42 CFR §84.111
- (a)Each gas mask described in § 84.110 shall, where its design requires, contain the following component parts:
- (1)Facepiece or mouthpiece and noseclip;
- (2)Canister or cartridge;
- (3)Canister harness;
- (4)External check valve; and
- (5)Breathing tube.
- (b)The components of each gas mask shall meet the minimum construction requirements set forth in subpart G of this part.