The ICH Light Stability Test Standard is used to evaluate the Stability of pharmaceutical raw materials and preparations under light conditions, providing information on their mass variation under the influence of different environmental factors (Temperature, Humidity, Light). These tests help determine the retest date or shelf life of the drug and recommended storage conditions. The Q-SUN xenon arc test chamber can simulate the light conditions in direct sunlight or through window Glass to ensure the accuracy and repeatability of test results.