42 C.F.R. § 84.115 Breathing tubes; minimum requirements.
Title 42 - Public Health
Flexible breathing tubes used in conjunction with gas masks shall be designed and constructed to prevent: (a) Restriction of free head movement; (b) Disturbance of the fit of facepieces or mouthpieces; (c) Interference with the wearer's activities; and (d) Shutoff of airflow due to kinking, or from chin or arm pressure.
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Subpart I—Gas Masks
§ 84.115 Breathing tubes; minimum requirements.
