High-Efficiency Particulate Air Filter

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Definition - What does High-Efficiency Particulate Air Filter mean?

A high-efficiency particulate air filter is a mechanical air purifier used to remove particulates from the air that cause allergies, asthma, and other health conditions. This highly effective filtration system can remove dust, spores, mold, and hair from the air. A high-efficiency particulate air filter is typically found in air purification systems.

SureHire explains High-Efficiency Particulate Air Filter

In workplaces such as factories and hospitals, high-efficiency particulate air filters may be used in order to protect employees by effectively removing dust, mold, and spores that can cause allergies and other medical conditions. The high-efficiency particulate air filter, or HEPA Filter for short, removes airborne particulates by trapping them in a system of dense fibers. The filter uses interception, impaction, and diffusion as mechanisms to cause the contaminants to adhere to the fibers. According to the standards set out by the National Institute for Occupational Safety and Health (NIOSH), a HEPA filter must trap 99.97% of particulates that measure 0.3 microns in diameter.

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