GB/T 36908-2018 "Limits and Determination of Allergenic Dyes in Dye Products" applies to dye products, specifying the limit requirements and determination methods for allergenic dyes. Suitable solvents are used to extract allergenic dyes from the samples, which are then separated and purified before detection using appropriate analytical instruments. The method employs retention time for qualitative analysis and the external standard method for quantitative analysis. It specifies the detection limits and limit indicators, clarifies the operational steps and criteria for result determination, providing a unified basis for the safety and compliance testing of dye products.