DOSING APPARATUS

A metering device for metering powdery or solid-like media such as detergents or disinfectants and for supplying the media in a dissolved state to a washing or cleaning system, including a support, in particular a cartridge support, to which a container, in particular a cartridge, with a powdery or solid-like medium can be attached. The support or the container includes a grid which prevents the medium from exiting the container. A spray nozzle controlled by a controller of the metering device dispenses water for solvating the medium. The medium dissolved in water and passing through the grid can be supplied to the washing or cleaning system via a supply device. The metering device also has a switching device that can be activated by the controller and has at least two different switching states for operating the spray nozzle in different operating modes.