MIL-C-17605C, MILITARY SPECIFICATION: CHARCOAL, ACTIVATED, UNIMPREGNATED (13-FEB-1980)

MIL-C-17605C, MILITARY SPECIFICATION: CHARCOAL, ACTIVATED, UNIMPREGNATED (13-FEB-1980)., This specification covers one type of unimpregnated, activated charcoal for use in air filters in submarines