January  7, 2000
        Immediate
        William L. Kacin, Chairman/CEO/President


                         Met-Pro Corporation Announces
                      Adoption of Shareholder Rights Plan

Harleysville,  PA,  January  7,  2000 - William  L.  Kacin,  Chairman  and Chief
Executive Officer of Met-Pro Corporation, announced today that at its meeting on
January 6, 2000,  its Board of Directors  adopted a Shareholder  Rights Plan. To
effect the Plan,  the Board  declared a dividend  of one Common  Stock  purchase
right on each  outstanding  share of the Company's  Common  Stock.  The Plan was
adopted  to  ensure  that the  Company's  stockholders  receive  fair and  equal
treatment  in the event of any proposed  takeover of the  Company,  and to guard
against partial tender offers, squeeze-outs,  open market accumulation and other
tactics  intended to gain control of the Company without paying all stockholders
a fair price.

"This  action was taken  after  careful  study,"  said  William L.  Kacin.  "The
inclusion of a share  purchase  rights plan has become common  practice in major
American companies and a well-accepted  approach to ensure that all stockholders
receive a fair price and are treated equally in the event of a takeover."  Kacin
further  stated,  "The  adoption  of a new rights plan is not in response to any
pending takeover or proposed change in control of the Company."

Mr. Kacin added,  "The rights are intended to enable all stockholders to realize
the long-term value of their investment in the Company.  They will not prevent a
takeover,  but  should  encourage  anyone  seeking  to  acquire  the  Company to
negotiate with the Board prior to attempting a takeover."

The  rights  will  trade  together  with  the  common  stock  and  will  not  be
exercisable, initially. The rights generally will become exercisable if a person
or group  acquires  15 percent or more of the  outstanding  shares of  Met-Pro's
Common Stock. Once the rights are exercisable, the stockholders,  other than the
acquiring  person or group,  may  purchase  Common  Stock at a  discount.  Under
certain circumstances, the rights will entitle the stockholders to buy shares in
an acquiring entity at a discount.

The Plan also includes an exchange option.  After the rights become exercisable,
the Board of Directors  has an option to exchange  part or all of the rights for
shares of Met-Pro Common Stock. Under this option, Met-Pro would issue one share
of Common Stock for each right, subject to adjustment in certain  circumstances.
This exchange would not apply to shares held by the person or group whose action
triggers the exercisability.


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                                                      Met-Pro Corporation Page 2

The record date for the rights  dividend is January  14,  2000.  The rights will
expire  January  14,  2010  unless  earlier  redeemed,  exchanged  or amended by
Met-Pro's Board of Directors. Met-Pro's Board of Directors may redeem all rights
for  $0.0001  per  right,  generally  at  any  time  before  the  rights  become
exercisable.

Issuance of the Rights does not in any way weaken the financial  strength of the
Company or interfere with its business plans.  The issuance of the Rights has no
dilutive effect,  will not affect reported earnings per share, is not taxable to
the Company or to  stockholders  under current  federal income tax law, and will
not change the way in which the Company's  shares of Common Stock may be traded.
If the  Rights  should  become  exercisable,  stockholders,  depending  on  then
existing circumstances, may recognize taxable income.

Met-Pro  Corporation,  with  headquarters  at 160  Cassell  Road,  Harleysville,
Pennsylvania, is a manufacturer of air and water pollution control systems; fume
scrubbers and odor control  equipment;  fluid handling  equipment for corrosive,
abrasive and high  temperature  liquids;  filter  products  for drinking  water,
industrial and custom  applications;  wet and dry particulate  dust  collectors;
specialty chemicals for controlling corrosion and reducing lead/copper in public
drinking  water;  and  state-of-the-art  fans  for  laboratory  and  clean  room
applications.

Met-Pro stock is traded on the New York Stock Exchange, Symbol MPR.


The Private  Securities  Litigation  Reform Act of 1995 provides a "safe harbor"
for  forward-looking  statements.  Certain  information  included  in this press
release  and  other  materials  filed or to be filed  with  the  Securities  and
Exchange  Commission (as well as  information  included in oral or other written
statements  made or to be made by the  Company)  contains  statements  that  are
forward-looking.  Such  statements  may  relate to plans for  future  expansion,
business development  activities,  capital spending,  financing,  the effects of
regulation and  competition,  or  anticipated  sales or earnings  results.  Such
information  involves risks and uncertainties  that could  significantly  affect
results in the future  and,  accordingly,  such  results  may differ  from those
expressed in any forward-looking statements made by or on behalf of the Company.
These risks and uncertainties include, but are not limited to, those relating to
product development activities,  computer systems implementation,  dependence on
existing  management,  global  economic  and market  conditions,  and changes in
federal or state laws.


To obtain an Annual Report or additional information on the Company, please call
215-723-6751  and ask for our Investor  Relations  Department,  or visit our Web
site at www.met-pro.com.

Contact:        William L. Kacin, Chairman/CEO/President
                215-723-6751
                Fax: 215-723-6758