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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. Mechanical filter (respirator) - Wikipedia

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

    Filtering half mask, reusable elastomeric respirator with pink replaceable pancake filters and grey exhalation valve Full-face elastomeric respirators seal better. [1] Mechanical filters, a part of particulate respirators, are a class of filter for air-purifying respirators that mechanically stops particulates from reaching the wearer's nose ...

  4. Chemical cartridge - Wikipedia

    en.wikipedia.org/wiki/Chemical_cartridge

    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.

  5. Elastomeric respirator - Wikipedia

    en.wikipedia.org/wiki/Elastomeric_respirator

    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.

  6. European respirator standards - Wikipedia

    en.wikipedia.org/wiki/European_respirator_standards

    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.

  7. Russia must be ready to fight NATO in Europe in next decade ...

    www.aol.com/news/putin-says-large-number...

    MOSCOW (Reuters) -Russia's defence minister said on Monday that Moscow must be ready to fight the NATO military alliance in Europe in the next decade, as President Vladimir Putin said he believed ...