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CDC - NIOSH Pocket Guide to Chemical Hazarda - Fthy} benzene Page 2of2 Up to 800 ppm: (APF 1o)Any chemical cartridge respirator with organic vapor cartridge(s) (APF= 5o)Any air-purifying, full-facepiece respirator(gas mask)with a chin-style,front-or back-mounted organic vapor canister (APF 25)Any powered,air-purifying respirator with organic vapor cartridge(s)* (APF 1o)Any supplied-air respirator* (APF 5o)Any self-contained breathing apparatus with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = io,000)Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure- demand or other positive-pressure mode (APF io,000)Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or 1 other-positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus (APF 50)Any air-purifying, full-facepiece respirator(gas mask)with a chin-style,front-or back-mounted organic vapor canister Any appropriate esca e-type, self-contained breathing apparatus Important additional information about respirator selection(ygintrod.htrnl*rnustread) See also: INTRODUCTION (Zniosh/npg/pgintrod.htrnl) See ICSC CARD: 0268(/nioshZipcsneng/"``nenIZO268.html) See MEDICAL TESTS: oo98 (/niosh/doesZ20O.Ci-lioZnmedooc)8.html) -......................--........-...................................................................... -................................ -----------'----------------'------'--------'-- Page last,nuc°cu --- Page last updated:FebruarT 13,2015 Couon omocc Education and Information Division ----'-------------------------'-'-------------'----------------'-------------------------------------- Centers for Disease Control and Prevention 1600Clifton Road Atlanta,GA 30329-4027,USA 0on-CDC-zNF0(000-232-4636)M:(808)232-6348-Contact CDC—INFO -___U_*SA*gOV Government Made Easy b*"'//'t1r'117X17 ,A, ...An,x^ ^^_` ..~. 1— _