A blower filter system (10), having a blower filter device (20) with a blower (22) and with a filter mount (24) and with a tube port (26) for connecting a respirator device (40) by means of a tube (42). The filter mount (24) is designed to receive a filter (30), on which a color coding (32) with a color specific of the pneumatic resistance of the filter (30) is arranged. The blower filter device (20) has an optical sensor device (50) for recognizing different colors of the color coding (32).
