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Donaldson Company, Inc. is a vertically integrated filtration company engaged in the production and marketing of air filters used in a variety of industry sectors, including commercial/industrial (engines, exhausts, transmissions, vents in private vehicles, hydraulics), aerospace (helicopters, planes), chemical, alternative energy (windmills) and pharmaceuticals.
IQAir is a Swiss air quality technology company, specializing in protection against airborne pollutants, developing air quality monitoring and air cleaning products. [2] IQAir also operates AirVisual, a real-time air quality information platform. [3][4] As of February 2020, it had around 500 employees worldwide, 150 of them in China, and its ...
Clean air delivery rate. The AHAM-certified seal lists a rating for tobacco smoke, pollen, and dust removal, and a rating for room size. The clean air delivery rate (CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing ...
A modern Purolator oil filter. The company was founded in 1923 as Motor Improvements, Incorporated in New York City. [1] The company's Purolator (initially stylized PurOlator and sometimes Pur-O-Lator) oil filtration device, [2] invented in 1922 by Ernest John Sweetland [3] and George H. Greenhalgh, [1] was standard equipment on early 1920s Chrysler automobiles after being launched on the ...
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A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone. [1]
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