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According to 3M, respirators made according to the following standards are equivalent to US N95 or European FFP2 respirators "for filtering non-oil-based particles such as those resulting from wildfires, PM 2.5 air pollution, volcanic eruptions, or bioaerosols (e.g. viruses)": [40] Chinese KN95 (GB2626-2006): similar to US.
Gas masks are extensively used in mining and construction. They are used against paint vapors, solvents, silica dust, and other hazardous particles and gasses. [5] Masons and carpenters use them against dusts and adhesives. [5]: Table2-1 Elastomeric respirators may be used to protect against welding fumes.
C 8 fluorinated urethane constituent [3] that has later been replaced by a C 4 alternative. 3M reformulated Scotchgard and since June 2003 has replaced perfluorooctanesulfonic acid (PFOS) with perfluorobutanesulfonic acid (PFBS). [4] PFBS has a much shorter half-life in people than PFOS (a little over one month vs. 5.4 years).
Combined gas and particulate respirator canister for protection against acid gases, the type of BKF (БКФ). It has a transparent body and special sorbent that changes color upon saturation. This color change may be used for timely replacement of respirator filters, like an end-of-service-life indicator, ESLI.
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.
The European respirator standards refer to the filtering classification by EN 149, EN 14683, and EN 143, all European standards of testing and marking requirements for respirators. [1] FFP standard masks (where FFP stands for filtering facepiece) [ 2 ] cover the nose, mouth and chin and may have inhalation and/or exhalation valves.