Fluorescence confirmatory studies

Because the confirmatory study also represents "worst-case" conditions, there should be few chances that an unstable product is not discovered. Examples of sources currently used by the pharmaceutical industry are xenon- and metal halide lamps (Option 1), artificial- and full spectrum daylight fluorescent tubes (Option 1), white fluorescent- and near UV-fluorescent tubes (Option 2). In (Northern) Europe (e.g., Scandinavia, England, and Germany), it seems that Option 1 with the xenon lamp is the preferred source. 

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