Astm D523 Pdf [iPad]

9.1 No calculations are required; the gloss value is read directly from the instrument.

5.1 : A glossmeter is used to measure the specular gloss. The instrument consists of a light source, a receptor (or detector), and a scale to read the gloss value. astm d523 pdf

8.1 The glossmeter is positioned on the test specimen, ensuring that the light source and receptor are at the specified angles (usually 20°, 60°, or 85°). 8.2 The gloss value is read directly from the glossmeter. such as painted metal

3.1 : The ratio of the specularly reflected light to the incident light, measured at a specified angle. measured at a specified angle.

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.