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  2. Respirator fit test - Wikipedia

    en.wikipedia.org/wiki/Respirator_fit_test

    The main advantage of qualitative fit test methods is the low cost of equipment, while their main drawback is their modest precision, and that they cannot be used to test tight-fitting respirators that are intended for use in atmospheres that exceed 10 PEL (due to the low sensitivity). To reduce the risk of choosing a respirator with poor fit ...

  3. Powered air-purifying respirator - Wikipedia

    en.wikipedia.org/wiki/Powered_air-purifying...

    PAPRs have the advantage of eliminating breathing resistance caused by unpowered negative-pressure respirators such as N95 masks. This makes them usable by persons who are medically disqualified from negative-pressure respirators. [3] Loose-fitting PAPRs may also be selected for people who cannot pass a fit test due to facial hair or other reasons.

  4. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.

  5. What's the Difference Between an N95 and KN95 Respirator? - AOL

    www.aol.com/news/whats-difference-between-n95...

    What is a N95 respirator mask? According to Dr. Kohl, N95 is the certification standard used in the United States to describe a tight-fitting respirator that filters out at least 95 percent of ...

  6. N95 respirator - Wikipedia

    en.wikipedia.org/wiki/N95_respirator

    An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

  7. Where to find NIOSH-approved N95 masks right now - AOL

    www.aol.com/news/where-niosh-approved-n95-masks...

    DemeTECH N95 Respirator $65.00 at Amazon. DemeTECH N95 Respirator $75.00 at DemeTECH. 3M Aura N95 Respirator . 3M’s Aura N95 Respirator is available in a pack of three, 10 or 20. It comprises a ...