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  2. HEPA - Wikipedia

    en.wikipedia.org/wiki/HEPA

    HEPA (/ ˈ h ɛ p ə /, high-efficiency particulate air) filter, [1] also known as high-efficiency particulate absorbing filter [citation needed] and high-efficiency particulate arrestance filter, [2] is an efficiency standard of air filters. [3] Filters meeting the HEPA standard must satisfy certain levels of efficiency.

  3. Air filter - Wikipedia

    en.wikipedia.org/wiki/Air_filter

    High efficiency particulate arrester (HEPA), [2] [3] originally called high-efficiency particulate absorber but also sometimes called high-efficiency particulate arresting or high-efficiency particulate arrestance, is a type of air filter. Filters meeting the HEPA standard have many applications, including use in clean rooms for IC fabrication ...

  4. Air filtration in operating rooms - Wikipedia

    en.wikipedia.org/wiki/Air_filtration_in...

    High-efficiency particulate air (HEPA) filter is at least 99.97% effective in removing particles ≥0.3 μm in diameter (as a reference, Aspergillus spores are 2.5–3.0 μm in diameter). [3] High-level HEPA filtration and increasing air changes per hour (ACH) can reduce particulate matter (PM) and bacterial concentrations in the operating room.

  5. These HEPA Air Purifiers Will Help Keep Wildfire Smoke ... - AOL

    www.aol.com/hepa-air-purifiers-help-keep...

    It filters air in rooms up to 1,095 square feet, its H13 True HEPA filter works alongside the pre-filter and high-efficiency activated carbon filter to capture 99.97% of airborne particles 0.3 ...

  6. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    P100 filters, under 42 CFR part 84, are the only filters permitted to be magenta in color. HE (high-efficiency) labeled filters are only provided for powered air-purifying respirators. HE-marked filters are 99.97% efficient against 0.3 micron particles and are oil-proof.

  7. Fan filter unit - Wikipedia

    en.wikipedia.org/wiki/Fan_filter_unit

    Fan filter unit. A fan filter unit ( FFU) is a type of motorized air filtering equipment. It is used to supply purified air to cleanrooms, laboratories, medical facilities or microenvironments by removing harmful airborne particles from recirculating air. [1] The units are installed within the system's ceiling or floor grid.

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