Taking Clean to the EXTREME 1

Donaldson Membranes will launch their new Tetratex® membrane, EXTREME, at Powtech 2008, Nuremburg Messe, Germany on 30th September to 2nd October 2008.

The new Tetratex EXTREME membrane joins Donaldson’s successful membrane portfolio. Available in a range of substrates, polyester, polyester stainless steel, polyester epitropic and aramid needlefelts and pleatable polyester for cartridge type elements.

Market Manager, Callum Baxendale, says of this new membrane: “EXTREME slots perfectly into the Tetratex product range, bringing increased airflow capabilities with reduced cleaning frequencies translating to reduced down time, extended bag life and higher profits.”

During the exhibition, guests to the stand, Hall 8 Stand 636 will be able to see the benefits of this new membrane with a bubble display, showing the media in action. The display will demonstrate the greater airflow capability.

Also on show will be a range of venting products. Donaldson is able to tailor their membranes to any required size for venting applications. Working in close partnership with customers, Donaldson provide the most effective solution for your needs, to give protection against harmful contaminants, water and oils.

Take the Donaldson ‘memBrain’ challenge

Construct the 700mm tall Tetratex tetrahedron in the quickest time to be crowned top of the leader board and win some fantastic prizes.

The team would also like to invite you to a cocktail reception on Tuesday 30th September from 6pm. So, why not join in the fun on the Donaldson stand at this year’s Powtech exhibition, we look forward to seeing you there.

For further information contact

Donaldson Membranes
7 The Parks
Newton Le Willows
WA12 0JQ
England
Tel: +44 (0) 1942 710242
Fax: +44 (0) 1942 711571

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

Website: www.donaldson.com and click on Filter Media

Note to Editors

About Donaldson Membranes

Donaldson Membranes is the manufacturer of Tetratex® expanded polytetrafluoroethylene (PTFE) membranes. These high performance laminates offer superior dust cake release, low pressure drop, high air flow, and high particulate collection efficiency, making Tetratex 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; chemicals; metallurgical; energy; minerals and more.

For customers requiring a high performance membrane to solve a problem, Donaldson Membranes has the answer: Tetratex.

About Donaldson Company, Inc.

Donaldson is a leading worldwide provider of air and liquid filtration systems and replacement parts that improve people's lives, enhance our Customers’ equipment performance and protect our environment. We are a technology-driven company committed to satisfying our Customers’ needs for diesel engine equipment and industrial filtration solutions through innovative research and development, superior technology, and global presence. Our almost 13,000 employees contribute to the company’s success by supporting our Customers at more than 100 sales, manufacturing, and distribution locations around the world.

Donaldson is a member of the S&P MidCap 400 and Russell 1000 indices, and our shares trade on the NYSE under the symbol DCI. Additional company information is available at www.donaldson.com

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

The company desires to take advantage of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 (the “Act”) and is making this cautionary statement in connection with such safe harbor legislation. This announcement contains forward-looking statements, including forecasts, plans, and projections relating to our business and financial performance, which involve uncertainties that could materially impact results.

The company wishes to caution investors that any forward-looking statements are subject to uncertainties and other risk factors that could cause actual results to differ materially from such statements, including but not limited to risks associated with: currency fluctuations, commodity prices, world economic factors, political factors, the company’s international operations, highly competitive markets, governmental laws and regulations, the implementation of our new warehouse management system in our U.S. distribution center, and other factors included in our Annual and Quarterly Reports. We undertake no obligation to publicly update or revise any forward-looking statements.