Re Agreement

Porvair PLC
10 March 2005


FOR IMMEDIATE RELEASE   10 March 2005

                    Porvair signs long term supply agreement

Porvair plc today announces that it has signed a long term supply agreement with
Alcoa Inc, the world's leading producer and manager of primary aluminium. Under
the terms of the Agreement, Porvair's subsidiary Selee Corporation will supply
the majority of the global molten metal filter requirements for both Alcoa Inc,
already Selee Corporation's largest customer, and its subsidiary Howmet Inc for
a period of 5 years.

Commenting on the agreement, Ben Stocks, Chief Executive of Porvair plc, said:

'We are delighted to have again been chosen as a key supplier to Alcoa Inc. This
Agreement is important for Porvair as it cements the Group's relationship with
Alcoa and allows us to expand the range of products and services we bring to
Alcoa around the world. It represents a gain in market share for Selee
Corporation and reinforces Selee's position as market leader in the field of
aluminium filtration.'

Porvair plc
Ben Stocks, Chief Executive                                    01553 765 500
Chris Tyler, Group Finance Director                            01553 765 500

Buchanan Communications                                        0207 466 5000
Charles Ryland / Ben Willey

Notes:

Porvair plc is a specialist filtration and advanced materials business with
expertise in a wide range of markets including the filtration of molten metals.
It invented ceramic foam filtration and is the market leader in the filtration
of molten aluminium. Porvair is listed on the London Stock Exchange. More
information can be found at www.porvair.com

Alcoa is the world's leading producer and manager of primary aluminium,
fabricated aluminium and alumina facilities, and is active in all major aspects
of the industry. Alcoa serves the aerospace, automotive, packaging, building and
construction, commercial transportation and industrial markets, bringing design,
engineering, production and other capabilities of Alcoa's businesses to
customers. The company has 131,000 employees in 43 countries and has been a
member of the Dow Jones Industrial Average for 45 years and the Dow Jones
Sustainability Indexes since 2001. More information can be found at
www.alcoa.com.


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