Exhibit (10.s)


                             FIRST AMENDMENT TO THE
                    MET-PRO CORPORATION SALARIED PENSION PLAN


        This First Amendment to the Met-Pro  Corporation  Salaried  Pension Plan
(the "Plan") is made by Met Pro Corporation (the "Company").


                              W I T N E S S E T H:


        WHEREAS,the  Company  established  the Plan for its  eligible  employees
effective as of  September 1, 1968,  and amended and restated as of September 1,
2000; and

        WHEREAS,  the Company  reserved the right in Section 16.1 of the Plan to
amend the Plan at any time; and

        WHEREAS,  the  Company  now  desires  to amend the Plan to make  certain
changes  as  required  or  permitted  by the  Economic  Growth  and  Tax  Relief
Reconciliation  Act of 2001;  to make  certain  required  changes  to the Plan's
claims  procedures;  to add  Pristine  Hydrochemical,  Inc.  as a  participating
employer;  and to revise the use of mortality  tables for certain purposes under
the Plan.

        NOW, THEREFORE, the Plan is hereby amended as set forth below.

Preamble
--------

1.      Adoption and effective date of amendment.  This amendment of the Met-Pro
        ----------------------------------------
        Corporation  Salaried  Pension  Plan (the  "Plan") is adopted to reflect
        certain provisions of the Economic Growth and Tax Relief  Reconciliation
        Act of 2001  ("EGTRRA"),  and to make certain other changes to the Plan.
        This   amendment  is  intended  as  good  faith   compliance   with  the
        requirements  of EGTRRA and is to be construed in accordance with EGTRRA
        and  guidance  issued  thereunder.  Except as otherwise  provided,  this
        amendment  shall be effective as of the first day of the first plan year
        beginning after December 31, 2001.

                                      -1-
<PAGE>


2.      Supersession of inconsistent provisions.  This amendment shall supersede
        ---------------------------------------
        the  provisions  of  the  plan  to  the  extent  those   provisions  are
        inconsistent with the provisions of this amendment.

Section 1. Limitations on Benefits
           -----------------------

1.      Effective  date.  This section shall be effective for  limitation  years
        ending after December 31, 2001.

2.      Definitions.
        -----------

        2.1     Defined benefit dollar  limitation.  The "defined benefit dollar
                ----------------------------------
                limitation"  is $160,000,  as adjusted,  effective  January 1 of
                each year,  under  section  415(d) of the Code in such manner as
                the  Secretary  shall  prescribe,  and  payable in the form of a
                straight  life annuity.  A limitation as adjusted  under section
                415(d) will apply to limitation  years ending with or within the
                calendar year for which the adjustment applies.

        2.2     Maximum permissible  benefit.  The "maximum permissible benefit"
                ----------------------------
                is the lesser of the defined  benefit  dollar  limitation or the
                defined  benefit  compensation  limitation  (both adjusted where
                required,  as provided in (a) and, if applicable,  in (b) or (c)
                below).

                (a)     If  the   Participant   has  fewer   than  10  years  of
                        participation  in the Plan,  the defined  benefit dollar
                        limitation  shall be multiplied  by a fraction,  (i) the
                        numerator  of which  is the  number  of  years  (or part
                        thereof)  of  participation  in the  Plan  and  (ii) the
                        denominator of which is 10. In the case of a Participant
                        who  has  fewer  than  10  years  of  service  with  the
                        employer,  the defined benefit  compensation  limitation
                        shall be multiplied by a fraction,  (i) the numerator of
                        which is the  number  of  years  (or  part  thereof)  of
                        service with the employer  and (ii) the  denominator  of
                        which is 10.

                (b)     If the benefit of a Participant  begins prior to age 62,
                        the defined benefit dollar limitation  applicable to the
                        Participant  at such  earlier  age is an annual  benefit
                        payable in the form of a straight life annuity beginning
                        at the earlier age that is the  actuarial  equivalent of
                        the defined benefit dollar limitation  applicable to the
                        Participant  at age 62  (adjusted  under (a)  above,  if
                        required).   The  defined   benefit  dollar   limitation
                        applicable  at an age prior to age 62 is  determined  as
                        the lesser of (i) the actuarial equivalent (at such age)
                        of the defined benefit dollar limitation  computed using
                        the interest rate and mortality  table  specified in the
                        Plan  for  early   retirement  and  (ii)  the  actuarial
                        equivalent  (at such age) of the defined  benefit dollar
                        limitation  computed using a 5 percent interest rate and


                                      -2-
<PAGE>

                        the applicable  mortality table as defined in Appendix A
                        of the Plan. Any decrease in the defined  benefit dollar
                        limitation  determined in accordance with this paragraph
                        (b) shall not reflect a mortality  decrement if benefits
                        are not forfeited upon the death of the Participant.  If
                        any  benefits  are  forfeited   upon  death,   the  full
                        mortality decrement is taken into account.

                (c)     If  the  benefit  of  a  Participant  begins  after  the
                        Participant  attains age 65, the defined  benefit dollar
                        limitation  applicable to the  Participant  at the later
                        age is the  annual  benefit  payable  in the  form  of a
                        straight life annuity beginning at the later age that is
                        actuarially  equivalent  to the defined  benefit  dollar
                        limitation  applicable  to  the  Participant  at  age 65
                        (adjusted under (a) above,  if required).  The actuarial
                        equivalent  of the  defined  benefit  dollar  limitation
                        applicable  at an age after age 65 is  determined as (i)
                        the lesser of the actuarial  equivalent (at such age) of
                        the  defined  benefit  dollar  limitation  computed  the
                        interest rate and mortality  table specified in the Plan
                        for late  retirement  and (ii) the actuarial  equivalent
                        (at such age) of the defined  benefit dollar  limitation
                        computed using a 5 percent  interest rate assumption and
                        the applicable  mortality table as defined in Appendix A
                        of the Plan. For these purposes,  mortality  between age
                        65 and the  age at  which  benefits  commence  shall  be
                        ignored.

Section 2. Increase in Compensation Limit
           ------------------------------

1.      Increase in limit.  The annual  compensation of each  Participant  taken
        -----------------
        into account in determining  benefit accruals in any Plan Year beginning
        after December 31, 2001, shall not exceed $200,000.  Annual compensation
        means  compensation  during  the  Plan  Year or such  other  consecutive
        12-month period over which  compensation is otherwise  determined  under
        the Plan (the determination period). For purposes of determining benefit
        accruals in a Plan Year beginning  after December 31, 2001, the $200,000
        limitation on compensation shall also apply for any prior  determination
        period.

2.      Cost-of-living  adjustment. The $200,000 limit on annual compensation in
        --------------------------
        paragraph 1 shall be adjusted for cost-of-living increases in accordance
        with section 401(a)(17)(B) of the Code. The cost-of-living adjustment in
        effect  for a  calendar  year  applies  to annual  compensation  for the
        determination period that begins with or within such calendar year.



                                      -3-
<PAGE>


Section 3. Modification of Top-Heavy Rules
           -------------------------------

1.      Effective  date.  This section  shall apply for purposes of  determining
        ---------------
        whether the Plan is a top-heavy  Plan under  section  416(g) of the Code
        for Plan Years  beginning  after December 31, 2001, and whether the Plan
        satisfies the minimum  benefits  requirements  of section  416(c) of the
        Code for such years. This section amends Article 17 of the Plan.

2.      Determination of top-heavy status.
        ----------------------------------

        2.1     Key employee. Key employee means any employee or former employee
                ------------
                (including  any  deceased  employee)  who at any time during the
                Plan Year that includes the determination date was an officer of
                the employer  having annual  compensation  greater than $130,000
                (as adjusted under section  416(i)(1) of the Code for Plan Years
                beginning  after  December 31, 2002),  a 5-percent  owner of the
                employer,  or a 1-percent  owner of the employer  having  annual
                compensation  of more than  $150,000.  For this purpose,  annual
                compensation  means  compensation  within the meaning of section
                415(c)(3)  of  the  Code.  The  determination  of  who  is a key
                employee  will be made in accordance  with section  416(i)(1) of
                the Code and the  applicable  regulations  and other guidance of
                general applicability issued thereunder.

        2.2     Determination  of present  values and amounts.  This section 2.2
                ---------------------------------------------
                shall apply for purposes of  determining  the present  values of
                accrued   benefits  and  the  amounts  of  account  balances  of
                employees as of the determination date.

                2.2.1   Distributions  during year  ending on the  determination
                        --------------------------------------------------------
                        date.  The present  values of accrued  benefits  and the
                        ----
                        amounts of account  balances  of an  employee  as of the
                        determination   date   shall   be   increased   by   the
                        distributions  made with respect to the  employee  under
                        the  Plan and any plan  aggregated  with the Plan  under
                        section  416(g)(2) of the Code during the 1-year  period
                        ending on the determination date. The preceding sentence
                        shall also  apply to  distributions  under a  terminated
                        plan which, had it not been terminated,  would have been
                        aggregated  with the Plan under section  416(g)(2)(A)(i)
                        of the Code.  In the case of a  distribution  made for a
                        reason other than  separation  from service,  death,  or
                        disability,   this   provision   shall  be   applied  by
                        substituting "5-year period" for "1-year period."

                2.2.2   Employees not performing  services during year ending on
                        --------------------------------------------------------
                        the   determination   date.  The  accrued  benefits  and
                        --------------------------
                        accounts  of  any   individual  who  has  not  performed
                        services for the employer during the 1-year period


                                      -4-

<PAGE>


                        ending on the determination date shall not be taken into
                        account.

3.      Minimum  benefits.  For  purposes  of  satisfying  the  minimum  benefit
        -----------------
        requirements  of  section  416(c)(1)  of  the  Code  and  the  Plan,  in
        determining  years of service  with the  employer,  any service with the
        employer  shall be  disregarded  to the extent that such service  occurs
        during a Plan Year when the Plan benefits (within the meaning of section
        410(b) of the Code) no key employee or former key employee.

Section 4. Direct Rollovers of Plan Distributions
           --------------------------------------

1.      Effective  date.  This section shall apply to  distributions  made after
        ---------------
        December 31, 2001.

2.      Modification of definition of eligible  retirement plan. For purposes of
        -------------------------------------------------------
        the direct  rollover  provisions in section 8.9 of the Plan, an eligible
        retirement plan shall also mean an annuity contract described in section
        403(b) of the Code and an eligible plan under section 457(b) of the Code
        which is maintained by a state, political subdivision of a state, or any
        agency or instrumentality of a state or political subdivision of a state
        and which agrees to separately account for amounts transferred into such
        plan from this Plan.  The definition of eligible  retirement  plan shall
        also apply in the case of a distribution to a surviving  spouse, or to a
        spouse or former  spouse who is the  alternate  payee  under a qualified
        domestic relation order, as defined in section 414(p) of the Code.

Section 5. Definition of Pristine Hydrochemical, Inc.
           ------------------------------------------

1.      The  following  definition  is  inserted  as  section  1.40 of Article I
        (definitions) of the Plan and the remainder of the Article is renumbered
        accordingly:

        "Pristine  Hydrochemical"  shall  mean  Pristine  Hydrochemical,  Inc. a
        subsidiary of Met-Pro Corporation.

2.      Section  1.53,  definition  of  Subsidiary,  is amended  by adding  "and
        effective  June  1,  2002,  Pristine  Hydrochemical"  at the  end of the
        section.

Section 6. Credited Service
           ----------------

1.      Section 1.35 of the Plan is amended by adding the following  sentence to
        the end:

        "Past  Service  Date" shall mean June 1, 2002 for  Employees of Pristine
        Hydrochemical."

                                      -5-
<PAGE>

2.      Section 3.5 of the Plan is amended  effective  June 1, 2002 by inserting
        the following at the end thereof as subsection (j):

        (j)     Pristine  Hydrochemical  - All Past Service  accumulated  before
                June 1, 2002 shall not be taken into account in determining  the
                amount of Credited Service.

Section 7. Claims Procedures
           -----------------

Sections 13.1 through 13.3 of the Plan are deleted effective January 1, 2002 and
the following is inserted in Section  13.1.  Section 13.4 shall be renumbered as
Section 13.2.

Timing of Notification of Benefit Determination

A claim for benefits shall be made in writing to the Administrator or Committee,
as applicable.

The Administrator  (or Committee,  if appointed) shall notify the claimant of an
adverse benefit  determination within a reasonable period of time, but not later
than 90 days after receipt of the claim by the Plan,  unless it determines  that
special  circumstances require an extension of time for processing the claim. If
the Administrator (or Committee,  if applicable) determines that an extension of
time for  processing  is  required,  written  notice of the  extension  shall be
furnished to the claimant  within the initial 90-day  period.  In no event shall
such extension  exceed a period of 90 days from the end of such initial  period.
The  extension  notice  shall  indicate the special  circumstances  requiring an
extension  of time and the date by which the Plan  expects to render the benefit
determination.

Manner and Content of Benefit Determinations

The  Administrator  (or Committee,  if applicable) shall provide a claimant with
written or electronic  notification  of any adverse benefit  determination.  Any
electronic  notification  shall  comply  with the  standards  imposed  by 29 CFR
2520-104b-1(c)(1)(i),  (iii) and (iv). The  notification  shall set forth,  in a
manner calculated to be understood by the claimant:

(i)     The specific reason or reasons for the adverse determination.

(ii)    Reference to the specific Plan provisions on which the  determination is
        based.

(iii)   A description  of any additional  material or information  necessary for
        the  claimant  to  perfect  the  claim  and an  explanation  of why such
        material or information is necessary.



                                      -6-
<PAGE>

(iv)    A  description  of the  Plan's  review  procedures  and the time  limits
        applicable to such  procedures,  including a statement of the claimant's
        right to bring a civil action under section  502(a) of the Act following
        an adverse benefit determination on review.

Appeal of Adverse Benefit Determination

In order to provide a claimant with the  opportunity  for a full and fair review
of a claim and adverse benefit determination:

(i)     A claimant has at least 60 days following  receipt of a notification  of
        an   adverse   benefit   determination   within   which  to  appeal  the
        determination.

(ii)    A claimant may submit  written  comments,  documents,  records and other
        information relating to the claim for benefits

(iii)   A  claimant  shall  be  provided,  upon  request  and  free  of  charge,
        reasonable  access to, and copies of, all  documents,  records and other
        information  relevant to the claimant's claim for benefits.  A document,
        record  or  other  information  shall  be  considered  "relevant"  to  a
        claimant's claim if such document, record or other information:

        (A)     was relied upon in making the benefit determination;

        (B)     was  submitted,  considered or generated in the course of making
                the  benefit  determination,  without  regard  to  whether  such
                document  or  record  was  relied  upon in  making  the  benefit
                determination; or

        (C)     demonstrates  compliance with the  administrative  processes and
                safeguards  required by the Department of Labor's regulations in
                making the benefit determination.

(iv)    The review will take into account all comments,  documents,  records and
        other  information  submitted  by the  claimant  relating  to the claim,
        without regard to whether such  information  was submitted or considered
        in the initial benefit determination.

Timing of Notification of Benefit Determination on Review

The Administrator  (or Committee,  as applicable) shall notify a claimant of the
Plan's benefit  determination on review within a reasonable  period of time, but
not later than 60 days after receipt of the claimant's request for review by the
Plan, unless it determines that special  circumstances (such as the need to hold
a  hearing)  require  an  extension  of time for  processing  the  claim.  If an
extension of time for  processing is required,  written  notice of the extension
shall be  furnished  to the  claimant  prior to the  termination  of the initial


                                      -7-
<PAGE>

60-day period.  In no event shall such extension exceed a period of 60 days from
the end of the initial period.  The extension  notice shall indicate the special
circumstances  requiring  an  extension  of time and the date by which  the Plan
expects to render the determination on review.

When the Committee is making the  determination on review, if it holds regularly
scheduled meetings at least quarterly,  the paragraph above shall not apply, and
the Committee shall instead make a benefit  determination no later than the date
of the meeting of the Committee that immediately follows the Plan's receipt of a
request  for  review,  unless the  request  for  review is filed  within 30 days
preceding the date of such meeting. In such case, a benefit determination may be
made by no later  than the  date of the  second  meeting  following  the  Plan's
receipt of the request for review.  If special  circumstances  require a further
extension of time for processing,  a benefit determination shall be rendered not
later than the third  meeting of the Committee  following the Plan's  receipt of
the  request  for review.  If such an  extension  of time for review is required
because of special circumstances,  the Committee shall provide the claimant with
written notice of the extension,  describing the special  circumstances  and the
date  as of  which  the  benefit  determination  will  be  made,  prior  to  the
commencement  of the extension.  The Committee  shall notify the claimant of the
benefit  determination as soon as possible,  but not later than 5 days after the
benefit determination is made.

The period of time within which a benefit determination on review is required to
be made shall begin at the time an appeal is filed in  accordance  with the Plan
procedures,  without regard to whether all the  information  necessary to make a
benefit  determination  on review  accompanies  the filing.  In the event that a
period of time is extended  due to a  claimant's  failure to submit  information
necessary to decide a claim, the period for making the benefit  determination on
review shall be tolled from the date on which the  notification of the extension
is sent to the  claimant  until the date on which the  claimant  responds to the
request for additional information.

Manner and Content of Notification of Benefit Determination on Review

The  Administrator  (or Committee as  applicable)  shall provide a claimant with
written or electronic  notification of a plan's benefit determination on review.
Any electronic  notification  shall comply with the standards  imposed by 29 CFR
2520.104b-1(c)(1)(i)  ,  (iii),  and  (iv).  In the case of an  adverse  benefit
determination,  the notification  shall set forth, in a manner  calculated to be
understood by the claimant:

(i)     The specific reason or reasons for the adverse determination.

(ii)    Reference  to  the  specific  Plan   provisions  on  which  the  benefit
        determination is based.




                                      -8-
<PAGE>

(iii)   A statement  that the claimant is entitled to receive,  upon request and
        free of charge,  reasonable  access  to,  and copies of, all  documents,
        records,  and other  information  relevant to the  claimant's  claim for
        benefits.

(iv)    A statement  describing any voluntary appeal  procedures  offered by the
        Plan and the  claimant's  right to obtain  the  information  about  such
        procedures  described in paragraph  (c)(3)(iv)  of this  section,  and a
        statement  of the  claimant's  right to bring an  action  under  section
        502(a) of ERISA.

In the case of an adverse benefit determination on review, the Administrator (or
Committee,  as  applicable)  shall  provide  such  access  to,  and  copies  of,
documents, records, and other information described above, as appropriate.

Failure to Follow Claims Procedures

In the case of the  failure  of the Plan to follow the  claims  procedures,  the
claimant shall be deemed to have exhausted the administrative remedies under the
Plan and shall be entitled to pursue any available remedies under section 502(a)
of ERISA.

Section 8.  Required Minimum Distributions
            ------------------------------

Section 8.8(f) is added to the Plan as follows:

        (f)     Minimum Distribution Rules Effective January 1, 2003.

                (i)     Effective  Date.  The  provisions of this Section 8.8(f)
                        will apply for purposes of determining  required minimum
                        distributions for calendar years beginning with the 2003
                        calendar year.

                        (1)     Precedence.  The  requirements  of this  article
                                will  take  precedence  over  any   inconsistent
                                provisions of the plan.

                        (2)     Requirements     of     Treasury     Regulations
                                Incorporated.  All distributions  required under
                                this  article  will be  determined  and  made in
                                accordance with the Treasury  regulations  under
                                section 401(a)(9) of the Internal Revenue Code.

                        (3)     TEFRA     Section      242(b)(2)      Elections.
                                Notwithstanding  the  other  provisions  of this
                                article,  other than  section  (f)(i)(2)  above,
                                distributions  may be made  under a  designation
                                made before January 1, 1984, in accordance  with
                                section  242(b)(2)  of the Tax Equity and Fiscal
                                Responsibility Act (TEFRA) and the provisions of
                                the plan that  relate to  section  242(b)(2)  of
                                TEFRA.



                                      -9-
<PAGE>

                (ii)    Timing and Manner of Distribution

                        (1)     Required   Beginning  Date.  The   participant's
                                entire interest will be distributed, or begin to
                                be distributed, to the participant no later than
                                the participant's required beginning date.

                        (2)     Death of Participant Before Distributions Begin.
                                If the  participant  dies  before  distributions
                                begin, the participant's entire interest will be
                                distributed,  or  begin  to be  distributed,  no
                                later than as follows:

                                (A)     If the participant's surviving spouse is
                                        the   participant's    sole   designated
                                        beneficiary, then, except as provided in
                                        the adoption agreement, distributions to
                                        the  surviving   spouse  will  begin  by
                                        December   31  of  the   calendar   year
                                        immediately  following the calendar year
                                        in which  the  participant  died,  or by
                                        December  31 of  the  calendar  year  in
                                        which   the   participant   would   have
                                        attained age 70 1/2, if later.

                                (B)     If the participant's surviving spouse is
                                        not the  participant's  sole  designated
                                        beneficiary, then, except as provided in
                                        the adoption agreement, distributions to
                                        the designated beneficiary will begin by
                                        December   31  of  the   calendar   year
                                        immediately  following the calendar year
                                        in which the participant died.

                                (C)     If there is no designated beneficiary as
                                        of  September  30 of the year  following
                                        the year of the participant's death, the
                                        participant's  entire  interest  will be
                                        distributed   by   December  31  of  the
                                        calendar  year   containing   the  fifth
                                        anniversary of the participant's death.

                                (D)     If the participant's surviving spouse is
                                        the   participant's    sole   designated
                                        beneficiary  and  the  surviving  spouse
                                        dies  after the  participant  but before
                                        distributions  to the  surviving  spouse
                                        begin,  this section  (f)(ii)(2),  other
                                        than section  (f)(ii)(2)(A),  will apply
                                        as if  the  surviving  spouse  were  the
                                        participant.

For purposes of this section  (f)(ii)(2) and section (f)(v),  distributions  are
considered to begin on the participant's required beginning date (or, if section
(f)(ii)(2)(D)  applies,  the date  distributions  are  required  to begin to the


                                      -10-
<PAGE>

surviving spouse under section  (f)(ii)(2)(A)).  If annuity payments irrevocably
commence to the participant before the participant's required beginning date (or
to the participant's surviving spouse before the date distributions are required
to  begin  to  the  surviving  spouse  under  section  (f)(ii)(2)(A),  the  date
distributions  are  considered  to  begin  is the  date  distributions  actually
commence.

                (3)     Form of Distribution.  Unless the participant's interest
                        is distributed in the form of an annuity  purchased from
                        an insurance company or in a single sum on or before the
                        required  beginning  date, as of the first  distribution
                        calendar year  distributions  will be made in accordance
                        with   subsections   f(iii),   (iv)  and  (v).   If  the
                        participant's  interest is distributed in the form of an
                        annuity    purchased   from   an   insurance    company,
                        distributions thereunder will be made in accordance with
                        the  requirements  of section  401(a)(9) of the Code and
                        the Treasury regulations.  Any part of the participant's
                        interest  which is in the form of an individual  account
                        described  in  section   414(k)  of  the  Code  will  be
                        distributed in a manner  satisfying the  requirements of
                        section   401(a)(9)   of  the  Code  and  the   Treasury
                        regulations that apply to individual accounts.

        (iii)   Determination of Amount to be Distributed Each Year.

                (1)     General  Annuity  Requirements.   If  the  participant's
                        interest  is paid in the form of  annuity  distributions
                        under the plan,  payments under the annuity will satisfy
                        the following requirements:

                        (A)     the  annuity   distributions  will  be  paid  in
                                periodic  payments  made at intervals not longer
                                than one year;

                        (B)     the distribution  period will be over a life (or
                                lives) or over a period  certain not longer than
                                the  period  described  in  section  (f)(iv)  or
                                (f)(v);

                        (C)     once payments have begun over a period  certain,
                                the period  certain  will not be changed even if
                                the period  certain is shorter  than the maximum
                                permitted;

                        (D)     payments   will  either  be   nonincreasing   or
                                increase only as follows:

                                (i)     by an annual  percentage  increase  that
                                        does not exceed  the  annual  percentage


                                      -11-
<PAGE>


                                        increase in a cost-of-living  index that
                                        is  based on  prices  of all  items  and
                                        issued   by   the    Bureau   of   Labor
                                        Statistics;

                                (ii)    to the  extent of the  reduction  in the
                                        amount of the participant's  payments to
                                        provide  for  a  survivor  benefit  upon
                                        death, but only if the beneficiary whose
                                        life was  being  used to  determine  the
                                        distribution    period    described   in
                                        subsection  (f)(iv) dies or is no longer
                                        the participant's  beneficiary  pursuant
                                        to a qualified  domestic relations order
                                        within the meaning of section 414(p);

                                (iii)   to  provide  cash  refunds  of  employee
                                        contributions   upon  the  participant's
                                        death; or

                                (iv)    to pay  increased  benefits  that result
                                        from a plan amendment.

                (2)     Amount Required to be Distributed by Required  Beginning
                        Date.  The amount that must be  distributed on or before
                        the  participant's  required  beginning date (or, if the
                        participant  dies before  distributions  begin, the date
                        distributions   are  required  to  begin  under  section
                        (f)(ii)(2)(A)  or (B)) is the  payment  that is required
                        for one payment interval. The second payment need not be
                        made until the end of the next payment  interval even if
                        that payment  interval ends in the next  calendar  year.
                        Payment intervals are the periods for which payments are
                        received, e.g., bi-monthly,  monthly,  semi-annually, or
                        annually.  All of the participant's  benefit accruals as
                        of the last day of the first distribution  calendar year
                        will be included in the calculation of the amount of the
                        annuity  payments  for  payment  intervals  ending on or
                        after the participant's required beginning date.

                (3)     Additional  Accruals After First  Distribution  Calendar
                        Year.   Any   additional   benefits   accruing   to  the
                        participant   in  a   calendar   year  after  the  first
                        distribution calendar year will be distributed beginning
                        with the first payment  interval  ending in the calendar
                        year  immediately  following  the calendar year in which
                        such amount accrues.

        (iv)    Requirements  For Annuity  Distributions  That  Commence  During
                Participant's Lifetime.


                                      -12-
<PAGE>

                (1)     Joint Life  Annuities  Where the  Beneficiary Is Not the
                        Participant's  Spouse. If the participant's  interest is
                        being  distributed  in the form of a joint and  survivor
                        annuity  for the joint  lives of the  participant  and a
                        nonspouse beneficiary, annuity payments to be made on or
                        after the participant's  required  beginning date to the
                        designated  beneficiary  after the  participant's  death
                        must not at any time exceed the applicable percentage of
                        the annuity payment for such period that would have been
                        payable to the participant  using the table set forth in
                        Q&A-2  of  section   1.401(a)(9)-6T   of  the   Treasury
                        regulations.  If the  form of  distribution  combines  a
                        joint and  survivor  annuity  for the joint lives of the
                        participant  and a  nonspouse  beneficiary  and a period
                        certain  annuity,   the  requirement  in  the  preceding
                        sentence  will apply to annuity  payments  to be made to
                        the designated  beneficiary  after the expiration of the
                        period certain.

                (2)     Period  Certain  Annuities.   Unless  the  participant's
                        spouse is the sole  designated  beneficiary and the form
                        of distribution is a period certain and no life annuity,
                        the  period   certain   for  an   annuity   distribution
                        commencing  during the  participant's  lifetime  may not
                        exceed  the  applicable   distribution  period  for  the
                        participant  under the Uniform  Lifetime Table set forth
                        in section 1.401(a)(9)-9 of the Treasury regulations for
                        the calendar  year that  contains  the annuity  starting
                        date. If the annuity  starting date precedes the year in
                        which the  participant  reaches  age 70, the  applicable
                        distribution   period   for  the   participant   is  the
                        distribution   period  for  age  70  under  the  Uniform
                        Lifetime Table set forth in section 1.401(a)(9)-9 of the
                        Treasury  regulations plus the excess of 70 over the age
                        of the participant as of the  participant's  birthday in
                        the year that contains the annuity starting date. If the
                        participant's   spouse   is   the   participant's   sole
                        designated beneficiary and the form of distribution is a
                        period  certain and no life annuity,  the period certain
                        may  not  exceed   the   longer  of  the   participant's
                        applicable distribution period, as determined under this
                        section (f)(iv)(2),  or the joint life and last survivor
                        expectancy  of the  participant  and  the  participant's
                        spouse as  determined  under the Joint and Last Survivor
                        Table set forth in section 1.401(a)(9)-9 of the Treasury
                        regulations,   using  the   participant's  and  spouse's
                        attained  ages  as of  the  participant's  and  spouse's
                        birthdays in the calendar year that contains the annuity
                        starting date.


                                      -13-
<PAGE>


        (v)     Requirements For Minimum  Distributions  Where  Participant Dies
                Before Date Distributions Begin.

                (1)     Participant Survived by Designated  Beneficiary.  Except
                        as  provided   in  the   adoption   agreement,   if  the
                        participant dies before the date  distribution of his or
                        her   interest   begins   and  there  is  a   designated
                        beneficiary,  the participant's  entire interest will be
                        distributed,  beginning no later than the time described
                        in section  (f)(ii)(2)(A)  or (B),  over the life of the
                        designated  beneficiary  or over a  period  certain  not
                        exceeding:

                        (A)     unless the annuity  starting  date is before the
                                first  distribution   calendar  year,  the  life
                                expectancy   of   the   designated   beneficiary
                                determined using the beneficiary's age as of the
                                beneficiary's  birthday  in  the  calendar  year
                                immediately  following  the calendar year of the
                                participant's death; or

                        (B)     if the annuity starting date is before the first
                                distribution  calendar year, the life expectancy
                                of the designated  beneficiary  determined using
                                the  beneficiary's  age as of the  beneficiary's
                                birthday in the calendar  year that contains the
                                annuity starting date.

                (2)     No  Designated  Beneficiary.  If  the  participant  dies
                        before  the date  distributions  begin  and  there is no
                        designated  beneficiary  as of  September 30 of the year
                        following   the   year  of  the   participant's   death,
                        distribution of the  participant's  entire interest will
                        be  completed  by  December  31  of  the  calendar  year
                        containing the fifth  anniversary  of the  participant's
                        death.

                (3)     Death  of  Surviving  Spouse  Before   Distributions  to
                        Surviving  Spouse Begin. If the participant  dies before
                        the date distribution of his or her interest begins, the
                        participant's surviving spouse is the participant's sole
                        designated  beneficiary,  and the surviving  spouse dies
                        before distributions to the surviving spouse begin, this
                        section  (f)(v)  will apply as if the  surviving  spouse
                        were  the  participant,  except  that  the time by which
                        distributions  must  begin  will be  determined  without
                        regard to section (f)(ii)(2)(A).


                                      -14-
<PAGE>


        (vi)    Definitions.

                (1)     Designated beneficiary. The individual who is designated
                        as the beneficiary under section 15.1 of the plan and is
                        the designated  beneficiary  under section  401(a)(9) of
                        the  Internal  Revenue  Code and section  1.401(a)(9)-1,
                        Q&A-4, of the Treasury regulations.

                (2)     Distribution  calendar year. A calendar year for which a
                        minimum  distribution  is  required.  For  distributions
                        beginning  before  the  participant's  death,  the first
                        distribution   calendar   year  is  the  calendar   year
                        immediately  preceding the calendar year which  contains
                        the   participant's   required   beginning   date.   For
                        distributions  beginning after the participant's  death,
                        the first  distribution  calendar  year is the  calendar
                        year  in  which  distributions  are  required  to  begin
                        pursuant to section (f)(ii)(2).

                (3)     Life  expectancy.  Life expectancy as computed by use of
                        the Single  Life Table in section  1.401(a)(9)-9  of the
                        Treasury regulations.

                (4)     Required  beginning  date. The date specified in section
                        8.3 of the plan.

Section 9. Mortality Tables
           ----------------

1.      Effective date. This section shall apply to  distributions  with annuity
        starting dates on or after December 31, 2002.

2.      Notwithstanding   any  other  plan  provisions  to  the  contrary,   the
        applicable mortality table used for purposes of adjusting any benefit or
        limitation under 415(b)(2)(B),  (C), or (D) of the Internal Revenue Code
        as set  forth in  Appendix  A of the plan and the  applicable  mortality
        table used for purposes of satisfying the  requirements of 417(e) of the
        Internal  Revenue  Code as set  forth in  Appendix  A of the plan is the
        table prescribed in Rev. Rul. 2001-62.





                                      -15-
<PAGE>


        IN ALL OTHER RESPECTS,  this Plan is continued in full force and effect.
In order to maintain the terms of the Plan in a single document,  this Amendment
may be incorporated into the most recent restatement of the Plan.

        IN WITNESS  WHEREOF,  the Company has caused this First  Amendment to be
executed by its duly authorized officer this 15th day of August, 2002.



ATTEST:                                    Met Pro Corporation

By  /s/ Gary J. Morgan                     By     /s/ William L. Kacin
    -----------------------------                -------------------------------

Title:  V/P Finance                        Title:    Pesident and CEO
        -------------------------                   ----------------------------























                                      -16-