Director/PDMR Shareholding

Porvair PLC
02 October 2007


                          Porvair plc (the 'Company')

                            Directors Shareholdings

The Company was notified on 1 October 2007 that Andrew Walker, a member of the
Board, has used the Company's dividend reinvestment plan to reinvest his
dividend paid on 14 September 2007 in additional ordinary shares of 2p each in
the Company. Details of his holding are given below:


Director       No. of Ordinary    Purchase price    Resultant    % of the issued
                        Shares      per Ordinary   beneficial      share capital
                     purchased             Share     interest
Andrew Walker               29              127p        4,040               0.01


Contact:

Porvair plc                                                        01553 765 500
Chris Tyler, Group Finance Director                                

Altium                                                             020 7484 4040
Nick Tulloch


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