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2. Dust mask - Wikipedia

   en.wikipedia.org/wiki/Dust_mask

   A dust mask is a flexible paper pad held over the nose and mouth made for protection against chronically toxic nuisance dusts, like from occupational exposure to plant dusts like hay. [1] They are not intended to provide protection from most airborne hazards.

3. Dust-Off - Wikipedia

   en.wikipedia.org/wiki/Dust-Off

   Dust-Off. Dust-Off is a brand of dust cleaner (refrigerant-based propellant cleaner, which is not compressed air and incorrectly called "canned air"). The product usually contains difluoroethane; although some use tetrafluoroethane and tetrafluoropropene as a propellant. It is used to blow particles and dust from computer, keyboards ...

4. Mechanical filter (respirator) - Wikipedia

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

   They highlighted the risk of infection from touching the contaminated outer surface of the mask, which even professionals frequently unintentionally do, and recommended washing hands every time before touching the mask. To reduce mask surface contamination, they recommended face shields, and asking patients to wear masks too ("source masking ...

5. 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.

6. 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 ...

7. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   In construction, elastomeric masks are rarer than disposable mechanical filters; the disposable masks are preferentially issued because supervisors prefer to avoid cleaning and storage. [5]: Box2-1 In industry, when there are few workers, each may be responsible for their own permanently-assigned mask; where there are more workers, there may be ...