The JIS K 5600-2-5 standard specifies the test method for Coating fineness of grind, which is used to evaluate the particle distribution and uniformity of Coating. The standard is applicable to various types of Coating products and describes in detail the test equipment (e.g. Grindometer), test operation procedures, result recording and evaluation methods. By measuring the fineness of grind, the dispersion effect and coating performance of Coating can be judged, providing a scientific basis for Coating formulation optimization, production quality control and product performance evaluation. JIS K 5600-2-5 is an important technical standard in the Coating industry, which helps to improve product development and market competitiveness.