An apparatus for preparing a medical solution by adding substances present in solid molded bodies to a solvent comprises a mixing container, which can be filled through an inlet with a solvent and from which the solution can be supplied to an application via an outlet, and which also has a feed port, through which the solid molded body can be introduced into the mixing container, as well as a dosing apparatus for controllable selective addition of solid molded bodies or parts thereof with different ingredients and/or different concentrations of ingredients from one or more storage containers, in which one or more corresponding receptacles of the apparatus are stored and in which the solid molded bodies are stored in such a way that they can be removed. The apparatus may also have a code detection device for detecting and analyzing a machine-readable code associated with a storage container, said code containing information about which ingredients are contained in the solid molded bodies stored in the respective storage container.

A device for producing a wet granulated substance for an electrode, the device including a storage tank in which a solid component is stored, liquid supply units configured to supply a liquid component, and a stirring member configured to stir the solid component and the liquid component together. The liquid supply unit includes a nozzle configured to allow the liquid component to drop, a pump configured to repeatedly switch between a first state in which a pressure is applied to the liquid component and a second state in which a lower pressure than in the first state is applied to the liquid component, and a rotating member that is provided between the nozzle and the storage tank, has a disk shape with irregularities formed on the edge, and rotates in a non-horizontal plane.