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Tag Articles : Photostability

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Light Stability Testing of Liquids Using SUNTEST

November 15, 2024 | Dr. Oliver D Rahaeuser

Applications

Over the past 20 years, various test methods have been developed for testing liquid using Atlas SUNTEST instruments. Preparations inside vials, petri dishes, or small quartz containers are typical applications. If a realistic full-spectrum exposure with controlled temperature is required, SUNTEST CPS+ or XLS+ are preferred over simpler laboratory UV-radiation sources.
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ICH Testing of Pharmaceuticals – Part 2 - Sample Preparation

December 20, 2021 | Dr. Oliver D Rahaeuser

Applications

In an earlier post, we discussed the basic ICH Q1B requirements. We saw that the SUNTEST provides great speed of testing, and we also discussed the often-heard statement of UV “over-exposure”. In this post, we will discuss the matter of sample preparation by looking at three simple but important examples.
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ICH Testing of Pharmaceuticals – Part 1 - Exposure Conditions

December 13, 2021 | Dr. Oliver D Rahaeuser

Applications

The FDA (American Food & Drug Administration) requires that all new drugs be tested for shelf life by exposing drugs to simulated sunlight. The international ICH guidelines define appropriate light sources and provides test guidelines. The guidelines Q1B state that drugs must be exposed to a minimum of 1.2 million lux-hours of visible light and a minimum of 200 W·h/m2 UVA light. These tests are also referred to as Confirmatory Studies.
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SUNTEST CPS+ and its Role in Drug and Doping Studies

November 15, 2021 | Dr. Oliver D Rahaeuser

Applications

Hair analysis is a valuable tool in clinical and forensic toxicology to reveal drug and/or doping abuse and single dose consumption. Studies often stand in the context of crimes, doping controls, or workplace drug testing with a large window from weeks to months for drug detection.
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