GB/T 6753.1-2007 Determination of fineness of ground for Paints, varnish and Printing ink is equivalent to ISO 1524:2000, replacing the GB/T 6753.1-1986 edition. This standard applies to the determination of fineness of ground for Paints, varnish and Printing ink, covering the detection of products such as liquid Paints and varnish. Compared with the old version, it adds a new scope of application and eliminates some old requirements, such as Fineness Gauge with a range of 0-15 μm. The standard specifies the determination method using different specifications of Fineness Gauge and emphasizes the importance of sample handling and test environment. Through this standard, the fineness of grinding can be accurately evaluated, which is of guiding significance for ensuring product mass.