This standard specifies the technical requirements and performance indicators for Salt Spray Testers to evaluate the corrosion resistance of materials and coatings in salt fog environments. The standard covers the design, manufacture and testing requirements of test chambers, including salt fog generators, spray systems, Control systems and environment monitoring. The test chamber should be able to provide stable salt fog spray conditions and have the function of monitoring and recording the test process to ensure the accuracy and Repeatability of the test. The purpose of this standard is to provide a uniform technical specification for the corrosion performance testing of materials and coatings, ensuring the Reliability and conformity of the test results.