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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.
There are two main categories of respirators: the air-purifying respirator, in which respirable air is obtained by filtering a contaminated atmosphere, and the air-supplied respirator, in which an alternate supply of breathable air is delivered. Within each category, different techniques are employed to reduce or eliminate noxious airborne ...
A respirator cartridge or gas mask canister is a type of filter that removes gases, volatile organic compounds (VOCs), and other vapors from the air through adsorption, absorption, or chemisorption.
A CDC video on the use of elastomeric respirators in healthcare. Elastomeric respirators were first used to keep health care workers safe from tuberculosis in the mid-1990s. The CDC has long recommended health care workers use elastomeric respirators during pandemics to keep themselves safe from droplet and airborne transmission.
According to 3M, respirators made according to the following standards are equivalent to US N95 or European FFP2 respirators "for filtering non-oil-based particles such as those resulting from wildfires, PM 2.5 air pollution, volcanic eruptions, or bioaerosols (e.g. viruses)": [40] Chinese KN95 (GB2626-2006): similar to US.
3M sells over 60,000 products, including adhesives, abrasives, laminates, fire protection products, personal protective equipment, various types of films, insulation materials, car care products ...
A discredited study that set off a flurry of interest in using an antimalarial drug to treat COVID-19 has now been formally withdrawn. A scientific journal on Tuesday retracted the March 2020 ...
The N95 respirator mask was developed by 3M and approved in 1972. [114] Due to its ability to filter viral particulates, its use was recommended during the COVID-19 pandemic but supply soon became short. [ 114 ]
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