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2. Dust mask - Wikipedia

   en.wikipedia.org/wiki/Dust_mask

   A notable occupational use of dust masks is in farming, where dust masks are used to avoid the effects of farmer's lung, a disease caused by the inhalation of dusts from agricultural products. [1] The toxicity mainly comes from allergy to mold in the dust, which can lead to lung damage due to the immune response, [ 7 ] as opposed to an inherent ...

3. N95 respirator - Wikipedia

   en.wikipedia.org/wiki/N95_respirator

   An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

4. Mechanical filter (respirator) - Wikipedia

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

   The protection provided by an FFP2 (or FFP3) mask includes the protection provided by a mask of the lower-numbered classes. A mask conforming to the standard must have its class written on it, along with the name of the standard and its year of publication, as well as any applicable option codes, e.g. “EN 149:2001 FFP1 NR D”.

5. Best Face Masks for the Holidays to Give and Wear This Season

   www.aol.com/best-holiday-masks-wear-season...

   $9.50 at Old Navy. Disposable Face Mask, 10 Pack. ... Disposable Face Mask, 10 Pack. Medrespiria. Disposable, dust proof, three-ply masks in a fun holiday print. $4.29 at Amazon . Happy Kwanzaa ...

6. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   Seeking to improve on the Black Veil respirator, Cluny Macpherson created a mask made of chemical-absorbing fabric which fitted over the entire head: a 50.5 cm × 48 cm (19.9 in × 18.9 in) canvas hood treated with chlorine-absorbing chemicals, and fitted with a transparent mica eyepiece.

7. 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 ...