- Protection against gases and vapours of organic compounds with boiling point of less than 65 C - low boiler, are divided into four groups: AX filters provide protection against the following low boilers of groups 1 and 2 - group 1: low heater, against which protection by AX-F. filter is accessible Highest permissible gas concentration size 1: 100 ml m3 for max. 40 minutes or 500 ml m3 for max. 20 min. Acetaldehyde 2-aminobutane 2-amino-2-methylpropane 2-bromine-2-chlorine-1,1,1-trifluorothane bromethane 1,3-butadiene 1-chlorine-1,1-difluoroethane chlorine-fluoromethane 2-chlorine-1,3-butadiene-3-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-chlorine-1-propen 1-1-1-Dichloroethane, Dichloromethane, Diethylamine, 1.1-Difluorethene, Dimethyl Ether, 1.1-Dimethylethylamine, 1.2-Epoxypropane, Ethanthiol, Ethylene Oxide, Iodmethane, Methanol, Monochlordimethyl Ether, 2-Propenether, 2-Propenether Richlormethmethmethmethane Group 2: low boiler, against which protection is achieved by AX filter, maximum permissible gas concentration size 2: 1000 ml m3 for max. 60 min or 5000 ml m3 for max. 20 min. Acetone Bromethane Butane Chloroethane 2-Chlorpropane 1,3-Cyclopentadien Dibromdifluormethane 1,1-Dichloroethane 1,2-Dichloroethane (cis) 1,2-Dichloroethane (trans) 1,2-Dichloroethane Die. thylethththyleimethoxymethane dimethylpropane 1.3 epoxypropane ethyl formate glyoxal methyl acetate methyl butane methyl formate methylpropane n-pentane propanal -robust aluminium housing -standardised connection for respirator masks with DIN round thread connection EN 1438 EN 17 quality product "Made in Germany". We always supply factory fresh filters - we always order this filter directly from the manufacturer, because according to BGR 190, AX filters may only be used in delivery condition (factory fresh)From the official Dräger specialist retailer. Factory fresh. Filter class AX.