"SN/T 1802-2014 Determination of ethylene glycol ethers and their esters in interior paints Gas chromatography, CG" specifies the determination method of ethylene glycol methyl ether, ethylene glycol ether, ethylene glycol methyl ether acetate, ethylene glycol ether acetate and diethylene glycol butyl ether acetate in interior paints. The standard is confirmed by solvent ultrasonic extraction, GC-FID detection and GC-MS. Quantitative analysis of target substances in Coatings is carried out by external standard method to ensure the accuracy and Reliability of determination. The standard covers the required reagents and materials, such as methanol, ethyl acetate and other solvents, as well as the preparation methods of standards and mixed standard working fluids. In addition, the standard also details the requirements for instruments and equipment for analysis, including Balance, Gas Chromatograph, GC-MS, ultrasonic cleaners, and high-speed Centrifuges, to support experimental operations during analysis.