The national standard GB/T 2423.17-2024 environmental testing Part 2: Test methods, test Ka: salt fog specifies a test method for evaluating the corrosion resistance of components, equipment and materials of electrical products in a salt fog environment. This method is suitable for verifying the state of corrosion-protected and unprotected metal materials after exposure to salt fog, and comparing the anti-salt fog corrosion performance of different materials or coatings. The standard details the configuration of salt solutions, pH value adjustment, filtrate, sexual repeability use, and requirements for test equipment such as test chambers, spray devices, air supply and collection devices. In addition, it also includes the pretreatment, placement, operating conditions, test duration and recovery process of the specimen. This standard will be implemented on March 1, 2025, replacing the GB/T 2423.17-2008 and equivalent to the IEC 60068-2-11:2021 international standard.