Refill station for a dispenser can with a refill lock for an impermissible active substance

Method for operating a refill station, the refill station comprising a receiving device for receiving a dispenser can which is to be refilled with an active substance;

• an active substance container which contains the active substance and which is coupled or couplable with the receiving device, to provide the active substance for refilling the dispenser can;
• a pressure gas reservoir which is configured for providing pressurized gas and which is coupled or couplable with the receiving device, to provide pressurized gas for refilling the dispenser can;
• a valve which is configured as a three-way valve to form a fluid connection between the active substance container, the pressure gas reservoir, and the receiving device;
• wherein the method comprises:
• receiving the dispenser can which is to be refilled with the active substance at the receiving device of the refill station;
• capturing if an active substance which is to be refilled into the dispenser can which is received at the receiving device, fulfills at least one predetermined permissibility criterion;
• permitting a refill of the dispenser can with the active substance and the pressurized gas via the receiving device only when the captured active substance fulfills the at least one predetermined permissibility criterion;
• and
• preventing the dispenser can from being refilled with the active substance and the pressurized gas, when the active substance does not fulfill the at least one permissibility criterion, wherein the at least one predetermined permissibility criterion is selected from a group which is consisting of a permissibility of the active substance for the dispenser can, a permissibility of the active substance for the refill station, and a permissibility of an origin of the active substance.