This standard specifies the method for determining the particle size of Glass raw materials, which is suitable for powdery raw materials used in Perry. According to the particle size of the sample, the test sieve and the vibrating sieve machine are used to sieve the sample, and the yield of each grain grade is calculated by weighing it with Balance. The required equipment includes the test sieve, vibrating sieve machine and Balance. The sample preparation includes drying, shrinking and weighing. The measurement steps include the sample weighing, sieving, weighing and recording the results.