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2. Dust mask - Wikipedia

   en.wikipedia.org/wiki/Dust_mask

   A notable occupational use of dust masks is in farming, where dust masks are used to avoid the effects of farmer's lung, a disease caused by the inhalation of dusts from agricultural products. [1] The toxicity mainly comes from allergy to mold in the dust, which can lead to lung damage due to the immune response, [ 7 ] as opposed to an inherent ...

3. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   In Europe, regulation allows for dust masks under FFP1, where 20% inward leakage is allowed, with a minimum filtration efficiency of 80%. [124] South Korea allows 20% filter leakage under KF80. In the US, NIOSH noted that under standards predating the N95, 'Dust/Mist' rated respirators could not prevent the spread of TB. [125]

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. 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.

6. Mechanical filter (respirator) - Wikipedia

   en.wikipedia.org/wiki/Mechanical_filter_(respirator)

   The protection provided by an FFP2 (or FFP3) mask includes the protection provided by a mask of the lower-numbered classes. A mask conforming to the standard must have its class written on it, along with the name of the standard and its year of publication, as well as any applicable option codes, e.g. “EN 149:2001 FFP1 NR D”.

7. Respirator assigned protection factors - Wikipedia

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

   Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).