42 C.F.R. § 84.51 Entry and escape, or escape only; classification.
Title 42 - Public Health
Respirators described in subparts H through L of this part shall be classified for use as follows: (a) Entry and escape. Respirators designed and approved for use during entry into a hazardous atmosphere, and for escape from a hazardous atmosphere; or (b) Escape only. Respirators designed and approved for use only during escape from a hazardous atmosphere.
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time
§ 84.51 Entry and escape, or escape only; classification.
