The ISO 6270-2-2017 standard specifies test methods for evaluating the moisture resistance of coatings in a constant or alternating condensate environment. The standard aims to provide consistent test conditions and procedures for pre-prepared specimens to simulate the effects of wet environments on coatings in the real world. Tests are designed to detect defects that may occur in specimens under these environment conditions, in particular the corrosion resistance of coatings. The standard emphasizes the repeatability of test results, ensuring that tests in different laboratories can produce consistent results. In addition, detailed requirements on specimen preparation, test conditions and evaluation of results are included in the standard to ensure the scientific and practical nature of the tests.