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2. US FDA identifies recall of ResMed's respiratory devices as ...

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   ResMed was recalling some models of its continuous positive airway pressure (CPAP) masks, AirFit and AirTouch, due to possible magnetic interference with certain medical devices and implants which ...

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 - Wikipedia

   en.wikipedia.org/wiki/Respirator

   Use of the TC-14G canister schedule or the TC-23C chemical cartridge schedule for a given respirator depends on whether "acid gas" is a designated contaminant, which is designated for gas mask canisters only, or if the manufacturer is obligated to list all designated contaminants supported by a given chemical cartridge.

5. Supplied-air respirator - Wikipedia

   en.wikipedia.org/wiki/Supplied-air_respirator

   SARs may be either constant-flow or pressure-demand respirators. Constant-flow respirators supply a steady stream of air, some of which escapes from the wearer end unbreathed. 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.

6. The Best Face Masks for Small Heads So You Can *Finally ... - AOL

   www.aol.com/lifestyle/best-face-masks-small...

   5. Bloch Soft Stretch Reusable Face Mask. Cozy fabric, an adjustable fit and specifically made with smaller heads in mind, Bloch’s reusable masks have amassed more than 7,000 five-star reviews ...

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