Dispenser for discharging an in particular granular or powdery substance, use of a sucking/blowing dispenser, and method for emptying a substance reservoir

A dispenser (1) for discharging an in particular granular or powdery substance (2) by blow-out, with a blow-out duct (4), and with a suction line (5) opening into the blow-out duct (4) for sucking the substance (2) into the blow-out duct (4), wherein a positive air pressure can be built up in a duct section (7) arranged upstream of the blow-out duct (4) and closed in the direction of the blow-out duct (4) by a valve (6) opening in a pressure-dependent manner, for pressure-controlled formation of a blow-out stream in a blow-out duct (4), wherein moreover an air compression piston (8) is movable in the duct section (7) between a rest or start position and an actuation position, in which it is moved close to the valve (6), wherein the dispenser (1) has a seat for a substance storage part, and a substance storage part, wherein the substance storage part has a plurality of substance reservoirs (3), and wherein the suction line (5) has a mouth (19), which is structured in such a way that it can easily serve to pierce a substance reservoir (3), wherein moreover the substance reservoir (3) comprises a lower container in the shape of a portion of a sphere, which container is closed at the top by a film in a plane surface (20).