Donaldson Process Sterile Air Filter Elements Ensure Safe and Sterile Filtration of Process Gases


Low pressure drop and long service life reduce operating costs

MINNEAPOLIS, MN - August 12, 2009 - Donaldson Company (NYSE:DCI), a leading, worldwide manufacturer of compressed air purification equipment and process filters, offers the Donaldson Process Sterile Air Filter Elements (P-SRF N), a pleated depth sterile air filter element used for sterile filtration of compressed air, process air, technical gases and vent applications. With a retention rate of >99.99998 percent related to 0.2 µ and >99.999998 percent related to 0.02 µ, the P-SRF N filter element ensures safe and sterile filtration of process gases.

Donaldson P-SRF N pleated depth sterile air filter elements are available in 13 sizes with different connection options that meet virtually all air purification application requirements. Manufactured with high-quality stainless steel construction, these filter elements ensure excellent mechanical stability, thermal resistance up to 329°F, more than 150 sterilization cycles possible at specific conditions, and is suited for Vapor Phase Hydrogen Peroxide (VPHP) sterilization. Other benefits include:

o All components meet FDA requirements for contact with food in accordance with the Code of Federal Regulation (CFR), title 21;
o Large void volume of 95 percent, is chemically inert and developed specifically for the removal of contaminating bacteria and viruses;
o High flow rates, an extremely low pressure drop and excellent dewetting characteristics;
o Validated retention of bacteria and viruses provides high safety for aseptic applications in all industries; and
o Manufactured according to DIN EN ISO 9001.

Designed to meet the demands of a variety of industries - food and beverage, pharmaceutical, health care and biotech, aseptic packaging, chemical, dairy, and breweries - the Donaldson P-SRF N sterile air filter element is used to remove live bacteria and other microorganisms in the following process filtration applications:

o Compressed Air;
o Carbon Dioxide;
o Fermentation Air;
o Tank Ventilation, and
o Technical Gases.

View the Donaldson P-SRF N filter element brochure at www.donaldson.com/en/process/literature/064621.pdf.

For over 35 years, Donaldson Compressed Air and Process Filtration product designs have focused on energy-efficient operation and reliable performance to minimize operating expenses and reduce downtime. Donaldson provides industrial air, sterile air, culinary steam, and liquid filtration products from prefiltration to final, and from high to low capacity, so when purity counts, count on Donaldson. For more information on Donaldson Compressed Air and Process Filtration products, visit www.donaldson.com or call 800-543-3634.

About Donaldson Company

Donaldson is a leading worldwide provider of filtration systems 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 filtration solutions through innovative research and development, application expertise, and global presence. Our employees contribute to the Company's success by supporting our Customers at our 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 information is available at www.donaldson.com.

FOR MORE INFORMATION:
Julie Otremba
Donaldson Company, Inc.
Tel. (952) 887-3830
E-mail: julie.otremba@donaldson.com

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