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Cleaning agents or hard-surface cleaners are substances (usually liquids, powders, sprays, or granules) used to remove dirt, including dust, stains, foul odors, and clutter on surfaces. [1] Purposes of cleaning agents include health, beauty, removing offensive odor, and avoiding the spread of dirt and contaminants to oneself and others.
Oxygen cleaning may be required for concentrations as low as 23% Other common specifications for oxygen cleaning include ASTM G93 and CGA G-4.1. Cleaning agents used range from heavy-duty industrial solvents and detergents such as liquid freon, trichlorethylene and anhydrous trisodium phosphate, followed by rinsing in deionised water. These ...
For the mechanical device used to assist breathing, see Ventilator. For the mask worn during surgery, see Respirator § Surgical N95, and Surgical mask. A half-face elastomeric air-purifying respirator. This kind of respirator is reusable, with the filters being replaced periodically. A respirator is a device designed to protect the wearer from ...
A cloth face mask made out of 2-ply construction with layers of 85% polyester and 15% cotton fabric. Other names. Fabric mask. [ edit on Wikidata] A cloth face mask is a mask made of common textiles, usually cotton, worn over the mouth and nose. When more effective masks are not available, and when physical distancing is impossible, cloth face ...
An N95 respirator [1] is a filtering facepiece respirator or elastomeric filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 classification of air filtration, meaning that it filters at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers [2] under 42 CFR Part ...
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.
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