42 CFR 84.1131 - Respirators; required components.
(a) Each respirator described in § 84.1130 shall, where its design requires, contain the following component parts:
(2) Filter unit, canister with filter, or cartridge with filter;
(4) Attached blower; and
(5) Breathing tube.
(b) The components of each respirator shall meet the minimum construction requirements set forth in Subpart G of this part.