This standard specifies the limit standards for triazine impurities in fluorescent whitening agents for detergents and their determination methods. The standard applies to the quality control of fluorescent whitening agents for detergents to ensure that the content of triazine impurities in products meets the specified mass requirements. The specific limits for triazine impurities are shown in Appendix A. The standard also details the test methods and inspection requirements, including the use of analytically pure reagents and primary water, and the determination of results according to the numerical revision rules. Relevant normative reference documents include "Specifications and test methods for water use in analytical laboratories" and "Representation and determination of numerical revision rules and limit values".