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  2. Mechanical filter (respirator) - Wikipedia

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

    Some methods may not visibly damage the mask, but they ruin the mask's ability to filter. This has been seen in attempts to sterilize by soaking in soap and water, heating dry to 160 °C (320 °F), and treating with 70% isopropyl alcohol, and hydrogen peroxide gas plasma [65] (made under a vacuum with radio waves [69]). The static electrical ...

  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. Respirator assigned protection factors - Wikipedia

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

    They used different control substances (argon, [3] halogenated hydrocarbon vapour, [4] aerosols of sodium chloride and oil mist, [5] fluorophores, [6] dioctyl phthalate, [7] [8] and others, and they measured their concentrations under the mask, and outside masks (simultaneously). The ratio of the measured concentrations is an indicator of the ...

  5. The TikTok sheet mask by Biodance is at the lowest price I've ever seen (and I'm a beauty editor who pays attention to these things). Shop it here now: I Can't Stop Using That TikTok Face Mask ...

  6. Oxygen breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Oxygen_Breathing_Apparatus

    The bags along either side of the chest unit cool the air mixture before inhalation and is a surprisingly effective system, with the air being quite cool when entering the face mask. [clarification needed] There is a 60-minute timer at the top of the chest unit which, during the fighting of a casualty, [clarification needed] is set for only 45 ...

  7. The Best Hydrating Face Masks in 2024 - AOL

    www.aol.com/entertainment/best-hydrating-face...

    A sheet mask is the epitome of self-care. Draw a bath, light some candles and put on your face mask for ultimate relaxation. Neutrogena Hydro Boost Hydrating Hydrogel Mask is one of the best ...

  8. Disposable masks can take up to 450 years to decompose ... - AOL

    www.aol.com/lifestyle/disposable-masks-450-years...

    According to recent independent lab tests commissioned by TheNew York Times, two masks in particular — Enro ($16.50 each) and Happy Masks Pro ($24 a pop) blocked “94 percent to 99 percent of ...

  9. Respirator fit test - Wikipedia

    en.wikipedia.org/wiki/Respirator_fit_test

    U.S. law requires employers to offer employees a mask with large enough fit factor. For half face-piece masks (used when the concentration of harmful substances is not more than 10 PEL), the fit factor should not be less than 100; and for full face masks (not more than 50 PEL), the fit factor should not be less than 500. The safety factor of 10 ...