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

Abstract: 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).

Abstract: A support system (1) for a fan filter device (20) of a fan filter system (30) has a base strap (2) for arranging the support system on the body (40) of a user and has a securing system (3) on the base strap for securing the fan filter device in a first position (4) and in at least one different second position (5) on the base strap. The securing system has a guide element (6), secured to the base strap, to retain the fan filter device in the different positions (4, 5). The securing system has a counter-guide element (10), movably guided on the guide element via at least one guide gap (11), that has at least one securing element (12) for securing the counter-guide element on the fan filter device. A fan filter device for a fan filter system and a fan filter system are also provided.