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Virus filtration performance of residential HVAC filters

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The N80 cometh

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New metrics for filter selection and ‘true cost’ determination

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Mechanisms for particle filtration

HEPA and ULPA filters have been in use around the world for many years. The first HEPA filter was developed in the late 1940s. The original procedures to test these filters were also developed around the same time. Although these original test procedures are still practiced in the U.S.

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Water is a vital commodity needed for energy-generation and commercial and industrial operations. Industrial reverse osmosis (RO) applications provide water for manufacturing, fabricating, processing, washing, steam generation and cooling, and for incorporating into the products themselves.

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Environmental and regulatory requirements for indoor air quality have led to an increase in the requirement of air filtration products, which has lead to an increase in sales of air filters. One of the effects of the increase is the use of mini pleat pack filters to improve indoor air quality.

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