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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. 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.

4. Stock up on KN95s after the updated CDC guidelines ... - AOL

   www.aol.com/lifestyle/stock-kn95s-updated-cdc...

   Shop it: N95 Mask Co. KN95 Face Mask, 50-Pack, $130 (was $150), n95maskco.com The reviews quoted above reflect the most recent versions at the time of publication. Read More from Yahoo Lifestyle :

5. Powered air-purifying respirator - Wikipedia

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

   NIOSH particulate classes for powered air-purifying respirators Particulate Respirator class Minimum efficiency level Permitted for TB Permitted for asbestos [12] 0.3 micron DOP: HEPA or HE 99.97% Yes Yes 0.075 to 1.86 micron NaCl: PAPR100-N Rating discontinued Not yet defined 0.075 to 1.86 micron DOP PAPR100-P

6. Joint Service General Purpose Mask M-50/M-51 - Wikipedia

   en.wikipedia.org/wiki/Joint_Service_General...

   It is an above-the-neck, chemical-biological (CB) respirator that protects against battlefield concentrations of CB agents, toxins, toxic industrial materials, and radioactive particulate matter. The M50/51 masks replace the M40 field protective mask and M42, the MCU-2/P series masks, and the M45 of the Land Warrior Program. [2]

7. Stock up on KN95s after the updated CDC guidelines ... - AOL

   www.aol.com/lifestyle/stock-kn95s-updated-cdc...

   Shop it: N95 Mask Co. KN95 Face Mask, 50-Pack, $130 (was $150), n95maskco.com The reviews quoted above reflect the most recent versions at the time of publication. Read More from Yahoo Lifestyle :