Artificial Daylight tube

Although the artificial daylight and the full spectrum fluorescent tubes, like Duro-test Vitalite/Truelite , emit in the UV region, a window-glass filter is usually not required for these sources. This is because only a small fraction (approximately 0.5%) of the irradiance in the UV region is below 320 nm. 

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. 

Dynamic experiments also demonstrated photostability of molsidomine infusion under condition of artificial source illumination. A flow rate of 12.5mL/hr was used, resulting in a residence time of one hour in the infusion tubing. Simulated infusions exposed to window-glass-filtered daylight or simulated sunlight (Ultra-Vitalux lamps) showed that protection of the infusion bag alone, results in a degradation rate similar to that found for unprotected infusion bags (Fig. 8). 

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