42 C.F.R. § 84.85 Breathing bags; minimum requirements.
Title 42 - Public Health
(a) Breathing bags shall have sufficient volume to prevent gas waste during exhalation and to provide an adequate reserve for inhalation. (b) Breathing bags shall be constructed of materials which are flexible and resistant to gasoline vapors. (c) Breathing bags shall be installed in a location which will protect them from damage or collapse by external forces, except on apparatus classified for escape only.
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Subpart H—Self-Contained Breathing Apparatus
§ 84.85 Breathing bags; minimum requirements.
