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  2. M50 Joint Service General Purpose Mask - Wikipedia

    en.wikipedia.org/wiki/M50_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]

  3. 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.

  4. Powered air-purifying respirator - Wikipedia

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

    [2] [3] Masks may be reusable or disposable. Some masks allow the full face to be seen by others, aiding in interpersonal communication. [1] PAPRs have low breathing resistance, unlike filtering facepiece respirators such as N95 masks. [3] A PAPR may have adjustable air flow rates for added comfort. [1]

  5. Respirator - Wikipedia

    en.wikipedia.org/wiki/Respirator

    The fitting characteristic of a respirator is the ability of the mask to separate a worker's respiratory system from ambient air. This is achieved by tightly pressing the mask flush against the face (without gaps) to ensure an efficient seal on the mask perimeter.

  6. FM12 NBC Respirator - Wikipedia

    en.wikipedia.org/wiki/FM12_NBC_Respirator

    The FM12 also has an inner mask to prevent fogging of the lenses. The 'ridge' present around the edge of the S10 is absent from the FM12. The main noticeable difference between the FM12 and the S10 is the ability of some FM12's to mount two filters to the mask simultaneously, as was done by the SBS in the Gulf War. When only one filter is ...

  7. Respirator assigned protection factors - Wikipedia

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

    The APF for negative pressure half mask respirators are twofold. But this difference cannot be considered separately from recommendations for use of respirators. The use of half-face masks in the US is limited to 10 PEL for the "worst case" - work in the polluted atmosphere of 8 hours per day, 40 hours a week.

  8. The IRS ‘Get My Payment’ Tool for Stimulus Payments — What It ...

    www.aol.com/irs-payment-tool-stimulus-payments...

    More than 169 million payments worth about $400 billion have been sent out by the IRS since Congress passed the American Rescue Plan stimulus relief bill in March. See: Fourth Stimulus Checks ...

  9. S10 NBC Respirator - Wikipedia

    en.wikipedia.org/wiki/S10_NBC_Respirator

    The S10 respirator was originally due to be replaced by the new General Service Respirator (GSR) in 2007, although replacement efforts officially began in 2011 and all S10 Respirators have since been replaced with the GSR. All issued filters for the S10 have expired, the last of which expired in 2014. No new S10 Respirators will be bought. [3]