The ISO/FDIS 1524-2012 standard specifies methods for determining the fineness of grinding for coatings, varnishes and Printing inks, with the aim of assessing the degree of dispersion of particles or aggregates in these materials. The standard details the operation steps for using fineness of grinding meters, including equipment specifications, sample preparation, test process and result evaluation, to ensure the accuracy and conformity of test data. The determination of fineness of grinding is an important part of quality control, which directly affects the smoothness, coverage and application performance of coatings and inks. This standard is applicable to production, laboratory and mass testing scenarios and provides a scientific basis for the performance verification of Coatings and inks products.