This standard specification provides a method for assessing the capability of Encasement systems to climate stress in a laboratory, covering temperature and Humidity variations in different climate conditions around the globe. The test method simulates climate conditions in transport, handling and storage to ensure that Encasement systems can effectively protect products from damage in the real environment. The method is suitable for assessing the performance of Encasement systems in single parcel delivery, focusing mainly on short-term climate regulation, excluding refrigeration or freezing conditions. Users are cautioned that these conditions are not suitable for long-term storage or extreme climate environments. The standard does not address all safety issues and appropriate safety and health measures need to be taken before use.