The standard describes a practical approach to modified salt spray testing for ferrous metals, non-ferrous metals, and organic and Inorganic Coatings. The standard specifies five modification conditions for salt spray testing, including acetic acid spray, cyclic acidification salt fog, seawater acidification test, cyclic salt spray test, and dilute electrolysis solution cyclic fog drying test. These modification methods are used to simulate a more corrosive environment than traditional salt spray testing (as described in B117). The standard does not specify the type of modification, specimen, or exposure period for a particular product, and does not interpret the results. It provides a flexible method for assessing the corrosion resistance of materials.