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2. Powered air-purifying respirator - Wikipedia

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

   Loose-fitting PAPRs can be useful when a fit test for a tight-fitting respirator cannot be successfully passed, for example when facial hair is present. [2] [3] Masks may be reusable or disposable. Some masks allow the full face to be seen by others, aiding in interpersonal communication. [1]

3. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   Elastomeric masks must be individually fit-tested and inspected for full efficacy. [2] They may be somewhat easier to fit than filtering facepiece respirators. Older mask designs were designed only to fit young adult men of average weight and a narrow range of ethnicities; newer ones use updated anthropometry and fit more people. [5]

4. 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 ...

5. 18 designer face masks you won't want to take off - starting ...

   www.aol.com/news/best-designer-face-masks...

   Lighter Side. Medicare. new

6. What to shop at the best Cyber Monday deals from Amazon ... - AOL

   www.aol.com/lifestyle/what-to-shop-at-the-best...

   grace & stella Gold 24-pack Under Eye Masks, $16 (was $22) at Amazon Women's Cozy Crew Neck Sweater , $20 (was $40) at Old Navy Nordstrom Moonlight Eco Knit Women's PJs , $48 (was $79) at Nordstrom

7. 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.