The ISO 9022-9:2015 "Optical inspection and opticalin strument environmental test methods, Part 9: solar radiation and weathering" standard specifies the test methods for opticalin strument in simulated solar radiation and weathering environments. The standard aims to evaluate the change in performance of instruments and their components under environmental conditions exposed to solar radiation, heat and moisture. Light, heat and Humidity in actual use are simulated through laboratory tests to understand the impact of these factors on Optical inspection, climate, mechanical, chemical and electrical performance. Testing is designed to ensure that the opticalin strument can withstand these environment challenges and maintain stable performance and Reliability over the long term.