Donaldson Membranes to filter out the competition with market leading Tetratex r Media

at Powtech 2007, Nürnberg, Germany, 27th-29th March

Donaldson Membranes' world-leading portfolio of Tetratex ePTFE filtration media will be on show at Powtech 2007, Hall 7, Stand 648.

Representatives from the mechanical process industry can take the opportunity to see how Tetratex(r) & ePTFE membranes can be tailored to meet the demands of difficult and critical applications in a wide cross-section of industrial markets and commercial product markets.

Visitors are also invited to a special cocktail reception at the Donaldson Membranes stand on Wednesday 28th March at 6pm.

Tetratex membranes for Industrial Products are ideal for a wide range of applications, including: cement, plastics, pharmaceutical, non-metallic, metallurgical and fine chemicals.

Tetratex expanded polytetrafluorethylene (ePTFE) membranes are manufactured

from 100% PTFE Polymer resin. They are chemically inert and thermally stable up to 287oC, and exhibit on average more than 100 million pores per cm2.

Tetratex is a surface filtration membrane, acting as a primary dust cake, requiring no dust cake to act as a filter aid, either before or during operation. It helps retain the substrate integrity by inhibiting dust particle penetration and restricting surface cake formation, maintaining optimum airflow and stable pressure drop.

Tetratex membrane filter media vastly improves the performance of

traditional filter fabrics which rely on the formation of a surface filter cake to capture fine dust particles, which can permit the migration of dust through the media leading to high emission values and raised pressure drop.

With emissions of pollutants into the environment and the workplace subject to ever more stringent legislative control, dust and fumes, toxic or not, must be removed from exhaust gases. In addition, the solid particulate carried in the gas or liquid flow often represents a useful or valuable product, which must be efficiently separated or filtered for final use or further processing.

The best control technology available to achieve these aims through the capture of fine particulate is recognised as fabric filter media utilising ePTFE membranes. The four efficiency levels of Tetratex(r) ePTFE membranes are: Tetratex Release; Tetratex; Tetratex High Efficiency Membrane; and Tetratex Ultra High Efficiency Membrane. Tetratex membranes deliver the highest particulate capture rates, unrivalled dust cake release, extended filter bag life and energy savings. Find out why they are an essential part of the industrial process industry at Hall 7, Stand 648...and don't forget to join us for cocktails on the

28th!

For further information contact

Donaldson Membranes

7 The Parks

Newton Le Willows

WA12 0JQ

England

Tel: +44 (0) 1942 710 242

Fax: +44 (0) 1942 711571

E-mail: membranes-europe@mail.donaldson.com

Website: www.donaldson.com and click on Membranes

About Donaldson Membranes

Donaldson Membranes is a leading worldwide brand name and are the

manufacturer of Tetratex(r) expanded polytetrafluoroethylene (PTFE) membrane. High performance laminates offer superior dust cake release, low pressure drop, higher air flow, and high efficiency, making Tetratex(r) an excellent choice for filtration and other applications. For over 20 years Donaldson Membranes has been solving challenging problems in a variety of markets including: industrial filtration; pharmaceutical;

microfiltration; fuel cell, medical; fine chemicals; food and plastics, and more. For customers requiring a high performance membrane to solve a problem, Donaldson Membranes has the answer: Tetratex(r).

About Donaldson Company, Inc.

Donaldson Company, Inc., headquartered in Minneapolis, Minn., is a leading worldwide provider of filtration systems and replacement parts. Donaldson is a technology-driven company committed to satisfying customer needs for filtration solutions through innovative research and development. Donaldson serves customers in the diesel engine and industrial including in-plant air cleaning, compressed air and gas purification, power generation, disk drive filtration, off-road equipment and trucks. Our 11,000 employees contribute to the company's success at over 30 manufacturing locations around the world. In fiscal year 2005, Donaldson reported sales of more than $1.6 billion and grew earnings for the 16th consecutive year. Donaldson is a member of the S&P MidCap 400 Index and Donaldson shares are traded on the NYSE under the symbol DCI. Additional company information is available at

www.donaldson.com