When matting agents are used, it is necessary to measure the fineness or Hegmann value of the coating to obtain information on the degree of dispersion. Furthermore, we can control the gloss in the 60 ° range.

From the main parameters mentioned above, we can see that the gloss of the product must be controllable. In addition, measuring the gloss of 60 ° and 85 ° is necessary for our further understanding of the extinction. Since there is no rule for comparison with common coating systems, as an acceptable method, the particle size value can sometimes be defined. The fineness can usually be greater than 25 microns, such as silica matting agents. Decreasing the particle size value will reduce the matting effect and increase the gloss. Stickiness and transparency (for varnishes, photosensitive coatings) must also be controlled to a relatively standard range.