In December 2001, the National Institute for Occupational Safety and Health (NIOSH) implemented a voluntary approval program for Chemical, Biological, Radiological, and Nuclear (CBRN) self-contained breathing apparatus (SCBA) respirators. NIOSH issues certificates of approval to SCBA in accordance with the requirements of Title 42 Code of Federal Regulations (CFR) Part 84.
A selection from the NIOSH Fact Sheet:
CBRN SCBA respirators are different from other NIOSH-approved SCBA in that they must also comply with additional requirements and special tests defined by NIOSH in accordance with §84.63(c), including chemical agent permeation and penetration resistance against distilled sulfur mustard (HD) and sarin (GB), and laboratory respirator protection level (LRPL) tests. In addition, NIOSH also requires CBRN SCBA to meet the applicable National Fire Protection Association (NFPA) 1981 Standard for Open-Circuit Self-Contained Breathing Apparatus for Emergency Services.
Click HERE to download a copy of the NIOSH Fact Sheet "What’s special about CBRN self-contained breathing apparatus (SCBA)?"