What is the difference between air-purifying and air-supplied respirators?
Air-purifying respirators (APR) work by removing contaminants from the air. APRs include particulate respirators, which filter out airborne particles, and “gas masks,” which filter out vapors and gases. Air-supplying respirators (ASR) protect employees by supplying clean breathable air from another source. ASRs include airline respirators, which use compressed air from a remote source; and self-contained breathing apparatuses (SCBAs), which include their own air supply. View more information about air-purifying and air-supplied respirators.
