A light fixture assembly including an illumination assembly in the form of one or more light emitting diodes is interconnected to an electrical energy source by control circuitry. The dosing cassette will in a typical embodiment carry a number of prepared doses, which for protection of the medical powder are covered by a metallic or plastic foil. The method includes receiving an ENUM query including a subscriber identifier. Namely, the light outputted from the liquid crystal display device passes through the first linearly polarizing plate without being changed. The samples can either be passed in series through the plurality of wet-processing stations, or can be passed in parallel through the wet-processing stations. While one RIM of a node is being upgraded, the other RIM remains operational.