Abstract: A tool adapted for use with a diffuser cartridge and a fluid container, wherein the tool is adapted to facilitate insertion and removal of the diffuser cartridge to and from the fluid container. The diffuser cartridge contains mineral agent beads or other materials which can enhance the quality of fluid contained within the container.

Abstract: In a device for controlling an electric motor, especially in motor vehicles, for setting a setting element, moved by the electric motor, as a function of the deviation of an actual setting from a nominal setting of the setting element, by means of a controller, which contains a microprocessor that carries out a hardware initialization routine at least in one step and a software initialization routine optionally in a second step, once the controller has been switched on, before the actual setting of the setting element can be determined in the controller, the microprocessor is constructed in such a manner that it short-circuits the electric motor independently of the actual setting of the setting element, directly after the hardware initialization routine, by generating a defined switching state of its outputs, associated with the control of the electric motor.