StacksVerified U.S. regulatory reference

42 CFR §84.103

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The apparatus shall satisfy the respiratory requirements of the wearer for the classified service time.
  2. (b)Fogging of the eyepiece shall not obscure the wearer's vision, and the wearer shall not experience undue discomfort because of fit or other characteristics of the apparatus.
  3. (c)When the ambient temperature during testing is 24 ±6 °C. (75 ±10 °F.), the maximum temperature of inspired air recorded during man tests shall not exceed the following, after correction for deviation from 24 °C. (75 °F.):