42 C.F.R. § 84.53 Service time; classification.
Title 42 - Public Health
(a) Respirators described in subparts H through L of this part shall be classified, where applicable, as approved for use during the following prescribed service times: (1) Four hours; (2) Three hours; (3) Two hours; (4) One hour; (5) Forty-five minutes; (6) Thirty minutes; (7) Fifteen minutes; (8) Ten minutes; (9) Five minutes; or (10) Three minutes. (b) Other service times may be prescribed by the Institute.
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time
§ 84.53 Service time; classification.
