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  2. 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.

  3. Respirator assigned protection factors - Wikipedia

    en.wikipedia.org/wiki/Respirator_Assigned...

    The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...

  4. 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.

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

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

    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 particles (down to 0.3 microns ...

  6. These KN95 and N95 Face Masks Help Protect Against the Flu ...

    www.aol.com/kn95-n95-face-masks-help-182200553.html

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  7. What type of mask works best against COVID-19? Where ... - AOL

    www.aol.com/type-mask-works-best-against...

    As omicron spreads, experts say N95, KN95 and other respirator masks do the best job of blocking ... At the same time, the question of which type of mask to wear has grown increasingly complicated ...

  8. Respirator - Wikipedia

    en.wikipedia.org/wiki/Respirator

    If respirators must be used, under 29 CFR 1910.134, OSHA requires respirator users to conduct a respirator fit test, with a safety factor of 10 to offset lower fit during real world use. [90] However, NIOSH notes the large amount of time required for fit testing has been a point of contention for employers. [105]

  9. Powered air-purifying respirator - Wikipedia

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

    The following table lists the air flow requirements for NIOSH-approved PAPRs under Part 84.175. Tight-fitting PAPRs may be fit tested with the facepiece unpowered and in negative-pressure (under 29 CFR 1910.134) while loose-fitting PAPR fit test protocols have not been changed from 30 CFR 11.

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