Various types of solid material must be ground into a fine particles to be dispersed in the fluid equipment, the physical properties of the final dispersion is usually called the "fineness".

It not only depending on the actual size of the individual particles, and also vary depending on the quantity they are dispersed. The Fineness of Grind Gauge can be used for checking the particle size and the fineness of grind . The use of fineness gauge  is  to indicate the presence of coarse particles or aggregated particles in the dispersion.,it not for inspection the sze and the dispersion of the particles.

The fineness of grind gauge is produced strictly in accordance with GB / T 1724, GB/T6753.1, ISO1524 and other standards. It used to measure the particle size and dispersion for coating ,paint , lacquer paste, ink ,other liquid and paste pigment. And control the quality of the dispersion product during production ,storage and usage. This gauge is widely use in many field such as painting ,plastic ,pigment ,printing ink, paper ,ceramics, medicine, food and other field.

The fineness of grind gauge have groove on the surface of the flat steel block.The depth of the groove variate from one end maximum value  to the other end zero value. Scale one or more of the groove depth on the steel block to read and meaure the particle size.

The level of dispersion indicated by microns or Hegman , the Hegman value will gradually change from 0-8 with the particle size getting smaller.

0 Hegman = 100 micron particle size; 4 Hegman = 50 micron particle size; 8 Hegman = 0 micron particle size.