Astm D523 Pdf <Bonus Inside>
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.
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. astm d523 pdf
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. a receptor (or detector)
3.1 : The ratio of the specularly reflected light to the incident light, measured at a specified angle. astm d523 pdf
10.1 The gloss value is reported as a numerical value.
7.1 The test specimen shall be a flat, non-metallic painted surface.
6.1 The glossmeter shall be calibrated using a certified reference standard.
