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If you need to learn more about gloss measurement or need help with testing to ASTM standards, consult relevant industry professionals or resources.
3.1 : The ratio of the specularly reflected light to the incident light, measured at a specified angle.
4.1 Gloss is a measure of the surface's ability to reflect light. A high-gloss surface appears shiny and reflective, while a low-gloss surface appears dull or matte. 4.2 The measurement of specular gloss is useful for evaluating the appearance of painted surfaces.
11.1 The precision of this test method has been determined.