The loose-fitting hoods and SR 500 belt-mounted Powered Air-Purifying Respirator (PAPR) protect against particulates, gases and vapours, or a combination. The SR 500 PAPR system functions as an alternative to Air Purifying Respirators (APR) in all situations for which these are recommended. This applies particularly to work that is hard, warm or of long-duration. The above-atmospheric pressure then generated prevents pollutants from the surroundings from penetrating into the breathing zone. The SR 520 hood is available in and (M/L).
