This standard specifies the performance test method of Thermal conductivity detector, TCD for gas chromatograph, applicable to Thermal conductivity detector, TCD using filaments or thermal elements. The standard covers a comprehensive test of Detector performance to ensure its accuracy and Stability in gas chromatograph analysis. The test method is based on standardized procedures and is suitable for thermal conductivity measurement during gas separation and analysis. The standard refers to relevant operating specifications and safety standards, but does not deal with safety issues during actual use. Users should test and operate on the basis of compliance with safety specifications.