Combination filter with a Dräger-specific bayonet-type connector to be used with twinfilter half masks Dräger X-plore 3000 and twinfilter full facepieces X-plore 5500. - A2: protection against gases and vapours from organic compounds - B2: protection against inorganic gases and vapours (e.g. chlorine, hydrogen sulfide, hydrogen cyanide) Filter class 2 offers medium protection and has a maximum permissible contaminant concentration of 0.5 Vol% (5000 ppm). - P3: particles up to concentrations of filter class 3: 99.95 % efficiency - marking R: for use during several work shifts - marking D: dolomite dust testing additionally passed