§84.91. Breathing resistance test; exhalation. — Inbound Citations
42 C.F.R. § 84.91
Statutory Authority
Cited by 1 regulation in release Current.
Citations to §84.91(e)
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(c) The inhalation resistance of closed-circuit apparatus shall not exceed the difference between exhalation resistance (§ 84.91(e)) and 10 cm. (4 inches) water-column height.