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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.
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The venturi mask, also known as an air-entrainment mask, is a medical device to deliver a known oxygen concentration to patients on controlled oxygen therapy. [ 1 ] [ 2 ] The mask was invented by Moran Campbell at McMaster University Medical School as a replacement for intermittent oxygen treatment.
Under 42 CFR 84, chemical cartridges and gas mask canisters are defined separately. Use of the TC-14G canister schedule or the TC-23C chemical cartridge schedule for a given respirator depends on whether "acid gas" is a designated contaminant, which is designated for gas mask canisters only, or if the manufacturer is obligated to list all ...
It's a more affordable alternative to pricey red light therapy masks that sit on your skin. The Solawave is a 4-in-1 wand that provides red light therapy, therapeutic warmth to soothe skin and ...
In microtechnology, mask inspection or photomask inspection is an operation of checking the correctness of the fabricated photomasks, used, e.g., for semiconductor device fabrication. [ 1 ] Modern technologies for locating defects in photomasks are automated systems that involve scanning electron microscopy and other advanced tools.
Arclight (Philippa Sontag) is a supervillain appearing in American comic books published by Marvel Comics. Created by writer Chris Claremont and artist John Romita Jr. , she is a former military officer who later becomes an assassin.
Can we imagine ourselves back on that awful day in the summer of 2010, in the hot firefight that went on for nine hours? Men frenzied with exhaustion and reckless exuberance, eyes and throats burning from dust and smoke, in a battle that erupted after Taliban insurgents castrated a young boy in the village, knowing his family would summon nearby Marines for help and the Marines would come ...