Respirator 13
Respirator 13 : Device to give protection against breathing hazards such as dusts, gases or vapours, poisonous contaminants, or lack of oxygen. There are three types: (a) Air-purifying respirator: This draws inhaled air through a purifying filter to remove dusts, or certain gases or vapours. (b) Supplied-air respirator: This supplies clean air from a source outside the contaminated area. (c) Self-contained breathing apparatus: This supplies air from a compressed air bottle worn by the user
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