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Donaldson Company, Inc. is a 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.
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 ]
In 1999, CLARCOR bought the companies Purolator Products Air Filtration Company, Facet International, and Purolator-Facet Filter Products from Mark IV for USD $144.8 million. All three companies were former subsidiaries of Purolator Products and were related to the manufacture and sale of industrial filtration equipment. [3]
To lengthen the life of filter bags, a thin layer of PTFE (teflon) membrane may be adhered to the filtering side of the fabric, keeping dust particles from becoming embedded in the filter media fibers. Some baghouses use pleated cartridge filters, [13] similar to what is found in home air filtration systems. This allows much greater surface ...
These business groups provide fluid management products and systems to customers in biotechnology, pharmaceutical, transfusion medicine, energy, electronics, municipal and industrial water purification, aerospace, transportation and broad industrial markets. The company was founded by David B. Pall in 1946 as Micro Metallic Corporation. [12]
HEPA (/ ˈ h ɛ p ə /, high efficiency particulate air) filter, [1] also known as a high efficiency particulate arresting filter, [2] is an efficiency standard of air filters. [ 3 ] Filters meeting the HEPA standard must satisfy certain levels of efficiency.
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