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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.
Dust masks [8] have been certified by the United States Bureau of Mines since the 1930s, [9] until being phased out after the passage of 42 CFR 84. [ 10 ] D or DM respirators , standing for 'Dust' and 'Dust/Mist' approval respectively, without approval for 'Fumes,' asbestos , radionuclides, or any certified ( 30 CFR ) HEPA filtration. [ 11 ]
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 ...
The nationwide temporary standard for face masks in the workplace would impact millions of workers and would last six months. In its absence, several states have enacted their own standards.
A powered air-purifying respirator (PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen , actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...
Equipment for use in preventing spread of disease, such as by exposure to infected individuals or contamination or infection by infectious material (including nitrile and vinyl gloves, surgical masks, respirator masks and powered air purifying respirators and required filters, face shields and protective eyewear, surgical and isolation gowns ...
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