The invention relates, among other things, to a metering device (10) for supplying at least one chemical (27) that can be produced from several different media (11a, 11b, 11c), e.g. B. a
laundry treatment substance, in particular a
disinfectant or bleaching agent, to a target device (13a, 13b, 13c), in particular a
textile washing
machine, comprising a mixing distribution arrangement (15) with several inlets (19a, 19b, 19c, 19d, 19e) and at least one outlet (20a), several containers (41a, 41b, 41c, 41d, 41e, 36) connected to the inlets (19a, 19b, 19c, 19d, 19e) which are filled with different media (11a, 11b, 11c, 11d, 11e, 12), a mixing container (21) which is communicatively connected to the outlet (20a) or switchably connectable to the outlet (20a), and in which the different media (11a, 11b, 11c) for the production of the chemical (27) are miscible with each other, and a control (23),with which, with the aid of a pump (28), the different media (11a, 11b, 11c) can be extracted from the containers (41a, 41b, 41c) in predetermined quantities and conveyed to the mixing container (21), and with which the chemical (27) can be extracted from the mixing container (21) and conveyed to the target device (13a, 13b, 13c).