StacksVerified U.S. regulatory reference

42 CFR §84.52

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Respirators described in subparts H through L of this part shall be classified as approved for use against any or all of the following respiratory hazards:
  1. (a)Oxygen deficiency;
  2. (b)Gases and vapors; and
  3. (c)Particles, including dusts, fumes and mists.