StacksVerified U.S. regulatory reference

42 CFR §84.96

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The closed-circuit apparatus will be classified according to the length of time it supplies adequate breathing gas to the wearer during man test No. 4 described in Table 4 of this subpart.
  2. (b)The service time obtained on man test No. 4 will be used to classify the closed-circuit apparatus in accordance with § 84.53.