Pigment is a material that changes its color of transmitted or reflected light according to the wavelength of material selective absorption. This physical process is totally different from phosphorescence, fluorescence, and other types of luminescence, in which a material emits light. Many products selectively absorb a certain wavelength of light. Materials that humans have chosen and developed for using a pigment usually have special properties that make the products ideal for coloring other materials.
Pigments have high tinting strength, and it is stable in solid form at normal temperatures. Pigments are used in various products such as ink, paint, for coloring plastic, cosmetics, food and so forth. Most of the pigments that are used in manufacturing and visual arts are dry colorants that are finally converted into fine powders. This powder is further converted into fine powder.
Presto Stantest, a renowned name in the world of testing instruments, offers a wide range of Pigments testing machines that are used to measure the quality of the pigments. The testing instruments are designed as per the standards that are provided by various standardization authorities such as ASTM, ISO, BIS, etc. The instrument offers reliable test results.