Full definition
Equipment that protects against inhalation of dusts, gases, vapors, fumes or oxygen-deficient atmospheres. Types: disposable N95/P100 (particles), half-mask with interchangeable cartridges (gases/vapors by color code), full-face mask (eyes included), PAPR (motorized air-purifying), SCBA (self-contained breathing apparatus for IDLH atmospheres). Standards: NOM-116-STPS, NIOSH 42 CFR 84. Annual quantitative or qualitative fit testing required.