The U.S. Centers for Disease Control and Prevention's (CDC) National Institute
for Occupational Safety and Health (NIOSH) approved the Scott Model Air-Pak 4.5
respirator for occupational use by emergency responders against chemical,
biological, radiological, and nuclear agents.
The device is a self-contained breathing apparatus (SCBA) that provides users
with air from a pressurized cylinder or tank carried on the back.
The approval signifies that the product is expected to protect fire fighters
and other responders from chemical, biological, radiological, and nuclear
exposures in the line of duty. NIOSH based its determination on positive
results from rigorous laboratory tests, evaluation of product specifications
for the device, and assessment of the manufacturer's quality control procedures.
AplusA-online.de - Source: NIOSH