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07 December, 2005

FOR IMMEDIATE RELEASE:                           

FOR FURTHER INFORMATION:                             
Rich Sheffer    (952) 887-3753

MINNEAPOLIS, (December 7, 2005) – An independent research study conducted by Nelson Laboratories reported that a Donaldson Company, Inc. HEPA filter media achieved a viral removal efficiency greater than 99.99909% and a bacterial removal efficiency greater than 99.99996%. 

Beyond the protection offered by a standard HEPA filter, Donaldson also offers an enhanced microbial barrier in its BIOAdvantage™ Antimicrobial HEPA Filtration Technology. The BIOAdvantage Antimicrobial HEPA filter media was also tested by the experts at Nelson Laboratories and achieved a viral removal efficiency greater than 99.9996% and a bacterial removal efficiency greater than 99.99996%. 

"Today, when it comes to aircraft cabin filtration, every reduction in viral and bacterial contamination counts," said Sheila Peyraud, General Manager Aerospace and Defense at Donaldson Company. "Our BIOAdvantage filters combine the qualities of HEPA filtration with the active MICROBAN® antimicrobial technology to create an enhanced particulate barrier. You get both continuous antimicrobial product protection and high efficiency particulate filtration in one filter."

The BIOAdvantage product line is designed specifically for the airline industry and BIOAdvantage filters are completely interchangeable with current commercial aircraft air recirculation filters. For more information on Donaldson BIOAdvantage HEPA filters go to

About Donaldson Company, Inc.

Donaldson 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 markets 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.  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

MICROBAN is a registered trademarks of Microban Products Company, Huntersville, NC.

More information about Nelson Laboratories, Salt Lake City, UT, can be found at

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