Porvair Regulatory News (PRV)

For immediate release 24 May 2012

Porvair plc

("Porvair" or "The Group")

Trading Update

Porvair, the specialist filtration and environmental technologies group, today issues a trading update ahead of the publication of its interim results for the six months ended 31 May 2012 on 26 June 2012.

The Group has started 2012 well and expects to report interim profits well ahead of 2011. Microfiltration and Metals Filtration have both grown strongly and Group revenue is expected to be over 10% above the first six months of 2011 at constant currency rates. Order books and the pipeline of potential projects are encouraging in Microfiltration and market share gains have been made in Metals Filtration.

Operating cash generation has continued to be healthy. During the first half of 2012, The Group has invested £3.4m in the acquisitions of Pulse Instrumentation, Pell Industries and the Block Digester business of Aim Laboratories. These have all been successfully integrated into the Group's existing operations and are trading well.

An analyst briefing will be held at 9.30 am at Buchanan Communications, 107 Cheapside, London, EC2V 6DN on Tuesday 26 June 2012.

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Notes to Editors

Porvair is a group of specialist filtration and environmental technology businesses. Its businesses design and manufacture a range of bespoke consumable filtration products that are used in a range of niche filtration markets. Its principal markets are aviation, energy and industrial process, environmental laboratories and non-ferrous metals.