7.1 The test specimen shall be a flat, non-metallic painted surface.
(Optional)
9.1 No calculations are required; the gloss value is read directly from the instrument. astm d523 pdf
1.1 This test method covers the measurement of the specular gloss of non-metallic painted surfaces only, such as painted metal, plastic, and wood. 1.2 This test method is designed to measure the specular gloss of surfaces at specified angles of illumination and view. such as painted metal
If you need to learn more about gloss measurement or need help with testing to ASTM standards, consult relevant industry professionals or resources. consult relevant industry professionals or resources.