The ISO 9022-7:2015 standard specifies a test method for the tolerance of opticalin struts in drip or rain-proof environments. The standard aims to assess the performance of opticalin struts and their components in simulated drip or rain conditions, ensuring that they can effectively resist the effects of these environmental factors without reducing performance in actual use. Testing involves evaluating the Optical inspection, climate, mechanical, chemical and electrical performance of the instrument to determine its Reliability in the face of moisture intrusion. The standard, part of the ISO 9022 series, provides detailed test methods and guidance for the performance evaluation of opticalin struts in a variety of environments.