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degree of protection (3) For the purpose of this regulation, "degree of protection" means the ratio of the airborne concentration of the contaminant outside the respirator to the concentration of contaminant inside the face piece of the respirator.
PU(A) 131/2000 - OCCUPATIONAL SAFETY AND HEALTH (USE AND STANDARDS OF EXPOSURE OF CHEMICALS HAZARDOUS TO HEALTH) REGULATIONS 2000
8. Compliance with permissible exposure limit using respirator |