ASTM D7768-2012 (2018) standard test method specifies the use of Gas chromatography, CG to determine the content of organic volatiles (VOCs) in aqueous multi-component coatings. This method uses gas chromatograph technology to accurately analyze the content of different types of organic volatiles in aqueous multi-component coatings, which helps to evaluate the environmental performance of coatings, especially in reducing vocs emissions. The standard details sample preparation, instrument settings, test procedures and Data analysis methods to ensure the accuracy and repeatability of results. This test method is widely used in the Coating industry to help manufacturers control VOC emissions, comply with environmental regulations, and promote the development and application of green Coatings.