Section 84.251 - Required components(a) Each vinyl chloride respirator described in § 84.250 shall, where its design requires, contain the following component parts: (2) Canister with end-of-service-life indicator;(3) Cartridge with end-of-service-life indicator;(b) The components of each vinyl chloride respirator shall meet the minimum construction requirements set forth in Subpart G of this part.