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                                                                   Exhibit 10(j)


                          EXECUTIVE SEVERANCE AGREEMENT
                          -----------------------------

     AGREEMENT made as of the 14th day of May, 1998, by and between Instron
Corporation, a Massachusetts corporation with its principal place of business in
Canton, Massachusetts (the "Company"), and [Name of Executive] of [Address of
Executive] (the "Executive").

     1. Purpose. The Company considers it essential to the best interests of its
stockholders to foster the continuous employment of key management personnel.
The Board of Directors of the Company (the "Board") recognizes, however, that,
as is the case with many publicly held corporations, the possibility of a Change
in Control (as defined in Section 2 hereof) exists and that such possibility,
and the uncertainty and questions which it may raise among management, may
result in the departure or distraction of management personnel to the detriment
of the Company and its stockholders. Therefore, the Board has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of members of the Company's management, including the
Executive, to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a Change in
Control. Nothing in this Agreement shall be construed as creating an express or
implied contract of employment and, except as otherwise agreed in writing
between the Executive and the Company, the Executive shall not have any right to
be retained in the employ of the Company.

     2. Change in Control. A "Change in Control" shall be deemed to have
occurred in any one of the following events:

     (a) any "person" (as such term is used in Sections 13(d) and 14(d)(2) of
the Securities Exchange Act of 1934 (the "Act")) becomes a "beneficial owner"
(as such term is defined in Rule 13d-3 promulgated under the Act) (other than
the Company, any trustee or other fiduciary holding securities under an employee
benefit plan of the Company, or any corporation owned, directly or indirectly,
by the stockholders of the Company in substantially the same proportions as
their ownership of stock of the Company), directly or indirectly, of securities
of the Company representing fifty percent (50%) or more of the combined voting
power of the Company's then outstanding securities;

     (b) persons who, as of March 4, 1998, constituted the Company's Board (the
"Incumbent Board") cease for any reason, including without limitation as a
result of a tender offer, proxy contest, merger or similar transaction, to
constitute at least a majority of the Board, provided that any person becoming a
director of the Company subsequent to March 4, 1998 whose election was approved
by at least a majority of the directors then comprising the Incumbent Board
shall, for purposes of this Agreement, be considered a member of the Incumbent
Board;

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     (c) the stockholders of the Company approve a merger or consolidation of
the Company with any other corporation or other entity, other than (a) a merger
or consolidation which would result in the voting securities of the Company
outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into voting securities of the
surviving entity) more than 80% of the combined voting power of the voting
securities of the Company or such surviving entity outstanding immediately after
such merger or consolidation or (b) a merger or consolidation effected to
implement a recapitalization of the Company (or similar transaction) in which no
"person" (as hereinabove defined) acquires more than 50% of the combined voting
power of the Company's then outstanding securities; or

     (d) the stockholders of the Company approve a plan of complete liquidation
of the Company or an agreement for the sale or disposition by the Company of all
or substantially all of the Company's assets.

     3. Terminating Event. A "Terminating Event" shall mean any of the events
provided in this Section 3 occurring subsequent to a Change in Control as
defined in Section 2:

     (a) termination by the Company of the employment of the Executive with the
Company for any reason other than (A) a willful act of dishonesty by the
Executive with respect to any matter involving the Company or any subsidiary or
affiliate, or (B) conviction of the Executive of a crime involving moral
turpitude, or (C) the gross or willful failure by the Executive to substantially
perform the Executive's duties with the Company, or (D) the failure by the
Executive to perform his full-time duties with the Company by reason of his
death, disability or retirement; provided, however, that a Terminating Event
shall not be deemed to have occurred pursuant to this Section 3(a) solely as a
result of the Executive being an employee of any direct or indirect successor to
the business or assets of the Company, rather than continuing as an employee of
the Company following a Change in Control. For purposes of clauses (A) and (C)
of this Section 3(a), no act, or failure to act, on the Executive's part shall
be deemed "willful" unless done, or omitted to be done, by the Executive without
reasonable belief that the Executive's act, or failure to act, was in the best
interest of the Company and its subsidiaries and affiliates. For purposes of
this Agreement, "disability" shall mean the Executive's incapacity due to
physical or mental illness which has caused the Executive to be absent from the
full-time performance of his duties with the Company for a period of six (6)
consecutive months if the Company shall have given the Executive a Notice of
Termination and, within thirty (30) days after such Notice of Termination is
given, the Executive shall not have returned to the full-time performance of his
duties. For purposes of this Agreement, "retirement" shall mean termination of
the Executive's employment in accordance with the Company's retirement policy,
not including early retirement, generally applicable to its salaried employees,
as in effect immediately prior to the Change in Control, or 


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in accordance with any retirement arrangement established with respect to the
Executive with the Executive's express written consent;

     (b) termination by the Executive of the Executive's employment with the
Company for Good Reason. Good Reason shall mean the occurrence of any of the
following events:

          (i) a substantial adverse change, not consented to by the Executive,
     in the nature or scope of the Executive's responsibilities, authorities,
     powers, functions or duties from the responsibilities, authorities, powers,
     functions or duties exercised by the Executive immediately prior to the
     Change in Control; or

          (ii) a reduction in the Executive's annual base salary as in effect on
     the date hereof or as the same may be increased from time to time except
     for across-the-board salary reductions similarly affecting all or
     substantially all management employees; or

          (iii) the relocation of the Company's offices at which the Executive
     is principally employed immediately prior to the date of a Change in
     Control to a location more than fifty (50) miles from such offices, or the
     requirement by the Company for the Executive to be based anywhere other
     than the Company's offices at such location, except for required travel on
     the Company's business to an extent substantially consistent with the
     Executive's business travel obligations immediately prior to the Change in
     Control; or

          (iv) the failure by the Company to pay to the Executive any portion of
     his compensation or to pay to the Executive any portion of an installment
     of deferred compensation under any deferred compensation program of the
     Company within fifteen (15) days of the date such compensation is due
     without prior written consent of the Executive; or

          (v) the failure by the Company to obtain an effective agreement from
     any successor to assume and agree to perform this Agreement.

     4. Severance Payment. In the event a Terminating Event occurs within
twenty-four (24) months after a Change in Control,

     (a) the Company shall pay to the Executive an amount equal to two (2) times
the "base amount" (as such term is defined in Section 280G(b)(3) of the Internal
Revenue Code of 1986, as amended (the "Code")) applicable to the Executive (the
"Base Amount"), payable in one lump-sum payment. Said amount shall be paid no
later than thirty-one (31) days following the Date of Termination (as such term
is defined in Section 8(b)); and

     (b) the Company shall pay to the Executive all reasonable legal and
arbitration fees and expenses incurred by the Executive in successfully
obtaining or enforcing any right or benefit provided by this Agreement.

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     5A. Additional Benefits. This Section 5A shall apply solely to the extent
the sum of (i) the payments made by the Company to or for the benefit of the
Executive under this Agreement (the "Severance Payment") and (ii) the value, as
calculated in accordance with Section 280G of the Code, of the benefits and
payments received by the Executive as a result of a Change in Control under any
other agreement or plan (the "Other 280G Benefits") (the sum of such Severance
Payment and the Other 280G Benefits are referred to as the "Total Severance
Benefits"), exceed 330% of the Base Amount (the "Threshold Amount").

     (a) In the event the Total Severance Benefits exceed the Threshold Amount,
then the Executive shall be entitled to receive an additional payment (a
"Gross-Up Payment") such that the net amount retained by the Executive, after
deduction of the excise tax imposed by Section 4999 of the Code (the "Excise
Tax") on the Total Severance Benefits, any Federal, state and local income tax,
employment tax and Excise Tax upon the payment provided by this subsection, and
any interest and/or penalties assessed with respect to such Excise Tax, shall be
equal to the Total Severance Benefits.

     (b) Subject to the provisions of Section 5A(c), all determinations required
to be made under this Section 5A, including the amount of such Gross-Up Payment,
shall be made by the Company's independent accounting firm (the "Accounting
Firm") which shall provide detailed supporting calculations both to the Company
and the Executive within 15 business days of the Date of Termination, if
applicable, or at such earlier time as is reasonably requested by the Company or
the Executive. For purposes of determining the amount of the Gross-Up Payment,
the Executive shall be deemed to pay federal income taxes at the highest
marginal rate of federal income taxation applicable to individuals for the
calendar year in which the Gross-Up Payment is to be made and state and local
income taxes at the highest marginal rates of individual taxation in the state
and locality of the Executive's residence on the Date of Termination, net of the
maximum reduction in federal income taxes which could be obtained from deduction
of such state and local taxes. The Gross-Up Payment, as determined pursuant to
this Section 5A(b), shall be paid to the Executive within five days of the
receipt of the Accounting Firm's determination. Any determination by the
Accounting Firm shall be binding upon the Company and the Executive. As a result
of the uncertainty in the application of Section 4999 of the Code at the time of
the initial determination by the Accounting Firm hereunder, it is possible that
Gross-Up Payments which will not have been made by the Company should have been
made (an "Underpayment"). In the event that the Company exhausts its remedies
pursuant to Section 5A(c) and the Executive thereafter is required to make a
payment of any Excise Tax, the Accounting Firm shall determine the amount of the
Underpayment that has occurred, consistent with the calculations required to be
made hereunder, and any such Underpayment, and any interest and penalties
imposed on the Underpayment and required to be paid by the Executive in
connection with the proceedings 

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described in Section 5A(c), shall be promptly paid by the Company to or for the
benefit of the Executive.

     (c) The Executive shall notify the Company in writing of any claim by the
Internal Revenue Service that, if successful, would require the payment by the
Company of the Gross-up Payment. Such notification shall be given as soon as
practicable but no later than 10 business days after the Executive knows of such
claim and shall apprise the Company of the nature of such claim and the date on
which such claim is requested to be paid. The Executive shall not pay such claim
prior to the expiration of the 30-day period following the date on which he
gives such notice to the Company (or such shorter period ending on the date that
any payment of taxes with respect to such claim is due). If the Company notifies
the Executive in writing prior to the expiration of such period that it desires
to contest such claim, the Executive shall:

          (i) give the Company any information reasonably requested by the
     Company relating to such claim,

          (ii) take such action in connection with contesting such claim as the
     Company shall reasonably request in writing from time to time, including,
     without limitation, accepting legal representation with respect to such
     claim by an attorney selected by the Company,

          (iii) cooperate with the Company in good faith in order effectively to
     contest such claim, and

          (iv) permit the Company to participate in any proceedings relating to
     such claim; provided, however that the Company shall bear and pay directly
     all costs and expenses (including additional interest and penalties)
     incurred in connection with such contest and shall indemnify and hold the
     Executive harmless, on an after-tax basis, for any Excise Tax or income
     tax, including interest and penalties with respect thereto, imposed as a
     result of such representation and payment of costs and expenses. Without
     limitation on the foregoing provisions of this Section 5A(c), the Company
     shall control all proceedings taken in connection with such contest and, at
     its sole option, may pursue or forego any and all administrative appeals,
     proceedings, hearings and conferences with the taxing authority in respect
     of such claim and may, at its sole option, either direct the Executive to
     pay the tax claimed and sue for a refund or contest the claim in any
     permissible manner, and the Executive agrees to prosecute such contest to a
     determination before any administrative tribunal, in a court of initial
     jurisdiction and in one or more appellate courts, as the Company shall
     determine; provided, however, that if the Company directs the Executive to
     pay such claim and sue for a refund, the Company shall advance the amount
     of such payment to the Executive on an interest-free basis and shall
     indemnify and hold the Executive harmless, on an after-tax 

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     basis, from any Excise Tax or income tax, including interest or penalties
     with respect thereto, imposed with respect to such advance or with respect
     to any imputed income with respect to such advance; and further provided
     that any extension of the statute of limitations relating to payment of
     taxes for the taxable year of the Executive with respect to which such
     contested amount is claimed to be due is limited solely to such contested
     amount. Furthermore, the Company's control of the contest shall be limited
     to issues with respect to which a Gross-Up Payment would be payable
     hereunder and the Executive shall be entitled to settle or contest, as the
     case may be, any other issues raised by the Internal Revenue Service or any
     other taxing authority.

     (d) If, after the receipt by the Executive of an amount advanced by the
Company pursuant to Section 5A(c), the Executive becomes entitled to receive any
refund with respect to such claim, the Executive shall (subject to the Company's
complying with the requirements of Section 5A(c)) promptly pay to the Company
the amount of such refund (together with any interest paid or credited thereon
after taxes applicable thereto). If, after the receipt by the Executive of an
amount advanced by the Company pursuant to Section 5A(c), a determination is
made that the Executive shall not be entitled to any refund with respect to such
claim and the Company does not notify the Executive in writing of its intent to
contest such denial of refund prior to the expiration of 30 days after such
determination, then such advance shall be forgiven and shall not be required to
be repaid and the amount of such advance shall offset, to the extent thereof,
the amount of Gross-Up Payment required to be paid.

     5B. Limitation on Benefits. This Section 5B shall apply solely to the
extent the Total Severance Benefits are less than or equal to the Threshold
Amount.

     (a) Solely in the event the Total Severance Benefits are less than or equal
to the Threshold Amount, it is the intention of the Executive and of the Company
that no payments of the Total Severance Benefits by the Company to or for the
benefit of the Executive under this Agreement or any other agreement or plan
shall be non-deductible to the Company by reason of the operation of Section
280G of the Code relating to parachute payments. Accordingly, and
notwithstanding any other provision of this Agreement or any such agreement or
plan, if by reason of the operation of said Section 280G, any such payments
exceed the amount which can be deducted by the Company, the Severance Payment
which the Executive is entitled to receive under this Agreement shall be reduced
by that amount which exceeds the maximum amount deductible by the Company under
Section 280G. To the extent that Severance Payments exceeding such maximum
deductible amount have been made to or for the benefit of the Executive, such
excess payments shall be refunded to the Company with interest thereon at the
applicable federal rate determined under Section 1274(d) of the Code, compounded
annually, or at such other rate as may be required in order that no such
payments shall be non-deductible to the Company by reason of the operation of
said Section 280G.

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     (b) If any dispute between the Company and the Executive as to any of the
amounts to be determined under this Section 5B, or the method of calculating
such amounts, cannot be resolved by the Company and the Executive, either the
Company or the Executive, after giving three (3) days' written notice to the
other, may refer the dispute to a partner in the Boston office of a firm of
independent certified public accountants selected jointly by the Company and the
Executive. The determination of such partner as to the amount to be determined
under Section 513(a) and the method of calculating such amounts shall be final
and binding on both the Company and the Executive. The Company shall bear the
costs of any such determination if the amount determined by such partner differs
to any material degree from the final amount proposed by the Company to the
Executive before submission to such partner. If there is no such material
difference, the costs of any such determination shall be evenly divided between
the Company and the Executive.

     6. Term. This Agreement shall take effect on the date first set forth above
and shall terminate upon the earlier of (a) the termination by the Company of
the employment of the Executive because of (A) a willful act of dishonesty by
the Executive with respect to any matter involving the Company or any subsidiary
or affiliate, or (B) conviction of the Executive of a crime involving moral
turpitude, or (C) the gross or willful failure by the Executive to substantially
perform the Executive's duties with the Company, or (D) the failure by the
Executive to perform his full-time duties with the Company by reason of his
death, disability (as defined in Section 3(a)) or retirement (as defined in
Section 3(a)), (b) the resignation or termination of the Executive for any
reason prior to a Change in Control, or (c) the resignation of the Executive
after a Change in Control for any reason other than the occurrence of any of the
events enumerated in Section 3(b)(i)-(v) of this Agreement.

     7. Withholding. All payments made by the Company under this Agreement shall
be net of any tax or other amounts required to be withheld by the Company under
applicable law.

     8. Notice and Date of Termination; Disputes, Etc.

     (a) Notice of Termination. After a Change in Control and during the term of
this Agreement, any purported termination of the Executive's employment (other
than by reason of death) shall be communicated by written Notice of Termination
from one party hereto to the other party hereto in accordance with this Section
8. For purposes of this Agreement, a "Notice of Termination" shall mean a notice
which shall indicate the specific termination provision in this Agreement relied
upon and the Date of Termination. Further, a Notice of Termination pursuant to
one or more of clauses (A) through (C) of Section 3(a) hereof is required to
include a copy of a resolution duly adopted by the affirmative vote of not less
than two-thirds (2/3) of the entire membership of the Board at a meeting of the
Board (after reasonable notice to the Executive and an opportunity for the
Executive, accompanied by the Executive's counsel, to be heard before the Board)
finding that, in the good faith opinion of the 

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Board, the termination met the criteria set forth in one or more of clauses (A)
through (C) of Section 3(a) hereof.

     (b) Date of Termination. "Date of Termination", with respect to any
purported termination of the Executive's employment after a Change in Control
and during the term of this Agreement, shall mean (i) if the Executive's
employment is terminated for disability, thirty (30) days after Notice of
Termination is given (provided that the Executive shall not have returned to the
full-time performance of the Executive's duties during such thirty (30) day
period) and (ii) if the Executive's employment is terminated for any other
reason, the date specified in the Notice of Termination. In the case of a
termination by the Company other than a termination pursuant to one or more of
clauses (A) through (C) of Section 3(a) (which may be effective immediately),
the Date of Termination shall not be less than thirty (30) days after the Notice
of Termination is given. In the case of a termination by the Executive, the Date
of Termination shall not be less than fifteen (15) days from the date such
Notice of Termination is given. Notwithstanding Section 3(a) of this Agreement,
in the event that the Executive gives a Notice of Termination to the Company,
the Company may unilaterally accelerate the Date of Termination and such
acceleration shall not result in a Terminating Event for purposes of Section
3(a) of this Agreement.

     (c) No Mitigation. The Company agrees that, if the Executive's employment
by the Company is terminated during the term of this Agreement, the Executive is
not required to seek other employment or to attempt in any way to reduce any
amounts payable to the Executive by the Company pursuant to Section 4(a) and (b)
hereof. Further, the amount of any payment provided for in this Agreement shall
not be reduced by any compensation earned by the Executive as the result of
employment by another employer, by retirement benefits, by offset against any
amount claimed to be owed by the Executive to the Company or otherwise.

     (d) Settlement and Arbitration of Disputes. Any controversy or claim
arising out of or relating to this Agreement or the breach thereof shall be
settled exclusively by arbitration in accordance with the laws of the
Commonwealth of Massachusetts by three arbitrators, one of whom shall be
appointed by the Company, one by the Executive and the third by the first two
arbitrators. If the first two arbitrators cannot agree on the appointment of a
third arbitrator, then the third arbitrator shall be appointed by the American
Arbitration Association in the City of Boston. Such arbitration shall be
conducted in the City of Boston in accordance with the rules of the American
Arbitration Association for commercial arbitrations, except with respect to the
selection of arbitrators which shall be as provided in this Section 8(d).
Judgment upon the award rendered by the arbitrators may be entered in any court
having jurisdiction thereof.

     9. Assignment; Prior Agreements. Neither the Company nor the Executive may
make any assignment of this Agreement or any interest herein, by operation of
law or otherwise, without the prior written consent of the other party, and
without such consent any attempted transfer shall be null and void and of no
effect. This Agreement shall inure to the 

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benefit of and be binding upon the Company and the Executive, their respective
successors, executors, administrators, heirs and permitted assigns. In the event
of the Executive's death after a Terminating Event but prior to the completion
by the Company of all payments due him under Section 4(a) and (b) of this
Agreement, the Company shall continue such payments to the Executive's
beneficiary designated in writing to the Company prior to his death (or to his
estate, if the Executive fails to make such designation).

     10. Enforceability. If any portion or provision of this Agreement shall to
any extent be declared illegal or unenforceable by a court of competent
jurisdiction, then the remainder of this Agreement, or the application of such
portion or provision in circumstances other than those as to which it is so
declared illegal or unenforceable, shall not be affected thereby, and each
portion and provision of this Agreement shall be valid and enforceable to the
fullest extent permitted by law.

     11. Waiver. No waiver of any provision hereof shall be effective unless
made in writing and signed by the waiving party. The failure of any party to
require the performance of any term or obligation of this Agreement, or the
waiver by any party of any breach of this Agreement, shall not prevent any
subsequent enforcement of such term or obligation or be deemed a waiver of any
subsequent breach.

     12. Notices. Any notices, requests, demands and other communications
provided for by this Agreement shall be sufficient if in writing and delivered
in person or sent by registered or certified mail, postage prepaid, to the
Executive at the last address the Executive has filed in writing with the
Company, or to the Company at its main office, attention of the Board of
Directors.

     13. Effect on Other Plans. An election by the Executive to resign after a
Change in Control under the provisions of this Agreement shall not be deemed a
voluntary termination of employment by the Executive for the purpose of
interpreting the provisions of any of the Company's benefit plans, programs or
policies. Nothing in this Agreement shall be construed to limit the rights of
the Executive under the Company's benefit plans, programs or policies except as
otherwise provided in Section 5 hereof, and except that the Executive shall have
no rights to any severance benefits under any severance pay plan.

     14. Amendment. This Agreement may be amended or modified only by a written
instrument signed by the Executive and by a duly authorized representative of
the Company.

     15. Governing Law. This is a Massachusetts contract and shall be construed
under and be governed in all respects by the laws of the Commonwealth of
Massachusetts.

     16. Obligations of Successors. In addition to any obligations imposed by
law upon any successor to the Company, the Company will use its best efforts to
require any successor 

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(whether direct or indirect, by purchase, merger, consolidation or otherwise) to
all or substantially all of the business or assets of the Company to expressly
assume and agree to perform this Agreement in the same manner and to the same
extent that the Company would be required to perform if no such succession had
taken place.

     17. Confidential Information. The Executive shall never use, publish or
disclose in a manner adverse to the Company's interests, any proprietary or
confidential information relating to (a) the business, operations or properties
of the Company or any subsidiary or other affiliate of the Company, or (b) any
materials, processes, business practices, technology, know-how, research,
programs, customer lists, customer requirements or other information used in the
manufacture, sale or marketing of any of the respective products or services of
the Company or any subsidiary or other affiliate of the Company; provided,
however, that no breach or alleged breach of this Section 17 shall entitle the
Company to fail to comply fully and in a timely manner with any other provision
hereof. Nothing in this Agreement shall preclude the Company from seeking money
damages, or equitable relief by injunction or otherwise without the necessity of
proving actual damage to the Company, for any breach by the Executive hereunder.

     IN WITNESS WHEREOF, this Agreement has been executed as a sealed instrument
by the Company by its duly authorized officer, and by the Executive, as of the
date first above written.

                                        INSTRON CORPORATION

                                        By: 
                                            -----------------------------
                                            Name:  
                                            Title:  
                                                   


                                        
                                        -----------------------------
                                        [Name of Executive]


29680.c3

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