ASTM D6886-2014E1 standard test method specifies the use of Gas chromatography, CG to determine the weight percentage of individual vocs (VOCs) in water-based air-dried coatings. This method is suitable for analyzing the composition of vocs in water-based paints to help evaluate the environmental performance of coatings and their VOC emission levels. The standard details Gas chromatography, CG operating procedures, Sample Handling, instrument settings, and Data analysis requirements to ensure the accuracy and repeatability of measurement results. Through this test method, the content of harmful substances in Coating products can be effectively controlled, the research and development and application of low-VOC coatings can be promoted, and the green development of the Coating industry can be promoted.