Exhibit 10(l)



                                 AMENDMENT NO. 2
                                     TO THE
                         MET-PRO CORPORATION DIRECTORS'
                                 RETIREMENT PLAN

     This Amendment to the Met-Pro Corporation  Directors'  Retirement Plan (the
"Plan") is made and effective this 17th day of August, 2000.

     WHEREAS,  Met-Pro  Corporation (the "Company")  previously adopted the Plan
and now wishes to further amend the Plan to modify the definition of a change in
control.

     NOW, THEREFORE, the Plan is hereby amended in the following manner:

     1. Section 6 is amended by adding a new subsection (d) as follows:

          (d) At any time that the Corporation's Board of Directors, in its sole
     discretion determines that a change in control has occurred,  regardless of
     whether such determination relates to any of the aforementioned event.

     IN WITNESS  WHEREOF,  the  Company  has caused its  authorized  officers to
execute this Amendment on behalf of the Company.

    WITNESS                                  MET-PRO CORPORATION

/s/ William L. Kacin                         By: /s/ Gary J. Morgan
----------------------------                     -------------------------------
William L. Kacin                                 Gary J. Morgan
                                                 Vice President - Finance