --   Shares Deemed Outstanding
Schedule 2.3         --   Capitalization and Title to Shares
Schedule 2.9         --   Compliance with Laws
Schedule 2.12        --   Contracts and Other Agreements
Schedule 2.13        --   Bank Accounts and Powers of Attorney
Schedule 2.16        --   Real Property
Schedule 2.17        --   Customers
Schedule 2.20        --   Employee Benefit Plans
Schedule 2.21        --   Employee Relations
Schedule 2.25        --   Insurance
Schedule 5.11        --   Individuals Executing Stockholder Voting Agreements
                          and Irrevocable Proxies
Schedule 5.12        --   Stockholders Executing Stockholder Noncompetition 
                          Agreements and Employee Noncompetition Agreements
Schedule 5.13        --   Patent and Confidential Information Agreements


<PAGE>
                          AGREEMENT AND PLAN OF MERGER



         THIS  AGREEMENT  AND PLAN OF MERGER  dated as of April 16,  1998  (this
"Agreement")  is  among  Helix  Technology  Corporation  ("Helix"),  a  Delaware
corporation;   Helix  Acquisition  Corporation  ("Acquisition"),   a  Washington
corporation and  wholly-owned  subsidiary of Helix;  Granville-Phillips  Company
("GPC"), a Washington corporation; and the stockholders of GPC identified on the
signature  pages  hereto (the  "Principal  Stockholders").  The parties  wish to
effect the acquisition of GPC by Helix through a merger of Acquisition  into GPC
on the terms and conditions hereof.  This Agreement is intended to be a "plan of
reorganization"  within the meaning of ss.368(a) of the Internal Revenue Code of
1986, as amended (the "Code").

         Accordingly, in consideration of the mutual representations, warranties
and covenants contained herein, the parties hereto agree as follows:


                             SECTION 1 - THE MERGER

         1.1 The Merger.  Upon the terms and subject to the  conditions  hereof,
and in accordance with the Washington  Business  Corporation Act of the State of
Washington  (the  "WBCA"),  Acquisition  shall be merged  with and into GPC (the
"Merger").  The Merger shall occur at the  Effective  Time (as defined  herein).
Following  the Merger,  GPC shall  continue as the  surviving  corporation  (the
"Surviving  Corporation")  and be a  wholly-owned  subsidiary of Helix,  and the
separate corporate existence of Acquisition shall cease.

         1.2 Effective Time. As soon as practicable after satisfaction or waiver
of all conditions to the Merger, the parties shall cause a certificate of merger
(the "Merger  Certificate") to be filed and recorded in Washington in accordance
with Section  23B.11.050 of the WBCA and shall take all such further  actions as
may be  required  by law to make  the  Merger  effective.  The  Merger  shall be
effective at such time as the Merger  Certificate is filed with the Secretary of
State of  Washington  in  accordance  with the WBCA or at such  later time as is
specified in the Merger Certificate (the "Effective Time"). Immediately prior to
the filing of the Merger Certificate,  a closing (the "Closing") will be held at
the offices of Palmer & Dodge LLP, One Beacon Street, Boston, MA 02108, (or such
other place as the parties may agree) for the purpose of confirming satisfaction
or waiver of all  conditions to the Merger.  The Closing shall take place within
three  business  days  after the last  occurrence  of: (a) the day the Merger is
approved  by the  stockholders  of  GPC;  or  (b)  the  date  of  expiration  or
termination of any waiting period or extension thereof  applicable to the Merger
under the Hart-Scott-Rodino  Antitrust Improvements Act of 1976, as amended (the
"HSR Act");  or such other date as the parties may agree.  The date on which the
Closing occurs is referred to herein as the "Closing Date".

         1.3 Effects of the Merger.  The Merger shall have the effects set forth
in Section 23B.11.060 of the WBCA.

         1.4 Articles of Incorporation and Bylaws. The Articles of Incorporation
of GPC in effect  immediately  prior to the Effective  Time shall be amended and
restated as set forth in Annex A attached hereto immediately after the Effective
Time and the Bylaws of Acquisition in effect  immediately prior to the Effective
Time  shall be the Bylaws of the  Surviving  Corporation  immediately  after the
Effective Time.
<PAGE>

         1.5 Directors and Officers.  The directors and officers of  Acquisition
immediately  prior to the Effective  Time shall be the directors and officers of
the Surviving  Corporation  immediately  after the Effective  Time, each to hold
office in accordance  with the  Certificate of  Incorporation  and Bylaws of the
Surviving  Corporation.  The  Surviving  Corporation  may  designate  such other
officers as it determines.

         1.6      Conversion of Stock.

                  (a) At the Effective Time, by virtue of the Merger and without
any action on the part of Helix, Acquisition or GPC:

                           (i) All shares of GPC Series A Common  Stock,  no par
value, and Series B Common Stock, no par value  (collectively,  the "GPC Stock")
outstanding or deemed outstanding immediately prior to the Effective Time, other
than (A) shares  held by GPC as  treasury  stock and (B)  Dissenting  Shares (as
defined  in  Section  1.7),  shall be  converted  into and  become  the right to
receive,  in the aggregate,  that number of shares  (rounded down and subject to
the payment of cash for fractional  shares as provided in Section 1.9) of common
stock, $1.00 par value, of Helix ("Helix Common Stock")  determined  pursuant to
Section 1.6(b) (such shares of Helix Common Stock are referred to hereinafter as
the "Merger  Consideration").  The Merger  Consideration shall be reduced by the
consideration  that would  otherwise be allocable  pursuant to Section 1.6(c) to
all Dissenting  Shares if the holders thereof had not properly  exercised rights
under Chapter 23B.13 of the WBCA.  Shares of GPC Stock deemed  outstanding shall
include  all shares of GPC Stock  issuable  pursuant to any  options,  warrants,
rights,  calls,  convertible  securities,   commitments,   agreements  or  other
arrangements of any character to which GPC is a party or by which it is bound.

                           (ii) All  shares of GPC Stock  held at the  Effective
Time by GPC as treasury  stock shall be  canceled  and no payment  shall be made
with respect thereto.

                           (iii)  All  Dissenting  Shares  shall be  handled  in
accordance  with  Section 1.7.

                           (iv)  Each share of common   stock  of   Acquisition,
$.01 par value,  outstanding  immediately  prior to the Effective  Time shall be
converted into and become one validly issued, fully paid and nonassessable share
of common stock, $.01 par value, of the Surviving Corporation.

                  (b) The number of shares of Helix  Common  Stock  constituting
the Merger  Consideration shall be two million five hundred thousand (2,500,000)
shares,  less the Closing Balance Sheet Adjustment  (referred to below) and less
the number of shares of Helix Common Stock  resulting  from the  Incentive  Plan
Adjustment (referred to below):
<PAGE>

                           (i) The amount, if any, by which the net worth of GPC
immediately  prior  to  the  Effective  Time  is  less  than  $10,648,547  shall
constitute  an  adjustment to the Merger  Consideration,  such  adjustment to be
effected by  withdrawing  from the escrow  established  under  Section 1.11 that
number of shares of Helix Common Stock (valued at $20.00 per share,  the "Market
Value")  equal  in  value  to  such  difference  (the  "Closing   Balance  Sheet
Adjustment").  For  purposes  of  this  determination,  the  net  worth  of  GPC
immediately  prior to the Effective Time shall mean the total assets of GPC less
its  total  liabilities   (including  without  limitation  the  accrual  of  all
distributions on or before the Closing for tax payments (including all taxes due
on  the  earnings  realized  through  the  Closing)  and  all  expenses  of  the
transaction and any severance or change of control  payments payable as a result
of the Merger) as shown on a balance  sheet of GPC as of such time (the "Closing
Balance Sheet") prepared in accordance with GAAP applied in a consistent  manner
and  in the  ordinary  course  of  business  as  per  the  prior  GPC  Financial
Statements,  with no acceleration of revenue or delay of expenses, as such terms
are defined in Section  2.5. GPC shall  prepare and furnish the Closing  Balance
Sheet to Helix within five  business  days after the Closing  Date,  which shall
become  final and binding 20 business  days after  receipt by Helix unless Helix
delivers  its written  objection  to the  Shareholder  Representative  under the
Escrow Agreement,  in the form attached hereto as Exhibit A, within such period.
Helix and the Shareholder  Representative shall attempt in good faith to resolve
any such  objection.  Any  objection  not so  resolved  within ten days shall be
resolved by a  nationally  recognized  firm of  independent  public  accountants
(which  has not been  engaged  to serve  Helix or GPC  within  the  prior  year)
selected  by Helix in good  faith.  The fees and  expenses of such firm shall be
paid by Helix, and the determination of such firm shall be final and binding.

                           (ii)  Immediately  following  the  execution  of this
Agreement,  Helix and GPC shall  retain a third party  independent  compensation
consultant  mutually  acceptable  to them to  calculate  the  equivalent  value,
expressed in shares of GPC vested stock, of the  outstanding  shares of unvested
GPC Stock issued under GPC's  Management and Key Employee  Incentive  Plans (the
"Incentive  Plans").  The  consultant  shall  provide  Helix  and GPC  with  its
calculation  as soon as reasonably  practicable.  In  determining  the number of
vested shares of equivalent  value,  the  consultant  shall consider among other
relevant  value  criteria:  the risk  associated  with not achieving the hurdles
established  for each  Incentive  Plan and the extent to which such  hurdles for
1998 and 1999 have already been met; the probability of the  participants in the
Incentive  Plans leaving GPC's  employment  prior to their shares  vesting;  the
value of earlier vesting; and the fact that the shares of different participants
would  become  vested  at  different  times.  Subject  to the  consent  of  each
participant in the Incentive  Plans,  the exchange of all unvested  shares under
his or her Incentive Plan for vested shares of equivalent  value shall be deemed
to occur  immediately  prior  to the  Effective  Time at  which  time his or her
Incentive Plan shall terminate.  The difference  between the aggregate number of
unvested  shares  exchanged and the aggregate  number of vested shares  received
shall be referred to herein as the "Incentive Plan Adjustment."

                  (c) The  Merger  Consideration  shall be  allocated  among the
holders of shares of GPC Stock  outstanding  immediately  prior to the Effective
Time by  multiplying  the number of shares of GPC Stock held by each such holder
by the Conversion Ratio.
<PAGE>

                  (d) The "Conversion Ratio" shall be determined in two steps by
first  determining  the  quotient  obtained by dividing (i) the two million five
hundred  thousand  (2,500,000)  shares of Helix  Common  Stock less the  Closing
Balance Sheet  Adjustment by (ii) the number of shares of GPC Stock  outstanding
and deemed outstanding (listed on Schedule 1.6(d)),  including all shares of GPC
Stock  outstanding  under  the  Incentive  Plans  prior  to the  Incentive  Plan
Adjustment.  This  quotient  shall then be multiplied  times the Incentive  Plan
Adjustment  in order to determine  the number of shares of Helix Common Stock to
be subtracted from said Two Million Five Hundred Thousand  (2,500,000) shares of
Helix Common Stock in the calculation of the "Conversion Ratio". The "Conversion
Ratio"  shall,  therefore,  mean the  quotient  obtained by dividing (i) the two
million five hundred thousand (2,500,000) shares of Helix Common Stock less both
the  Closing  Balance  Sheet  Adjustment  and less the number of shares of Helix
Common Stock resulting from the Incentive Plan Adjustment calculated as provided
in the  preceding  two  sentences  by (ii) the  number  of  shares  of GPC Stock
outstanding  and  deemed  outstanding  (listed  on  Schedule  1.6(d)),  less the
Incentive Plan Adjustment.

         1.7      Dissenting Shares.

                  (a) Shares of capital stock of GPC held by a  stockholder  who
has properly  exercised  dissenters'  rights with respect  thereto in accordance
with Chapter 23B.13 of the WBCA  (collectively,  the "Dissenting  Shares") shall
not be converted into Merger Consideration. From and after the Effective Time, a
stockholder who has properly  exercised such dissenters'  rights shall no longer
retain any rights of a stockholder of GPC or the Surviving  Corporation,  except
those provided under the WBCA.

                  (b) GPC (i) shall  give  Helix  prompt  notice of any  written
demands under  Chapter  23B.13 of the WBCA with respect to any shares of capital
stock of GPC,  any  withdrawal  of any such  demands  and any other  instruments
served  pursuant to the WBCA and received by GPC and (ii) hereby grants to Helix
the right to participate in all negotiations and proceedings with respect to any
demands under Chapter 23B.13 with respect to any shares of capital stock of GPC.
GPC shall cooperate with Helix concerning,  and shall not, except with the prior
written consent of Helix, voluntarily make any payment with respect to, or offer
to settle or settle, any such demands.

         1.8 Exchange of Certificates. Helix shall authorize one or more persons
to  act  as  Exchange  Agent  hereunder  (the  "Exchange  Agent").  As  soon  as
practicable  after the Effective  Time,  Helix shall cause the Exchange Agent to
mail to all former holders of record of GPC Stock  instructions for surrendering
their  certificates  representing  GPC Stock in exchange  for a  certificate  or
certificates representing shares of Helix Common Stock. Provided that the holder
of GPC  Stock has  executed  a  Stockholder  Letter  (as  defined  below),  upon
surrender of a GPC Stock  certificate for  cancellation to the Exchange Agent or
to such other agent or agents as may be appointed  by Helix,  the holder of such
certificate  shall be entitled to receive in exchange  therefor  (subject to the
escrow deposit required by Section 1.11) a certificate  representing that number
of whole  shares  of Helix  Common  Stock  into  which  the  shares of GPC Stock
theretofore  represented  by the  certificate  so  surrendered  shall  have been
converted  pursuant to the provisions of this Agreement,  and the certificate so
surrendered  shall forthwith be canceled.  Until  surrendered in accordance with
the provisions of this Section 1.8, each GPC Stock certificate  (other than each

<PAGE>

certificate for shares to be canceled in accordance with Section  1.6(a)(ii) and
each certificate for Dissenting Shares, if any) shall represent for all purposes
shares of Helix Common  Stock.  Helix Common Stock into which GPC Stock shall be
converted  in the Merger  shall be deemed to have been  issued at the  Effective
Time.  If any Helix Common Stock  certificates  are to be issued in a name other
than that in which GPC Stock certificate surrendered is registered,  it shall be
a condition of such exchange  that the person  requesting  such  exchange  shall
deliver to the  Exchange  Agent all  documents  necessary to evidence and effect
such  transfer and shall pay to the  Exchange  Agent any transfer or other taxes
required  by reason of the  issuance  of  certificates  for such shares of Helix
Common  Stock in such  different  name unless such person can  establish  to the
satisfaction  of the  Exchange  Agent  that  such  tax has  been  paid or is not
applicable.  Signatures on each letter of transmittal effecting a transfer shall
be guaranteed.

         1.9 No  Fractional  Shares.  No  certificates  representing  fractional
shares of Helix Common Stock shall be issued,  either for delivery to the holder
or to escrow.  No fractional  interest shall entitle the owner to vote or to any
rights of a security holder. In lieu of fractional shares, each holder of shares
of GPC Stock who would  otherwise  have been  entitled to a fractional  share of
Helix Common Stock, will receive an amount in cash (without interest) determined
by multiplying the applicable fraction by the Market Value of one share of Helix
Common Stock.

         1.10  Legends.  The  shares of Helix  Common  Stock to be issued in the
Merger shall be  characterized  as "restricted  securities" for purposes of Rule
144 under the Securities Act of 1933, and each  certificate  representing any of
such shares shall bear a legend  identical or similar in effect to the following
legend  (together with any other legend or legends  required by applicable state
securities laws or otherwise):

                  THE  SECURITIES  REPRESENTED  HEREBY HAVE NOT BEEN  REGISTERED
                  UNDER THE  SECURITIES  ACT OF 1933,  AS AMENDED,  OR ANY STATE
                  SECURITIES LAW, AND MAY NOT BE OFFERED,  SOLD,  TRANSFERRED OR
                  OTHERWISE  DISPOSED OF UNLESS  REGISTERED UNDER THE SECURITIES
                  ACT OF 1933, AS AMENDED,  AND ANY APPLICABLE  STATE SECURITIES
                  LAWS,  OR AN EXEMPTION  FROM SUCH  REGISTRATION  IS AVAILABLE.
                  THESE  SECURITIES ARE ALSO SUBJECT TO CERTAIN  RESTRICTIONS ON
                  TRANSFER SET FORTH IN A STOCKHOLDER  LETTER AGREEMENT WITH THE
                  CORPORATION,  A  COPY  OF  WHICH  CAN  BE  OBTAINED  FROM  THE
                  CORPORATION AT ITS EXECUTIVE OFFICES.

         1.11 Escrow of Shares.  At the Effective Time,  Helix shall deposit two
hundred twenty-five  thousand (225,000) shares of the Merger  Consideration with
an escrow agent reasonably  satisfactory to GPC to be held and disbursed by such
agent in accordance with the form of escrow agreement attached hereto as Exhibit
A (the  "Escrow  Agreement").  Shares held under the Escrow  Agreement  shall be
deducted pro rata from the shares allocable to each stockholder of GPC.

         1.12  No  Liability.   Notwithstanding  any  other  provision  of  this
Agreement,  neither the Exchange Agent, Helix or the Surviving Corporation shall
be liable for any amount paid to a public  official  pursuant to any  applicable
abandoned property, escheat or similar law.

         1.13 Closing of GPC Transfer  Books.  At the Effective  Time, the stock
transfer  books of GPC  shall be  closed  and no  transfer  of GPC  Stock  shall
thereafter be made.  If, after the  Effective  Time,  certificates  representing
shares of GPC Stock are  presented to the Surviving  Corporation,  they shall be
canceled and exchanged for certificates representing Helix Common Stock.
<PAGE>


                SECTION 2 - REPRESENTATIONS AND WARRANTIES OF GPC

         Except as set forth on the  disclosure  schedule  delivered to Helix on
the date hereof (the "GPC  Disclosure  Schedule"),  the section numbers of which
are numbered to  correspond  to the section  numbers of this  Agreement to which
they refer,  GPC represents  and warrants to Helix and  Acquisition as set forth
below:

         2.1      Organization and Qualification.

                  (a) GPC is a corporation duly organized,  validly existing and
in good standing  under the laws of  Washington  with full  corporate  power and
authority to own,  lease and operate its assets and  properties  and to carry on
its  business as now being and as  heretofore  conducted.  GPC is  qualified  or
otherwise  authorized  to  transact  business  as a foreign  corporation  in all
jurisdictions  in which such  qualification or authorization is required by law,
except for  jurisdictions  in which the failure to be so qualified or authorized
would not have a Material  Adverse Effect on the assets,  properties,  business,
prospects,  results of  operations  or  financial  condition  of GPC  ("Material
Adverse Effect").

                  (b) GPC has  previously  provided  to Helix true and  complete
copies of the charter and bylaws of GPC as presently  in effect,  and GPC is not
in  default  in  any  material  respect  in  the  performance,   observation  or
fulfillment of its charter or bylaws or other governing instruments.  The minute
books of GPC contain true and  complete  records of all meetings and consents in
lieu of meetings of the Board of Directors (and any  committees  thereof) and of
the stockholders since the time of GPC's incorporation and accurately reflect in
all material respects all transactions  referred to in such minutes and consents
in lieu of meetings. The stock books of GPC are true and complete.

         2.2 Authority to Execute and Perform Agreements.  GPC has the corporate
power and  authority  to enter into,  execute and deliver  this  Agreement  and,
subject to the  approval of this  Agreement  by GPC's  stockholders,  to perform
fully its  obligations  hereunder.  The execution and delivery of this Agreement
and the  consummation  of the  transactions  contemplated  hereby have been duly
authorized  by the Board of Directors of GPC. No action on the part of GPC other
than  approval  by the  stockholders  of  GPC is  necessary  to  consummate  the
transactions  contemplated  hereby.  This  Agreement  has been duly executed and
delivered by GPC and, subject to the foregoing,  constitutes a valid and binding
obligation of GPC, enforceable in accordance with its terms.

         2.3      Capitalization and Title to Shares.

                  (a) GPC is  authorized  to issue  1,000,000  shares  of Common
Stock, no par value,  divided into two series: (i) Series A Common Stock, no par
value,  of which 250,000 shares are authorized and 110,689 shares are issued and
outstanding  and (ii)  Series B Common  Stock,  no par value,  of which  750,000
shares are authorized and 664,134 shares are issued and outstanding. Such shares
are owned of  record  by the  persons  and in the  amounts  set forth on the GPC
Disclosure  Schedule.  No other class of capital  stock of GPC is  authorized or
outstanding. All of the issued and outstanding shares of GPC's capital stock are
duly authorized and are validly issued,  fully paid,  nonassessable  and free of
preemptive  rights.  None of the issued and outstanding  shares of GPC have been
issued in  violation  of any  federal or state law or any  preemptive  rights or
rights to subscribe for or purchase securities.
<PAGE>

                  (b) GPC has no outstanding  rights,  subscriptions,  warrants,
calls, preemptive rights, options or other agreements of any kind to purchase or
otherwise receive from GPC any shares of the capital stock or any other security
of  GPC,  or  any  outstanding  securities  of  any  kind  convertible  into  or
exchangeable for such securities.  There are no shareholder  agreements,  voting
trusts, proxies or other agreements,  instruments or understandings with respect
to the outstanding shares of capital stock of GPC to which GPC is a party.

                  (c) GPC does not own  beneficially any shares of capital stock
of Helix.

         2.4      Subsidiaries and Other Affiliates.

                  (a) GPC  has no  Subsidiaries.  As  used  in  this  Agreement,
"Subsidiary"  means any  corporation  or other legal  entity of which GPC or any
Subsidiary owns,  directly or indirectly,  50% percent or more of such entities,
stock or other equity interests.

                  (b) GPC  does  not  directly  or  indirectly  own or have  any
investment in the capital stock or other equity  interest of, and is not a party
to a partnership or joint venture with, any other person.

         2.5 Financial  Statements.  GPC has  previously  delivered to Helix the
audited  financial  statements of GPC for the year ended  December 31, 1997 (the
"Audited  Financial  Statements") and for the two preceding years (including the
footnotes  thereto,  balance sheets,  related  statements of operations and cash
flows for the periods then ended). All of such financial  statements referred to
in this  section  are  collectively  referred  to herein  as the "GPC  Financial
Statements."  GPC  Financial  Statements  are true and  correct in all  material
respects, and have been prepared from, and are in accordance with, the books and
records of GPC and  present  fairly the  financial  position  and the results of
operations of GPC as of the dates and for the periods indicated, in each case in
accordance with generally accepted accounting  principles ("GAAP")  consistently
applied throughout the periods involved.

         2.6 Absence of  Undisclosed  Liabilities.  As of December 31, 1997, GPC
had no material liabilities of any nature, whether accrued, absolute, contingent
or  otherwise  (including,  without  limitation,  liabilities  as  guarantor  or
otherwise with respect to obligations of others or liabilities  for taxes due or
then  accrued or to become  due),  required to be  reflected or disclosed in the
December 31, 1997 balance sheet (the "Audited  Balance  Sheet")  included in the
Audited  Financial  Statements  that were not  adequately  reflected or reserved
against  on  such  balance  sheet.  GPC  has  no  such  liabilities  other  than
liabilities (i) adequately  reflected or reserved against on the Audited Balance
Sheet included in the Audited Financial Statements, (ii) incurred since December
31, 1997 in the ordinary  course of business,  (iii) disclosed in this Agreement
or the GPC Disclosure Schedule or (iv) that could not, in the aggregate,  have a
Material Adverse Effect on the Business of GPC.

         2.7 No  Material  Adverse  Change.  Except for  changes in the  general
business of GPC that are public  knowledge or as set forth on the GPC Disclosure
Schedule, since December 31, 1997, there has not been:
<PAGE>

                  (a) any event or circumstance having a Material Adverse Effect
with respect to GPC or any material adverse change in the business of GPC;

                  (b) any transaction, commitment, contract or agreement entered
into by GPC or any relinquishment by GPC of any contract or other right having a
value of or involving aggregate payments in excess of $50,000;

                  (c) any  redemption or other  acquisition of any capital stock
of GPC or  any  declaration,  setting  aside,  or  payment  of any  dividend  or
distribution  of any kind with  respect to any  shares of  capital  stock of GPC
(except as provided in Section 5.3);

                  (d) any  increase  in  compensation,  bonus or other  benefits
payable  or to  become  payable  by GPC to any  of its  directors,  officers  or
employees,  other than regularly  scheduled  increases in the ordinary course of
business;

                  (e) any entering into or granting by GPC of any new employment
agreement  providing  for annual  compensation  over  $50,000,  any new employee
benefit, deferred compensation or other similar employee benefit arrangement, or
any new consulting  arrangement  providing for annual  compensation over $50,000
and any grant of any severance or termination rights to any director, officer or
employee of GPC or any increase in benefits payable under existing  severance or
termination pay policies or employment agreements;

                  (f)      any  change  in  any  accounting  method  or practice
followed by GPC;

                  (g)  any  making  by  GPC  of  any  loan  or  advance  to  any
stockholder,  officer,  director or  consultant or any affiliate or associate of
any of the foregoing (other than expense advances made in the ordinary course of
business), or any other loan or advance otherwise than in the ordinary course of
business;

                  (h) except for inventory or equipment acquired in the ordinary
course of  business,  any  acquisition  by GPC of all or any part of the assets,
properties, capital stock or business of any other person;

                  (i) any  destruction  of,  damage  to or  loss  of any  assets
material to the Business of GPC (whether or not covered by insurance);

                  (j)      labor trouble or claim of wrongful discharge or other
unlawful labor practice or action;

                  (k)      any litigation commenced by or against GPC;

                  (l)  except  in the  ordinary  course of  business,  any sale,
abandonment or any other disposition of any of GPC's assets or properties; or

                  (m) any commitment,  understanding  or agreement by GPC or any
of its directors, officers or employees to do any of the things described in the
preceding clauses (a) through (l).
<PAGE>

         2.8      Tax Matters

                  (a) Except as set forth on the GPC  Disclosure  Schedule,  GPC
has filed all tax  reports  and  returns  required to be filed by it and paid or
will  timely pay all taxes and other  charges  shown as due on such  reports and
returns.  GPC is not delinquent in the payment of any material tax assessment or
other governmental charge (including without limitation  applicable  withholding
taxes). Any provision for taxes reflected in the Audited Financial Statements is
adequate  for payment of any and all tax  liabilities  for periods  ending on or
before  December 31, 1997 and there are no tax liens on any assets of GPC except
liens for current taxes not yet due.

                  (b) Except as set forth on the GPC Disclosure Schedule,  there
has not been any audit of any tax  return  filed by GPC and no audit of any such
tax return is in progress  and GPC has not been  notified  by any tax  authority
that any such audit is contemplated  or pending.  GPC knows of no tax deficiency
or claim for additional  taxes asserted or threatened to be asserted  against it
by any taxing  authority  and GPC knows of no grounds  for any such  assessment.
Except as set forth on the GPC  Disclosure  Schedule,  no extension of time with
respect  to any  date on which a tax  return  was or is to be filed by GPC is in
force,  and no waiver or agreement by GPC is in force for the  extension of time
for the  assessment or payment of any tax. For purposes of this  Agreement,  the
term "tax" includes all federal,  state, local and foreign taxes or assessments,
including income,  sales,  gross receipts,  excise,  use, value added,  royalty,
franchise, payroll,  withholding,  property and import taxes and any interest or
penalties applicable thereto.

                  (c) GPC has not agreed to, and is not  required  to,  make any
adjustments under Section 481(a) of the Code by reason of a change in accounting
method or otherwise.

                  (d) At all  times  since  April  1,  1994,  GPC has  been an S
corporation  within the meaning of Section  1361(a)(1)  of the Code and has used
the calendar year as it taxable year.  Except as set forth on the GPC Disclosure
Schedule, GPC did not conduct any business in any state or political subdivision
in  which  the  disposition  of  any  of  its  assets  including  goodwill  in a
transaction  in which  gain or  income  would be  realized  would  result in the
imposition  by that state or  political  subdivision  of a corporate  level tax,
except that GPC is subject to taxation  under the Colorado  state  franchise tax
laws. GPC has never acquired any asset,  including goodwill,  the basis of which
was determined in whole or in part by reference to the basis of the asset in the
hands of a C corporation within the meaning of Section 1361(a)(2) of the Code or
an S  corporation  subject  to the  provisions  of  Section  1374 of the Code or
predecessor  provisions  thereto.  GPC and its  stockholders  have not taken any
action  which will  result in the (i)  termination  or  revocation  prior to the
Closing  of GPC's  status as an S  corporation  within  the  meaning  of Section
1361(a)(1)  of the  Code  or  (ii)  the  imposition  of a tax on GPC  under  the
provisions  of Section 1374 of the Code.  GPC is not a party to any agreement or
arrangement  with its  stockholders to make  distributions to its stockholder to
pay any tax imposed on the stockholders, except as provided in Section 5.3.
<PAGE>

         2.9      Compliance with Laws.

                  (a) Except for those  which the failure to have would not have
a Material Adverse Effect, GPC has all licenses, permits, franchises,  orders or
approvals of any federal,  state,  local or foreign  governmental  or regulatory
body  relating to the conduct of its business  (collectively,  "Permits");  such
Permits are in full force and effect;  and no  proceeding  is pending or, to the
best  knowledge  of GPC,  threatened  to  revoke or limit  any  Permit.  The GPC
Disclosure Schedule contains a true and complete list of all Permits.

                  (b) GPC is not in violation of any applicable  law,  ordinance
or regulation or any order, judgment, injunction, decree or other requirement of
any  court,   arbitrator  or   governmental  or  regulatory   body.   Since  its
organization,  GPC has not  received  notice  of,  and  there  has not  been any
citation, fine or penalty imposed against GPC for, any such violation or alleged
violation.

         2.10 No Breach.  Except for (a) the filing of a premerger  notification
form pursuant to the HSR Act and (b) the filing of the Merger  Certificate  with
the  State of  Washington,  the  execution,  delivery  and  performance  of this
Agreement by GPC and the  consummation by GPC of the  transactions  contemplated
hereby will not (i) violate any  provision of the Articles of  Incorporation  or
Bylaws of GPC; (ii) violate, conflict with or result in the breach of any of the
terms or conditions  of, result in  modification  of the effect of, or otherwise
give any other contracting party the right to terminate,  or constitute (or with
notice or lapse of time or both  constitute) a default  under,  any  instrument,
contract or other agreement to which GPC is a party or to which it or its assets
or  properties  is  bound or  subject;  (iii)  violate  any  law,  ordinance  or
regulation or any order,  judgment,  injunction,  decree or other requirement of
any court, arbitrator or governmental or regulatory body applicable to GPC or by
which any of GPC's assets,  properties or securities is bound;  (iv) violate any
Permit;  (v) require any filing with, notice to, or permit,  consent or approval
of, any other governmental or regulatory body; or (vi) result in the creation of
any lien or other encumbrance on the assets, properties or securities of GPC.

         2.11 Actions and Proceedings.  There are no outstanding orders, awards,
judgments,  injunctions,  decrees or other requirements of any court, arbitrator
or governmental or regulatory body against GPC or any of its securities,  assets
or  properties  or to the  knowledge  of GPC  any  of its  officers,  directors,
stockholders or key employees.  There are no actions,  suits,  investigations or
claims or legal,  administrative or arbitration  proceedings  pending or, to the
knowledge  of GPC,  threatened  against GPC or any of its  officers,  directors,
stockholders or key employees.  To the knowledge of GPC, there is no fact, event
or circumstance  now in existence that reasonably could be expected to give rise
to any such action, suit, claim, proceeding or investigation.

         2.12 Contracts and Other Agreements.  The GPC Disclosure  Schedule sets
forth a list of the following  contracts and other  agreements to which GPC is a
party or by or to which  it or any of its  assets  or  properties  are  bound or
subject:

                  (a)  any agreement or series of related agreements requiring
aggregate payments by or to GPC of more than $50,000;
<PAGE>

                  (b) any  agreement  with or for the  benefit of any current or
former officer, director, shareholder, employee or consultant of GPC;

                  (c) any  agreement  with  any   labor   union  or  association
representing any employee of GPC;

                  (d) any  agreement  for  the  purchase  or sale of  materials,
supplies,  equipment,  merchandise  or  services  that  contain  an  escalation,
renegotiation or redetermination  clause or that obligate GPC to purchase all or
substantially all of its requirements of a particular  product or service from a
supplier,  or for periodic minimum purchases of a particular  product or service
from a supplier;

                  (e)  other  than  in the  ordinary  course  of  business,  any
agreement  for the sale of any of the  assets  or  properties  of GPC or for the
grant to any person of any options,  rights of first refusal, or preferential or
similar rights to purchase any such assets or properties;

                  (f)      any partnership or joint venture agreement;

                  (g) any  agreement of surety,  guarantee  or  indemnification,
other  than  agreements  in the  ordinary  course of  business  with  respect to
obligations in an aggregate amount not in excess of $50,000;

                  (h) any agreement  containing  covenants of GPC not to compete
in any line of business,  in any geographic area or with any person or covenants
of any other person not to compete with GPC or in any line of business of GPC;

                  (i)      any agreement granting  or  restricting the  right of
GPC to use any Proprietary Right;

                  (j) any agreement  with customers or suppliers for the sharing
of fees, the rebating of charges or other similar arrangements;

                  (k)      any distribution or sales representative agreement;

                  (l)      any agreement appointing any agent of GPC;

                  (m) any agreement with any holder of securities of GPC as such
(including,  without  limitation,  any  agreement  containing  an  obligation to
register any of such securities under any federal or state securities laws);

                  (n)  any  agreement  obligating  GPC to  deliver  services  or
product enhancements or containing a "most favored nation" pricing clause;

                  (o) any agreement  relating to the  acquisition  by GPC of any
operating business or the capital stock of any other person;

                  (p) any  agreement  requiring  the  payment to any person of a
brokerage  or sales  commission  or a  finder's  or  referral  fee  (other  than
arrangements  to pay  commissions or fees to employees in the ordinary course of
business);

                  (q)      any agreement  or  note  relating  to  or  evidencing
outstanding indebtedness for borrowed money;
<PAGE>

                  (r) any lease,  sublease or other agreement under which GPC is
lessor or lessee of any real property or equipment or other tangible property;

                  (s) any  agreement  with a  change  of  control  provision  or
otherwise requiring any consent with respect to the Merger; and

                  (t) any other  material  agreement  whether or not made in the
ordinary course of business.

True and complete  copies of all the  contracts  and other  agreements  (and all
amendments,  waivers  or  other  modifications  thereto)  set  forth  on the GPC
Disclosure  Schedule  have been  furnished to Helix.  Each of such  contracts is
valid,  subsisting,  in full force and effect, binding upon GPC, and to the best
knowledge of GPC,  binding upon the other  parties  thereto in  accordance  with
their  terms,  and GPC is not in  default  under any of them,  nor,  to the best
knowledge of GPC, is any other party to any such contract or other  agreement in
default  thereunder,  nor does any condition  exist that with notice or lapse of
time or both would constitute a default thereunder.

         2.13 Bank Accounts and Powers of Attorney.  The GPC Disclosure Schedule
identifies all bank and brokerage  accounts of GPC, whether or not such accounts
are held in the name of GPC, lists the respective signatories therefor and lists
the names of all persons  holding a power of attorney  from GPC and a summary of
the terms thereof.

         2.14  Properties.  GPC owns and has good title to all of its assets and
properties  reflected as owned on the Audited  Balance Sheet,  free and clear of
any lien,  claim or other  encumbrance,  except for (A)  assets  and  properties
disposed of, or subject to purchase or sales orders,  in the ordinary  course of
business since December 31, 1997, (B) liens or other  encumbrances  securing the
liens of materialmen, carriers, landlords and like persons, all of which are not
yet due and payable, and (C) liens for taxes not yet delinquent.

         2.15     Intangible Property.

                  The GPC  Disclosure  Schedule  sets forth all of the  patents,
trademarks,  service marks, trade names, franchises,  copyrights and inventions,
the  location  of  all  information  regarding  the  registration  of any of the
foregoing or  applications  therefor,  and all  permits,  grants and licenses or
other rights relating to any of the foregoing  (collectively,  the  "Proprietary
Rights")  that are material to the  business of GPC.  Except as set forth on the
GPC Disclosure  Schedule,  GPC has exclusive ownership of all Proprietary Rights
used in its business as presently  conducted or to be used in its business as it
is  contemplated  to be  conducted.  Except as set  forth on the GPC  Disclosure
Schedule,  GPC  has  not  received  any  notices  of  infringement  by it of any
Proprietary  Rights of  others.  Except  as set  forth in on the GPC  Disclosure
Schedule,  to the best  knowledge  of GPC,  none of the present  activities,  or
contemplated  activities under planning or development,  of GPC, or its products
or assets infringe on any Proprietary  Rights of others; and GPC is not aware of
any infringement or violation by others of the Proprietary Rights of GPC. Except
as set forth on the GPC Disclosure Schedule,  GPC has the right to use, free and
clear of claims  or  rights  of  others,  all  trade  secrets,  customer  lists,
procedures,  processes, computer software, and other information required for or

<PAGE>

incident  to  GPC's   services  or  its  business  as  presently   conducted  or
contemplated  to  be  conducted.  GPC's  policies  and  procedures  designed  to
establish and preserve its ownership of its Proprietary  Rights are described on
the GPC Disclosure Schedule. In particular, without limitation of the foregoing,
GPC has (a) affixed appropriate  copyright notices to all copies of any original
written material prepared by it and distributed to the public; and (b) disclosed
or made  available  any  confidential  information  relating to  patents,  trade
secrets,  inventions,  know-how  and  related  Proprietary  Rights  only  to (i)
employees or consultants  of GPC who required such  disclosure or access for the
business  purposes  of  GPC  and  who  have  executed  written   confidentiality
agreements governing their use of confidential information and (ii) as set forth
on the  GPC  Disclosure  Schedule.  GPC is not  aware  of any  violation  of the
confidentiality of its Proprietary  Rights. To the best knowledge of GPC, GPC is
not making unauthorized use of any confidential  information or trade secrets of
any person,  including  without  limitation  any former  employer of any past or
present  employees of GPC. To the best  knowledge of GPC, none of the activities
of any employees of GPC on behalf of GPC violates any agreements or arrangements
which any such employees have with former employers currently in effect.

         2.16     Real Property.

                  (a) The GPC Disclosure  Schedule sets forth a complete list of
all  real  property  owned  by  GPC  (individually,   an  "Owned  Property"  and
collectively,  the  "Owned  Properties").  GPC has good  and  clear  record  and
marketable fee title to the Owned  Properties,  free and clear of all mortgages,
liens, security interests, easements,  restrictive covenants,  rights-of-way and
other encumbrances  ("Encumbrances")  other than (i) liens that are disclosed on
GPCs Disclosure  Schedule;  (ii) liens for taxes, fees, levies,  duties or other
governmental  charges  of any  kind  which  are not yet  delinquent;  (iii)  (A)
platting,  subdivision,  zoning,  building and other similar legal requirements,
(B) easements,  restrictive  covenants,  rights-of-way,  encroachments and other
similar  encumbrances,  which are of record, (C) reservations of coal, oil, gas,
minerals and mineral interests, which are of record, (the Encumbrances described
in clauses (i) through (iii) above are  hereinafter  referred to collectively as
"Permitted  Liens").  Without  limiting  the  generality  of the  foregoing,  as
evidenced by the owner's title insurance policies  identified in GPCs Disclosure
Schedule,  GPC holds fee simple title to each Owned Property subject only to the
matters set forth in such title  policies,  which  matters are set forth on GPCs
Disclosure Schedule. GPC shall cause title to the Owned Properties to be updated
from the effective  dates of such title  insurance  policies to the Closing Date
showing title to the Owned  Properties  complies with the  requirements  of this
Section 2.16(a) and Section 7.7.

                  (b)  Each  of the  Owned  Properties  and the  structures  and
improvements  thereon have been  maintained,  operated and used in accordance in
all material respects with all laws, by-laws,  ordinances,  rules, restrictions,
regulations, orders or codes of all governmental authorities, and all covenants,
conditions and restrictions,  public or private, which materially affect each of
the Owned  Properties or any part thereof or the business or activity  conducted
thereon ("laws and  regulations").  All  construction  on,  improvements to, and
alterations  of each of the Owned  Properties  complies with, and each and every
part of the Owned  Properties has been  maintained and used in accordance  with,
all laws and regulations.
<PAGE>

                  (c) The GPC Disclosure  Schedule sets forth a complete list of
all  real  property  leased  by GPC  (individually,  a  "Leased  Property"  and,
collectively,  the  "Leased  Properties").  GPC has valid,  good and  marketable
leasehold interest in the Leased Properties,  in each case free and clear of all
Encumbrances, except for Permitted Liens and Encumbrances on the fee interest of
the Leased  Properties which do not constitute  indebtedness of GPC. To the best
of GPC's  knowledge,  none of the  easements,  restrictions  or other matters of
record to which such  Leased  Property  is subject  prevent or  unreasonably  or
materially interfere with the use of such Leased Property for the conduct of the
business thereon as heretofore conducted by GPC. GPCs Disclosure Schedule hereto
identifies  the  parties  to and  dates of the lease  for each  material  Leased
Property and all addenda,  amendments  and  attachments  thereto  (each, a "Real
Property  Lease");  except as set forth in GPCs Disclosure  Schedule,  such Real
Property Lease has not been otherwise  amended,  modified or supplemented by any
written  or  oral  agreement  or  understanding.  Except  as set  forth  on GPCs
Disclosure  Schedule,  the Merger as  contemplated  by this  Agreement is either
permitted  as of right  under each Real  Property  Lease or  otherwise  does not
require the consent of the landlord under such Real Property Lease; with respect
to each  material  Real  Property  Lease  for which the  landlord's  consent  is
required,  GPC shall obtain such consent prior to the Closing.  GPC has accepted
possession  of each  Leased  Property  and  occupies  such  leased  premises  in
connection  with the conduct of the business.  Each Real Property  Lease affords
GPC peaceful and undisturbed  possession of the leased premises thereunder.  The
landlord under each Real Property Lease has performed,  to the  satisfaction  of
GPC all of the landlord's  obligations  under such Real Property Lease,  and all
fixtures,  equipment,  improvements  and other components of the leased premises
are in good working  order and condition so as to be adequate for the conduct of
GPC's business. GPC shall cause the landlord for each Leased Property to deliver
to GPC as of the Closing Date an estoppel certificate that confirms the accuracy
of the foregoing representations.

                  (d)  To  GPC's   knowledge,   there  are  no  eminent   domain
proceedings  pending or threatened against any Owned Property or Leased Property
(the  Owned  Properties  and  the  Leased  Properties  are  herein  referred  to
collectively as the "Real Property").

         2.17 Customers. The GPC Disclosure Schedule sets forth the 25 customers
who accounted for the largest sales of GPC during 1997 (the "Customers"). Except
as set forth on the GPC Disclosure  Schedule,  the relationships of GPC with the
Customers are good commercial working relationships.  Except as set forth on the
GPC Disclosure  Schedule,  no Customer has canceled or otherwise  terminated its
relationship  with GPC or has decreased  materially its usage or purchase of the
services of GPC.  Except as set forth on the GPC Disclosure  Schedule,  GPC does
not know of any plan or  intention  of any  Customer,  and has not  received any
written  threat or notice from any Customer,  to terminate,  cancel or otherwise
materially  and  adversely  modify  its  relationship  with  GPC or to  decrease
materially or limit its usage or purchase of the services or products of GPC.

         2.18 Accounts  Receivable.  Subject to the  allowances  with respect to
accounts  receivable  set  forth on the  Closing  Balance  Sheet,  all  accounts
receivable reflected on such balance sheet have arisen in the ordinary course of
business of GPC, represent valid and enforceable obligations due to GPC and have
been  and  are  subject  to  no  set-off,  counterclaim  or  future  performance
obligation on the part of GPC.
<PAGE>

         2.19 Inventory.  The inventory of GPC is and at the Effective Time will
be in good and merchantable condition and saleable or useable in the manufacture
of  saleable  finished  goods in the  ordinary  course of  business,  except for
obsolete or below standard  items written off or reserved  against in accordance
with GPC's past practices.

         2.20 Employee Benefit Plans.  The GPC Disclosure  Schedule sets forth a
complete list of all stock options,  restricted stock,  phantom stock,  pension,
profit  sharing,   retirement,   deferred  compensation,   welfare,   insurance,
disability,  bonus,  incentive,  vacation pay,  severance pay and similar plans,
programs or  arrangements,  including  without  limitation all employee  benefit
plans as defined in Section 3 of the Employee  Retirement Income Security Act of
1974, as amended ("ERISA") (the "Plans")  maintained by GPC or its Subsidiaries.
GPC does not maintain or  contribute to any  "multiemployer  plan" as defined in
Section  4001(a)(3)  of ERISA,  and GPC has not incurred any material  liability
under Sections 4062, 4063 or 4201 of ERISA. Each Plan maintained by GPC which is
intended to be qualified  under either  Section  401(a) or 501(c)(9) of the Code
("Qualified  Plans")  is so  qualified.  Each  Plan  has  been  administered  in
accordance  with  the  terms  of such  Plan  and the  provisions  of any and all
statutes,  orders  or  governmental  rules  or  regulations,  including  without
limitation  ERISA and the Code,  and nothing has been done or omitted to be done
with respect to any Plan that would  result in any  liability on the part of GPC
or a Subsidiary  under Title I of ERISA or Section 4975 of the Code. All reports
required to be filed with  respect to all Plans,  including  without  limitation
annual reports on Form 5500,  have been timely filed except where the failure to
so file would not have a  Material  Adverse  Effect.  No  "reportable  event" as
defined  at  Section  4043 of  ERISA,  other  than any such  event for which the
thirty-day  notice  period has been  waived,  has  occurred  with respect to any
pension  plan subject to Title IV of ERISA.  With  respect to all pension  plans
subject to Title IV of ERISA,  such plans have no unfunded benefit  liabilities,
all  contributions  to such plans  under the  minimum  funding  requirements  of
Section 412 of the Code have been made and all  premium  payments to the Pension
Benefit  Guaranty  Corporation  with  respect to such plans have been made.  All
claims for welfare  benefits  incurred by employees on or before the Closing are
or will be fully covered by third-party  insurance policies or programs.  Except
for  continuation  of health coverage to the extent required under Section 4980B
of  the  Code  or as  otherwise  set  forth  in  this  Agreement,  there  are no
obligations  under any welfare plan  providing  benefits  after  termination  of
employment.

         2.21 Employee Relations.  GPC has approximately 90 full-time equivalent
employees  and generally  enjoys good  employer-employee  relations.  GPC is not
delinquent  in payments to any of its  employees or  consultants  for any wages,
salaries,  commissions,  bonuses or other direct  compensation  for any services
performed  by them to the date hereof or amounts  required to be  reimbursed  to
such  employees.  Except  as set  forth  in the GPC  Disclosure  Schedule,  upon
termination  of the  employment of any  employees,  neither GPC nor Helix or the
Surviving Corporation will by reason of the Merger or anything done prior to the
Effective Time be liable to any of such employees for severance pay or any other
payments  (other than accrued  salary,  vacation or sick pay in accordance  with
GPC's  normal  policies).  True  and  complete  information  as to  all  current
directors,  officers,  employees or consultants of GPC, including, in each case,
name,  current  job  title,  base  salary,  bonus  potential,   commissions  and
termination obligations has been previously furnished to Helix.
<PAGE>

         2.22 Employment Matters.  GPC is in compliance in all material respects
with  all  applicable  foreign,   federal,  state  and  local  laws,  rules  and
regulations respecting employment, employment practices, terms and conditions of
employment and wages and hours, in each case, with respect to Employees. No work
stoppage or labor  strike  against GPC is pending or, to the  knowledge  of GPC,
threatened. GPC is not involved in or, to the knowledge of GPC, threatened with,
any labor  dispute,  grievance,  or  litigation  relating  to  labor,  safety or
discrimination  matters involving any Employee,  including,  without limitation,
charges of unfair labor  practices  or  discrimination  complaints.  GPC has not
engaged in any unfair labor  practices  within the meaning of the National Labor
Relationship Act. GPC is not presently, nor has it been in the past, a party to,
or bound by, (i) any  collective  bargaining  agreement or union  contract  with
respect to Employees and no collective  bargaining agreement is being negotiated
by GPC or (ii) any statutory works council or other agreement,  statute, rule or
regulation  that mandates  employee  approval,  participation,  consultation  or
consent with regard to the transactions contemplated hereby.

         2.23  Employee  Conflicts.  Except as set  forth on the GPC  Disclosure
Schedule,  to  GPC's  knowledge,  no  employee  or  consultant  of GPC (i) is in
violation of any term of any employment contract,  patent disclosure  agreement,
non-competition  agreement,  or any  restrictive  covenant to a former  employer
relating to the right of any such  employee or  consultant to be employed by GPC
because of the nature of the  business  conducted  or  presently  proposed to be
conducted by GPC or to the use of trade secrets or  proprietary  information  of
others or (ii) has given notice to GPC nor is GPC otherwise aware, that any such
employee or consultant intends to terminate his or her employment with GPC.

         2.24  Transactions  with  Management.  Except  as set  forth on the GPC
Disclosure  Schedule,  no officer or  director of GPC has  (whether  directly or
indirectly  through  another entity in which such person has an interest,  other
than as the holder of less than 1% of a class of securities of a publicly traded
company) to the  knowledge of GPC, any interest in (i) any property or assets of
GPC (except as a shareholder), (ii) any current competitor, customer or supplier
of GPC, or (iii) any person which is currently a party to any material  contract
or agreement with GPC.

         2.25  Insurance.  The GPC Disclosure  Schedule sets forth a list of all
policies  or  binders  of  fire,   liability,   product   liability,   workmen's
compensation, vehicular, directors' and officers' and other insurance held by or
on behalf of GPC.  Such  policies and binders are in full force and effect,  are
reasonably  believed to be  adequate  for the  businesses  engaged in by GPC, as
applicable,  and are in conformity with the  requirements of all leases or other
agreements  to which GPC is a party and, to the  knowledge of GPC, are valid and
enforceable in accordance  with their terms.  GPC is not in default with respect
to any  provision  contained  in any such policy or binder nor has GPC failed to
give any notice or present  any claim under any such policy or binder in due and
timely fashion.  There are no outstanding unpaid claims under any such policy or
binder.  GPC has not received  notice of cancellation or non-renewal of any such
policy or binder.

         2.26  Brokerage.  Except for The Wallach  Company,  no broker,  finder,
agent or similar intermediary has acted on behalf of GPC or any of the Principal
Stockholders in connection with this Agreement or the transactions  contemplated
hereby,  and  other  than  the fee  owed to The  Wallach  Company  there  are no
brokerage  commissions,  finders' fees or similar fees or commissions payable in
connection  herewith based on any agreement,  arrangement or understanding  with
GPC or any of the Principal Stockholders, or any action taken by any of them.
<PAGE>

         2.27   Environmental Matters.

                  (a)  Except as set forth on the GPC  Disclosure  Schedule,  no
material  amount of any substance  that has been  designated by an  governmental
entity or by applicable federal, state or local law to be radioactive, hazardous
or otherwise to pose an unreasonable  danger to human health or the environment,
including,    without   limitation,    PCBs,   friable   asbestos,    petroleum,
urea-formaldehyde  and all substances listed as hazardous substances pursuant to
the Comprehensive  Environmental  Response,  Compensation,  and Liability Act of
1980, as amended,  or defined as a hazardous waste pursuant to the United States
Resource  Conservation and Recovery Act of 1976, as amended, and the regulations
promulgated  pursuant to said laws,  (a  "Hazardous  Material"),  but  excluding
office,  maintenance,  shipping and janitorial supplies, are present as a result
of the  actions of GPC,  or, to the best  knowledge  of GPC,  as a result of any
actions of any third party or otherwise, in, on or under any property, including
the land and the improvements,  ground water and surface water thereof, that GPC
has at any time owned,  operated,  occupied or leased.  No  underground  storage
tanks are present under any property that GPC at any time owned or occupied. The
GPC  Disclosure  Schedule  lists all locations that GPC formerly owned or leased
where, to the best knowledge of GPC, Hazardous Materials are present in a volume
or  concentration  that would  reasonably be expected to have a Material Adverse
Effect.

                  (b) GPC  has  not  transported,  stored,  used,  manufactured,
disposed of, released or exposed its employees or others to Hazardous  Materials
in violation of any applicable law, nor has GPC disposed of, transported,  sold,
or  manufactured  any  product  containing  a Hazardous  Material  (collectively
"Hazardous Materials Activities") in violation of any rule,  regulation,  treaty
or statute  promulgated  by any  governmental  entity  authorized  to  prohibit,
regulate or control Hazardous Materials or any Hazardous Material Activity which
would reasonably be expected to have a Material Adverse Effect.

                  (c) GPC currently holds all environmental approvals,  permits,
licenses,  clearances and consents (the  "Environmental  Permits") necessary for
the conduct of GPC's Hazardous Material Activities and other business activities
as such activities are currently being conducted.

                  (d) No material  action,  proceeding,  revocation  proceeding,
amendment  procedure,  writ,  injunction  or  claim  is  pending,  or  to  GPC's
knowledge,  threatened concerning any Environmental  Permit,  Hazardous Material
in, on or under any property  owned or leased by GPC or any Hazardous  Materials
Activity of GPC and there is no fact or  circumstance  that could involve GPC in
any  environmental  litigation  that  would  reasonably  be  expected  to have a
Material Adverse Effect or impose upon GPC any material environmental liability.

                  (e)  GPC has  previously  furnished  to  Helix  copies  of any
environmental  audits  or  risk  assessments,  site  assessments,  documentation
regarding  off-site  disposal of Hazardous  Materials,  spill  control plans and
material correspondence with any governmental agency regarding the foregoing.
<PAGE>

         2.28 Year 2000 Compliance. Certain of GPC's internal  computer  systems
are not Year 2000 compliant, i.e., they may not function properly after December
31, 1999, because they cannot  distinguish  between the 20th and 21st centuries.
GPC has been taking  actions  intended to either correct such systems or replace
them with Year 2000 compliant systems and does not believe that the cost of such
actions will have a Material Adverse Effect. GPC has also taken steps to request
its key  customers  and  suppliers to confirm  that their  systems are Year 2000
compliant.  However,  there can be no  assurance at this time that either GPC or
its key customers and suppliers  will achieve timely  compliance,  or that GPC's
costs of achieving compliance will not exceed its current estimates.

         2.29 Disclosure.  The  representations and warranties and statements of
GPC  contained  in this  Agreement  do not  contain  any untrue  statement  of a
material fact, and do not omit to state any material fact necessary to make such
representations,  warranties and statements, in light of the circumstances under
which they are made, not misleading.  Without  limiting the foregoing  sentence,
there is no fact or  circumstance  known to GPC that has not been  disclosed  to
Helix in this  Agreement  that is reasonably  likely to have a Material  Adverse
Effect.


    SECTION 3 - REPRESENTATIONS AND WARRANTIES OF THE PRINCIPAL STOCKHOLDERS

         Except as set forth on the  disclosure  schedule  delivered to Helix on
the date hereof (the "Stockholder Disclosure Schedule"),  the section numbers of
which are numbered to  correspond  to the section  numbers of this  Agreement to
which they refer, each of the Principal Stockholders,  severally, represents and
warrants to Helix and Acquisition as to itself only as follows:

         3.1  Authority  to  Execute  and  Perform  Agreements.  Each  Principal
Stockholder  has the full legal right and power and all  authority and approvals
required to enter into,  execute and deliver  this  Agreement,  the  Stockholder
Voting  Agreement  (as defined in Section 5.11) and the  Stockholder  Letter (as
defined in Section 5.10) and to perform fully its or his  obligations  hereunder
and  thereunder.  This Agreement has been duly executed and delivered and is the
valid and  binding  obligation  of each  Principal  Stockholder  enforceable  in
accordance  with its terms.  When executed and delivered  pursuant  hereto,  the
Stockholder  Voting  Agreement and the Stockholder  Letter will be the valid and
binding obligation of each Principal Stockholder  enforceable in accordance with
its terms.

         3.2  No  Breach.  The  execution,  delivery  and  performance  of  this
Agreement,  the Stockholder  Voting Agreement and the Stockholder Letter and the
consummation of the  transactions  contemplated  hereby and thereby will not (i)
violate, conflict with or result in the breach of any of the terms or conditions
of,  result  in  modification  of the  effect  of, or  otherwise  give any other
contracting party the right to terminate, or constitute (or with notice or lapse
of time or both constitute) a default under,  any instrument,  contract or other
agreement  to  which  the  Principal  Stockholder  is a party  or to  which  the
Principal  Stockholder or its assets or properties may be bound or subject; (ii)
violate  any  order,  judgment,  injunction,  award  or  decree  of  any  court,
arbitrator or  governmental  or regulatory  body against,  or binding upon,  the
Principal  Stockholder  or upon the  securities,  properties  or  assets  of the
Principal  Stockholder;  (iii)  violate any statute,  law or  regulation  of any
jurisdiction  as  such  statute,  law or  regulation  relates  to the  Principal
Stockholder;  or (iv) require the  approval or consent of any foreign,  federal,
state, local or other governmental or regulatory body or the approval or consent
of any other person.
<PAGE>

         3.3 Title to Shares.  Each Principal  Stockholder owns beneficially and
of record,  free and clear of any lien, claim or encumbrance,  the shares of GPC
Stock set forth opposite such stockholder's  name on Schedule 1.6(d).  There are
no  shareholder  agreements,  voting  trusts,  proxies  or other  agreements  or
understandings with respect to the outstanding shares of capital stock of GPC to
which any Principal Stockholder is a party.

         3.4 Accuracy of GPC Representations and Warranties. To the knowledge of
each Principal Stockholder,  the representations and warranties of GPC contained
herein do not contain any untrue statement of a material fact and do not omit to
state any material fact necessary to make such  representations,  warranties and
statements,  in light of the  circumstances  under  which  they  are  made,  not
misleading.


                  SECTION 4 - REPRESENTATIONS AND WARRANTIES OF
                              HELIX AND ACQUISITION

         Except as set forth on the disclosure  schedule delivered to GPC on the
date hereof (the "Helix Disclosure Schedule"),  the section numbers of which are
numbered to  correspond to the section  numbers of this  Agreement to which they
refer,  Helix  represents and warrants  regarding  itself and  Acquisition,  and
Acquisition  represents and warrants  regarding itself, to GPC and the Principal
Stockholders as follows:

         4.1  Organization.  Each of Helix and Acquisition is a corporation duly
organized,  validly existing and in good standing under the laws of its state of
incorporation  with full corporate power and authority to own, lease and operate
its  assets  and  to  carry  on its  business  as now  being  and as  heretofore
conducted.

         4.2  Authority  to Execute  and  Perform  Agreement.  Each of Helix and
Acquisition  has the corporate  power and  authority to enter into,  execute and
deliver  this  Agreement  and  to  perform  fully  its  respective   obligations
hereunder.  The execution and delivery of this Agreement and the consummation of
the transactions  contemplated  hereby have been duly authorized by the Board of
Directors of Helix,  which is the only required  corporate action on the part of
Helix, and by all necessary  corporate  action on the part of Acquisition.  This
Agreement has been duly executed and delivered by each of Helix and  Acquisition
and  constitutes  a  valid  and  binding  obligation  of  each,  enforceable  in
accordance with its terms.

         4.3      Capitalization.

                  (a) Helix is  authorized to issue  30,000,000  shares of Helix
Common  Stock,  of which  19,830,206  shares were issued and  outstanding  as of
December 31, 1997,  and  2,000,000  shares of preferred  stock,  $1.00 par value
("Helix Preferred Stock"), issuable in series, none of which are outstanding. As
of December  31, 1997,  except for an  aggregate  of  1,313,774  shares of Helix
Common Stock reserved for issuance under various stock option and stock purchase
plans of Helix,  there is no outstanding  right,  subscription,  warrant,  call,
preemptive right, option or other agreement of any kind to purchase or otherwise
to receive from Helix any shares of the capital  stock or any other  security of
Helix and  there is no  outstanding  security  of any kind  convertible  into or
exchangeable for such capital stock. When issued in accordance with the terms of
this  Agreement,  Helix Common Stock to be issued pursuant to the Merger will be
duly  authorized,  validly  issued,  fully paid,  nonassessable  and free of any
preemptive rights.
<PAGE>

                  (b) All the issued and outstanding  shares of capital stock of
Acquisition  have been or, at the Closing,  will be duly  authorized and validly
issued, fully paid and nonassessable,  will not have been issued in violation of
any preemptive rights and will be owned by Helix.

         4.4 SEC Reports.  Helix has previously  delivered to GPC its (i) Annual
Report on Form 10-K for the year ended December 31, 1997 (the "Helix 10-K"),  as
filed with the SEC, (ii) the proxy  statements  relating to Helix's  meetings of
stockholders  held since  December 31, 1996 and to be held on April 29, 1998 and
(iii) all other  periodic and current  reports filed by Helix with the SEC under
the Securities  Exchange Act of 1934 (the "Exchange  Act") since March 31, 1997.
As of their respective  dates,  such reports  complied in all material  respects
with applicable SEC  requirements  and did not contain any untrue statement of a
material fact or omit to state a material fact required to be stated  therein or
necessary to make the statements  therein,  in light of the circumstances  under
which they were made,  not  misleading.  Helix has timely filed with the SEC all
reports  required to be filed under Sections 13, 14 or 15(d) of the Exchange Act
since March 31, 1997.

         4.5  Financial  Statements.   The  consolidated   financial  statements
contained in the Helix 10-K have been prepared from, and are in accordance with,
the books and records of Helix and  present  fairly the  consolidated  financial
condition and results of operations of Helix and its  subsidiaries as of and for
the  periods  presented  therein,  all in  conformity  with  GAAP  applied  on a
consistent basis, except as otherwise noted therein.

         4.6 No Material  Adverse  Change.  Since  December 31, 1997,  except as
described  in a Helix Form 10-K or any Form 8-K filed  prior to the date of this
Agreement,  or  changes  in the  general  business  of  Helix  that  are  public
knowledge,  there  has not been  any  material  adverse  change  in the  assets,
properties,  results  of  operations  or  financial  condition  of Helix and its
subsidiaries taken as a whole (a "Helix Material Adverse Effect").

         4.7  Actions  and  Proceedings.  Except as set forth in the Helix 10-K,
there are no actions,  suits or claims or legal,  administrative  or arbitration
proceedings  pending  or,  to the  best  knowledge  of  Helix  and  Acquisition,
threatened  against Helix,  Acquisition or any other corporation or legal entity
of which Helix owns,  directly or indirectly,  50% or more of the stock or other
equity interest entitled to vote for the election of directors that individually
or in the aggregate  would affect  materially and adversely the ability of Helix
or Acquisition to complete the  transactions  contemplated  hereby or that would
have a Helix Material Adverse Effect.

         4.8  No  Breach.  The  execution,  delivery  and  performance  of  this
Agreement  by Helix  and  Acquisition  and the  Escrow  Agreement  by Helix  and
consummation by such parties of the  transactions  contemplated  hereby will not
(i) violate any provision of the Certificate of Incorporation or Bylaws of Helix
or the  Articles  of  Incorporation  or Bylaws  of  Acquisition;  (ii)  violate,
conflict  with or result in the  breach  of any of the terms or  conditions  of,
result in modification of the effect of, or otherwise give any other contracting
party the right to terminate,  or constitute (or with notice or lapse of time or
both constitute) a default under, any instrument, contract or other agreement to
which Helix or  Acquisition  is party or to which either of them or any of their
assets or  properties is bound or subject;  (iii) violate any law,  ordinance or

<PAGE>

regulation or any order,  judgment,  injunction,  decree or  requirement  of any
court,  arbitrator or  governmental  or regulatory  body  applicable to Helix or
Acquisition or by which any of their assets or properties is bound; (iv) require
any filing with, notice to, or permit,  consent or approval of, any governmental
or regulatory  body except for (a) the filing of a premerger  notification  form
pursuant  to the HSR Act,  (b) the  filing of the  Merger  Certificate  with the
Secretary  of State of  Washington,  (c)  filings  with  various  state blue sky
authorities and (d) the filing with the Nasdaq National Market of an application
for listing of the shares of Helix Common  Stock to be issued in the Merger,  or
(v) result in the  creation  of any lien or other  encumbrance  on the assets or
properties of Helix or Acquisition.


                      SECTION 5 - COVENANTS AND AGREEMENTS

         The parties covenant and agree as follows:

         5.1  Conduct of  Business.  Except  with the prior  written  consent of
Helix,  which  will  not be  unreasonably  withheld,  and  except  as  otherwise
contemplated  herein,  during the period from the date  hereof to the  Effective
Time, GPC shall observe the following covenants:

                  (a)      Affirmative Covenants Pending Closing.  GPC will:

                           (i)  Preservation of Personnel.  Use  all  reasonable
efforts to preserve  intact its business  organization  and keep  available  the
services  of  present  employees  and  consultants,  it  being  understood  that
termination  of employees with poor  performance  ratings shall not constitute a
violation of this covenant;

                           (ii) Insurance. Use all reasonable efforts to keep in
effect casualty,  public  liability,  worker's  compensation and other insurance
policies in  coverage  amounts not less than those in effect at the date of this
Agreement;

                           (iii)    Preservation of the Business; Maintenance of
Properties,  Contracts.  Use  commercially  reasonable  efforts to preserve  its
businesses,  advertise,  promote and market its  services,  keep its  properties
intact,  preserve its  goodwill,  and maintain all physical  properties  in good
operating condition;

                           (iv)     Intellectual Property Rights.  Use its best
efforts to preserve and protect the Proprietary Rights; and

                           (v)      Ordinary  Course  of  Business.  Operate its
business diligently and solely in the ordinary course.

                  (b)      Negative Covenants Pending Closing.  GPC will not:

                           (i)      Disposition of Assets.  Sell or transfer, or
mortgage,  pledge or create or permit to be  created  any lien on,  any of their
assets,  other than sales or transfers  in the  ordinary  course of business and
liens existing under  arrangements  disclosed  herein or permitted under Section
2.14 or Section 2.16;
<PAGE>

                           (ii)   Liabilities.   (A)  Incur  any  obligation  or
liability  other than in the ordinary  course of GPC's  business,  (B) incur any
indebtedness  for borrowed  money or (C) enter into any contracts or commitments
involving  payments  by GPC of $50,000 or more,  other than  purchase  orders or
commitments  for  inventory  materials  and supplies in the  ordinary  course of
business;

                           (iii)  Compensation.  (A) Change the  compensation or
fringe  benefits of any officer,  director,  employee or consultant,  except for
ordinary  merit  increases for employees  other than officers  based on periodic
reviews in accordance  with past  practices or (B) enter into or modify any Plan
or any  employment,  severance or other  agreement  with any officer,  director,
employee or consultant of GPC;

                           (iv)     Capital Stock.  (A) Grant or  accelerate the
exercisability of, any option, warrant or other right to purchase, or to convert
any  obligation  into,  shares of its  capital  stock,  (B)  declare  or pay any
dividend or other  distribution  with respect to any shares of its capital stock
except as permitted by Section 5.3 or (C) issue any shares of its capital stock,
except upon the exercise of options outstanding on the date hereof;

                           (v)      Charter and Bylaws.  Amend  the  Articles of
Incorporation or Bylaws of GPC;

                           (vi)     Acquisitions.  Make   any   acquisition   of
property other than in the ordinary course of GPC's business;

                           (vii)    License Agreements.  Enter  into  or  modify
any license,  technology  development or technology  transfer agreement with any
other  person or  entity,  other than  license  agreements  entered  into in the
ordinary  course of business on GPC's  standard form as previously  delivered to
Helix;

                           (viii)   Legal Action.  Commence   any  legal  action
outside the ordinary course of business that could expose Helix or the Surviving
Corporation  directly or indirectly to any material liability as a result of any
counterclaim or cross-claim or otherwise;

                           (ix)     Other    Material    Changes.  Take      any
affirmative action or fail to take any reasonable action within its control as a
result of which any of the changes or events  listed in Section 2.7 is likely to
occur.

         5.2 Corporate  Examinations and Investigations.  Prior to the Effective
Time,  Helix shall be entitled,  through its employees and  representatives,  to
have  such  access to the  assets,  properties,  business,  books,  records  and
operations of GPC as Helix shall  reasonably  request in connection with Helix's
investigation of GPC with respect to the transaction  contemplated  hereby.  Any
such  investigation  and examination  shall be conducted at reasonable times and
GPC shall cooperate fully therein.  No  investigation by Helix shall diminish or
obviate any of the representations,  warranties,  covenants or agreements of GPC
or the Principal Stockholders  contained in this Agreement.  In order that Helix
may have full  opportunity  to make such  investigation,  GPC shall  furnish the
representatives of Helix during such period with all such information and copies
of such  documents  concerning  the affairs of GPC as such  representatives  may
reasonably  request  and cause its  officers,  employees,  consultants,  agents,
accountants  and  attorneys  to  cooperate  fully with such  representatives  in
connection with such investigation.
<PAGE>

         5.3 Taxes.  GPC shall prepare and timely file,  in a manner  consistent
with prior  years,  all tax  returns  required  to be filed with  respect to all
periods  ending on or before  the  Closing,  and shall  timely pay any Taxes and
estimated Taxes,  including  additions,  interest and penalties,  required to be
paid  with  respect  to any  period  ending  on or  before  the  Closing.  Helix
acknowledges and agrees that GPC shall be entitled to make a distribution to its
stockholders  immediately  prior to the Closing in an amount equal to the amount
of any federal, state, local and foreign taxes payable by such stockholders with
respect to any of GPC's tax items,  income,  or loss  taken into  account  under
Section 1366 of the Code to determine  the federal  income tax liability of such
stockholders  for the short S Corporation  taxable year ending as of the Closing
as estimated by GPC and approved by Helix's  accountants.  GPC shall  deliver to
Helix and its  accountants  not less than ten (10) days  before the  Closing its
good  faith  estimate  of the  amount  of such  distribution  and the  financial
statement information on which it is based.

         5.4 Expenses.  Each of GPC and Helix shall bear its respective expenses
incurred in connection with the  preparation,  execution and performance of this
Agreement  and  the  transactions   contemplated   hereby,   including   without
limitation,  all fees and  expenses  of  agents,  representatives,  counsel  and
accountants.

         5.5 Authorization  from Others.  Prior to the Closing Date, the parties
shall use all  reasonable  efforts to obtain all  authorizations,  consents  and
permits required to permit the consummation of the transactions  contemplated by
this Agreement.

         5.6 Consummation of Agreement. Each party shall use its best efforts to
perform and fulfill all conditions and obligations to be performed and fulfilled
by it under this  Agreement  and to ensure that to the extent within its control
or  capable  of   influence   by  it,  no  breach  of  any  of  the   respective
representations,  warranties  and  agreements  hereunder  occurs or exists on or
prior to the Effective Time, all to the end that the  transactions  contemplated
by this Agreement shall be fully carried out in a timely fashion.

         5.7 Public  Announcements  and  Confidentiality.  Any press  release or
other information to the press or any third party with respect to this Agreement
or the  transactions  contemplated  hereby shall  require the prior  approval of
Helix and GPC, which approval shall not be unreasonably withheld,  provided that
a party  shall not be  prevented  from  making  such  disclosure  as it shall be
advised  by  counsel  is  required  by law or the rules of the  Nasdaq  National
Market.  GPC and the Principal  Stockholders  shall also keep  confidential  and
shall not use in any manner any information or documents  obtained from Helix or
its  representatives  concerning  Helix's  assets,   properties,   business  and
operations, unless readily ascertainable from public information,  already known
or subsequently  developed by GPC or the Principal  Stockholders  independently,
received  from a third party not under an  obligation  to keep such  information
confidential  or otherwise  required by law. If this  Agreement  terminates  all
copies of any documents obtained from Helix, GPC or their  representatives  will
be  returned,  except  that one copy  thereof  may be retained by counsel to the
party returning such documents in order to evidence  compliance  hereunder.  The
obligations  set forth in the previous  two  sentences of this Section 5.7 shall
survive termination of this Agreement.
<PAGE>

         5.8 No Solicitation.  GPC and the Principal  Stockholders  will not (i)
solicit,  initiate or encourage  discussions with any person,  other than Helix,
relating to the possible  acquisition of GPC or all or a material portion of the
assets or capital stock of GPC or any merger or other business  combination with
GPC (an  "Acquisition  Transaction")  or (ii)  participate  in any  negotiations
regarding,  or furnish to any other  person  information  with  respect  to, any
effort  or  attempt  by  any  other  person  to do or to  seek  any  Acquisition
Transaction.  GPC and the  Principal  Stockholders  agree  to  inform  Helix  in
reasonable  detail  within  one  business  day of their  receipt  of any  offer,
proposal or inquiry  relating to any  Acquisition  Transaction  with an economic
value greater than fifty ($50,000,000) million.

         5.9 Filings  Under HSR Act. As soon as  practicable,  each of Helix and
GPC shall file with the Federal Trade  Commission  (the "FTC") and the Antitrust
Division of the  Department  of Justice (the  "Antitrust  Division") a premerger
notification  form  and any  supplemental  information  (other  than  privileged
information) which may be requested in connection  therewith pursuant to the HSR
Act,  which  filings and  supplemental  information  will comply in all material
respects  with the  requirements  of the HSR Act.  Each of GPC and  Helix  shall
cooperate  fully  with the  other in  connection  with the  preparation  of such
filings and shall use best efforts to respond to any  requests for  supplemental
information  from  the  FTC or  the  Antitrust  Division  and  to  obtain  early
termination  of any waiting  period  applicable to the Merger under the HSR Act.
Any and all filing fees  required to be paid in  connection  with the  premerger
notification pursuant to the HSR Act shall be borne by Helix.

         5.10 Stockholder  Letter.  GPC shall use its best efforts to deliver to
Helix prior to the Closing Date a  Stockholder  Letter from each  individual  or
entity who will receive Merger  Consideration in substantially the form attached
hereto as Exhibit B (a  "Stockholder  Letter"),  and each Principal  Stockholder
agrees to deliver to Helix prior to the Closing Date, a Stockholder Letter.

         5.11 Voting of GPC Stock.  GPC shall use its best efforts to deliver to
Helix not later than the execution of this  Agreement and in all events prior to
the Effective Date from each individual or entity listed on Schedule 5.11: (i) a
Stockholder  Voting  Agreement  in  substantially  the form  attached  hereto as
Exhibit  C and (ii) an  Irrevocable  Proxy in  substantially  the form  attached
hereto as  Exhibit  D. Each  Principal  Stockholder  agrees  to  execute  such a
Stockholder Voting Agreement and Irrevocable Proxy.

         5.12 Noncompetition Agreements. GPC shall use all reasonable efforts to
deliver to Helix prior to the Closing Date a Non-Disclosure, Non-Competition and
Developments  Agreement in substantially the form attached hereto as Exhibit E-1
from each major  Stockholder  who is an employee of GPC listed on Schedule  5.12
for a term  of  three  years  from  the  Effective  Time  and a  Non-Disclosure,
Non-Competition  and Developments  Agreement in substantially  the form attached
hereto as Exhibit E2 from each  employee or  consultant  listed on Schedule 5.12
for a term of two years from the  Effective  Time.  Each  Principal  Stockholder
listed  on  Schedule  5.12  agrees  to  execute  the  relevant   non-competition
agreement.
<PAGE>

         5.13 Patent and Confidential Information Agreements.  GPC shall deliver
to  Helix  prior  to the  Closing  Date a Patent  and  Confidential  Information
Agreement  substantially  in the form  attached  hereto  as  Exhibit F from each
employee of GPC and from each  consultant  of GPC  identified  on Schedule  5.13
attached  hereto and shall use its best efforts to deliver to Helix prior to the
Closing Date a Patent and  Confidential  Information  Agreement  from each other
employee or consultant of Helix. In the event that any of the "other"  employees
or consultants of GPC fails to execute and deliver said Patent and  Confidential
Information  Agreement  prior to the  Closing  Date  because  such  employee  is
traveling or otherwise  unavailable  to execute such agreement or for other good
reason,  then GPC agrees that all such employees and  consultants  shall execute
and deliver such Patent and Confidential  Information  Agreements  within thirty
(30) days following the Closing Date.

         5.14  Incentive  Plans  Termination  and Release.  GPC shall deliver to
Helix prior to the Closing Date an agreement of termination and release, in form
satisfactory to Helix,  from each participant in the Incentive Plans,  provided,
however, that each participant shall have received the independent  compensation
consultant's  calculation referred to in Section 1.6(b)(ii) prior to the Closing
Date.

         5.15 Helix SEC  Filings.  Helix  shall  furnish GPC with a copy of each
document  filed by it under the Exchange Act promptly after filing the same. All
filings made by Helix after the date hereof pursuant to the Exchange Act will be
made in a timely fashion,  will comply as to form in all material  respects with
the  applicable  provisions  of the Exchange  Act and the rules and  regulations
thereunder and will not contain any untrue  statement of a material fact or omit
to state a 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.

         5.16 Publishing of Combined Financial  Results.  As soon as practicable
after the end of the first month  following the Effective Time covering at least
thirty  (30)  days of  operations,  Helix  shall use all  reasonable  commercial
efforts to publish  financial  results  covering  at least  thirty  (30) days of
combined operations of Helix and GPC.

         5.17 Form S-3 Registration.  Helix shall file a Registration  Statement
on Form S-3 (or any  similar  registration  statement  then in effect)  covering
Helix  Common  Stock  issuable in the Merger and seek to have such  Registration
Statement declared and remain effective in accordance with the provisions of the
Registration Rights Agreement attached hereto as Exhibit G.

         5.18  Disclosure  Statements.  Prior to the Closing,  GPC promptly will
supplement or amend the GPC Disclosure  Schedule  delivered pursuant hereto with
respect to any matter hereafter  arising which, if existing,  occurring or known
at the date of this  Agreement,  would  have  been  required  to be set forth or
described in such Schedule or which is necessary to correct any  information  in
such  Schedule  which has been  rendered  inaccurate  thereby.  No supplement or
amendment to the GPC Disclosure  Schedule shall be deemed to supplement or amend
the GPC Disclosure  Schedule for purposes of (i) determining the accuracy of any
of the  representations  and  warranties  made by GPC in this  Agreement or (ii)
determining  whether any  condition to Helix's  obligations  to  consummate  the
Merger has been satisfied.
<PAGE>

         5.19  Further  Assurances.  Each  of the  parties  shall  execute  such
documents,  further  instruments of transfer and assignment and other papers and
take such further  actions as may be  reasonably  required or desirable to carry
out the provisions hereof and the transactions contemplated hereby.


               SECTION 6 - CONDITIONS PRECEDENT TO THE OBLIGATIONS
                     OF EACH PARTY TO CONSUMMATE THE MERGER

         The respective obligations of each party to consummate the Merger shall
be subject to the  satisfaction  or waiver,  at or before the Effective Time, of
each of the following conditions:

         6.1 Approvals.  All required  approvals of the  stockholders of GPC and
all  consents  and  approvals  referred  to in this  Agreement  shall  have been
obtained.

         6.2 HSR Act. Any waiting period  applicable to the Merger under the HSR
Act shall have expired or terminated.

         6.3 Absence of Order.  No restraining  order or injunction of any court
which prevents consummation of the Merger shall be in effect.

             SECTION 7 - CONDITIONS PRECEDENT TO THE OBLIGATIONS OF
                 HELIX AND ACQUISITION TO CONSUMMATE THE MERGER

         The  obligation of Helix and  Acquisition  to consummate  the Merger is
subject to the satisfaction or waiver by Helix, at or before the Effective Time,
of the following conditions:

         7.1 Representations,  Warranties and Covenants. The representations and
warranties of GPC and the  Principal  Stockholders  contained in this  Agreement
shall be true and correct at the date of execution of this  Agreement and on and
as of the Effective Time with the same force and effect as though made on and as
of the  Effective  Time  (with  such  exceptions  as may be  permitted  under or
contemplated  by this  Agreement)  and  there  shall  not have been any event or
circumstance  resulting in a Material  Adverse Effect  relating to GPC since the
date  hereof.  GPC and the  Principal  Stockholders  shall  have  performed  and
complied  with all  covenants and  agreements  required by this  Agreement to be
performed or complied with by them on or prior to the Effective Time.

         7.2 Opinion of Counsel to GPC.  Helix shall have received an opinion of
counsel  to GPC,  dated  the  Closing  Date,  in form and  substance  reasonably
acceptable to Helix.

         7.3      Merger Documents.  GPC shall have executed  and  delivered the
Merger Certificate referred to in Section 1.2.

         7.4  Dissenting  Shares.  The  Dissenting  Shares shall not exceed five
percent (5%) of the shares of GPC Common Stock issued and  outstanding or deemed
issued and outstanding on the Closing Date.
<PAGE>

         7.5 Tax Opinion.  Helix shall have  received an opinion of its counsel,
dated the Closing  Date,  substantially  to the effect that, on the basis of the
facts and  representations  set forth in such  opinion,  or set forth in writing
elsewhere  and referred to therein,  for federal  income tax purposes the Merger
will  constitute a  reorganization  within the meaning of Section  368(a) of the
Code  and  that no gain or loss  will  be  recognized  by and  there  will be no
corporate income tax liability to Helix or GPC by reason of the Merger.

         7.6 Pooling of Interest  Opinions.  Helix shall have  received a letter
from its accountants,  Coopers & Lybrand LLP,  expressing such accounting firm's
concurrence  in  management's  assessment  as  to  the  appropriateness  of  the
treatment of the transactions contemplated herein under the pooling of interests
accounting methods. In addition,  Helix should have received a letter from GPC's
accountants,  Arthur Andersen LLP, expressing such accounting firm's concurrence
in GPC  management's  assessment  that GPC  qualifies as an entity that may be a
party to a business  combination  accounted for as a pooling of interests  under
U.S. generally accepted accounting principles.

         7.7 Title  Insurance.  Helix  shall  have  received  an  owner's  title
insurance  policy (on the then-current  ALTA form) from a  nationally-recognized
title insurance company,  which has been issued to GPC at normal title insurance
premium rates insuring fee simple title in GPC as of the Closing Date, free from
all  Encumbrances and exceptions other than (i) the Permitted Liens and (ii) the
standard preprinted  exclusions from coverage set forth in the then-current ALTA
form of owner's title insurance.

         7.8 Escrow Agreement.  The Escrow Agreement,  substantially in the form
attached  hereto as Exhibit A, shall have been  executed  and  delivered  by all
parties thereto.

         7.9   Stockholder   Letters.   Helix  shall  have  received  from  each
stockholder  of GPC a  Stockholder  Letter in  substantially  the form  attached
hereto as Exhibit B.

         7.10   Noncompetition    Agreements.    Helix   shall   have   received
Non-Disclosure, Non-Competition and Developments Agreements in substantially the
form  attached  hereto as  Exhibit  E-1 from each  major  Stockholder  who is an
employee  of GPC  listed on  Schedule  5.12 for a term of three  years  from the
Effective Time and Non-Disclosure, Non-Competition and Development Agreements in
substantially  the form attached  hereto as Exhibit E2 from each employee of GPC
listed on Schedule 5.12 for a term of two years from the Effective Time.

         7.11 Patent and Confidential  Information Agreements.  Helix shall have
received Patent and Confidential  Information  Agreements in  substantially  the
form  attached  hereto as Exhibit F from each  employee  and  consultant  of GPC
identified on Schedule 5.13 attached hereto.

         7.12 Incentive Plans Termination and Release. Helix shall have received
agreements of termination and release,  in form satisfactory to Helix, from each
participant in the Incentive  Plans,  provided,  however,  that each participant
shall  have  previously  received  the  independent  compensation   consultant's
calculation referred to in Section 1.6(b)(ii).
<PAGE>

         7.13  Officer's  Certificate.  Helix shall have  received a certificate
dated  the  Closing  Date  from  the  President  of GPC  stating  that  (i)  the
representations and warranties and agreements of GPC contained in this Agreement
are true and correct, individually and in the aggregate, as of the Closing Date,
(ii)  GPC has  performed  and  complied  with  its  obligations  and  agreements
hereunder,  (iii) there has not been any event or  circumstance  resulting  in a
Material  Adverse  Effect  relating to GPC since the date of this  Agreement and
(iv) the conditions set forth in Section 7.10 and 7.11 have been satisfied.

         7.14 Secretary's  Certificate.  Helix shall have received a certificate
in form  reasonably  satisfactory  to Helix  dated  the  Closing  Date  from the
Secretary  of GPC  attaching  (i) GPC's  Articles of  Incorporation,  (ii) GPC's
bylaws,  (iii) all  corporate  action  taken in  connection  herewith,  and (iv)
certifying the incumbency of GPC's officers who execute  documents in connection
herewith.

         7.15 Additional  Items. GPC and each Principal  Stockholder  shall have
furnished  Helix  with  such  other  certificates  and  documents  as have  been
reasonably requested by Helix.


            SECTION 8 - CONDITIONS PRECEDENT TO THE OBLIGATION OF THE
           GPC AND THE PRINCIPAL STOCKHOLDERS TO CONSUMMATE THE MERGER

         The obligation of GPC and the Principal  Stockholders to consummate the
Merger is  subject  to the  satisfaction  or waiver  by them,  at or before  the
Effective Time, of the following conditions:

         8.1 Representations,  Warranties and Covenants. The representations and
warranties of Helix and  Acquisition  contained in this Agreement  shall be true
and  correct at the date of  execution  of this  Agreement  and on and as of the
Effective  Time with the same force and  effect as though  made on and as of the
Effective Time (with such  exceptions as may be permitted  under or contemplated
by this  Agreement).  Each of Helix and  Acquisition  shall have  performed  and
complied  with all  covenants and  agreements  required by this  Agreement to be
performed or complied with by it on or prior to the Effective Time.

         8.2 Officer's Certificate.  GPC shall have received a certificate dated
the  Closing   Date  from  the   President   of  Helix   stating  that  (i)  the
representations  and  warranties  and  agreements  of  Helix  contained  in this
Agreement are true and correct,  individually  and in the  aggregate,  as of the
Closing Date and (ii) Helix has performed and complied with its  obligations and
agreement  hereunder  and (iii)  there  has not been any  event or  circumstance
resulting in a Material  Adverse Effect relating to Helix since the date of this
Agreement.

         8.3 Opinion of Counsel to Helix.  GPC shall have received an opinion of
counsel to Helix and Acquisition,  dated the Closing Date, in form and substance
reasonably acceptable to GPC.

         8.4 Tax  Opinion.  GPC shall have  received an opinion of its  counsel,
addressed to GPC and its stockholders and dated the Closing Date,  substantially
to the effect that, on the basis of facts and  representations set forth in such
opinion, or set forth in writing elsewhere and referred to therein,  for federal
income tax  purposes  the Merger will  constitute  a  reorganization  within the

<PAGE>

meaning of Section  368(a) of the Code and no gain or loss will be recognized by
GPC or its  stockholders  by reason of the receipt of the shares of Helix Common
Stock in the Merger (it being  understood  that such  opinion will not extend to
cash payments in lieu of fractional share interests and may not extend to shares
of Helix  Common Stock  received by holders of vested stock  options to purchase
shares of GPC Stock; provided, however, that in the event that counsel is unable
or  unwilling  to deliver  such  opinion,  then this  condition  shall be deemed
satisfied if such opinion is delivered by Helix's counsel.

         8.5  Registration  Rights  Agreement.  A registration  rights agreement
substantially  in the form attached hereto as Exhibit G shall have been executed
and delivered by Helix.


                  SECTION 9 - TERMINATION, AMENDMENT AND WAIVER

         9.1      Termination.  This  Agreement  may  be  terminated at any time
prior to the Effective Time as follows:

         (a) by either  GPC or Helix,  by written  notice to the  other,  if the
Effective  Time shall not have  occurred on or before June 15, 1998,  other than
due to issues  with  respect to the filing  pursuant  to the HSR Act;  provided,
however,  that the right to terminate this Agreement under this subsection shall
not be available to any party whose  breach of a  representation  or warranty or
failure to fulfill any covenant or agreement  under this  Agreement has been the
cause of or  resulted  in the  failure of the Merger to occur on or before  such
date, with any such breach or failure by a Principal  Stockholder being deemed a
breach or failure by GPC for this purpose.

         (b) by GPC (provided that none of the Principal Stockholders nor GPC is
then in  material  breach of any  representation,  warranty,  covenant  or other
agreement  contained  herein),  by written notice to Helix,  if there shall have
been a  material  breach of any of the  covenants  or  agreements  or any of the
representations or warranties  contained in this Agreement on the part of Helix,
which  breach is either not cured  within 20 days  following  written  notice to
Helix or by its nature cannot be cured prior to the Closing; provided,  however,
that GPC shall not have the right to terminate this  Agreement  pursuant to this
subsection  because of the breach of any  representation or warranty unless such
breach,  together  with  all  such  other  breaches,  would  entitle  GPC not to
consummate the transactions contemplated hereby under Section 8.1;

         (c) by Helix (provided that Helix is not then in material breach of any
representation,  warranty,  covenant or other agreement  contained  herein),  by
written notice to GPC, if there shall have been a material  breach of any of the
covenants or agreements or any of the representations or warranties contained in
this Agreement on the part of GPC or any Principal Stockholder,  which breach is
either not cured within 20 days following written notice to GPC or by its nature
cannot be cured prior to the Closing;  provided,  however,  that Helix shall not
have the right to terminate this Agreement  pursuant to this subsection  because
of the breach of any  representation  or warranty  unless such breach,  together
with  all such  other  breaches,  would  entitle  Helix  not to  consummate  the
transactions contemplated hereby under Section 7.1;
<PAGE>

         (d) by either  Helix or GPC,  by written  notice to the  other,  if any
governmental  entity shall have issued any  injunction or taken any other action
permanently restraining,  enjoining or otherwise prohibiting the consummation of
the Merger and such  injunction  or other  action  shall have  become  final and
nonappealable; or

         (e) at any time with the written consent of Helix and GPC.

         9.2 Effect of Termination.  If this Agreement is terminated as provided
in Section 9.1, this Agreement shall  forthwith  become void and have no effect,
without  liability  on the  part  of  any  party,  its  directors,  officers  or
stockholders,  other  than the  provisions  of this  Section  9.2,  Section  5.4
relating to expenses and Section 5.7 relating to publicity  and  confidentiality
to the extent  provided  therein.  Nothing  contained  in this Section 9.2 shall
relieve  any party from  liability  for any breach of this  Agreement  occurring
before such termination.

         9.3  Amendment.  This  Agreement  may  not  be  amended  except  by  an
instrument signed by each party hereto;  provided,  however, that after adoption
of this Agreement by the  stockholders of GPC,  without the further  approval of
the stockholders of GPC, no amendment may be made that (a) alters or changes the
amount or kind of  consideration to be received as provided herein or (b) alters
or changes any of the terms of this Agreement if such alteration or change would
materially adversely affect the stockholders of GPC.

         9.4 Waiver.  At any time prior to the Effective  Time, any party hereto
may, (a) extend the time for the  performance of any of the obligations or other
acts  of  any  other  party  hereto  or (b)  waive  compliance  with  any of the
agreements of any other party or any conditions to its own obligations,  in each
case only to the extent such obligations, agreements and conditions are intended
for its  benefit;  provided  that any such  extension or waiver shall be binding
upon a party only if such extension or waiver is set forth in a writing executed
by such party.


                          SECTION 10 - INDEMNIFICATION

         10.1  Survival.  Notwithstanding  any  right  of  any  party  to  fully
investigate the affairs of the other party and  notwithstanding any knowledge of
facts determined or determinable by such party pursuant to such investigation or
right  of  investigation,  each  party  has the  right  to rely  fully  upon the
representations,  warranties,  covenants  and  agreements of each other party in
this  Agreement or in any  certificate,  financial  statement or other  document
delivered by any party pursuant hereto.  All such  representations,  warranties,
covenants and agreements shall survive the execution and delivery hereof and the
Closing  hereunder,  subject to the  limitations  set forth in Section  10.4. No
person  shall  have a right to  recovery  against  any  party  (or any  officer,
director,  employee or agent of a party)  other than through the exercise of the
indemnification  rights set forth in Section 10.2,  which shall  constitute  the
sole and  exclusive  remedy  after the Closing Date for any breach by a party of
any representation,  warranty or covenant contained herein or in any certificate
or other  instrument  delivered  pursuant  hereto,  other than a  fraudulent  or
intentional breach.
<PAGE>

         10.2     Obligation of GPC and the Stockholders to Indemnify.

                  (a) Subsequent to the Effective Time, the holders of GPC Stock
outstanding immediately prior to the Effective Time, shall solely, to the extent
of their interest in the Escrow  Account held pursuant to the Escrow  Agreement,
jointly and severally,  indemnify and hold harmless  Helix,  Acquisition and the
Surviving  Corporation (and their  respective  directors,  officers,  employees,
agents,  affiliates  and  assigns)  from and against  all  losses,  liabilities,
damages,  deficiencies,  costs or expenses,  including  interest  and  penalties
imposed or  assessed  by any  judicial  or  administrative  body and  reasonable
attorneys' fees,  whether or not arising out of third-party claims and including
all  amounts  paid in  investigation,  defense or  settlement  of the  foregoing
pursuant to this Section 10 ("Losses")  based upon,  arising out of or otherwise
in respect of any (i) inaccuracy in or breach of any representation, warranty or
covenant of GPC contained  herein,  (ii) adjustment based on the Closing Balance
Sheet per Section 1.6(b) or (iii) in any certificate delivered pursuant hereto.

                  (b)   Subsequent  to  the  Effective   Time,   each  Principal
Stockholder  shall solely to the extent of their  proportionate  interest in the
Escrow Account indemnify and hold harmless Helix,  Acquisition and the Surviving
Corporation  (and  their  respective  directors,  officers,  employees,  agents,
affiliates  and assigns) from and against all Losses based upon,  arising out of
or otherwise in respect of any  inaccuracy  in or breach of any  representation,
warranty or covenant of such Principal  Stockholder  contained  herein or in any
certificate delivered pursuant hereto.

         10.3  Obligation of Helix and  Acquisition to Indemnify.  Subsequent to
the Effective Time, each of Helix and Acquisition  severally agrees to indemnify
and hold harmless the holders of GPC Stock outstanding  immediately prior to the
Effective Time (and their respective  directors,  officers,  employees,  agents,
affiliates  and assigns) from and against any Losses based upon,  arising out of
or otherwise in respect of any  inaccuracy  in or breach of any  representation,
warranty covenant of Helix or Acquisition contained herein or in any certificate
delivered pursuant hereto.

         10.4 Limitations on Indemnification. Notwithstanding the foregoing, the
right to indemnification under this Section 10 shall be subject to the following
terms:

                  (a) No  indemnification  shall be payable  pursuant to Section
10.2 or Section  10.3 unless and to the extent that the amount of all claims for
indemnification  pursuant  to the  applicable  Section  exceeds  $500,000 in the
aggregate,  whereupon indemnification pursuant to such sections shall be payable
for all such claims in excess of that amount.

                  (b) No  indemnification  shall be payable  pursuant to Section
10.2 or Section 10.3 after the earlier of one year after the  Effective  Time or
the  issuance  of  the  first  audited  financial  statements  of  the  combined
corporation (the "Expiration Date"), except with respect to claims made prior to
the Expiration Date but not then resolved.
<PAGE>

                  (c) Except  for claims  arising  out of any  inaccuracy  in or
breach  of  a  representation  or  warranty  of  a  Principal  Stockholder,  all
indemnification  claims  under  Section 10.2 shall be satisfied in full from the
Escrow  Account held  pursuant to the Escrow  Agreement and no person shall have
any right to recovery from any person who was a holder of GPC Stock  immediately
prior to the Effective  Time. In the case of inaccuracy or breach of a Principal
Stockholder  representation or warranty,  Helix and Acquisition may recover from
the Escrow  Account  held  pursuant to the Escrow  Agreement  only that  portion
allocable to the Principal Stockholder responsible for the inaccuracy or breach.

                  (d) The  limitations of Sections  10.4(a),  (b) and (c) (other
than the last  sentence  of  Section  10.4(c))  shall not apply in the case of a
fraudulent  or  intentional  misrepresentation  or breach by any  party,  but no
person  shall be liable  for any such  misrepresentation  or breach by any other
person (except to the extent of its share of the Escrow Account held pursuant to
the Escrow Agreement if such misrepresentation or breach is by GPC).

                  (e) In determining the amount of any indemnity, there shall be
taken into account any tax benefit, insurance proceeds or other similar recovery
or offset realized, directly or indirectly, by the party to be indemnified.

         10.5 Notice and Defense of Claims.  Promptly after receipt of notice of
any  claim,  liability  or  expense  for  which  a party  seeks  indemnification
hereunder,  such party shall give  written  notice  thereof to the  indemnifying
party,  but  such  notification  shall  not be a  condition  to  indemnification
hereunder except to the extent of actual  prejudice to the  indemnifying  party.
The notice shall state the information  then available  regarding the amount and
nature of such claim,  liability or expense and shall  specify the  provision or
provisions  of this  Agreement  under  which  the  liability  or  obligation  is
asserted.  If within 30 days after receiving such notice the indemnifying  party
gives written notice to the indemnified  party stating that it intends to defend
against  such  claim,  liability  or expense at its own cost and  expense,  then
defense of such matter,  including  selection of counsel (subject to the consent
of the  indemnified  party which  consent shall not be  unreasonably  withheld),
shall be by the  indemnifying  party and the  indemnified  party  shall  make no
payment on such claim, liability or expense as long as the indemnifying party is
conducting a good faith and diligent defense. Notwithstanding the foregoing, the
indemnified party shall at all times have the right to fully participate in such
defense at its own expense directly or through counsel;  provided,  however,  if
the named  parties to the action or  proceeding  include  both the  indemnifying
party and the indemnified  party and  representation of both parties by the same
counsel  would be  inappropriate  under  applicable  standards  of  professional
conduct, the expense of separate counsel for the indemnified party shall be paid
by the indemnifying  party. If no such notice of intent to dispute and defend is
given by the  indemnifying  party, or if such diligent good faith defense is not
being or ceases to be conducted,  the indemnified party shall, at the expense of
the  indemnifying  party,  undertake  the  defense of such claim,  liability  or
expense with counsel selected by the indemnified party, and shall have the right
to compromise or settle the same exercising  reasonable  business judgment.  The
indemnified  party shall make available all  information and assistance that the
indemnifying   party  may  reasonably  request  and  shall  cooperate  with  the
indemnifying party in such defense.

<PAGE>

                           SECTION 11 - MISCELLANEOUS


         11.1 Notices.  Any notice or other communication  required or permitted
hereunder  shall be in writing and shall be deemed  given when so  delivered  in
person, by overnight courier, by facsimile  transmission (with receipt confirmed
by  telephone or by automatic  transmission  report) or two business  days after
being sent by registered  or certified  mail (postage  prepaid,  return  receipt
requested), as follows:

                  (a)      if to Helix, to:

                           Helix Technology Corporation
                           Mansfield Corporate Center
                           Nine Hampshire Street
                           Mansfield, MA  02048-9171
                           Attention:       Robert J. Lepofsky, Chief Executive
                                            Officer
                           Telephone:       508/337-5252
                           Facsimile:       508/337-5175

                   with a copy to:

                           Palmer & Dodge LLP
                           One Beacon Street
                           Boston, MA  02108
                           Attention:       William Williams, II
                           Telephone:       617/573-0360
                           Facsimile:       617/227-4420

                  (b)      if to GPC or the Principal Stockholders, to:

                           Granville - Phillips Company
                           5675 Arapahoe Avenue
                           Boulder, CO  80303-1398
                           Attention:       Stephen L. Parrish, Vice President
                                            Strategic Projects
                           Telephone:       303/443-7660
                           Facsimile:       303/443-3835

                  with a copy to:

                           Ireland, Stapleton, Pryor & Pascoe, P.C.
                           1675 Broadway, 26th Floor
                           Denver, CO 80202
                           Attention:       Hardin Holmes
                           Telephone:       303/628-3688
                           Facsimile:       303/623-2062

Any party may by notice given in accordance  with this Section 11.1 to the other
parties designate another address or person for receipt of notices hereunder.
 
         11.2  Entire  Agreement.  This  Agreement  includes  the  exhibits  and
schedules  hereto,  contains the entire agreement among the parties with respect
to the Merger and related  transactions,  and supersedes  all prior  agreements,
written or oral, with respect thereto.
<PAGE>

         11.3     Governing Law.  This Agreement is governed by the laws  of the
 State of Delaware.

         11.4 Binding  Effect;  No Assignment.  This Agreement  shall be binding
upon and inure to the benefit of the parties and their respective successors and
permitted  assigns.  This Agreement is not assignable  without the prior written
consent of the other parties hereto.

         11.5  Variations in Pronouns.  All pronouns and any variations  thereof
refer to the masculine,  feminine or neuter,  singular or plural, as the context
may require.

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

         11.7     Disclosure Schedules.  The Disclosure  Schedules are a part of
this Agreement as if fully set forth herein.

         11.8 Arbitration. If a dispute arises from or relates to this Agreement
or the breach  thereof,  whether of law or fact, of any nature  whatsoever,  and
such dispute cannot be settled through direct  discussions  between the parties,
the parties  agree to settle the dispute by entering  into  binding  arbitration
before the American  Arbitration  Association in accordance  with the commercial
arbitration rules of the Association.  Notice of demand for arbitration shall be
provided  in writing to the other  party.  The  arbitration  shall be  conducted
before a single  arbitrator,  selected  jointly  by the  parties  acting in good
faith. If the parties cannot agree on an arbitrator within 30 days of the giving
of the notice of demand for arbitration,  each party shall select an arbitrator,
and the two selected  arbitrators  shall  determine  the final  arbitrator.  The
arbitrator  shall be a person who is, or has served as, a senior  officer for at
least  three  years of a  company  which  is a  supplier  to the  semi-conductor
industry. The arbitration shall be held in Denver,  Colorado, if it is initiated
by Helix, or Boston, Massachusetts, if it is initiated by GPC. The parties agree
that facts and other information  relating to any arbitration arising under this
Agreement shall be kept confidential to the fullest extent permitted by law. The
fees and  expenses  of any  arbitration  shall be borne by the  parties  in such
proportion  as shall be  determined  by the  arbitrator,  or if there is no such
determination,  then  such  fees and  expenses  shall be  borne  equally  by the
parties.


<PAGE>


         IN WITNESS WHEREOF, the parties have executed this Agreement under seal
as of the date first stated above.

HELIX TECHNOLOGY  CORPORATION
 
By:/s/ Robert J. Lepofsky 
- ------------------------------------------------
Name: Robert J. Lepofsky
Title:  President  and Chief  Executive  Officer

HELIX  ACQUISITION  CORPORATION

By:/s/ Robert J. Lepofsky 
- ------------------------------------------------
Name: Robert J. Lepofsky 
Title:  President 

GRANVILLE-PHILLIPS  COMPANY  

By:/s/ Dr.  Daniel G. Bills 
- ------------------------------------------------
Name:  Dr. Daniel G. Bills 
Title: Chairman



                                       THE PRINCIPAL STOCKHOLDERS:

                                       Gold I Trust



                                       By:/s/ Brian M. Bills
                                            Brian M. Bills

                                       By:/s/ Anita Liane McMillin
                                            Anita Liane McMillin, as Trustees


                                       Gold II Trust



                                       By:/s/ Brian M. Bills
                                            Brian M. Bills

                                       By:/s/ Anita Liane McMillin
                                            Anita Liane McMillin, as Trustees
<PAGE>


                                       Platinum I Trust



                                       By:/s/ Diane L. Paukstis, Trustee
                                            Diane L. Paukstis

                                       By:/s/ Anita Liane McMillin, Trustee
                                            Anita Liane McMillin


                                       Platinum II Trust



                                       By:/s/ Diane L. Paukstis, Trustee
                                            Diane L. Paukstis

                                       By:/s/ Anita Liane McMillin, Trustee
                                            Anita Liane McMillin


                                       Silver I Trust



                                       By:/s/ Brian M. Bills, Trustee
                                            Brian M. Bills

                                       By:/s/ Diane L. Paukstis, Trustee
                                            Diane L. Paukstis


                                       Silver II Trust



                                       By:/s/ Brian M. Bills, Trustee
                                            Brian M. Bills

                                       By:/s/ Diane L. Paukstis, Trustee
                                            Diane L. Paukstis



                                       /s/ Daniel G. Bills
                                       Daniel G. Bills



                                       /s/ Brian M. Bills
                                       Brian M. Bills


<PAGE>

                                       /s/ Diane L. Paukstis
                                       Diane L. Paukstis



                                       /s/ Anita Liane McMillin
                                       Anita Liane McMillin



                                       /s/ Stephen L. Parrish
                                       Stephen L. Parrish



                                       /s/ William A. Ringer
                                       William A. Ringer



                                       /s/ Robert M. Willis
                                       Robert M. Willis



                                       /s/ Michael D. Borenstein
                                       Michael D. Borenstein


<PAGE>


                                 Schedule 1.6(d)

                            Shares Deemed Outstanding

                     GRANVILLE-PHILLIPS COMPANY SHAREHOLDERS

                                                                        Unvested
                                     Voting   Non-Voting               Incentive
                                     Shares    Shares        Total       Shares

Adler, David B.                        400     2,400        2,800         1,400
619 So. Bradford Street
N. Andover, MA 01845
(508) 688-8262

Arnold, Paul Clarke                  2,300    13,800       16,100         4,200
4275 Grinnell Avenue
Boulder, CO 80303
(303) 499-5090

Bills, Brian M.                     13,781    82,686       96,467         2,100
13488 Cascade Street
Broomfield, CO 80020
(303) 438-1098

Bills, Daniel G.                    10,942    14,400       25,342        16,800
460 Lipan Way
Boulder, CO 80303
(303) 484-7086

Bills, June M.                       8,542         0        8,542
460 Lipan Way
Boulder, CO 80303
(303) 494-7086

Black, Steven W.                       825     4,950        5,775
507 South Clarkson Street
Denver, CO 80209
SSN ###-##-####
(303) 295-8519

Borenstein, Michael D.               7,449    44,694       52,143        16,800
7313 Panorama Drive
Boulder, CO 80303
(303) 494-2961

Carolyn R. Bundy                       100       600          700
16 Curtis Court
Broomfield, CO 80020
(303)466-1260


<PAGE>


Bundy, Gordon L. & Carolyn R.          310     1,860        2,170
  as Joint Tenants & Not as
  Tenants in Common
16 Curtis Court
Broomfield, CO  80020

Dix, Scott R.                          500     3,000        3,500
1340 N. Astor St., Apt. 2801
Chicago, IL 60610
(773) 244-3973

Donaldson, Edward E. & Virginia V.   2,500    15,000       17,500
  as Joint Tenants with Right of 
  Survivorship not as Tenants
  in Common
S.E. 500 Water Street
Pullman, WA  99163
(509) 332-0814

Eifler, Norman R. & Elsie B.           645     3,870        4,515
  as Joint Tenants & Not as 
  Tenants in Common
7666 Spring Drive
Boulder, CO 80302
(303) 499-4650

Fiduciary Trust Co. of N.Y.
P.O. Box 3199
Church Street Station
New York, NY 10008

  Dengel & Co.                       1,200     7,200        8,400

Harland, Tamara A.                     240     1,440        1,680
1395 Norwood Avenue
Boulder, CO 80302
(303) 449-6392

Hauser, Daniel F.                    1,150     6,900        8,050
1999 Joslyn Place
Boulder, CO  80302
(303) 443-8352

Howard, Jerry B.                     1,740    10,440       12,180         9,800
6217 Corinth Road
Longmont, CO 80501
(303) 776-6351

Kenigsberg, Kathryn L.               1,175     7,050        8,225
1721 Fairacres Drive
Greeley, CO 80631
(970) 392-0536


<PAGE>


McMillin, Anita Liane (Bills)       15,803    94,818      110,621
12448 Foxton Rd.
Foxton, CO 80441
(303) 816-0987

Mellecker, Richard L.                2,120    12,720       14,840
4620 Pacific Coast Highway
Torrance, CA  90505
(310) 316-7734

Menkick, George F.                      12        72           84
11867 W. 85th Place
Arvada, CO 80005
(303) 431-1738

Miller, Donald R.                    1,400     8,400        9,800
Trustee of the Adeline V. Miller
Family Testamentary Trust
25324 38th Avenue South
Kent, WA 98032
(206) 839-9072

Miller, Donald R.                    1,400     8,400        9,800
Trustee of the Donald R. Miller
Revocable Living Trust, Dated: 
  October 15, 1992
25324 38th Avenue South
Kent, Washington 98032

O'Donoghue-Cooper, Eileen              640     3,840        4,480         1,400
1425 King Avenue
Boulder, CO  80302
(303) 443-7237

Parrish, Stephen L.                  3,071    18,426       21,497         4,200
735 16th Street
Boulder, CO 80302
(303) 939-8664

Paukstis, Diane L. (Bills)          13,864    83,184       97,048
2225 Big Woods Dr.
Batavia, IL 60510
(630) 761-1448

Pingree, J. Frederick, Jr.             100       600          700
2570 E. 1300 S.
Salt Lake City, UT 84108
(801) 582-0291

Purvis, Sheila D.                      180     1,080        1,260
6365 Laodicea Road
Longmont, CO 80503
(303) 651-7496 (H)
(303) 440-2800 (W)
<PAGE>

Ringer, William A.                  10,306    61,836       72,142        16,800
516 Mapleton
Boulder, CO 80304
(303) 444-1420

Skiles, Kristie K.                   1,368     8,208        9,576         5,600
5247 Quail Hollow Court
Boulder, CO  80301
(303) 530-7307

Stewart, William D. III & 
  Charlotte C.                         176     1,056        1,232
  as Joint Tenants & Not as 
  Tenants in Common
2994 75th Street
Boulder, CO 80301
(303) 665-1378

Warren, Keith A. & Betty B.            200     1,200        1,400
  as Joint Tenants with Right
  of Survivorship and Not as
  Tenants in Common
5357 Hickory Avenue
Boulder, CO 80303
(303) 494-6231

Willis, Robert M.                    6,250    37,500       43,750        16,800
2544 Sherborne Drive
Belmont, CA 94002
(408) 727-7162

Gold I Trust                             0    17,084       17,084
  Brian M. Bills and
  Anita Liane McMillin, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303

Gold II Trust                            0    17,084       17,084
  Brian M. Bills and
  Anita Liane McMillin, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303

Platinum I Trust                         0    17,084       17,084
  Diane L. Paukstis and
  Anita Liane McMillin, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303


<PAGE>



Platinum II Trust                        0    17,084       17,084
  Diane L. Paukstis and
  Anita Liane McMillin, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303

Silver I Trust
  Brian M. Bills and                     0    17,084       17,084
  Diane L. Paukstis, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303

Silver II Trust
  Brian M. Bills and                     0    17,084       17,084
  Diane L. Paukstis, Trustees
  Granville-Phillips Company
  5675 Arapahoe Avenue
  Boulder, CO 80303
                                    ------   -------      -------        ------
                                   110,689   664,134      774,823        95,900


<PAGE>





                                  Schedule 5.11

               Stockholder Voting Agreement and Irrevocable Proxy


Gold I Trust
Gold II Trust
Platinum I Trust
Platinum II Trust
Silver I Trust
Silver II Trust
Daniel G. Bills
Brian M. Bills
Diane L. Paukstis
Anita Liane McMillin
Stephen L. Parrish
William A. Ringer
Robert M. Willis
Michael D. Borenstein


<PAGE>


                                  Schedule 5.12

                           Non-Competition Agreements


A.       Key Employees Executing Two-Year Non-Competition Agreements

                  Eileen O'Donoghue-Cooper
                  Kristie K. Skiles
                  Richard L. Mellecker

B.       Major Stockholders Executing Three-Year Non-Competition Agreements

                  Michael D. Borenstein
                  Robert M. Willis
                  William A. Ringer
                  Daniel G. Bills
                  Brian M. Bills
                  Stephen L. Parrish
                  Jerry B. Howard
                  Paul C. Arnold


<PAGE>


                                  Schedule 5.13

                 Patent and Confidential Information Agreements



Paul C. Arnold
Brian M. Bills
Daniel G. Bills
Stephen C. Blouch
Michael Borenstein
Steven C. Borichevsky
Albert R. Filippelli
Jerry B. Howard
James G. Lindgren
Stephen L. Parrish
William A. Ringer
Richard M. Roth
Ronald P. Rudiak



 

                          REGISTRATION RIGHTS AGREEMENT

         This  Registration  Rights Agreement dated as of May 7, 1998 is between
Helix Technology  Corporation (the "Company"),  a Delaware corporation,  and the
persons  named on Schedule A attached  hereto who have  executed and delivered a
Stockholder  Letter (the  "Holders").  This  Agreement  is made  pursuant to the
Agreement and Plan of Merger dated as of April 16, 1998 (the "Merger Agreement")
among the  Company,  Helix  Acquisition  Corporation  ("Acquisition  Corp."),  a
Washington corporation and wholly-owned  subsidiary of the Company,  Granville -
Phillips  Company  ("GPC"),   a  Washington   corporation,   and  the  principal
stockholders  of GPC  named  therein.  The  Merger  Agreement  provides  for the
Company's  acquisition of GPC through the merger of Acquisition  Corp.  into GPC
(the  "Merger")  and the exchange by the Holders of their shares of common stock
of GPC for shares of common stock of the Company (the "Helix Shares").  In order
to induce GPC to enter  into the Merger  Agreement,  the  Company  has agreed to
provide the Holders with the registration rights set forth in this Agreement.

         The parties hereto agree as follows:

         Section 1.  Definitions.  As used in this Agreement, the following 
terms have the following meanings:

         "Commission" means the United States Securities and Exchange 
Commission.

         "Exchange  Act" means the  Securities  Exchange Act of 1934, as amended
from time to time, and the rules and regulations of the Commission thereunder.

         "Prospectus"   means  the  prospectus   included  in  any  Registration
Statement   (including,   without   limitation,   a  prospectus  that  discloses
information  previously  omitted from a prospectus filed as part of an effective
registration  statement in reliance upon Rule 430A under the Securities Act), as
amended  or  supplemented  by  any  prospectus  supplement,  and  by  all  other
amendments  and   supplements  to  the  prospectus,   including   post-effective
amendments, and in each case including all material incorporated by reference or
deemed to be incorporated by reference in such prospectus.

         "Registration  Statement"  means  any  registration  statement  of  the
Company that covers any of the Helix Shares  pursuant to the  provisions of this
Agreement and all amendments and supplements to any such registration statement,
including post-effective  amendments, in each case including the Prospectus, all
exhibits,   and  all  material   incorporated  by  reference  or  deemed  to  be
incorporated by reference in such registration statement.

         "Securities Act" means the Securities Act of 1933, as amended from time
to time, and the rules and regulations of the Commission thereunder.
<PAGE>

         Section 2.  Resale Registration.

         (a) As soon as practicable after the effective date of the Merger,  the
Company  will  file a  Registration  Statement  on  Form  S-3  (or  any  similar
registration  statement  then in effect) under the  Securities  Act covering the
resale  by each  Holder  of such  Holder's  Helix  Shares  from  time to time in
transactions  not involving an underwritten  public offering and will thereafter
use  reasonable  efforts  to cause the  Registration  Statement  to be  declared
effective by the  Commission as soon as  practicable  thereafter and to keep the
Registration  Statement continuously effective until the earlier of (x) the date
on which the  Holder no longer  holds  any  Helix  Shares  registered  under the
Registration  Statement  or (y) the date on which the Helix  Shares would become
eligible for sale pursuant to Rule 144 (or any similar provision then in effect)
under the Securities Act without  regard to any tolling  provisions  that may be
applicable. In this connection:

                  (i) The  Company  will  promptly  (subject  to  Section  2(b))
         prepare and file with the Commission such amendments and post-effective
         amendments  to the  Registration  Statement as may be necessary to keep
         the Registration  Statement  effective for as long as such registration
         is required to remain effective hereunder; will cause the Prospectus to
         be  supplemented  by any  required  Prospectus  supplement,  and, as so
         supplemented,  to be filed  pursuant  to Rule 424 under the  Securities
         Act;  and  will  comply  with  the  provisions  of the  Securities  Act
         applicable  to it with respect to the  disposition  of all Helix Shares
         covered by such Registration  Statement during the applicable period in
         accordance with the intended  methods of disposition by the Holders set
         forth in the Registration Statement or supplement to the Prospectus.

                  (ii) The  Company  will  promptly  furnish to each Holder such
         number  of  copies  of  the  Prospectus   (including  each  preliminary
         Prospectus) and any amendments or supplements thereto as the Holder may
         reasonably  request in order to  facilitate  the  public  sale or other
         disposition of the Helix Shares being sold by the Holder.

                  (iii) The Company  will,  on or prior to the date on which the
         Registration Statement is declared effective, use reasonable efforts to
         register  or  qualify  the Helix  Shares  covered  by the  Registration
         Statement under such other securities or "blue sky" laws of such states
         of the United States as any Holder requests;  provided,  however,  that
         the Company  shall not be required to qualify  generally to do business
         in any jurisdiction where it would not otherwise be required to qualify
         or to file any general consent to service of process.

                  (iv) The Company will timely file all documents required to be
         filed by it under the Exchange Act.

                  (v) The Company will  promptly  give notice to each Holder (1)
         when the  Prospectus or any  Prospectus  supplement  or  post-effective
         amendment  has  been  filed  and,  with  respect  to  the  Registration
         Statement  or any  post-effective  amendment,  when the same has become
         effective, (2) of any request by the Commission or any state securities
         authority for amendments and supplements to the Registration  Statement
         and Prospectus or for  additional  information  after the  Registration

<PAGE>

         Statement has become  effective,  (3) of the issuance by the Commission
         of any stop order  suspending  the  effectiveness  of the  Registration
         Statement,  (4) of the issuance by any state  securities  commission or
         other regulatory authority of any order suspending the qualification or
         exemption  from  qualification  of any of the Helix  Shares under state
         securities  or "blue  sky" laws and (5) of the  happening  of any event
         which makes any statement made in the Registration Statement or related
         Prospectus  untrue or which  requires  the making of any changes in the
         Registration  Statement or Prospectus so that they will not 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 were made, not
         misleading.   As  soon  as  practicable  following  expiration  of  the
         Suspension Period (as defined below), the Company will prepare and file
         with the  Commission  and furnish a  supplement  or  amendment  to such
         Prospectus so that, as thereafter  deliverable to the purchasers of the
         Helix Shares,  such Prospectus will not contain any untrue statement of
         a material fact or omit to state a material fact  necessary to make the
         statement therein,  in light of the circumstances under which they were
         made, not misleading.

         (b) Upon receipt of a notice  under  clauses (2) through (5) of Section
2(a)(iv)  (a  "Suspension  Notice"),  each  Holder  will  forthwith  discontinue
disposition of the Helix Shares pursuant to the Registration Statement until the
Holder's  receipt  of the  copies  of the  supplemented  or  amended  Prospectus
contemplated by Section  2(a)(iv) or until the Holder is advised in writing (the
"Advice") by the Company that the use of the Prospectus may be resumed,  and has
received copies of any additional or supplemental filings which are incorporated
by reference in the Prospectus,  and, if so directed by the Company,  the Holder
will deliver to the Company (at the  Company's  expense) all copies,  other than
permanent  file  copies  then  in the  Holder's  possession,  of the  Prospectus
covering  the  Helix  Shares  current  at the time of  receipt  of such  notice;
provided,  however,  that in no event will the period from the date on which any
holder  receives a  Suspension  Notice to the date on which any Holder  receives
either  the  Advice  or  copies  of  the  supplemented  or  amended   Prospectus
contemplated by Section 2(a)(iv) (the "Suspension Period") exceed 90 days.

         Section 3.  Registration  Expenses.  The Company will bear all expenses
incurred in connection  with the  registration  of the Helix Shares  pursuant to
Section 2,  including  without  limitation  all printing,  legal and  accounting
expenses incurred by the Company and all registration and filing fees imposed by
the Commission,  any state  securities  commission or The Nasdaq National Market
or,  if the  common  stock of Helix is not then  listed on The  Nasdaq  National
Market, the principal national  securities exchange or national market system on
which the common stock is then traded or quoted. Each Holder will be responsible
for  any  brokerage  commissions  and  taxes  of any  kind  (including,  without
limitation, transfer taxes) with respect to any disposition, sale or transfer of
the  Holder's  Helix  Shares and for any legal,  accounting  and other  expenses
incurred by the Holder.

         Section 4.  Indemnification.

         (a) Indemnification by the Company. The Company agrees to indemnify and
hold harmless,  to the full extent permitted by law, each Holder,  its partners,
officers,  directors,  trustees,  stockholders,  employees and agents,  and each
person who controls such Holder  within the meaning of either  Section 15 of the
Securities  Act or Section 20 of the Exchange  Act, or is under  common  control

<PAGE>

with, or is controlled by, such Holders,  together with the partners,  officers,
directors,  trustees,  stockholders,  employees  and agents of such  controlling
person (collectively,  the "Controlling Persons"),  from and against all losses,
claims,  damages,   liabilities  and  expenses,   including  without  limitation
reasonable  legal  fees  and  expenses  incurred  by  any  Holder  or  any  such
Controlling Person documented in writing, (collectively, the "Damages") to which
such  Holder  and any such  Controlling  Persons  may become  subject  under the
Securities Act or otherwise,  insofar as such Damages (or proceedings in respect
thereof) arise out of or are based upon any untrue or alleged  untrue  statement
of material  fact  contained in the  Registration  Statement  (or any  amendment
thereto),  or caused by any  omission  or alleged  omission  to state  therein a
material  fact  necessary  to  make  the  statements  therein  in  light  of the
circumstances under which they were made not misleading, or caused by any untrue
statement  or alleged  untrue  statement  of a material  fact  contained  in any
Prospectus (as amended or  supplemented  if the Company shall have furnished any
amendments  or  supplements  thereto),  or caused  by any  omission  or  alleged
omission  to state  therein a material  fact  necessary  to make the  statements
therein in light of the circumstances under which they were made not misleading,
except  insofar as such  Damages  arise out of or are based upon any such untrue
statement or omission based upon  information  relating to such Holder furnished
in writing to the Company by such Holder specifically for use therein; provided,
however,  that the Company  shall not be liable to any Holder under this Section
4(a) to the  extent  that any such  Damages  were  caused  by the fact that such
Holder  sold Helix  Shares to a person as to whom it shall be  established  that
there was not sent or given,  at or prior to the  written  confirmation  of such
sale, a copy of the Prospectus as then amended or  supplemented  if, and only if
(i) the Company has previously  furnished copies of such amended or supplemented
Prospectus  to such  Holder  and (ii) such  Damages  were  caused by any  untrue
statement or omission or alleged untrue  statement or omission  contained in the
Prospectus  so delivered  which was  corrected  in such amended or  supplemented
Prospectus.

         (b) Indemnification by the Holders.  Each Holder agrees,  severally and
not jointly, to indemnify and hold harmless the Company, its directors, officers
and each person,  if any, who controls the Company  within the meaning of either
Section 15 of the  Securities  Act or Section 20 of the Exchange Act to the same
extent as the foregoing indemnity from the Company to such Holder, but only with
reference  to  information  relating to such Holder  furnished in writing to the
Company by such Holder  specifically for use in the  Registration  Statement (or
any  amendment  thereto)  or any  Prospectus  (or any  amendment  or  supplement
thereto);  provided, however, that such selling Holder shall not be obligated to
provide such  indemnity to the extent that such Damages  result from the failure
of the Company to promptly  amend or take  action to correct or  supplement  the
Registration  Statement or Prospectus on the basis of corrected or  supplemental
information  provided by such Holder to the Company  expressly for such purpose.
In no event  shall the  liability  of any Holder of Helix  Shares  hereunder  be
greater in amount than the amount of the  proceeds  received by such Holder upon
the sale of the Helix Shares giving rise to such indemnification obligation.

         (c)  Procedure.  Each  party  entitled  to  indemnification  under this
Section 4 (the "Indemnified  Party") shall give prompt notice of any claim as to
which   indemnification   may  be  sought  to  the  party  required  to  provide
indemnification (the "Indemnifying  Party"),  provided that failure to give such
notice shall not relieve the  Indemnifying  Party of its  obligations  hereunder
except to the  extent of  actual  prejudice.  The  Indemnifying  Party  shall be
entitled  to assume  the  defense  of any such  claim  with  counsel  reasonably
satisfactory to the Indemnified  Party. The Indemnified Party may participate in

<PAGE>

such defense at its own expense,  provided that the Indemnifying  Party will pay
such expense if  representation of the Indemnified Party by the counsel retained
by the  Indemnifying  Party would be  inappropriate  due to actual or  potential
differing   interests   between  the  Indemnified  Party  and  any  other  party
represented by such counsel in such  proceeding.  No  Indemnifying  Party shall,
except with the consent of the Indemnified  Party,  agree to any settlement that
does not  include a release  of the  Indemnified  Party  from all  liability  in
respect of such  claim,  and the  Indemnified  Party shall not settle such claim
without the prior written consent of the Indemnifying Party.

         Section 5.  Miscellaneous.

         (a) Amendments and Waivers. This Agreement may not be amended, modified
or supplemented except in writing signed by the party to bound thereby.

         (b)  Notices.  All notices  and other  communications  provided  for or
permitted  hereunder  shall be in writing  and shall be deemed to have been duly
given if delivered  personally  or sent by  telecopier,  registered or certified
mail (return  receipt  requested),  postage prepaid or courier to the parties at
their  respective  addresses set forth on the signature pages hereof (or at such
other address for any party as shall be specified by like notice,  provided that
notices of a change of address  shall be effective  only upon receipt  thereof).
All such notices and communications shall be deemed to have been received at the
time delivered by hand, if personally delivered;  five business days after being
deposited in the mail, postage prepaid, if mailed; when receipt is acknowledged,
if  telecopied;  and on the next  business day if timely  delivered to a courier
guaranteeing overnight delivery.

         (c) Successors and Assigns.  This Agreement  shall inure to the benefit
of and be binding upon the  successors  and assigns of the Company and the heirs
and legal  representatives of the Holders. This Agreement may not be assigned by
any Holder and any attempted assignment shall be void and of no effect and shall
terminate all obligations of the Company hereunder with respect to such Holder.

         (d)  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts and by the parties hereto in separate  counterparts,  each of which
when so  executed  shall be  deemed  to be an  original  and all of which  taken
together shall constitute the same agreement.

         (e) Headings.  The headings in this  Agreement are for  convenience  of
reference only and shall not limit or otherwise affect the meaning hereof.

         (f) Governing Law. This Agreement  shall be governed by the laws of the
Commonwealth of Massachusetts without regard to principles of conflicts of law.



<PAGE>


         IN WITNESS WHEREOF,  the parties have caused this  Registration  Rights
Agreement to be executed as of the date stated above.

                                    THE COMPANY:

                                    HELIX TECHNOLOGY CORPORATION
                                    Mansfield Corporate Center
                                    Nine Hampshire Street
                                    Mansfield, MA 02048-9171



                                    By:/s/ Robert J. Lepofsky
                                       Robert J. Lepofsky
                                       President and Chief Executive Officer


<PAGE>


                                   SCHEDULE A

                             Holders of Helix Shares


                           David B. Adler

                           Paul Clarke Arnold

                           Brian M. Bills

                           Daniel G. Bills

                           June M. Bills

                           Steven W. Black

                           Michael D. Borenstein

                           Carolyn R. Bundy

                           Gordon L. & Carolyn R. Bundy
                            as Joint Tenants & Not
                            as Tenants in Common

                           Scott R. Dix

                           Edward E. & Virginia V. Donaldson
                            as Joint Tenants with Right
                            of Survivorship

                           Norman R. & Elsie B. Eifler
                            as Joint Tenants & Not as
                            Tenants in Common

                           Fiduciary Trust Co. of N.Y.,
                           Degel & Co.

                           Tamara A. Harland

                           Daniel F. Hauser

                           Jerry B. Howard

                           Kathryn L. Kenigsberg

                           Anita Liane (Bills) McMillin

                           Richard L. Mellecker
<PAGE>

                           George F. Menkick

                           Donald R. Miller, Trustee
                            of the Adeline V. Miller
                            Family Testamentary Trust

                           Donald R. Miller, Trustee
                            of the Donald R. Miller
                            Revocable Living Trust,
                            Dated: October 15, 1992

                           Eileen O'Donoghue-Cooper

                           Stephen L. Parrish

                           Diane L. (Bills) Paukstis

                           J. Frederick Pingree, Jr.

                           Sheila D. Purvis

                           William A. Ringer

                           Kristie K. Skiles

                           William D. III & Charlotte C.
                            Stewart, as Joint Tenants &
                            Not as Tenants in Common

                           Keith A. & Betty B. Warren
                            as Joint Tenants with
                            Right of Survivorship and
                            Not as Tenants in Common

                           Robert M. Willis

                           Gold I Trust
                            Brian M. Bills and Anita
                            Liane McMillin, Trustees

                           Gold II Trust
                            Brian M. Bills and Anita
                            Liane McMillin, Trustees
<PAGE>

                           Platinum I Trust
                            Diane L. Paukstis and
                            Anita Liane McMillin, Trustees

                           Platinum II Trust
                            Diane L. Paukstis and
                            Anita Liane McMillin, Trustees

                           Silver I Trust
                            Brian M. Bills and Diane L. Paukstis,
                            Trustees

                           Silver II Trust
                            Brian M. Bills and Diane L. Paukstis,
                            Trustees



                                ESCROW AGREEMENT

         THIS ESCROW  AGREEMENT  is made and entered  into on May 7, 1998 by and
among  Helix  Technology  Corporation,  a Delaware  corporation  ("Helix"),  and
Stephen L. Parrish,  as the representative of the stockholders (the "Stockholder
Representative")  of the  Granville-Phillips  Company, a Washington  corporation
("GPC"),  and State Street Bank and Trust Company,  as escrow agent (the "Escrow
Agent").

         WHEREAS, pursuant to the Agreement and Plan of Merger dated as of April
16,  1998  (the  "Merger  Agreement")  by and  among  Helix,  Helix  Acquisition
Corporation,  a Washington corporation and wholly owned subsidiary of Helix, GPC
and certain  stockholders of GPC, Helix Acquisition  Corporation has been merged
into GPC (the "Merger"). Capitalized terms used herein and not otherwise defined
have the meanings assigned to them in the Merger Agreement.

         WHEREAS,  pursuant to Section 1.12 of the Merger Agreement, one hundred
nineteen thousand one hundred forty-five  (119,145) shares of Helix Common Stock
(the "Escrow Shares") are being deposited by Helix on behalf of the Stockholders
(the  "Stockholders")  of GPC  hereunder to provide for the  indemnification  of
Helix under Section 10, of the Merger Agreement.  A list of all Stockholders and
their pro rata interest in the Escrow Shares is attached hereto as Schedule I.

         NOW THEREFORE, the parties hereto agree as follows:

         1. Establishment of Escrow. Helix has delivered to the Escrow Agent and
the Escrow  Agent  acknowledges  receipt  of the Escrow  Shares in the form of a
single stock certificate.  The Escrow Shares shall be held in escrow in the name
of the Escrow  Agent or its  nominee,  subject to the terms and  conditions  set
forth  herein.  Unless and until the  Escrow  Shares  are  returned  to Helix or
distributed to the  Stockholders  pursuant to the terms of this  Agreement,  the
Escrow  Agent  shall  vote the  Escrow  Shares in  accordance  with the  written
instructions  of the  Stockholders  as to their pro rata  interest in the Escrow
Fund as set forth in Schedule I.

         2. Amounts Earned on Escrow Shares; Tax Matters.  All amounts earned on
the Escrow Shares (cash dividends and other  distributions) shall be distributed
pro rata to the  Stockholders  from time to time upon request of the Stockholder
Representative.  The parties  agree that to the extent  permitted by  applicable
law,  earnings  will be  allocatable  for tax  purposes to the  Stockholders  in
proportions  to their  holdings  and the  Stockholders  will include all amounts
earned on the Escrow  Shares in their gross income for federal,  state and local
income  tax  (collectively,  "income  tax")  purposes  and  pay any  income  tax
resulting  therefrom.  The parties agree that the Escrow Agent will be furnished
with all  information  necessary to enable it to comply with the  reporting  and
backup  withholding  requirements  of the  Internal  Revenue  Code of  1986,  as
amended.
<PAGE>

         3.       Claims Against Escrow Shares.

                  (a) At any time or  times  prior  to the  Expiration  Date (as
defined below),  Helix may make claims against the Escrow Shares for amounts due
for indemnification under Section 10 of the Merger Agreement. Helix shall notify
the  Stockholder  Representative  and the  Escrow  Agent in writing of each such
claim,  including  a brief  description  of the amount and nature of such claim.
Each  such  notice  delivered  to the  Escrow  Agent by Helix  shall  contain  a
representation  of Helix to the effect  that Helix has  delivered a copy of such
notice to the Stockholder  Representative  prior to or  simultaneously  with its
delivery to the Escrow Agent.  In the event that the amount subject to the claim
is unliquidated,  Helix shall make a good faith estimate as to the amount of the
claim for purposes of determining  the number of Escrow Shares to be withheld by
the Escrow Agent if such claim is not resolved or otherwise  adjudicated  by the
Expiration  Date. If the  Stockholder  Representative  disputes such claim,  the
Stockholder Representative shall give written notice thereof to Helix and to the
Escrow  Agent  within  thirty  days after the date  Helix's  notice of claim was
delivered  to the  Stockholder  Representative,  in which case the Escrow  Agent
shall  continue to hold the Escrow Shares in  accordance  with the terms of this
Agreement; otherwise, such claim shall be deemed to have been acknowledged to be
payable from the Escrow Shares in the full amount set forth in the claim and the
Escrow  Agent  shall  pay  such  claim to  Helix  as soon as  practicable  after
expiration of that thirty-day period. The Escrow Agent shall effect such payment
of Escrow  Shares to Helix by  surrendering  the  certificate  representing  the
Escrow Shares to Helix's  transfer agent for cancellation  with  instructions to
issue a new  certificate  to the Escrow  Agent for the  number of Escrow  Shares
remaining  after  giving  effect  to such  payment.  If the  amount of the claim
exceeds the aggregate value of the Escrow Shares, the Escrow Agent shall have no
liability  or  responsibility  for any  deficiency.  The  value per share of the
Escrow Shares for purposes of this Agreement  shall be $20.00 (the "Agreed Share
Value").  All  claims  paid out of the  Escrow  Shares  shall be  rounded to the
nearest  whole  share.  Under no  circumstances  shall the  Stockholders  or the
Stockholder  Representative  have any right to substitute other property for the
Escrow Shares or to change the Agreed Share Value.

                  (b) If the  Stockholder  Representative  gives notice to Helix
and the Escrow  Agent  pursuant  to Section  3(a)  disputing a Helix  claim,  no
distribution  of Escrow  Shares shall be made by the Escrow Agent to Helix or to
the Stockholders of the Set Aside Amount under Section 4(a) with respect to such
claim until either (i) such  disputed  claim has been resolved as evidenced by a
written notice executed by Helix and the Stockholder  Representative instructing
the  Escrow  Agent as to the  distribution  of such Set Aside  Amount or portion
thereof or (ii) such dispute shall have been  adjudicated in accordance with the
arbitration procedures described in Section 4(b).
<PAGE>

         4.       Disputed Claims.

                  (a)   If   the   Stockholder    Representative   disputes   an
indemnification  claim of Helix as above  provided and subject to Section 3, the
Escrow Agent shall  allocate a portion of the Escrow  Shares equal to the amount
of the claim as set forth in the notice of the claim  (the "Set Aside  Amount").
In the  event  Helix  notifies  the  Escrow  Agent in  writing  that it has made
out-of-pocket  expenditures or anticipates  that it will incur legal expenses in
connection  with any such disputed claim with respect to which it is entitled to
be indemnified under the Merger Agreement, a portion of the Escrow Fund equal to
such  incurred or  anticipated  expenditures  as set forth in such  notification
shall also be added to and become a part of the Set Aside Amount,  provided that
in the event that it shall be agreed (as evidenced by a written notice  executed
by Helix and the  Stockholder  Representative  as described in Section  3(b)) or
determined  through an  arbitration  proceeding  described  in Section 4(b) that
Helix is not entitled to indemnification with respect to such claim, Helix shall
not be entitled to such shares.

                  (b) If the  Escrow  Agent  does  not  receive  written  notice
executed by Helix and the Stockholder Representative within sixty days after the
Stockholder  Representative  sends notice of such dispute to the effect that the
disputed  indemnification  claim has been resolved,  the  indemnification  claim
shall be  referred  to an  arbitrator  chosen by  agreement  of the  Stockholder
Representative and Helix. If no agreement is reached regarding  selection of the
arbitrator  within  thirty days after  written  request from either party to the
other, Helix or the Stockholder  Representative may submit the matter in dispute
to the American Arbitration Association, to be settled by arbitration in Boston,
Massachusetts  in  accordance  with  the  commercial  arbitration  rules  of the
Association. Helix and the Stockholder Representative agree to act in good faith
to mutually  select an  arbitrator.  The fees and expenses of the arbitrator for
any arbitration shall be borne by the Stockholders and Helix in such proportions
as shall be determined by the arbitrator,  or if there is no such determination,
then such fees and  expenses  shall be borne  equally  by the  Stockholders  and
Helix.  The  determination  of the  arbitrator as to the amount,  if any, of the
indemnification claim that is properly allowable shall be conclusive and binding
upon the parties hereto and judgment may be entered  thereon in any court having
jurisdiction.  The Escrow Agent shall make payment of such claim to Helix out of
the  Set  Aside  Amount  and  make  payment  of the  fees  and  expenses  of the
arbitration out of the Escrow Fund, in each case as and to the extent allowed as
soon as  practicable  following its receipt of a copy of the  arbitration  award
determination.

         5.       Termination.

                  (a) On the earlier of (i) the first anniversary of the Closing
Date (as defined in the Merger Agreement),  or (ii) delivery to the Escrow Agent
of the completed  next audited  financial  statements of Helix (the  "Expiration
Date"),  the Escrow Agent shall  deliver the Escrow  Shares to the  Stockholders
according to their pro rata  interests as set forth on Schedule I, provided that
in the event that the Escrow  Agent has  received  notice  pursuant to Section 3
above made prior to the  Expiration  Date,  but not  resolved by the  Expiration
Date,  the Escrow  Agent shall  retain and continue to hold in escrow the Escrow
Shares  having a value based on the Agreed  Share Value not greater  than 15% of
the amount of the indemnification claim for which notice had been received.
<PAGE>

                  (b) Any  portion of the Escrow  Shares  retained by the Escrow
Agent after the earlier of (i) the first anniversary of the Closing Date or (ii)
the Expiration  Date,  shall continue to be so retained until such time or times
as the Escrow Agent shall receive (1) a joint written instrument signed by Helix
and the Stockholder  Representative in which case the Escrow Agent shall proceed
in  accordance  with  such  joint  written  instruction,  or (2)  notice  that a
judgment,  order or decree has been entered or made by any court  affecting  the
Escrow Shares which in the opinion of legal  counsel  chosen by the Escrow Agent
is  binding  upon  the  Escrow  Agent  and not  subject  to  further  appeal  or
modification before compliance is required  therewith,  in which case the Escrow
Agent shall release and deliver the Escrow Shares to the  Stockholders  or Helix
in compliance with such judgment, and this Agreement shall terminate.

         6.       The Escrow Agent.

                  (a)  Notwithstanding  anything  herein  to the  contrary,  the
Escrow Agent shall  promptly  dispose of all or any part of the Escrow Shares as
directed  by a writing  jointly  signed by the  Stockholder  Representative  and
Helix.  The reasonable  fees and expenses of the Escrow Agent in connection with
its  execution  and  performance  of this  Agreement as set forth on Schedule II
hereto shall be borne by Helix. The Escrow Agent shall not be liable for any act
or failure  to act under  this  Agreement,  including  any and all  claims  made
against the Escrow Agent as a result of its holding the Escrow Shares in its own
name,  except for its own gross  negligence  or willful  misconduct.  The Escrow
Agent  shall not be liable  for,  and Helix and the  Stockholders  shall  agree,
jointly and  severally,  to indemnify and hold harmless the Escrow Agent and its
directors,  employees,  officers,  agents,  successors and assigns against,  any
losses or claims (including reasonable out-of-pocket expenses and attorney fees)
arising  out of any  action  taken  or  omitted  in  good  faith  hereunder  and
reasonable  costs of  investigation  and counsel fees and expenses  which may be
imposed on the Escrow Agent or reasonably  incurred by it in connection with its
acceptance of this  appointment  or  performance  of its duties  hereunder.  The
Escrow Agent may decline to act and shall not be liable for failure to act if in
doubt as to its duties under this  Agreement.  The Escrow Agent may act upon any
instrument  or  signature  believed  by it to be genuine and may assume that any
person  purporting  to give any  notice  or  instruction  hereunder,  reasonably
believed by it to be authorized,  has been duly  authorized to do so. The Escrow
Agent's  duties shall be determined  only with  reference to this  Agreement and
applicable  law and the Escrow  Agent is not charged  with  knowledge  of or any
duties or  responsibilities  in connection with any other document or agreement,
including without limitation, the Merger Agreement.

                  (b) The  Escrow  Agent  shall  have  the  right at any time to
resign  hereunder by giving  written  notice of its  resignation  to the parties
hereto,  at the  addresses  set forth  herein or at such  other  address  as the
parties shall provide, at least thirty days prior to the date specified for such
resignation  to take effect.  In such event Helix shall with the approval of the
Stockholder  Representative,  which approval shall not be unreasonably withheld,
appoint a successor  escrow agent within that thirty-day  period;  if Helix does
not designate a successor escrow agent within such period,  the Escrow Agent may
appoint a successor escrow agent.  Upon the effective date of such  resignation,
the Escrow Fund then held by the Escrow Agent hereunder shall be delivered by it
to such successor escrow agent or as otherwise shall be designated in writing by
Helix and the Stockholder Representative.
<PAGE>

                  (c) In the event that the Escrow  Agent  should at any time be
confronted  with  inconsistent  or  conflicting  claims or  demands by the other
parties hereto,  the Escrow Agent shall have the right to interplead the parties
in any  Massachusetts  court or any court of competent  jurisdiction and request
that such court  determine the respective  rights of the parties with respect to
this  Agreement  and, upon doing so, the Escrow Agent shall be released from any
obligations  or  liability  to the other  parties as a  consequence  of any such
claims or demands.

                  (d)  The  Escrow  Agent  may  execute  any  of its  powers  or
responsibilities hereunder and exercise any rights hereunder, either directly or
by or through its agents or attorneys. Nothing in this Agreement shall be deemed
to impose upon the Escrow  Agent any duty to qualify to do business or to act as
fiduciary  or  otherwise  in any  jurisdiction  other than the  Commonwealth  of
Massachusetts.  The Escrow Agent shall not be  responsible  for and shall not be
under a duty to examine, inquire into or pass upon the validity, binding effect,
execution or  sufficiency  of this  Agreement or of any  amendment or supplement
hereto.

         7.       Stockholder Representative.

                  (a) In the event the Stockholder  Representative  shall die or
resign or otherwise terminate his status as such, his successor shall be Kristie
K. Skiles or such other person as the Stockholder Representative may appoint. If
the  successor  Stockholder  Representative  shall die or  resign  or  otherwise
terminate  his status as such,  his successor  shall be any person  appointed by
such  successor  Stockholder  Representative  or, in the case of his  failure to
appoint a  successor  after a vacancy has been  created,  elected by the vote or
written consent of a majority in interest of the Stockholders.  All decisions of
the  Stockholder  Representative  shall be binding  upon the  Stockholders.  The
Stockholder  Representative  shall keep the Stockholders  reasonably informed of
his or her material decisions.

                  (b) The Stockholder  Representative  is authorized to take any
action deemed by him  appropriate  or necessary to carry out the  provisions of,
and to  determine  the  rights of the  Stockholders  under this  Agreement.  The
Stockholder  Representative shall serve as the agent of the Stockholders for all
purposes  related to this Agreement,  including  without  limitation  service of
process upon the Stockholders.  By execution of this Agreement,  the Stockholder
Representative  accepts  and  agrees to  diligently  discharge  the  duties  and
responsibilities  of the Stockholder  Representative set forth in this Agreement
without   compensation  for  his  services  hereunder.   The  authorization  and
designation of the Stockholder  Representative  under this Section 7(b) shall be
binding  upon the  successors  and  assigns of each  Stockholder.  Helix and the
Escrow Agent shall be entitled to rely upon such  authorization  and designation
and shall be fully protected in dealing with the Stockholder Representative, and
shall  have no duty to  inquire  into the  authority  of any  person  reasonably
believed by any of them to be the Stockholder Representative.

                  (c) The Stockholder  Representative (i) shall not be liable to
any of the Stockholders for any error of judgment, or action taken or omitted in
good faith, or mistake of fact or law unless caused by his own gross  negligence
or willful misconduct,  (ii) shall be entitled to treat as genuine any letter or
other document  furnished to him by Helix,  the Stockholders or the Escrow Agent

<PAGE>

and  believed by him to be genuine and to have been signed and  presented by the
proper party or parties, and (iii) shall be reimbursed,  upon presentation of an
invoice,  from the Escrowed Shares,  in an amount  sufficient after sale of such
released  shares,  to pay all  counsel  fees and  other  out-of-pocket  expenses
incurred by the Stockholder Representative in connection with this Agreement.

                  (d) The Stockholder  Representative,  warrants and agrees that
he  is  authorized  to  execute  this   agreement  for  and  on  behalf  of  the
Stockholders.

         8.  Governing  Law.  This  Agreement  is  governed  by the  laws of the
Commonwealth of Massachusetts  without regard to its conflict of law provisions,
and shall inure to the benefit of and be binding upon the  successors,  assigns,
heirs and personal representatives of the parties hereto.

         9.       Counterparts.  This Agreement may  be  executed in two or more
counterparts,  all of  which  documents  shall  be  considered  one and the same
document.

         10. Notices.  Any notice or other  communication  required or permitted
hereunder  shall be in  writing  and shall be deemed  given  when  delivered  in
person, by overnight courier, by facsimile  transmission (with receipt confirmed
by telephone or by automatic  transmission  report) or five  business days after
being sent by registered  or certified  mail (postage  prepaid,  return  receipt
requested), as follows:

        (a)      if to Helix, to:

                          Helix Technology Corporation
                          Mansfield Corporate Center
                          Nine Hampshire Street
                          Mansfield, MA  02048
                          Attention:  Robert J. Lepofsky Chief Executive Officer
                          Telecopy:  (508) 337-5175

                 with a copy to:

                          Palmer & Dodge LLP
                          One Beacon Street
                          Boston, MA  02108-3190
                          Attention:  William Williams II
                          Telecopy:  (617) 227-4420

        (b)      if to the Stockholder Representative:

                          Granville-Phillips Company
                          5675 Arapahoe Avenue
                          Boulder, CO 80303-1398
                          Attention:  Stephen L. Parrish
                          Telecopy:  (303) 443-3835

                 with a copy to:

          Ireland, Stapleton, Pryor & Pascoe, P.C.
                          1675 Broadway, 26th Floor
                          Denver, CO 80202
                          Attention:  Hardin Holmes
                          Telecopy:  (303) 623-2062
<PAGE>

        (c)      if to the Escrow Agent:

                          State Street Bank and Trust Company
                          Corporate Trust
                          Two International Place
                          Boston, MA  02110
                          Attention:       Ron Chin
                          Telecopy:        (617) 664-5365

Any party may by  notice  given in  accordance  with this  section  to the other
parties designate another address or person for receipt of notices hereunder.

                  [Remainder of Page Intentionally Left Blank]


<PAGE>


                  IN WITNESS  WHEREOF,  the parties have executed this Agreement
on the date first above written.

           HELIX TECHNOLOGY CORPORATION



           By:   /s/ Robert J. Lepofsky
                 Robert J. Lepofsky
                 President and Chief Executive Officer



           STOCKHOLDER REPRESENTATIVE:



           /s/ Stephen L. Parrish
           Stephen L. Parrish



           THE ESCROW AGENT:

           STATE STREET BANK AND TRUST COMPANY

           By:   /s/ Daniel Golden
                 Authorized Signatory

           Name:  Daniel Golden
           Title:  Assistant Vice President


<PAGE>



           THE STOCKHOLDERS:


           By:   /s/ Stephen L. Parrish
                 Stephen L. Parrish
                 Stockholder Representative


<PAGE>



                                   SCHEDULE I

                                Pro Rata Interest


         Stockholder                                         Number of Shares

Adler, David B.
619 So. Bradford Street
N. Andover, MA 01845
(508) 688-8262

Arnold, Paul Clarke
4275 Grinnell Avenue
Boulder, CO 80303
(303) 499-5090

Bills, Brian M.
13488 Cascade Street
Broomfield, CO 80020
(303) 438-1098

Bills, Daniel G.
460 Lipan Way
Boulder, CO 80303
(303) 494-7086

Bills, June M.
460 Lipan Way
Boulder, CO 80303
(303) 494-7086

Black, Steven W.
507 South Clarkson Street
Denver, CO 80209
(303) 295-8519

Borenstein, Michael D.
7313 Panorama Drive
Boulder, CO 80303
(303) 494-2961

Bundy, Carolyn R.
16 Curtis Court
Broomfield, CO 80020
(303) 466-1260
<PAGE>

Bundy, Gordon L. & Carolyn R.
  as Joint Tenants & Not as Tenants in Common
16 Curtis Court
Broomfield, CO 80020

Dix, Scott R.
1230 N. State Parkway, Unit 24A
Chicago, IL 60610
(773) 244-3973

Donaldson, Edward E. & Virginia V.
  as Joint Tenants with Right of Survivorship
  not as Tenants in Common
S.E. 500 Water Street
Pullman, WA 99163
(509) 332-0814

Eifler, Norman R. & Elsie B.
  as Joint Tenants & Not as Tenants in Common
7666 Spring Drive
Boulder, CO 80302
(303) 499-4650

Harrison, Robert C.
39 East 79th Street
New York, NY 10021
(212) 535-3624

Harland, Tamara A.
1395 Norwood Avenue
Boulder, CO 80302
(303) 449-6392

Hauser, Daniel F.
1999 Joslyn Place
Boulder, CO 80302
(303) 443-8352

Howard, Jerry B.
6217 Corinth Road
Longmont, CO 80501
(303) 7776-6351

Kenigsberg, Kathryn L.
1721 Fairacres Drive
Greeley, CO 80631
(970) 392-0535
<PAGE>

McMillin, Anita Liane (Bills)
12448 Foxton Road
Foxton, CO 80441
(303) 816-0987

Mellecker, Richard L.
4620 Pacific Coast Highway
Torrance, CA 90505
(310) 316-7734

Menkick, George F.
11867 W. 85th Place
Arvada, CO 80005
(303) 431-1738

Miller, Donald R.
Trustee of the Adeline V. Miller
Family Testamentary Trust
24324 38th Avenue South
Kent, WA 98032
(206) 839-9072

Miller, Donald R.
Trustee of the Donald R. Miller
Revocable Living Trust, Dated: October 15, 1992
25324 38th Avenue South
Kent, WA 98032

O'Donoghue-Cooper, Eileen
1425 King Avenue
Boulder, CO 80302
(303) 443-7237

Graaff-Parrish Living Trust
6532 Primrose Lane
Longmont, CO 80503

Paukstis, Diane L. (Bills)
2225 Big Woods Drive
Batavia, IL 60510
(630) 761-1448

Pingree, J. Frederick, Jr.
2570 E. 1300 S.
Salt Lake City, UT 84108
(801) 582-0291
<PAGE>

Purvis, Sheila D.
6365 Loadicea Road
Longmont, CO 80503
(303) 651-7496 H
(303) 440-2800 W

Ringer, William A.
516 Mapleton
Boulder, CO 80304
(303) 444-1420

Ringer, Lynn D.
516 Mapleton
Boulder, CO 80304
(303) 444-1420

Skiles, Kristie K.
5247 Quail Hollow Court
Boulder, CO 80301
(303) 530-7307

Stewart, William D. III & Charlotte C.
  as Joint Tenants & Not as Tenants in Common
2994 75th Street
Boulder, CO 80301
(303) 665-1378

Warren, Keith A. & Betty B.
  as Joint Tenants with Right of Survivorship
  and Not as Tenants in Common
5357 Hickory Avenue
Boulder, CO 80303
(303) 494-6231

Willis, Robert M.
2544 Sherborne Drive
Belmont, CA 94002
(408) 727-7162

Gold I Trust
 Brian M. Bills and
 Anita Liane McMillin, Trustees
 Granville-Phillips Company
 5675 Arapahoe Avenue
 Boulder, CO 80303

<PAGE>

Gold II Trust
 Brian M. Bills and
 Anita Liane McMillin, Trustees
 Granville-Phillips Company
 5675 Arapahoe Avenue
 Boulder, CO 80303

Platinum I Trust
 Diane L. Paukstis and
 Anita Liane McMillin, Trustees
 Granville-Phillips Company
 5675 Araphahoe Avenue
 Boulder, CO 80303

Platinum II Trust
 Diane L. Paukstis and
 Anita Liane McMillin, Trustees
 Granville-Phillips Company
 5675 Araphahoe Avenue
 Boulder, CO 80303

Silver I Trust
 Brian M. Bills and
 Diane L. Paukstis, Trustees
 Granville-Phillips Company
 5675 Arapahoe Avenue
 Boulder, CO 80303

Silver II Trust
 Brian M. Bills and
 Diane L. Paukstis, Trustees
 Granville-Phillips Company
 5675 Arapahoe Avenue
 Boulder, CO 80303


<PAGE>


                                   SCHEDULE II

                              Fees of Escrow Agent


Acceptance Fee:                     Waived

Administrative fee:                 $2,500.00 per year or part thereof, plus
                                    $35.00 per stockholder

Out-of-Pocket Expense:              At cost

Legal Fees (Peabody & Arnold)       At cost






                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          HELIX TECHNOLOGY CORPORATION


         HELIX  TECHNOLOGY  CORPORATION,  a  corporation  organized and existing
under the laws of the State of Delaware, hereby certifies as follows:

         1. The name of the Corporation is HELIX TECHNOLOGY CORPORATION, and the
name  under  which  the   Corporation   was  originally   incorporated   is  500
INCORPORATED.

         The date of filing its original  Certificate of Incorporation  with the
Secretary of State was March 30, 1967.

         2.  This  Restated  Certificate  of  Incorporation  only  restates  and
integrates  and does not further  amend the  provisions  of the  Certificate  of
Incorporation of the Corporation as heretofore amended or supplemented and there
is no discrepancy  between those  provisions and the provisions of this Restated
Certificate of Incorporation.

         3.  The  text  of the  Certificate  of  Incorporation,  as  amended  or
supplemented,  is hereby restated without further  amendments or changes to read
as follows:
         FIRST.  The name of the Corporation is HELIX TECHNOLOGY CORPORATION.

         SECOND.  Its  registered  office in the State of Delaware is located at
No. 100 West Tenth Street, in the City of Wilmington,  County of New Castle. The
name and address of its registered agent is The Corporation  Trust Company,  No.
100 West Tenth Street, Wilmington, Delaware.

         THIRD.  The nature  of  the  business,  or  objects  or  purposes to be
transacted, promoted or carried on are:

         To engage in the  manufacture,  sale and  other  disposition of devices
for the production of refrigeration and/or the liquefication or solidifaction of
gases for the  purification of gases, for the production and maintenance of high
vacuums,  and for the production of extremely high  temperatures  for scientific
and  technical  purposes,  including  the growing of crystals.  To engage in the
manufacture and sale of scientific and technical equipment,  and the purchase or
manufacture  and  sale  of  accessory  materials,  equipment  and  supplies.  To
undertake,  the  installation  and  trial  operation  of  such  devices  and the
instruction  of others in the  operation  of such  devices and to perform  other
professional and technical services.

         To engage in engineering,  research and development for its own account
or for the  account  of others  in any field of  science  or  knowledge  pure or
applied.
<PAGE>

         To carry on a general manufacturing and merchandising  business and any
business incidental thereto or in any way connected  therewith,  including,  but
without limiting the generality of the foregoing purpose,  the trade or business
of preparing,  processing,  producing,  manufacturing,  adapting,  synthesizing,
forming, treating, finishing, converting,  experimenting, testing, and otherwise
acquiring,  owning,  holding,  consuming,  disposing  of and dealing in and with
interests in metals, minerals, and other materials,  substances or compounds, or
combinations  thereof,  organic and inorganic,  natural or  artificial,  and the
invention, design and fabrication of tools, apparatus and equipment employing or
useful for the  employing  of any such  materials,  and any and all other goods,
articles,  materials,  equipment,  compounds  or  substances  required  for,  or
convenient in connection  with or  incidental to any of the  foregoing;  and any
other trade or business which can conveniently be carried on in conjunction with
any of the  matters or  purposes  aforesaid  or in or upon the  premises  of the
corporation.

         To acquire,  hold, use, sell, assign,  lease, grant licenses in respect
of mortgage or otherwise  dispose of letters  patent of the United States or any
foreign country, patent rights, licenses and privileges,  formulas,  inventions,
improvements and processes,  trade secrets,  trademarks and trade names relating
to or useful in connection with any business of the corporation.

         In general,  to carry on any or all of the business of the  corporation
as principal, agent or contractor, and to carry on any other business incidental
to and in connection  with the foregoing and to have and exercise all the powers
conferred by laws of Delaware  upon  corporations  formed under the  Corporation
Laws of the State of Delaware.

         FOURTH.

         (a) The  total  number of shares  of stock  which  the  corporation  is
authorized  to issue is  7,000,000,  of which  5,000,000  shares shall be common
stock,  par  value of $1 per  share  ("Common  Stock")  and  2,000,000  shall be
preferred stock, par value $1 per share ("Preferred Stock").

         (b) Preferred  Stock may be issued,  from time to time, by the Board of
Directors as herein provided, in one or more series. The designations,  relative
rights,  preferences and limitations of the Preferred Stock, and particularly of
the shares of each series thereof, may be similar to or may differ from those of
any other series.  The Board of Directors of the corporation is hereby expressly
granted  authority,  subject to the provisions of this Article FOURTH, to divide
and issue,  from time to time, any or all of the Preferred  Stock in one or more
series  and to fix,  from time to time,  before  issuance  thereof,  by filing a
certificate  pursuant to the General  Corporation  Law of the State of Delaware,
the  number of shares in each such  series of such  class and all  designations,
relative rights (including the right to convert into shares of any class or into
shares of any series of any class), preferences and limitations of the shares in
each  such  series,  including  but  without  limiting  the  generality  of  the
foregoing, the following:


<PAGE>

                  (i)      The number of shares to constitute such series (which
                           number  may at any  time,  or from  time to time,  be
                           increased  or  decreased  by the Board of  Directors,
                           notwithstanding  that  shares  of the  series  may be
                           outstanding at the time of such increase or decrease,
                           unless the Board of  Directors  shall have  otherwise
                           provided in creating  such series,  but shall only be
                           decreased  to a  number  not  less  than  that of the
                           shares  of  such  series  then  outstanding)  and the
                           designation thereof;

                  (ii)     The  dividend  rate or  rates on the  shares  of such
                           series   and   any   restrictions,   limitations   or
                           conditions  upon the payment of such  dividends,  and
                           whether or not dividends on the shares of such series
                           shall be cumulative,  and the date or dates,  if any,
                           from which  dividends  thereon shall cumulate and the
                           dates  on  which  dividends,  if  declared,  shall be
                           payable;

                  (iii)    Whether  or not the  shares of such  series  shall be
                           redeemable,  and,  if  redeemable,  the date or dates
                           upon which or after  which they shall be  redeemable,
                           the amount or amounts  per share  payable  thereon in
                           the case of the redemption thereof,  which amount may
                           vary at  different  redemption  dates or otherwise as
                           permitted by law, and the other terms and  conditions
                           on which the shares may be redeemed;

                  (iv)     The  rights,  if any,  of holders  of such  series to
                           convert  the  same  into,  or  exchange  the same for
                           Common  Stock or other stock as permitted by law, and
                           the   price  or  prices  or  the  rate  or  rates  of
                           conversion  and the other  terms and  conditions,  if
                           any,  of  such  conversion  or  exchange,  as well as
                           provisions  for adjustment of the price or conversion
                           rate in such events as the Board of  Directors  shall
                           determine;

                  (v)      The  amount  per share  payable on the shares of such
                           series  in the  event  of  voluntary  or  involuntary
                           liquidation,   dissolution   or  winding  up  of  the
                           corporation;

                  (vi)     Whether the shares of such series shall be subject to
                           the  operation of a purchase,  retirement  or sinking
                           fund and, if so, the terms and conditions thereof;

                  (vii)    Whether the  holders of shares of such  series  shall
                           have voting  power,  full or limited,  in addition to
                           the  voting  powers  provided  by  law,  and in  case
                           additional  voting  powers are  accorded,  to fix the
                           extent thereof; and
<PAGE>

                  (viii)   Generally to fix the other rights and  privileges and
                           any  qualifications,  limitations or  restrictions of
                           such rights and privileges of such series,  provided,
                           however,    that   no   such   rights,    privileges,
                           qualifications,  limitations or restrictions shall be
                           in conflict with the Certificate of  Incorporation of
                           the corporation or with the resolution or resolutions
                           adopted  by the Board of  Directors,  as  hereinabove
                           provided,  providing  for the issue of any series for
                           which there are shares then outstanding.

         All shares of Preferred  Stock of the same series shall be identical in
all respects, except that shares of any one series issued at different times may
differ as to dates,  if any, from which dividends  thereon may  accumulate.  All
shares of  Preferred  Stock of all  series  shall be of equal  rank and shall be
identical in all  respects  except that to the extent not  otherwise  limited in
this Article  FOURTH any series may differ from any other series with respect to
any  one  or  more  of  the  designations,   relative  rights,  preferences  and
limitations (including,  without limitation, the designations,  relative rights,
preferences and  limitations  described or referred to in  subparagraphs  (i) to
(viii) inclusive above) which may be fixed by the Board of Directors pursuant to
this subparagraph (b).

         (c) The  Board of  Directors  adopted a  resolution  on June 5, 1978 as
follows:

         RESOLVED,  that there be and hereby is established and created a series
of preferred  stock of the  corporation  consisting of 200,000 shares having the
following  designation,   voting  powers,   relative  rights,   preferences  and
limitations:

1.  Designation.  Such series shall be designated "$.70  Cumulative  Convertible
Preferred Stock" (herein referred to as "$.70 Preferred  Stock").  The number of
shares of such series which may be issued shall be 200,000.

2.  Cumulative Dividend Rights; Restrictions on Parity Stock Payments and Junior
Stock Payments.

         2.1.  Cumulative  Dividend  Rights.  The holders of the $.70  Preferred
Stock  shall be  entitled  to  receive,  when and as  declared  by the  Board of
Directors,  out of funds  legally  available  for the purpose,  cumulative  cash
dividends at the rate of $.70 per share per annum,  payable quarterly on January
15,  April  15,  July 15 and  October  15 in each  year.  Dividends  on the $.70
Preferred  Stock  shall  be  cumulative  from the  dividend  payment  date  next
preceding the date on which the $.70 Preferred Stock is issued. Accumulations of
dividends shall not bear interest.

         2.2.  Restrictions  on Parity Stock Payments and Junior Stock Payments.
So long as any of the $.70 Preferred Stock is outstanding, the corporation shall
not at any time directly or indirectly  declare,  order,  pay, make or set apart
any sum or  property  for any  Parity  Stock  Payment or Junior  Stock  Payment,
unless, in each case,

                  (a) Full Cumulative  Dividends on the $.70 Preferred Stock for
         all past  Dividend  Periods and for the then  current  Dividend  Period
         shall have been declared and paid or a sum in cash  sufficient  for the
         payment thereof set apart for payment; and

<PAGE>

                  (b) the full  amount  of all  redemptions  then and  therefore
         required to be made in respect of the $.70 Preferred  Stock pursuant to
         sections 4.1 and 4.3 hereof shall have been made.

3.       Liquidation Rights.

         3.1.  Liquidations  Preferences.  In  the  event  of  any  liquidation,
dissolution or winding up of the corporation, before any payment or distribution
of the assets of the corporation  (whether  capital or surplus) shall be made to
or set apart for the  holders  of any  Junior  Stock,  the  holders  of the $.70
Preferred  Stock shall be entitled to the payment in cash of $10.00 per share if
such liquidation,  dissolution or winding up shall be involuntary, or $15.00 per
share if such  liquidation,  dissolution  or  winding  up  shall  be  voluntary,
together in each case with a sum equal to Full Cumulative  Dividends  thereon to
the date of final distribution to the holders of the $.70 Preferred Stock.

         3.2.  Distribution  on  Liquidation.  If,  upon  any  such  liquidation
dissolution or winding up, the assets of the corporation distributable among the
holders of the $.70 Preferred Stock shall be insufficient to pay to them in full
the  preferential  amounts  specified above,  then such assets,  or the proceeds
thereof,  shall be  distributed  among the holders of the $.70  Preferred  Stock
ratably  in   proportion  to  the  amounts  which  would  be  payable  to  them,
respectively, if such preferential amounts were paid to them in full.

4.       Required and Optional Redemptions.

         4.1.  Required  Redemptions.  On  June  1,  1989  and  on  each  June 1
thereafter  until all of the $.70 Preferred Stock shall have been redeemed,  the
corporation  shall  redeem  the  number of shares  of the $.70  Preferred  Stock
specified in the following table (subject, however, to the provisions of section
4.3  hereof),  upon the payment in cash of an amount  equal to $10.00 per share,
together  with a sum equal to Full  Cumulative  Dividends on the $.70  Preferred
Stock being redeemed to the date of redemption:

                                                              Number of Shares
Date of Redemption                                            to be Redeemed

 June 1, 1989                                                 45,000
 June 1, 1990                                                 40,000
 June 1, 1991                                                 40,000
 June 1, 1992                                                 40,000
 June 1, 1993                             All shares then remaining outstanding.


No redemption of less than all of the  outstanding  shares of the $.70 Preferred
Stock pursuant to section 4.2 hereof, and no redemption  pursuant to section 4.3
hereof of a larger  number of shares than that  specified  in this  section 4.1,
shall be credited to, or otherwise  relieve the corporation of its obligation to
make, the redemptions provided for in this section 4.1.
<PAGE>

         4.2.  Optional  Redemptions.  At any  time or from  time to time  after
November 30, 1981 the corporation may, at its option, upon notice as provided in
section 4.4 hereof, and subject to the provisions of section 4.3 hereof,  redeem
any (a  multiple  of 100  shares  and a minimum  of 1,000  shares) or all of the
shares of the $.70 Preferred Stock then outstanding, upon the payment in cash of
an  amount  equal  to  $10.00  per  share,  together  with a sum  equal  to Full
Cumulative  Dividends on the $.70 Preferred  Stock being redeemed to the date of
redemption,  provided  that the  corporation  shall not redeem any shares of the
$.70 Preferred Stock under this section 4.2 if the holder thereof shall elect to
convert the same in accordance  with section 5 hereof,  and  provided,  further,
that no redemption may be made under this section 4.2 unless

                  (a) the Market Price of the corporation's Common Stock on each
         trading  day  during  the  period of 45  consecutive  days  immediately
         preceding the date fixed for such  redemption  shall have been at least
         equal to 150% of the  Conversion  Price  (computed in  accordance  with
         section 5 hereof)  in  effect as of the close of  business  on the last
         full business day next preceding such date, and

                  (b) on the date fixed for such redemption the shares of Common
         Stock issuable upon conversion pursuant to section 5 hereof of the $.70
         Preferred Stock to be so redeemed shall have been registered  under the
         Securities Act, at the expense of the corporation,  pursuant to section
         10.5  of the  Purchase  Agreements  dated  May  31,  1978  between  the
         corporation and certain  institutional  investors  relating to the $.70
         Preferred  Stock (the  "Purchase  Agreements"),  and such  registration
         shall be effective,  to the extent  requisite to permit the disposition
         of such shares of Common Stock in accordance with the intended  methods
         of disposition thereof referred to in said section 10.5;

provided  that  the  requirements  of the  foregoing  clause  (b)  shall  not be
applicable if on the date fixed for such  redemption  such  disposition  of such
shares of Common Stock may be made by the holders of such $.70  Preferred  Stock
without  registration  pursuant  to  section  10.4(i)  or  section  10.10 of the
Purchase  Agreements.  As used in the foregoing clause (b), the term "Securities
Act"  shall  have  the  meaning  specified  in  section  10.2  of  the  Purchase
Agreements.

         4.3.  Additional  Redemptions.   Notwithstanding  any  other  provision
hereof,  if Section 302(b)(2) of the Internal Revenue Code as in effect on April
15,  1978 (or any  similar  provision  of the tax laws of the  United  States of
America in effect thereafter) shall not be applicable to any redemption required
by section 4.1 or to any  redemption  proposed to be made under section 4.2, the
corporation  shall,  at the time of such  redemption,  concurrently  redeem such
additional number of shares of the $.70 Preferred Stock as shall, in the opinion
of the firm of independent public accountants  referred to below, be required so
that said Section  302(b)(2) (or such similar  provision) shall be applicable to
such  redemption.  The  corporation  shall  furnish  to each  holder of the $.70
Preferred  Stock,  at least 30 days prior to the date  fixed for any  redemption
under  section 4.1 or section  4.2, a  certificate  of its  principal  financial
officer  certifying that said Section 302(b)(2) (or such similar provision) will
be  applicable  to  such  redemption  and  showing  in  reasonable   detail  all
computations  required  to  demonstrate  such  applicability,  together  with  a
certificate of a firm of independent public  accountants of recognized  national
standing selected by the corporation certifying to such applicability.
<PAGE>

         4.4.  Notice  of  Optional  Redemptions.  In the case of each  optional
redemption under section 4.2 hereof,  the corporation  shall give written notice
thereof  to each  holder of the $.70  Preferred  Stock not less than 30 nor more
than 60  days  prior  to the  date  fixed  for  such  redemption,  in each  case
specifying such date, the aggregate number of shares of the $.70 Preferred Stock
to be  redeemed  on such date and the number of shares of $.70  Preferred  Stock
held by such holder to be redeemed on such date.  Such notice  shall be given by
delivering or mailing the same to each such holder at the address of such holder
as it appears on the corporation's stock records.

         4.5.  Allocation  of  Partial  Redemptions.  If  less  than  all of the
outstanding  shares of the $.70 Preferred  Stock are to be redeemed  pursuant to
sections 4.1, 4.2 or 4.3 hereof,  the shares of the $.70  Preferred  Stock to be
redeemed shall be allocated in whole shares among all of the holders  ratably in
proportion,  as nearly as practicable,  to the respective numbers of shares held
by such holders, with adjustments,  to the extent practicable, to compensate for
any prior redemptions not allocated exactly in such proportion.

         4.6.  Effect of  Redemption.  Upon the date fixed for any redemption of
the $.70  Preferred  Stock,  and upon payment by the  corporation of the amounts
payable on redemption as provided herein, all shares of the $.70 Preferred Stock
redeemed shall be deemed to be no longer outstanding for any purpose, whether or
not  the   certificates   for  such  shares  shall  have  been  surrendered  for
cancellation,  and all rights with respect to such shares shall thereupon cease,
except  only the right of the  holders  of such  shares to receive  the  amounts
payable upon the  redemption  thereof.  All shares of the $.70  Preferred  Stock
redeemed  by the  corporation  shall be retired and  cancelled  and shall not be
reissued.

5.       Conversion.

         5.1. Conversion Privilege.  Any shares of the $.70 Preferred Stock may,
at the  election  of the  holder  thereof,  at any time  prior  to the  close of
business  on May 31, 1993 be  converted,  at the  conversion  price per share of
Common  Stock  of  $8.50,  as  adjusted  and  readjusted  from  time  to time in
accordance  with section 5.4 hereof (such  conversion  price, as so adjusted and
readjusted  and in effect at any  time,  being  herein  called  the  "Conversion
Price"), into the number of fully paid and non assessable shares of Common Stock
determined  by dividing  (a) the  aggregate  par value of the shares of the $.70
Preferred  Stock to be so  converted,  multiplied  by 10, by (b) the  Conversion
Price in effect at the time of such conversion.

         5.2. Manner of Conversion, etc. The certificate or certificates for any
shares of the $.70 Preferred  Stock to be converted  shall be surrendered at the
office or agency  maintained  for such  purpose  pursuant to section 5.9 hereof,
duly  endorsed,  or  accompanied  by  proper  instruments  of  transfer,  to the
corporation or in blank, and accompanied by written notice to the corporation of
the holder's  election to make such conversion and of the name or names in which
the certificate or certificates for shares of Common Stock are to be issued. The
right to convert any shares of the $.70  Preferred  Stock called for  redemption
shall  terminate  at the close of  business on the last full  business  day next
preceding the date fixed for such  redemption.  Upon conversion of any shares of
the $.70 Preferred Stock, the corporation  shall pay to the holder thereof a sum
equal to Full  Cumulative  Dividends  thereon  to the date of  conversion.  Each
conversion  shall be deemed to have been effected as of the close of business on
the  date  on  which  such  certificate  or  certificates  shall  have  been  so

<PAGE>

surrendered  to such  agency,  and at such time the rights of the holder of $.70
Preferred  Stock as such  shall,  to the extent of the number of shares  thereof
converted,  cease,  and the  person  or  persons  in  whose  name or  names  any
certificate  or  certificates  for shares of Common Stock shall be issuable upon
such  conversion  shall be deemed to have become the holder or holders of record
thereof.

         5.3. Delivery of Stock Certificates;  Fractional Shares. As promptly as
practicable  after the conversion of any $.70 Preferred  Stock, and in any event
within 20 days thereafter, the corporation at its expense (including the payment
by it of any  applicable  issue  taxes)  will issue and deliver to the holder of
such $.70 Preferred Stock, or as such holder (upon payment by such holder of any
applicable  transfer taxes) may direct,  a certificate or  certificates  for the
number of full shares of Common Stock  issuable upon such  conversion,  plus, in
lieu of any fractional  share to which such holder would  otherwise be entitled,
cash equal to such fraction  multiplied by the then current  Market Price of one
full  share,  determined  as  provided in clause  (viii) of  subdivision  (b) of
section 5.4 hereof.

         5.4. Adjustment of Conversion Price for Diluting Issues, Distributions.

                  (a) Adjustment for Sales Below Conversion  Price,  etc. If and
whenever after April 15, 1978 the corporation  shall issue or sell any shares of
its Common Stock for a consideration per share less than the Conversion Price in
effect  immediately  prior  to the  time of  such  issue  or  sale,  and/or  the
corporation  shall  issue or sell any  shares of its  Common  Stock  (except  on
conversion of $.70 Preferred Stock) for a consideration  per share less than the
Market Price on the date of such issue or sale, then,  forthwith upon such issue
or sale,  the  Conversion  Price  shall be  reduced  to the lower of the  prices
(calculated to the nearest cent) determined as follows:

                           (i) by dividing (A) an amount equal to the sum of (1)
                  the number of shares of Common Stock  outstanding  immediately
                  prior to such issue or sale  multiplied  by the then  existing
                  Conversion Price, and (2) the consideration,  if any, received
                  by the  corporation  upon such issue or sale, by (B) the total
                  number of shares of Common Stock outstanding immediately after
                  such issue or sale; and

                           (ii) by multiplying  the  Conversion  Price in effect
                  immediately  prior  to the  time  of such  issue  or sale by a
                  fraction,  the  numerator of which shall be the sum of (A) the
                  number of shares of Common Stock outstanding immediately prior
                  to  such  issue  or  sale   multiplied  by  the  Market  Price
                  immediately   prior  to  such  issue  or  sale  plus  (B)  the
                  consideration  received by the corporation  upon such issue or
                  sale, and the denominator of which shall be the product of (C)
                  the  total  number  of  shares  of  Common  Stock  outstanding
                  immediately  after such issue or sale,  multiplied  by (D) the
                  Market Price immediately prior to such issue or sale.

                  (b) For the purposes of subdivision  (a) above,  the following
clauses (i) to (x), inclusive, shall also be applicable:


<PAGE>

                           (i)  Issuance  of Rights or  Options.  In case at any
                  time the  corporation  shall  grant  (whether  directly  or by
                  assumption in a merger or  otherwise)  any rights to subscribe
                  for or to purchase, or any options for the purchase of, Common
                  Stock  or  any  stock  or  securities   convertible   into  or
                  exchangeable   for   Common   Stock   (such   convertible   or
                  exchangeable   stock  or   securities   being  herein   called
                  "Convertible  Securities")  whether  or  not  such  rights  or
                  options  or  the  right  to  convert  or  exchange   any  such
                  Convertible  Securities are immediately  exercisable,  and the
                  price per share for which  Common  Stock is issuable  upon the
                  exercise  of such  rights or  options  or upon  conversion  or
                  exchange  of  such  Convertible   Securities   (determined  by
                  dividing (A) the total amount,  if any, received or receivable
                  by the corporation as  consideration  for the granting of such
                  rights  or  options,  plus the  minimum  aggregate  amount  of
                  additional  consideration  payable to the corporation upon the
                  exercise of all such rights or options,  plus,  in the case of
                  such rights or options which relate to Convertible Securities,
                  the minimum aggregate amount of additional  consideration,  if
                  any,  payable  upon  the  issue  or sale  of such  Convertible
                  Securities and upon the conversion or exchange thereof, by (B)
                  the total  maximum  number of shares of Common Stock  issuable
                  upon  the  exercise  of such  rights  or  options  or upon the
                  conversion  or  exchange  of all such  Convertible  Securities
                  issuable upon the exercise of such rights or options) shall be
                  less than the Conversion Price in effect  immediately prior to
                  the time of the  granting  of such  rights or options (or less
                  than the Market  Price,  determined as of the date of granting
                  such  rights or options,  as the case may be),  then the total
                  maximum  number of shares of Common  Stock  issuable  upon the
                  exercise  of such  rights or  options  or upon  conversion  or
                  exchange  of the  total  maximum  amount  of such  Convertible
                  Securities  issuable  upon  the  exercise  of such  rights  or
                  options  shall (as of the date of  granting  of such rights or
                  options) be deemed to be  outstanding  and to have been issued
                  for such price per share.  Except as provided in clause  (iii)
                  below, no further adjustments of the Conversion Price shall be
                  made upon the  actual  issue of such  Common  Stock or of such
                  Convertible Securities upon exercise of such rights or options
                  or upon the actual issue of such Common Stock upon  conversion
                  or exchange of such Convertible Securities.

                           (ii) Issuance of Convertible Securities.  In case the
                  corporation  shall issue (whether directly or by assumption in
                  a merger or  otherwise)  or sell any  Convertible  Securities,
                  whether or not the rights to  exchange  or convert  thereunder
                  are immediately exercisable, and the price per share for which
                  Common  Stock is  issuable  upon such  conversion  or exchange
                  (determined  by  dividing  (A) the total  amount  received  or
                  receivable by the corporation as  consideration  for the issue
                  or sale of  such  Convertible  Securities,  plus  the  minimum
                  aggregate amount of additional consideration,  if any, payable
                  to the corporation upon the conversion or exchange thereof, by
                  (B) the  total  maximum  number  of  shares  of  Common  Stock
                  issuable   upon  the   conversion  or  exchange  of  all  such
                  Convertible  Securities)  shall be less  than  the  Conversion
                  Price in effect immediately prior to the time of such issue or

<PAGE>

                  sale (or less than the Market Price, determined as of the date
                  of such issue or sale of such Convertible  Securities,  as the
                  case may be),  then the  total  maximum  number  of  shares of
                  Common Stock issuable upon  conversion or exchange of all such
                  Convertible  Securities  shall (as of the date of the issue or
                  sale  of  such   Convertible   Securities)  be  deemed  to  be
                  outstanding  and to have been issued for such price per share,
                  provided that (1) except as provided in clause (iii) below, no
                  further adjustments of the Conversion Price shall be made upon
                  the  actual  issue of such  Common  Stock upon  conversion  or
                  exchange of such Convertible  Securities,  and (2) if any such
                  issue  or sale of such  Convertible  Securities  is made  upon
                  exercise of any rights to subscribe  for or to purchase or any
                  option to purchase any such  Convertible  Securities for which
                  adjustments  of the  Conversion  Price  have been or are to be
                  made pursuant to other  provisions of this subdivision (b), no
                  further  adjustment of the  Conversion  Price shall be made by
                  reason of such issue or date.

                           (iii) Change in Option Price or Conversion Rate. Upon
                  the happening of any of the following  events,  namely, if the
                  purchase price provided for in any rights or options  referred
                  to in  clause  (i) of this  subdivision  (b),  the  additional
                  consideration, if any, payable upon the conversion or exchange
                  of Convertible  Securities referred to in clause (i) or clause
                  (ii)  of this  subdivision  (b),  or the  rate  at  which  any
                  Convertible  Securities  referred  to in clause  (i) or clause
                  (ii)  of  this   subdivision  (b)  are  convertible   into  or
                  exchangeable  for Common Stock shall change  (other than under
                  or  by  reason  of  provisions  designed  to  protect  against
                  dilution),  the Conversion Price in effect at the time of such
                  event shall  forthwith be readjusted to the  Conversion  Price
                  which would have been in effect at such time had such  rights,
                  options or Convertible  Securities still outstanding  provided
                  for such changed purchase price,  additional  consideration or
                  conversion  rate,  as the case may be,  at the time  initially
                  granted,  issued or sold;  and on the  expiration  of any such
                  option  or  right  or the  termination  of any  such  right to
                  convert  or  exchange   such   Convertible   Securities,   the
                  Conversion  Price then in effect  hereunder shall forthwith be
                  increased  to the  Conversion  Price  which would have been in
                  effect at the time of such  expiration or termination had such
                  right,   option  or  Convertible   Security,   to  the  extent
                  outstanding   immediately   prior   to  such   expiration   or
                  termination,  never been issued, and the Common Stock issuable
                  thereunder shall no longer be deemed to be outstanding. If the
                  purchase  price  provided  for in any  such  right  or  option
                  referred to in clause (i) of this  subdivision (b) or the rate
                  at which any Convertible  Securities referred to in clause (i)
                  or clause (ii) of this subdivision (b) are convertible into or
                  exchangeable  for Common  Stock,  shall  decrease  at any time
                  under or by reason of provisions with respect thereto designed
                  to protect against  dilution,  then in case of the delivery of
                  Common  Stock upon the exercise of any such right or option or
                  upon conversion or exchange of any such Convertible  Security,
                  the Conversion  Price then in effect hereunder shall forthwith
                  be adjusted to such  respective  amount as would have obtained

<PAGE>

                  had such  right,  option or  Convertible  Security  never been
                  issued as to such Common Stock and had  adjustments  been made
                  upon the issuance of the shares of Common  Stock  delivered as
                  aforesaid,  but only if as a  result  of such  adjustment  the
                  Conversion   Price  then  in  effect   hereunder   is  thereby
                  decreased.

                           (iv) Stock Dividends.  In case the corporation  shall
                  declare a dividend  or snake any other  distribution  upon any
                  stock  of  the   corporation   payable  in  Common   Stock  or
                  Convertible  Securities,   any  Common  Stock  or  Convertible
                  Securities,  as the case may be,  issuable  in payment of such
                  dividend or  distribution  shall be deemed to have been issued
                  or sold without consideration.

                           (v)  Consideration  for Stock.  In case any shares of
                  Common  Stock  or  Convertible  Securities  or any  rights  or
                  options  to  purchase  any such  Common  Stock or  Convertible
                  Securities shall be issued or sold for cash the  consideration
                  received therefor shall be deemed to be the amount received by
                  the corporation  therefor,  without deduction therefrom of any
                  expenses   incurred  or  any   underwriting   commissions   or
                  concessions  paid or allowed by the  corporation in connection
                  therewith.  In case any shares of Common Stock or  Convertible
                  Securities  or any  rights or  options  to  purchase  any such
                  Common Stock or Convertible Securities shall be issued or sold
                  for a  consideration  other  than  cash,  the  amount  of  the
                  consideration  other  than cash  received  by the  corporation
                  shall be deemed to be the fair value of such  consideration as
                  determined  in good  faith by the  Board of  Directors  of the
                  Corporation, without deduction of any expenses incurred or any
                  underwriting commissions or concessions paid or allowed by the
                  corporation  in  connection  therewith.  In case any shares of
                  Common  Stock  or  Convertible  Securities  or any  rights  or
                  options  to  purchase   such  Common   Stock  or   Convertible
                  Securities  shall be issued in  connection  with any merger or
                  consolidation  in  which  the  corporation  is  the  surviving
                  corporation,  the amount of  consideration  therefor  shall be
                  deemed  to be the fair  value as  determined  by the  Board of
                  Directors of the corporation of such portion of the assets and
                  business of the  non-surviving  corporation or corporations as
                  such Board shall  determine to be  attributable to such Common
                  Stock, Convertible Securities,  rights or options, as the case
                  may be.  In the  event of any  consolidation  or merger of the
                  corporation  in which  the  corporation  is not the  surviving
                  corporation   or  in  the   event   of  any  sale  of  all  or
                  substantially  all of the assets of the  corporation for stock
                  or other securities of any corporation,  the corporation shall
                  be  deemed to have  issued a number  of  shares of its  Common
                  Stock  for  stock  or  securities  of  the  other  corporation
                  computed  on the basis of the actual  exchange  ratio on which
                  the transaction  was predicated and for a consideration  equal
                  to the fair market  value on the date of such  transaction  of
                  such stock or securities of the other corporation.
<PAGE>

                           (vi) Record Date. In case the corporation  shall take
                  a record of the holders of its Common Stock for the purpose of
                  entitling them (A) to receive a dividend or other distribution
                  payable in Common Stock or in Convertible  Securities,  or (B)
                  to  subscribe  for or  purchase  Common  Stock or  Convertible
                  Securities,  then such  record  date shall be deemed to be the
                  date of the issue or sale of the shares of Common Stock deemed
                  to have been issued upon the  declaration  of such dividend or
                  the  making  of such  other  distribution  or the  date of the
                  granting of such right of  subscription  or  purchase,  as the
                  case may be.

                           (vii) Treasury Shares. The number of shares of Common
                  Stock  outstanding  at any given time shall not include shares
                  owned or held by or for the  account of the  corporation,  and
                  the  disposition  of any such shares  shall be  considered  an
                  issue  or sale  of  Common  Stock  for  the  purposes  of this
                  subdivision (b).

                           (viii)  Definition  of Market Price.  "Market  Price"
                  shall mean in the case of any  trading  day the average of the
                  closing  prices of the Common Stock sales on all  exchanges on
                  which the Common Stock may at the time be listed, or, if there
                  shall have been no sales on any such exchange on any such day,
                  the  average  of the bid and  asked  prices at the end of such
                  day,  or, if the  Common  Stock  shall not be so  listed,  the
                  average of the bid and asked  prices at the end of such day in
                  the over-the-counter market, in each such case (except for the
                  purposes of section 4.2 hereof)  averaged  over a period of 20
                  consecutive business days prior to the day as of which "market
                  price" is being determined. If at any time the Common Stock is
                  not listed on any  exchange or quoted in the  over-the-counter
                  market, the "Market Price" shall be deemed to be the higher of
                  (A) the  book  value  thereof  as  determined  by any  firm of
                  independent public accountants of recognized national standing
                  selected by the Board of  Directors of the  corporation  as at
                  the last day of any month ending within 60 days  preceding the
                  date as of which  the  determination  is to be made or (B) the
                  fair value  thereof  determined  in good faith by the Board of
                  Directors of the  corporation  as of a date which is within 15
                  days of the date as of which the determination is to be made.

                           (ix)  Determination  of Market  Price  under  Certain
                  Circumstances.     Anything    herein    to    the    contrary
                  notwithstanding,  in case  the  corporation  shall  issue  any
                  shares of Common Stock or Convertible Securities in connection
                  with the acquisition by the corporation of the stock or assets
                  of  any  other   corporation   or  the  merger  of  any  other
                  corporation into the corporation under  circumstances where on
                  the date of the  issuance  of such  shares of Common  Stock or
                  Convertible  Securities  the  consideration  received for such
                  Common  Stock or deemed to have been  received  for the Common
                  Stock into which such  Convertible  Securities are convertible
                  is less than the Market Price of the Common Stock,  but on the
                  date the  number  of shares  of  Common  Stock or  Convertible
                  Securities  (or in the case of  Convertible  Securities  other

<PAGE>

                  than stock,  the  aggregate  principal  amount of  Convertible
                  Securities) was determined the consideration received for such
                  Common  Stock or deemed to have been  received  for the Common
                  Stock into which such  Convertible  Securities are convertible
                  would not have been less than the Market Price  thereof,  such
                  shares of Common Stock shall not be deemed to have been issued
                  for less than the Market Price of the Common Stock.

                           (x) Determination of Consideration in Connection with
                  Certain   Acquisitions.   Anything   in  clause  (v)  of  this
                  subdivision (b) to the contrary  notwithstanding,  in the case
                  of an  acquisition  where all or part of the purchase price is
                  payable  in  Common  Stock or  Convertible  Securities  but is
                  stated as a dollar amount,  where the corporation  upon making
                  the  acquisition  pays only part of a maximum dollar  purchase
                  price  which  is  payable  in  Common  Stock  or   Convertible
                  Securities  and where the  balance of such  purchase  price is
                  deferred or is contingently payable under a formula related to
                  earnings over a period of time, (A) the consideration received
                  for any Common Stock or  Convertible  Securities  delivered at
                  the time of the acquisition shall be deemed to be such part of
                  the total  consideration as the portion of the dollar purchase
                  price  then paid in  Common  Stock or  Convertible  Securities
                  bears to the total maximum  dollar  purchase  price payable in
                  Common Stock or Convertible Securities,  and (B) in connection
                  with each issuance of additional  Common Stock or  Convertible
                  Securities  pursuant to the terms of the agreement relating to
                  such acquisition,  the consideration  received shall be deemed
                  to be such part of the total  consideration  as the portion of
                  the dollar purchase price then and theretofore  paid in Common
                  Stock or  Convertible  Securities  bears to the total  maximum
                  dollar  purchase  price payable in Common Stock or Convertible
                  Securities  multiplied  by a fraction,  the numerator of which
                  shall be the number of shares  (or in the case of  Convertible
                  Securities other than stock, the aggregate  principal  amount)
                  then  issued and the  denominator  of which shall be the total
                  number of  shares  (or in the case of  Convertible  Securities
                  other than stock,  the  aggregate  principal  amount) then and
                  theretofore issued under such acquisition agreement.  If it is
                  determined that any part of the deferred or contingent portion
                  of such purchase  price shall not be payable,  the  Conversion
                  Price then in effect  hereunder  shall forthwith be readjusted
                  to such  Conversion  Price as would have  obtained (l) had the
                  adjustment made in connection with such  acquisition been made
                  upon the basis of the issuance of only the number of shares of
                  Common  Stock or  Convertible  Securities  actually  issued in
                  connection with such acquisition, and (2) had adjustments been
                  made on the  basis  of the  Conversion  Price as  adjusted  in
                  clause (1) for all issues or sales (as prices which would have
                  affected  such adjusted  Conversion  Price) of Common Stock or
                  rights,  options  or  Convertible  Securities  made after such
                  acquisition.  In the event  that  only a part of the  purchase
                  price  for  an   acquisition   is  paid  in  Common  Stock  or
                  Convertible  Securities  in the  manner  referred  to in  this
                  clause  (x),  the term "total  consideration"  as used in this

<PAGE>

                  clause (x) shall mean that part of the aggregate consideration
                  as is fairly  allocable to the  purchase  price paid in Common
                  Stock or Convertible  Securities in the manner  referred to in
                  this clause (x), as  determined  by the Board of  Directors of
                  the corporation.

                  (c)  Adjustment  for Certain  Special  Dividends.  In case the
corporation  shall declare a dividend  upon the Common Stock  payable  otherwise
than out of consolidated earnings or consolidated earned surplus,  determined in
accordance with generally accepted accounting  principles,  including the making
of appropriate deductions for minority interests,  if any, in Subsidiaries,  and
otherwise than in Common Stock or Convertible  Securities,  the Conversion Price
in effect immediately prior to the declaration of such dividend shall be reduced
by an amount  equal,  in the case of a dividend in cash,  to the amount  thereof
payable per share of the Common Stock or, in the case of any other dividend,  to
the fair value  thereof per share of the Common Stock as determined by the Board
of Directors of the  corporation.  For the purposes of the  foregoing a dividend
other than in cash shall be considered payable out of earnings or surplus (other
than  revaluation  or paid-in  surplus) only to the extent that such earnings or
surplus  are  charged  an amount  equal to the fair  value of such  dividend  as
determined by the Board of Directors of the  corporation.  Such reductions shall
take  effect as of the date on which a record is taken for the  purpose  of such
dividend,  or, if a record is not  taken  the date as of which  the  holders  of
Common Stock of record entitled to such dividend are to be determined.

                  (d)   Subdivision  or  Combination  of  Stock.   In  case  the
corporation  shall at any time subdivide its outstanding  shares of Common Stock
into a greater  number of shares,  the  Conversion  Price in effect  immediately
prior to such subdivision shall be proportionately  reduced, and conversely,  in
case the outstanding shares of Common Stock of the corporation shall be combined
into a smaller  number of shares,  the  Conversion  Price in effect  immediately
prior to such Combination shall be proportionately increased.

                  (e) Reorganization, Reclassification, Consolidation, Merger or
Sale. If any capital  reorganization or reclassification of the capital stock of
the  corporation,  or  consolidation  or merger of the corporation  with another
corporation,  or the sale of all or  substantially  all of its assets to another
corporation  shall be effected in such a way that  holders of Common Stock shall
be  entitled  to  receive  stock,  securities  or assets  with  respect to or in
exchange  for  Common  Stock,  then,  as a  condition  of  such  reorganization,
reclassification,  consolidation,  merger or sale, lawful and adequate provision
shall be made whereby each holder of $.70 Preferred Stock shall  thereafter have
the  right to  purchase  and  receive  upon the  basis  and upon the  terms  and
conditions specified herein and in lieu of the shares of the Common Stock of the
corporation  immediately  theretofore  issuable upon the conversion of such $.70
Preferred Stock, such shares of stock, securities, or assets as may be issued or
payable  with respect to or in exchange  for a number of  outstanding  shares of
such  Common  Stock  equal to the  number of shares  of such  stock  immediately
theretofore  issuable upon the conversion of such $.70 Preferred  Stock had such
reorganization, reclassification, consolidation, merger or sale not taken place,
and in any such case  appropriate  provision  shall be made with  respect to the
rights and interests of the holders of the $.70 Preferred  Stock to the end that
the provisions hereof (including without  limitation  provisions for adjustments
of the Conversion Price) shall thereafter be applicable, as nearly as may be, in
relation to any shares of stock,  securities,  or assets thereafter  deliverable
upon the  conversion of the $.70  Preferred  Stock.  The  corporation  shall not

<PAGE>

effect any such  consolidation,  merger or sale,  unless  prior to  consummation
thereof the successor corporation (if other than the corporation) resulting from
such  consolidation or merger,  or the corporation into or for the securities of
which the  outstanding  shares of Common  Stock shall be changed or exchanged in
connection with such consolidation or merger or the corporation  purchasing such
assets shall assume by written instrument  executed and mailed to each holder of
$.70 Preferred Stock at the time outstanding,  the obligation to deliver to such
holder such shares of stock,  securities  or assets as, in  accordance  with the
foregoing provisions,  such holder may be entitled to. If a purchase,  tender or
exchange  offer is made to and  accepted  by the holders of more than 50% of the
outstanding shares of Common Stock of the corporation, the corporation shall not
effect  any  consolidation,  a merger or sale with the person  having  made such
offer,  unless  prior  to the  consummation  thereof  the  holders  of the  $.70
Preferred Stock shall have been given a reasonable  opportunity to then elect to
receive  upon the  conversion  of the $.70  Preferred  Stock  either  the stock,
securities  or assets  then  issuable  with  respect to the Common  Stock of the
corporation or the stock,  securities or assets,  or the  equivalent,  issued to
previous holders of the Common Stock in accordance with such offer.

                  (f)  Notice  of   Adjustment.   Upon  any  adjustment  of  the
Conversion  Price, then and in each such case the corporation shall give written
notice thereof to each holder of $.70 Preferred  Stock at the time  outstanding,
which notice shall state the Conversion  Price  resulting from such  adjustment,
and shall set forth in reasonable  detail the method of calculation  thereof and
the facts upon which such  calculation  is based.  Such notice shall be given by
delivering or mailing the same to each such holder at the address of such holder
as it appears on the corporation's stock records.

                  (g)      Other Notices.  In case at any time:

                           (i) the  corporation  shall declare any such dividend
                  on its  Common  Stock at a rate in  excess  of the rate of the
                  last cash dividend theretofore paid;

                           (ii) the corporation  shall pay any dividend  payable
                  in stock upon its Common Stock or make any distribution (other
                  than  regular  cash  dividends)  to the  holders of its Common
                  Stock;

                           (iii) the  corporation  shall offer for  subscription
                  pro rata to the  holders  of its Common  Stock any  additional
                  shares of stock of any class or other rights;

                           (iv) there  shall be any capital  reorganization,  or
                  reclassification  of the capital stock of the corporation,  or
                  consolidation  or merger of the  corporation  with, or sale of
                  all  or   substantially   all  of  its  assets   to,   another
                  corporation; or

                           (v) there  shall  be  a   voluntary   or  involuntary
                  dissolution,  liquidation or winding up of the corporation;
<PAGE>

then,  in any one or more of said  cases,  the  corporation  shall give  written
notice to each holder of $.70 Preferred  Stock at the time  outstanding,  of the
date on which (A) the books of the corporation  shall close or a record shall be
taken  for such  dividend,  distribution  or  subscription  rights,  or (B) such
reorganization,  reclassification,  consolidation,  merger,  sale,  dissolution,
liquidation  or winding up shall take  place,  as the case may be.  Such  notice
shall also  specify the date as of which the  holders of Common  Stock of record
shall  participate in such dividend,  distribution  or subscription  rights,  or
shall be  entitled  to  exchange  their  Common  Stock for  securities  or other
property deliverable upon such reorganization, reclassification,  consolidation,
merger, sale,  dissolution,  liquidation or winding up, as the case may be. Such
notice shall be given by  delivering  or mailing the same to each such holder at
the address of such holder as it appears on the corporation's  stock records, at
least 20 days prior to the action in question and not less than 20 days prior to
the record date or the date on which the corporation's transfer books are closed
in respect thereto.

                  (h)  Certain  Events.  If any event  occurs as to which in the
opinion of the Board of Directors of the  corporation  the other  provisions  of
this section 5.4 are not strictly applicable or if strictly applicable would not
fairly protect the conversion  rights of the holders of the $.70 Preferred Stock
in accordance with the essential intent and principles of such provisions,  then
the Board of  Directors  shall make an  adjustment  in the  application  of such
provisions,  in accordance with such essential  intent and principles,  so as to
protect such conversion rights as aforesaid.

         5.5.  Shares to be Fully Paid;  Reservation of Shares.  The corporation
covenants and agrees that all shares which may be issued upon  conversion of the
$.70 Preferred Stock will, upon issuance,  be fully paid and  non-assessable and
free from all taxes,  liens and charges with respect to the issue  thereof;  and
without limiting the generality of the foregoing,  the corporation covenants and
agrees that it will from time to time take all such  action as may be  requisite
to assure that the par value per share of the Common Stock is at all times equal
to or less than the then effective  purchase price per share of the Common Stock
issuable upon conversion of the $.70 Preferred  Stock.  The corporation  further
covenants and agrees that the corporation will at all times have authorized, and
reserved for the purpose of issue or transfer  upon the  conversion  of the $.70
Preferred  Stock,  a sufficient  number of shares of its Common Stock to provide
for the conversion of the $.70 Preferred Stock.

         5.6. Registration,  Approval and Listing. If any shares of Common Stock
required to be reserved  for  purposes of  conversion  of $.70  Preferred  Stock
hereunder require  registration  with or approval of any governmental  authority
under any Federal or State law, or listing on any national securities  exchange,
before such shares may be issued upon conversion,  the corporation  will, at its
expense, as expeditiously as possible, use its best efforts to cause such shares
to be duly registered or approved or listed on the relevant national  securities
exchange, as the case may be.

         5.7. Issue Tax. The issuance of certificates for shares of Common Stock
upon the conversion of $.70 Preferred  Stock shall be made without charge to the
holders of such $.70  Preferred  Stock for any issuance tax in respect  thereof,
provided that the corporation  shall not be required to pay any tax which may be
payable in respect of any transfer  involved in the issuance and delivery of any
certificate  in a name  other  than  the  holder  of the  $.70  Preferred  Stock
converted.
<PAGE>

         5.8.  Closing  of  Books.  The  corporation  will at no time  close its
transfer  books  against the  transfer of any shares of Common  Stock  issued or
issuable  upon the  conversion of the $.70  Preferred  Stock in any manner which
interferes with the timely  exercise of the conversion  rights of the holders of
the $.70 Preferred Stock.

         5.9.  Conversion  Agent.  So  long  as  any  $.70  Preferred  Stock  is
outstanding,  the corporation  will at all times maintain an office or agency in
Boston,  Massachusetts,  for the  purpose  of  accepting  $.70  Preferred  Stock
surrendered  for  conversion and issuing Common Stock upon the conversion of the
$.70  Preferred  Stock  pursuant to section 5.2 hereof.  Initially the office or
agency  hereunder for such purposes  shall be the principal  office of The First
National Bank of Boston. The corporation will give written notice to each holder
of the $.70 Preferred Stock at the time outstanding of any change in such office
or agency.

6.       Voting Rights; Restrictions on Corporate Action.

         6.1. General Voting Rights.  Except as otherwise provided by law and in
addition to the rights  provided for in section 6.2 and section 6.3 hereof,  the
holders of the $.70 Preferred Stock shall be entitled to one-tenth (1/10) of one
vote for each share held and shall be entitled to  exercise  such voting  rights
voting with the holders of Common Stock,  without distinction as to class at any
annual or special meeting of  stockholders  for the election of directors and on
any other matter coming before such meeting.

         6.2.  Special  Right  to Elect  Director.  (a) If and  whenever  (i) if
dividends on the $.70 Preferred Stock shall have been in arrears for a period of
12 calendar months (whether or not  consecutive),  or (ii) the corporation shall
have  failed to make any  redemption  of the $.70  Preferred  Stock  required by
section 4.1 hereof when due, and such failure or failures  shall have  continued
for a period of 12 calendar months (whether or not consecutive),  the holders of
the  outstanding  $.70  Preferred  Stock  shall have the special  right,  voting
separately as a single class,  to elect one director of the  corporation  at the
next  succeeding  annual meeting of stockholders  and at each succeeding  annual
meeting  of  stockholders   thereafter  until  such  right  shall  terminate  as
hereinafter  provided.  At each meeting of  stockholders at which the holders of
the $.70 Preferred Stock shall have such special right,  voting  separately as a
single  class,  to elect a director,  the  presence in person or by proxy of the
holders  of  record  of  one-third  of the  total  number  of shares of the $.70
Preferred  Stock at the time  outstanding  shall be necessary and  sufficient to
constitute a quorum of such class for such  election by such  stockholders  as a
class.
<PAGE>

                  (b) Each director elected by the holders of the $.70 Preferred
Stock voting separately as a single class as provided in subdivision (a) of this
section  6.2 shall hold office  until the annual  meeting of  stockholders  next
succeeding  his  election  and until his  successor,  if any, is elected by such
holders and qualified or until his death,  resignation  or removal in the manner
provided in the by-laws of the  corporation.  In case the office of any director
shall become vacant, such vacancy may be filled for the unexpired portion of the
term  by the  vote of such  stockholders  given  at a  special  meeting  of such
stockholders called for the purpose.

                  (c) Whenever Full  Cumulative  Dividends on the $.70 Preferred
Stock for all past  Dividend  Periods and for the then current  Dividend  Period
shall have been declared and paid,  and all  redemptions  of the $.70  Preferred
Stock  required  by section  4.1 hereof  shall have been made,  the right of the
holders of the $.70 Preferred  Stock,  voting  separately as a single class,  to
elect a director  as  provided  in  subdivision  (a) of this  section  6.2 shall
terminate at the next  succeeding  annual meeting of  stockholders,  but subject
always to the same  provisions  for the vesting of such  special  right,  voting
separately as a single class, to elect a director in the case of any future such
arrearage or failure.

         6.3.  Restrictions  on  Corporate  Action.  Without  the consent of the
holders of at least a majority of the shares of the $.70 Preferred  Stock at the
time  outstanding,  given in  writing  without a meeting or by vote at a meeting
called for the purpose,  at which the holders of the $.70 Preferred  Stock shall
vote separately as a single class, the corporation shall not

                  (a)  Authorize  or issue any  shares  of  Senior  Stock or any
shares of stock or any  obligations  or warrants or rights  convertible  into or
evidencing rights to purchase any Senior Stock;

                  (b)  Authorize  or issue any  shares  of  Parity  Stock or any
shares of stock or any  obligations  or warrants or rights  convertible  into or
evidencing rights to purchase any Parity Stock unless,  immediately after giving
effect  thereto and to any  concurrent  transactions,  Consolidated  Net Income.
Available  for  Dividends  for the  period of the four most  recently  completed
quarterly  accounting  periods of the  corporation  shall have equalled at least
150% of Pro Forma Interest and Preferred Dividends;

                  (c) Declare, order, pay, make or set apart any sum or property
for any Junior Stock  Payment  (except to the extent of the  aggregate  net cash
proceeds received by the corporation after the date of initial issue of the $.70
Preferred  Stock from the sale of shares of Junior Stock or of warrants,  rights
or options to acquire any such shares) unless,  immediately  after giving effect
thereto, Consolidated Net Worth shall be at least $8,000,000;

                  (d)  Take  any  action   looking   towards   its  liquidation,
dissolution or winding up;

                  (e)  Consolidate  with or merge into any other person,  unless
(i) the holders of the $.70 Preferred  Stock will receive in such  consolidation
or merger the same number of shares of stock of the  corporation  resulting from
or surviving such  consolidation or merger,  having the same relative rights and
preferences  as the $.70 Preferred  Stock,  and (ii) after giving effect to such
consolidation  or merger,  the  corporation  resulting  from or  surviving  such
consolidation or merger will have no stock authorized or outstanding  having any

<PAGE>

right or  preference as to dividends or assets senior to any right or preference
of the $.70  Preferred  Stock or of the stock  issued to the holders of the $.70
Preferred Stock in such consolidation or merger;

                  (f)  Sell,  lease,  abandon  or  otherwise  dispose  of all or
substantially all of its properties and assets, except that the corporation may,
without such consent,  sell or otherwise  dispose of all or substantially all of
its  properties  and assets to another  corporation if as a result of such trans
action (i) the holders of the $.70 Preferred  Stock will  thereupon  receive the
same  number of  shares  of stock of the  corporation  purchasing  or  otherwise
acquiring  such  properties  and  assets,  having the same  relative  rights and
preferences  as the $.70 Preferred  Stock,  and (ii) after giving effect to such
transaction,  the corporation  purchasing or otherwise acquiring such properties
and assets  will have no stock  authorized  or  outstanding  having any right or
preference  as to dividends or assets  senior to any right or  preference of the
$.70 Preferred Stock or of the stock issued to the holders of the $.70 Preferred
Stock in such transaction;

                  (g) Enter into any agreement or understanding which in any way
restricts the corporation's right or ability to declare and pay dividends on, or
to make any other distribution with respect to, or to redeem, the $.70 Preferred
Stock; or

                  (h)  Authorize or effect any amendment to its  Certificate  of
Incorporation  or by-laws which would adversely  affect or be inconsistent  with
any of the  rights  or  preferences  of the $.70  Preferred  Stock or  otherwise
prejudicial to the interests of the holders of the $.70 Preferred Stock.

7.  Change in Tax Laws.  In the event that the tax laws of the United  States of
America are  amended  after  April 15,  1978 so as to allow the  corporation  to
elect, for Federal income tax purposes,  whether or not to claim a deduction for
dividends or other  distributions  on or on account of the $.70 Preferred Stock,
the corporation  shall not, without the unanimous  consent of the holders of the
shares of the $.70  Preferred  Stock at the time  outstanding,  given in writing
without a meeting or by vote at a Meeting  called for the purpose,  at which the
holders of the $.70  Preferred  Stock snail vote  separately  as a single class,
elect to claim  any such  deduction  if as a  result  of such  election  (a) the
deduction  for  dividends  received  provided for in Section 243 of the Internal
Revenue  Code as in effect on April 15, 1978 with  respect to  dividends  on the
$.70  Preferred  Stock  received by any holder  thereof  would be  eliminated or
reduced,  or (b) the interests of the holders of the $.70 Preferred  Stock would
otherwise be adversely affected.

8.       Definitions; Accounting Terms and Principles.

         8.1.     Definitions   of   Capitalized   Terms.  As  used  herein  the
following  terms  have the  following respective meanings:

         Common Stock:  the Common Stock,  $1 par value,  of the  corporation as
constituted  on the date of initial issue of the $.70 Preferred  Stock,  and any
stock  into which  such  Common  Stock  shall  have been  changed,  or any stock
resulting from any subdivision,  Combination,  consolidation or reclassification
of such Common Stock.

         Consolidated   Net  Income,   Consolidated  Net  Income  Available  for
Dividends and Consolidated  Net Worth: the Net Income,  Net Income Available for
dividends  and Net  Worth,  as the  case  may  be,  of the  corporation  and its
Subsidiaries (whether or not ordinarily  consolidated in consolidated  financial

<PAGE>

statements of the corporation and Subsidiaries),  all consolidated in accordance
with generally  accepted  accounting  principles,  and after giving  appropriate
effect to outside minority interests, if any, in Subsidiaries,  provided that in
determining  Consolidated  Net Income there shall be excluded (a) the Net Income
of  any  person  other  than a  Subsidiary)  in  which  the  corporation  or any
Subsidiary  has an  ownership  interest,  except to the extent that any such Net
Income has been actually  received by the  corporation or such Subsidiary in the
form of dividends or similar distributions,  (b) any undistributed Net Income of
a  Subsidiary  which  for any  reason is  unavailable  for  distribution  to the
corporation  or any  other  Subsidiary,  and (c) any  deferred  or other  credit
representing  amortization  of the excess of the equity in any Subsidiary at the
date of acquisition thereof over the cost of the investment in such Subsidiary.

         Conversion Price:  as defined in section 5.1 thereof.

         Convertible Securities:  as  defined  in  clause (i) of subdivision (b)
of section 5.4 hereof.

         Dividend  Periods:  the periods beginning on January 16, April 16, July
l6 and  October 16 and ending on April 15,  July 15,  October 15 and January 15,
respectively, in each year.

         Full Cumulative  Dividends:  cumulative dividends on the $.70 Preferred
Stock  computed,  to the date or for the Dividend Period with reference to which
the term is used,  at the rate of $.70 per share per annum  (whether or not such
amount or any part thereof shall have been declared as dividends, whether or not
there exists or shall have  existed  available  funds out of which  dividends in
such amount might be or might  therefore  have been  declared and whether or not
declarations  or payment of dividends in such amount shall be or shall have been
in contravention of any applicable  restrictions from time to time in effect for
the benefit of holders of any class of  indebtedness of the  corporation),  less
the  aggregate  of  dividends  paid  thereon  to such date or for such  Dividend
Period, as the case may be.

         Junior Stock:  the Common Stock and any other stock of the  corporation
having rights and  preferences as to dividends and assets junior in all respects
to the rights and preferences of the $.70 Preferred Stock.

         Junior Stock  Payment:  any dividend or other  distribution,  direct or
indirect,  on or on account of any shares of any Junior Stock then or thereafter
outstanding, except a dividend payable solely in shares of Junior Stock, and any
redemption,  retirement,  purchase or other acquisition,  direct or indirect, of
any shares of any Junior Stock then or thereafter outstanding or of any warrants
or  rights  to  purchase  any  such  Stock,   except  to  the  extent  that  the
consideration  for any such  redemption,  retirement,  purchase  or  acquisition
consists of shares of Junior Stock.

         Market Price:  as  defined  in  clause  (viii)  of  subdivision  (b) of
section 5.4 hereof.

         Net Income  of  any   corporation   for any period:  the net income (or
net deficit) of such  corporation  for such period,  determined in the following
manner:
<PAGE>

                  (a) the gross revenues and other proper income credits of such
         corporation  shall be  computed  for such  period  in  accordance  with
         generally  accepted  accounting  principles,  excluding,  however,  the
         following items (without duplication):

                           (i)      the proceeds of any life insurance policy;

                           (ii) gains arising from the sale or other disposition
                  of capital  assets or arising  from any  write-up of assets or
                  from the  acquisition by such  corporation of its  outstanding
                  debt  securities  at a cost which is less than the amounts due
                  and to become due on such securities;

                           (iii) any reversal of any contingency reserve, except
                  to the extent  that  provision  for such  contingency  reserve
                  shall have been made during such period; and

                           (iv) any reversal of any reserve for taxes,  contract
                  renegotiation or price determination,  except to the extent of
                  any  excess of any such  reserve  over the  amount  ultimately
                  determined  to be due and payable;  but in any event there may
                  be  added  to the  income  credits  for  such  period  (x) the
                  appropriate  portion of any reversal of a reserve  referred to
                  in the foregoing  clauses (iii) and (iv), after allocating the
                  amount of such reversal proportionately over the periods since
                  such reserve was created, and (y) amounts repaid,  refunded or
                  credited to such corporation  during such period on account of
                  taxes paid or accrued in respect of income arising prior to as
                  well as during such period.

                  (b) From the amount of such gross  revenues  and other  proper
income  credits  for  such  period,  determined  as  provided  in the  foregoing
subdivision  (a),  there shall be deducted  all  expenses  and all other  proper
revenue  and  income  deductions  and  charges  for such  period  determined  in
accordance with generally accepted  accounting  principles,  exclusive of losses
arising from the sale,  abandonment or other disposition of capital assets,  but
in any event there shall be deducted the  following  items,  whether or not such
items are charged or properly chargeable to income:

                           (i)      amortization  of debt discount and any other
                  amortization  of  prepaid  expenses, deferred charges or other
                  intangibles;

                           (ii)  provision  for all  taxes  of  every  kind  and
                  character,  provided  that,  for the  purposes  of this clause
                  (ii),  taxes in  respect  of  income  shall  be  appropriately
                  adjusted to reflect the effect of the  exclusion  of any items
                  of  income   credits  and   deductions   (including,   without
                  limitation  any  depreciation,   depletion,   obsolescence  or
                  amortization  claimed  by  such  corporation  for  income  tax
                  purposes  in  excess of the  amount  required  to be  deducted
                  pursuant  to clause (iv) below)  required or  permitted  to be
                  excluded in determining Net Income hereunder;

                           (iii) all provisions or appropriations,  if any, made
                  by such corporation for reserves for  contingencies  which are
                  charged or, under generally  accepted  accounting  principles,
                  should be charged to income arising during such period;
<PAGE>

                           (iv)   provision   for    depreciation,    depletion,
                  obsolescence  and  amortization  of  the  properties  of  such
                  corporation  (including,  without limitation,  amortization of
                  assets  recorded  under  capital  leases)  in  amounts  in the
                  aggregate not less than those actually  deducted on its books,
                  determined in accordance  with generally  accepted  accounting
                  principles;

                           (v) any additional amounts required to be paid during
                  such  period on account of taxes in respect of income  arising
                  prior to such  period  in excess of  reserves  for such  taxes
                  established out of income arising prior to such period; and
                           (vi)  any  additional  amounts  required  to be  paid
                  during  such period on account of  contract  renegotiation  or
                  price  redetermination  with  respect  to sales  prior to such
                  period   in  excess  of   reserves   for  such   renegotiation
                  established out of income arising prior to such period.

         Net Income  Available for Dividends of any  corporation for any period:
the Net  Income of such  corporation  for such  period  (excluding  any  amounts
included in the determination thereof on account of amounts repaid,  refunded or
credited  to such  corporation  during  such  period on account of taxes paid or
accrued in respect of income  arising prior to or during such period),  plus the
sum of all amounts deducted in the determination of such Net Income for

                  (a) interest  charges  on  indebtedness  accrued  during  such
         period;


                  (b)  amortization of debt discount applicable to such period;

                  (c)  provision  for taxes  imposed  on or  measured  by income
         determined after deduction of interest charges; and

                  (d) any  additional  amounts  required  to be paid during such
         period on account of taxes in respect of income  arising  prior to such
         period.

         Net Worth of any  corporation at any date: the sum of the capital stock
(excluding treasury stock and capital stock subscribed and unissued) and surplus
(including retained earnings and additional paid-in capital) of such corporation
as shown by the books of such corporation at such date.

         Parity  Stock:  any  stock  of  the  corporation  having  any  right or
preference  as to  dividends  or  assets  equal in any  respect  to any right or
preference of the $.70 Preferred Stock.

         Parity Stock  Payment:  any dividend or other  distribution,  direct or
indirect,  on or on account of any shares of any Parity Stock then or thereafter
outstanding, except a dividend payable solely in shares of Parity Stock, and any
redemption,  retirement,  purchase or other acquisition,  direct or indirect, of
any shares of any Parity Stock then or thereafter outstanding or of any warrants
or  rights  to  purchase  any  such  Stock,   except  to  the  extent  that  the
consideration  for any such  redemption,  retirement,  purchase  or  acquisition
consists of shares of Parity Stock.
<PAGE>

         Pro Forma Interest  and  Preferred  Dividends  at any date: the highest
aggregate amount

                  (a) all  interest  Charges  on   all   indebtedness   of   the
         corporation  and  its  Subsidiaries on a consolidated basis outstanding
         at such date, plus

                  (b) all  dividends  on the $.70  Preferred  Stock,  all Parity
         Stock and all Senior Stock,  multiplied by a fraction, the numerator of
         which is Consolidated  Net Income before provision for taxes imposed on
         or measured by income for the most  recently  completed  fiscal year of
         the  corporation,  and the  denominator  of which is  Consolidated  Net
         Income for such year,  payable or guaranteed,  after giving appropriate
         effect  to  immediately  proposed  transactions  at such  date,  by the
         corporation and its Subsidiaries  during the 12-month period commencing
         on  such  date  (or,  if the  aggregate  amount  of such  interest  and
         dividends so payable or  guaranteed  shall be greater  during any other
         12-month  period  commencing  after such date,  then  during such other
         12-month period).

         Purchase Agreements:  as defined in section 4.2 hereof.

         Securities Act:  as defined in section 4.2 hereof.

         Senior  Stock:  any  stock  of  the   corporation  having  any right or
preference  as to  dividends  or assets  senior in any  respect  to any right or
preference of the $.70 Preferred Stock.

         Subsidiary:  any  corporation  a majority  (by  number of votes) of the
Voting Stock of which is owned by the corporation or by one or more Subsidiaries
or by the corporation and one or more Subsidiaries.

         Voting  Stock,  when used with  reference  to any  corporation:  shares
(however  designated) of such  corporation  having ordinary voting power for the
election  of a  majority  of the  members  of the board of  directors  (or other
governing body) of such corporation, other than shares having such power only by
reason of the happening of a contingency.

         8.1.     Other Definitions.  As used  herein  the following  terms have
the following respective meanings:


<PAGE>



         "corporation"   shall,  where  the  context  so  permits,   include  an
association, joint stock company, business trust or other similar organization.

          "person" shall mean an individual,  a  corporation,  a partnership,  a
trust, an unincorporated organization or a government or any agency or political
subdivision thereof.

         "shares" of any corporation shall include any and all shares of capital
stock  of  such   corporation   of  any  class  or  other   shares,   interests,
participations or other equivalents  (however designated) in the capital of such
corporation.

         8.2. Accounting Terms and Principles.  All accounting terms used herein
which are not expressly defined herein shall have the respective  meanings given
to them  in  accordance  with  generally  accepted  accounting  principles,  all
computations  made pursuant  hereto shall be made in accordance  with  generally
accepted accounting principles and all financial statements shall be prepared in
accordance with generally accepted accounting principles.

                  (d)      So long as any shares of Preferred Stock of any 
                           series are outstanding:

                           (i)      Dividends on the  outstanding  Preferred 
                                    Stock of each series shall be declared and
                                    paid or set apart for payment  before any  
                                    dividends  shall be declared and paid or set
                                    apart for  payment on the Common  Stock with
                                    respect to the same quarterly dividend 
                                    period.  Dividends on any shares of 
                                    Preferred Stock shall be cumulative only if 
                                    and to the extent set forth in a certificate
                                    filed pursuant to law.  After  dividends  on
                                    all  shares of Preferred  Stock   (including
                                    cumulative  dividends  if and to the extent 
                                    any such  shares  shall be entitled thereto)
                                    shall  have been  declared  and paid or set 
                                    apart  for  payment  with respect to any  
                                    quarterly  dividend  period,  then and not 
                                    otherwise so long as any shares of the 
                                    Preferred  Stock shall remain  outstanding, 
                                    dividends may be declared and paid or set 
                                    apart for payment  with respect to the same 
                                    quarterly dividend  period  on the  Common  
                                    Stock out  of the  assets  or  funds  of the
                                    corporation legally available therefor.
<PAGE>

                                            All shares of Preferred Stock of all
                                    series  shall be of equal  rank,  preference
                                    and priority as to dividends irrespective of
                                    whether  or not the  rates of  dividends  to
                                    which the same  shall be  entitled  shall be
                                    the same and when the stated  dividends  are
                                    not paid in full,  the  shares of all series
                                    of the  Preferred  Stock shall share ratably
                                    in the payment  thereof in  accordance  with
                                    the  sums  which  would be  payable  on such
                                    shares  if all  dividends  were paid in full
                                    provided,  however,  that  any  two or  more
                                    series of the  Preferred  Stock  may  differ
                                    from  each  other  as to the  existence  and
                                    extent of the right to cumulative dividends,
                                    as aforesaid.

                           (ii)     In the event of any liquidation,  
                                    dissolution or winding up of the 
                                    corporation, whether  voluntary or  
                                    involuntary,  each series of Preferred Stock
                                    shall have preference  and  priority  over 
                                    the Common  Stock for  payment of the amount
                                    to which such series of Preferred  Stock  
                                    shall be entitled in accordance  with the
                                    provisions  thereof and each holder of 
                                    Preferred  Stock shall be entitled to be
                                    paid  in full  his  share  of such  amount, 
                                    or have a sum  sufficient  for the payment 
                                    in full set aside, before any payments shall
                                    be made to the holders of the Common  Stock.
                                    If, upon liquidation, dissolution or winding
                                    up of the corporation,  the assets of the 
                                    corporation or proceeds thereof, 
                                    distributable among the holders of the 
                                    shares of all series of the  Preferred Stock
                                    shall be insufficient  to pay, in full, the 
                                    preferential  amount  aforesaid,  then such
                                    assets,  or the  proceeds  thereof, shall be
                                    distributed  among such  holders ratably in 
                                    accordance  with the  respective  amounts 
                                    which would be payable if all amounts 
                                    payable  thereon  were  paid in full.  After
                                    the  payment  to the holders of Preferred  
                                    Stock of all such amounts to which they are 
                                    entitled, as above  provided,  the remaining
                                    assets and funds of the  corporation  shall 
                                    be divided and paid to the holders of the 
                                    Common Stock.

                  (e) Except as required by law or as determined by the Board of
Directors  pursuant to  subdivision  (b) of this Article  FOURTH,  the exclusive
rights to vote for the election of directors and for all other purposes shall be
vested in the  holders of Common  Stock,  each share  thereof  from time to time
outstanding having voting power of one vote.
<PAGE>

         FIFTH.  The minimum amount of capital with which the  corporation  will
commence  business is One Thousand Dollars ($1,000.00).

         SIXTH.  The corporation is to have perpetual existence.

         SEVENTH.  The  private  property  of the  stockholders  shall not be 
subject to the  payment of  corporate debts to any extent whatever.

         EIGHTH.  In furtherance and not in limitation of the powers  conferred 
by statute,  the board of directors is expressly authorized:

         To make, alter or repeal the by-laws of the corporation.

         To authorize and cause to be executed mortgages and liens upon the real
and personal property of the corporation.

         To set apart out of any of the funds of the  corporation  available for
dividends a reserve or reserves  for any proper  purpose and to abolish any such
reserve in the manner in which it was created.

         By resolution passed by a majority of the whole board, to designate one
or more committees, each committee to consist of two or more of the directors of
the  corporation,  which,  to the extent  provided in the  resolution  or in the
by-laws of the corporation,  shall have and may exercise the powers of the board
of directors in the  management of the business and affairs of the  corporation,
and may authorize the seal of the  corporation to be affixed to all papers which
may require it. Such  committee or  committees  shall have such name or names as
may be stated in the by-laws of the  corporation  or as may be  determined  from
time to time by resolution adopted by the board of directors.

         When and as  authorized  by the  affirmative  vote of the  holders of a
majority of the stock  issued and  outstanding  having  voting  power given at a
stockholders'  meeting duly called for that purpose,  or when  authorized by the
written  consent of the  holders of a majority  of the voting  stock  issued and
outstanding,  to sell,  lease or exchange  all of the property and assets of the
corporation,  including  its good will and its corporate  franchises,  upon such
terms and  conditions  and for such  consideration,  which may be in whole or in
part shares of stock in, and/or other  securities  of, any other  corporation or
corporations,  as its board of directors  shall deem  expedient and for the best
interests of the corporation.

         NINTH.  Meetings  of  stockholders  may be held  outside  the  State of
Delaware,  if the by-laws so provide.  The books of the  corporation may be kept
(subject  to any  provision  contained  in the  statutes)  outside  the State of
Delaware at such place or places as may be  designated  from time to time by the
board of directors or in the by-laws of the corporation.  Elections of directors
need not be by ballot unless the by-laws of the corporation shall so provide.

         TENTH. The corporation  reserves the right to amend,  alter,  change or
repeal any provision  contained in this  certificate  of  incorporation,  in the
manner now or hereafter  prescribed by statute,  and all rights  conferred  upon
stockholders herein are granted subject to this reservation.

                           4.  This  Restated  Certificate  of  Incorporation  
was  duly  adopted  by the  Board of Directors  of the  Corporation  in  
accordance  with  Section  245 of the General  Corporation  Law of the State of
Delaware.
<PAGE>

         IN WITNESS WHEREOF,  said HELIX TECHNOLOGY  CORPORATION has caused this
certificate  to be executed by Richard F. Cole,  President  of the  Corporation,
attested by Robert E. Blakelock,  Secretary of the Corporation, and affixed with
the corporate seal, this 4th day of February, 1980.


                         HELIX TECHNOLOGY CORPORATION



                         By  /s/ Richard F. Cole
                                 Richard F. Cole, President

[Seal]

ATTEST:


By /s/ Robert E. Blakelock,
         Robert E. Blakelock, Secretary


Commonwealth of Massachusetts )
                                      ) ss.
County of Middlesex                         )


         Be it remembered that on the 4th day of February, A.D. 1980, personally
came before me,  William  Williams II, a Notary Public in and for the County and
State aforesaid, Richard F. Cole, President, and Robert E. Blakelock,  Secretary
of a  corporation  of the State of Delaware,  the  corporation  described in and
which executed the foregoing certificate, known to me personally to be such, and
they,  the said Richard F. Cole and Robert E.  Blakelock,  as such President and
Secretary  respectively,  duly  executed  the  said  Certificate  before  me and
acknowledged  the said Certificate to be their act and deed and the act and deed
of said  corporation  and the facts stated therein are true; that the signatures
of the said  President  and  Secretary  of said  corporation  to said  foregoing
certificate  are in the  handwriting of the said President and Secretary of said
corporation,  respectively, and that the seal affixed to said certificate is the
common or corporate seal of said corporation.

         IN WITNESS WHEREOF,  I have hereunto set my hand and seal of office the
day and year aforesaid.



NOTARIAL SEAL                     Notary Public
                                           /s/ William Williams II

[Seal]                                     My Commission Expires: 9/18/90


<PAGE>


                            CERTIFICATE OF AMENDMENT
                                       OF
                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          HELIX TECHNOLOGY CORPORATION


         HELIX  TECHNOLOGY  CORPORATION,  a  corporation  organized and existing
under the laws of the State of Delaware, does hereby certify as follows:

         FIRST:  That the Board of  Directors of said  Corporation  by unanimous
vote pursuant to Section 141 of the General  Corporation Law of Delaware adopted
a resolution  proposing and declaring  advisable the following  amendment to the
Restated Certificate of Incorporation of the Corporation and directing that said
amendment be submitted to the stockholders for their review and consent:

                  VOTED:            That  this   Board   hereby   declares   the
                                    advisability of an amendment to the Restated
                                    Certificate   of    Incorporation   of   the
                                    Corporation  to add a new Article  ELEVENTH,
                                    and that said Article  ELEVENTH shall be and
                                    read in its entirety as follows:

         Elimination  of Certain  Liability  of  Directors.  A director  of this
Corporation   shall  not  be  personally   liable  to  the  Corporation  or  its
stockholders  for monetary  damages for breach of fiduciary  duty as a director,
except for liability (i) for any breach of the director's duty of loyalty to the
Corporation or its stockholders, (ii) for acts or omissions not in good faith or
which involve intentional  misconduct or a knowing violation of law, (iii) under
Section 174 of the Delaware General Corporation Law, or (iv) for any transaction
from which the director derived an improper personal benefit. No amendment to or
repeal of this  provision  shall apply to or have any effect on the liability or
alleged  liability  of any director for or with respect to any acts or omissions
of such director occurring prior to such amendment or repeal.

and further

                  VOTED:            That the foregoing amendment to the Restated
                                    Certificate   of   Incorporation   shall  be
                                    presented to the  stockholders  for approval
                                    at the 1987 Annual  Meeting  and that,  upon
                                    approval  of  such  amendment,   the  proper
                                    officers of the  Corporation  are authorized
                                    to execute  and file with the  Secretary  of
                                    the  State  of  Delaware  a  Certificate  of
                                    Amendment  to the  Restated  Certificate  of
                                    Incorporation  of the  Corporation,  setting
                                    forth the  amendment  so  adopted,  and upon
                                    such  filing,   such   amendment   shall  be
                                    effective.
<PAGE>

         SECOND:  That  thereafter,  pursuant to the  resolution of the Board of
Directors,  the 1987 Annual Meeting of the  stockholders  of the Corporation was
duly called and held,  upon notice in accordance with Section 222 of the General
Corporation law of Delaware,  at which meeting the necessary number of shares as
required by statute were voted in favor of the amendment.

         THIRD:  That the  aforesaid  amendment was duly adopted in accordance  
with the applicable  provisions of Section 242 of the General Corporation Law of
Delaware.

         FOURTH:  That the  capital of the  Corporation  shall not be reduced  
under or by reason of the aforesaid amendment.

         IN WITNESS  WHEREOF,  HELIX  TECHNOLOGY  CORPORATION  has  caused  this
Certificate  to be signed by Robert J. Lepofsky,  its  President,  and Robert E.
Blakelock, its Secretary, this 27th day of April 1987.

[Seal]                                      HELIX TECHNOLOGY CORPORATION



                           By: /s/ Robert J. Lepofsky
                                   Robert J. Lepofsky
                                   President



ATTEST: /s/ Robert E. Blakelock
         Robert E. Blakelock, Secretary



                          COMMONWEALTH OF MASSACHUSETTS

County of Suffolk, ss.

         BE IT REMEMBERED,  that on this 27th day of April 1987  personally came
before me a Notary Public in and for the County and  Commonwealth  as aforesaid,
Robert J. Lepofsky,  President,  and Robert E.  Blakelock,  Secretary,  of HELIX
TECHNOLOGY CORPORATION,  and they duly executed the foregoing Certificate before
me and severally  acknowledged the said Certificate to be their act and deed and
the act and deed of said Corporation and that the facts stated therein are true;
that the signatures of the said officers are in their  handwriting  and that the
seal  affixed  to said  Certificate  is the  common  or  corporate  seal of said
Corporation.

         IN WITNESS WHEREOF,  I have hereunto set my hand and seal of office the
day and year aforesaid.



                                  /s/Kathleen S. Tillotsan
                                  Notary Public

                                  My Commission Expires: November 13, 1992


<PAGE>


                            CERTIFICATE OF AMENDMENT
                                       OF
                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          HELIX TECHNOLOGY CORPORATION


HELIX  TECHNOLOGY  CORPORATION,  a corporation  organized and existing under the
laws of the State of Delaware, does hereby certify as follows:

         FIRST:  That the Board of  Directors of said  Corporation  by unanimous
vote pursuant to Section 141 of the General  Corporation Law of Delaware adopted
a resolution  proposing and declaring  advisable the following  amendment to the
Restated Certificate of Incorporation of the Corporation and directing that said
amendment be submitted to the stockholders for their review and consent:

                  VOTED:            That  the  Board  of   Directors   of  Helix
                                    Technology  Corporation  hereby approves and
                                    declares   advisable  an  amendment  to  the
                                    Restated  Certificate  of  Incorporation  of
                                    this Corporation as follows:

                                    That  ARTICLE  FOURTH  (a) of  the  Restated
                                    Certificate   of   Incorporation   of   this
                                    Corporation  be and it is hereby  amended to
                                    increase the number of authorized  shares of
                                    capital  stock  of  the   Corporation   from
                                    7,000,000   to   12,000,000   so  that  said
                                    PARTICLE  FOURTH  (a)  shall  be and read as
                                    follows:

         FOURTH.  (a) The total number of shares of stock which the  Corporation
is authorized to issue is 12,000,000, of which 10,000,000 shares shall be common
stock,  par  value of $1 per  share  ("Common  Stock")  and  2,000,000  shall be
preferred stock, par value $1 per share ("Preferred Stock").

and further,

                  VOTED:            That the foregoing amendment to the Restated
                                    Certificate   of   Incorporation   of   this
                                    Corporation be submitted to the stockholders
                                    of this  Corporation  for their  approval at
                                    the 1988 Annual Meeting of Stockholders.

         SECOND:  That  thereafter,  pursuant to the  resolution of the Board of
Directors,  the 1988 Annual Meeting of the  Stockholders  of the Corporation was
duly called and held,  upon notice in accordance with Section 222 of the General
Corporation Law of Delaware,  at which meeting the necessary number of shares as
required by statute were voted in favor of the amendment.




<PAGE>


         THIRD:  That the  aforesaid  amendment was duly adopted in accordance  
with the applicable  provisions of Section 242 of the General Corporation law of
Delaware.

         FOURTH:  That the  capital of the  Corporation  shall not be reduced  
under or by reason of the aforesaid amendment.

         IN WITNESS  WHEREOF,  HELIX  TECHNOLOGY  CORPORATION  has  caused  this
Certificate  to be signed by Robert J. Lepofsky,  its  President,  and Robert E.
Blakelock, its Secretary, this 11th day of May 1988.

 [Seal]                                     HELIX TECHNOLOGY CORPORATION



                                           By:      /s/Robert J. Lepofsky
                                                    Robert J. Lepofsky
                                                    President



ATTEST:  /s/Robert E. Blakelock
                  Robert E. Blakelock, Secretary

                          COMMONWEALTH OF MASSACHUSETTS


County of Middlesex, ss.

         BE IT  REMEMBERED,  that on this 10th day of May 1988  personally  came
before me a Notary Public in and for the County and  Commonwealth  as aforesaid,
Robert J. Lepofsky,  President,  and Robert E.  Blakelock,  Secretary,  of HELIX
TECHNOLOGY CORPORATION,  and they duly executed the foregoing Certificate before
me and severally  acknowledged the said Certificate to be their act and deed and
the act and deed of said Corporation and that the facts stated therein are true;
that the signatures of the said officers are in their  handwriting  and that the
seal  affixed  to said  Certificate  is the  common  or  corporate  seal of said
Corporation.

         IN WITNESS WHEREOF,  I have hereunto set my hand and seal of office the
day and year aforesaid.

                                                 /s/Doris G Gillimore
                                                 Notary Public

                                                 My Commission expires:

                                                 September 3, 1993


<PAGE>




                            CERTIFICATE OF AMENDMENT
                                       OF
                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          HELIX TECHNOLOGY CORPORATION

         HELIX  TECHNOLOGY  CORPORATION,  a  corporation  organized and existing
under the laws of the State of Delaware, does hereby certify as follows:

         FIRST:  That the Board of  Directors of said  Corporation  by unanimous
vote pursuant to Section 141 of the General  Corporation Law of Delaware adopted
a resolution  proposing and declaring  advisable the following  amendment to the
Restated Certificate of Incorporation of the Corporation and directing that said
amendment be submitted to the stockholders for their review and consent:

         VOTED:            That the  Board  of  Directors  of  Helix  Technology
                           Corporation hereby approves and declares advisable an
                           amendment    to   the   Restated    Certificate    of
                           Incorporation of this Corporation as follows:

                           That ARTICLE  FOURTH (a) of the Restated  Certificate
                           of  Incorporation  of this  Corporation  be and it is
                           hereby  amended to increase the number of  authorized
                           shares  of  capital  stock  of the  Corporation  from
                           12,000,000 to 32,000,000 so that said ARTICLE  FOURTH
                           (a) shall be and read as follows:

         FOURTH.  (a) The total  number of shares  of  capital  stock  which the
Corporation is authorized to issue is  32,000,000,  of which  30,000,000  shares
shall be common  stock,  par value $1 per share  ("Common  Stock") and 2,000,000
shares shall be preferred stock, par value $1 per share ("Preferred Stock").

and further,

         VOTED:            That  the   foregoing   amendment   to  the  Restated
                           Certificate of  Incorporation  of this Corporation be
                           submitted to the stockholders of this Corporation for
                           their   approval  at  the  1995  Annual   Meeting  of
                           Stockholders.

         SECOND:  That  thereafter,  pursuant to the  resolution of the Board of
Directors,  the 1995 Annual Meeting of  Stockholders of the Corporation was duly
called and held,  upon  notice in  accordance  with  Section  222 of the General
Corporation Law of Delaware,  at which meeting the necessary number of shares as
required by statute were voted in favor of the amendment.

         THIRD:  That the aforesaid amendment was duly adopted in accordance 
with the applicable  provisions of Section 242 of the General Corporation Law of
Delaware.

         FOURTH:  That the capital of the Corporation shall not be reduced under
or by reason of the aforesaid amendment.
<PAGE>

         IN WITNESS  WHEREOF,  HELIX  TECHNOLOGY  CORPORATION  has  caused  this
Certificate  to be signed by Robert J.  Lepofsky,  its  President,  and  William
Williams II, its Assistant Secretary, this 20th day of April, 1995.


(SEAL)                                            HELIX TECHNOLOGY CORPORATION



                                                  By:/s/ Robert J. Lepofsky
                                                  Robert J. Lepofsky, President

ATTEST:/s/ William Williams II
           William Williams II,
           Assistant Secretary


<PAGE>




                            CERTIFICATE OF AMENDMENT
                                       OF
                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          HELIX TECHNOLOGY CORPORATION

         HELIX  TECHNOLOGY  CORPORATION,  a  corporation  organized and existing
under the laws of the State of Delaware (the "Corporation"), does hereby certify
as follows:

         FIRST:  That the Board of  Directors of said  Corporation  by unanimous
vote pursuant to Section 141 of the General  Corporation Law of Delaware adopted
a resolution  proposing and declaring  advisable the following  amendment to the
Restated Certificate of Incorporation of the Corporation and directing that said
amendment be submitted to the stockholders for their review and consent:

         VOTED:            That the  Board  of  Directors  of  Helix  Technology
                           Corporation hereby approves and declares advisable an
                           amendment    to   the   Restated    Certificate    of
                           Incorporation of this Corporation as follows:

                           That ARTICLE  FOURTH (a) of the Restated  Certificate
                           of  Incorporation  of this  Corporation  be and it is
                           hereby amended to increase the  authorized  shares of
                           capital stock of the  Corporation  from 32,000,000 to
                           62,000,000  so that said ARTICLE  FOURTH (a) shall be
                           and read as follows:

         FOURTH.  (a) The total  number of shares  of  capital  stock  which the
Corporation is authorized to issue is  62,000,000,  of which  60,000,000  shares
shall be common  stock,  par value $1 per share  ("Common  Stock") and 2,000,000
shares shall be preferred stock, par value $1 per share ("Preferred Stock").

and further,

         VOTED:            That  the   foregoing   amendment   to  the  Restated
                           Certificate of  Incorporation  of this Corporation be
                           submitted to the stockholders of this Corporation for
                           their   approval  at  the  1998  Annual   Meeting  of
                           Stockholders.

         SECOND:  That  thereafter,  pursuant to the  resolution of the Board of
Directors,  the 1998 Annual Meeting of  Stockholders of the Corporation was duly
called and held,  upon  notice in  accordance  with  Section  222 of the General
Corporation Law of Delaware,  at which meeting the necessary number of shares as
required by statute were voted in favor of the amendment.

         THIRD:  That the aforesaid amendment was duly adopted in accordance 
with the applicable  provisions of Section 242 of the General Corporation Law of
Delaware.

         FOURTH:  That the capital of the Corporation shall not be reduced under
or by reason of the aforesaid amendment.
<PAGE>

         IN WITNESS  WHEREOF,  HELIX  TECHNOLOGY  CORPORATION  has  caused  this
Certificate  to be signed by Robert J.  Lepofsky,  its  President,  and  William
Williams II, its Assistant Secretary, this 29th day of April, 1998.


(SEAL)                                  HELIX TECHNOLOGY CORPORATION



                                        By:/s/ Robert J. Lepofsky
                                        Robert J. Lepofsky, President


ATTEST:/s/ William Williams II
         William Williams II,
         Assistant Secretary




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