MIL-STD-1805A, MILITARY STANDARD: BREATHING APPARATUS, SELF-CONTAINED, 30-MINUTES (8 APR 1991)

MIL-STD-1805A, MILITARY STANDARD: BREATHING APPARATUS, SELF-CONTAINED, 30-MINUTES (8 APR 1991)., This specification covers 30 minute self-contained breathing apparatus for respiratory protection in oxygen-deficient, toxic, or smoked filled atmospheres containing hazardous vapors or gases.