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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). High-level HEPA filtration and increasing air changes per hour (ACH) can reduce particulate matter (PM) and bacterial concentrations in the operating room.

  5. Indoor air can be made safer than the smoky air outside. Here ...

    www.aol.com/news/indoor-air-made-safer-smoky...

    Commercial buildings’ air filters typically have a higher MERV rating, with the American Society of Heating, Refrigerating and Air Conditioning Engineers recommending the use of a system with a ...

  6. Boise’s air is not just bad — it’s dangerous. How ... - AOL

    www.aol.com/boise-air-not-just-bad-003021056.html

    Put a high-quality air filter in your furnace and air-conditioning system. ... MERV is short for minimum efficiency rating value. The higher the rating, the costlier the filter is likely to be. A ...

  7. Minimum efficiency reporting value - Wikipedia

    en.wikipedia.org/wiki/Minimum_Efficiency...

    Minimum Efficiency Reporting Value, commonly known as MERV, is a measurement scale designed in 1987 by the American Society of Heating, Refrigerating and Air-Conditioning Engineers ( ASHRAE) to report the effectiveness of air filters in more detail than other ratings. For example, often a high-efficiency particulate air ( HEPA) filter is ...

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