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During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.
The fitting characteristic of a respirator is the ability of the mask to separate a worker's respiratory system from ambient air. This is achieved by tightly pressing the mask flush against the face (without gaps) to ensure an efficient seal on the mask perimeter.
The table below shows that the two groups had only small differences in ranking the best and worst presidents. Both groups agreed on the composition of nine of the top ten presidents (and were split over the inclusion of either Lyndon B. Johnson or Dwight D. Eisenhower) and six of the worst seven (split over Jimmy Carter or Calvin Coolidge).
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R99 may refer to: R99 (New York City Subway car) R99 (star) Embraer R-99, a Brazilian Air Force military aircraft; Hydrotreated vegetable oil, a sustainable fuel; HMS ...
The National Board of Review Award for Best Film is one of the annual awards given since 1932 by the National Board of Review of Motion Pictures. [1] Winners
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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.