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The PMK gas mask contains a drinking tube, allowing soldiers wearing the mask to rehydrate without removing the mask itself. The system consists of a special canteen cap, which will only allow water to flow through when connected to the tube leading to the mask. This system is compatible with standard type M drinking systems.
half-mask, from below the eyes to below the chin; fullface mask, from above the eyes to below the chin; Some elastomeric masks include one-way valves to let exhaled air out unfiltered. This reduces the resistance when the user is breathing out, and some find it makes the mask more comfortable. [2] It may also reduce inwards leakage. [10]
The Pesky Pants prank was an ongoing practical joke between 1965 and 1989. Two brothers-in-law took turns giving each other the same pair of trousers as a Christmas present with the packaging becoming more elaborate each year.
Mask (computing), in computer science, a bit pattern used to extract information from another bit pattern Affinity mask, a bit mask indicating what processor a thread or process should be run on; Image mask, applied to digital images to "cut-out" the background or other unwanted features
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.
This in turn is of uncertain origin – perhaps from a Germanic source akin to English "mesh", but perhaps from mask-"black", a borrowing from a pre-Indo-European language. [2] One German author claims the word "mask" is originally derived from the Spanish más que la cara (literally, "more than the face" or "added face"), which evolved to ...
The protection provided by an FFP2 (or FFP3) mask includes the protection provided by a mask of the lower-numbered classes. A mask conforming to the standard must have its class written on it, along with the name of the standard and its year of publication, as well as any applicable option codes, e.g. “EN 149:2001 FFP1 NR D”.
US Ambassador to Indonesia Sung Kim accompanied by local officials at the Presidential Palace wearing face masks amid the COVID-19 pandemic. During the COVID-19 pandemic, face masks or coverings, including N95, FFP2, surgical, and cloth masks, have been employed as public and personal health control measures against the spread of SARS-CoV-2, the virus that causes COVID-19.