Astm D523 Pdf May 2026

11.1 The precision of this test method has been determined.

10.1 The gloss value is reported as a numerical value. 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 high-gloss surface appears shiny and reflective, while

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. non-metallic painted surface.

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

6.1 The glossmeter shall be calibrated using a certified reference standard.

7.1 The test specimen shall be a flat, non-metallic painted surface.