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  2. Powered air-purifying respirator - Wikipedia

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

    A powered air-purifying respirator (PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen , actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...

  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. Surprise! HSN just launched a rare clearance saleā€”up to 50 ...

    www.aol.com/lifestyle/surprise-hsn-just-launched...

    Well, grab your credit card, because HSN is having a rare clearance sale — and it's only for 24 hours. Right now, you can save up to 50 percent off a massive range of items at HSN and get free ...

  5. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.

  6. Escape breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Escape_breathing_apparatus

    Polish Au-2 escape respirator. Escape breathing apparatus, also called escape respirators, escape sets, self-rescuer masks, emergency life saving apparatus (ELSA), emergency escape breathing devices (EEBD), and Respiratory Protective Smoke Escape Devices (RPED), [1] [2] are portable breathing apparatus that provide the wearer with respiratory protection for a limited period, intended for ...

  7. Supplied-air respirator - Wikipedia

    en.wikipedia.org/wiki/Supplied-air_respirator

    Pressure-demand respirators supply air only when the pressure in the wearer's mask drops (that is, when they inhale). This saves air but allows more inwards leakage. [ 4 ] [ 1 ] [ 2 ] Pressure-demand respirators can only be used with a sealed elastomeric mask, not with a loose-fitting hood [ 4 ] (like those used in powered air-purifying ...