The use of a material as a standard for referencing luminescence signals

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The standard has a transparent base material that is made of a lanthanum-phosphate-glass, a fluorine-phosphate glass, a fluorine-crown glass, a lanthanum glass, a glass ceramic or a lithium-aluminosilicate-glass ceramic. The base material has a volume doping with a constituent part that is fluorescent and luminescent. The constituent part has a rare earth metal and/or a non-ferrous material e.g. cobalt, chrome or manganese. Independent claims are also included for the following : (1) a method for producing a standard (2) an application of the standard as a luminescence standard for characterizing a long-time stability of a luminescence measuring system.