Лако-красочные материалы — производство

If the gray paste method is used to determine the lightening power (for standards, see Table 1.1, “Lightening power of white pigments”), the concentration at which the white pigment should be assessed has to be agreed between the intended parties in accordance with the type of application [1.54]. This process is especially recom­mended for the routine testing of pigments because the lightening power, the relative scattering power (see below), and the undertone can be determined with the same gray milling paste of the test pigment.

The method can be rationalized by means of the Kubelka-Munk theory. For stan­dards, see Table 1.1 (“Tinting strength, relative: Photometric”).

1.3.3.3