1.1 This test method describes procedures for the measurement of gloss of plastic films and solid plastics, both opaque and transparent. It contains four separate gloss angles (Note 1): 1.1.1 60-deg, recommended for intermediate-gloss films, 1.1.2 20-deg, recommended for high-gloss films, 1.1.3 45-deg, recommended for intermediate and low-gloss films, 1.1.4 85-deg, recommended for intermediate and low gloss films, and 1.1.5 75-deg, recommended for plastic siding and soffit.
GSO ASTM D2457:2014 history
2014GSO ASTM D2457:2014 Standard Test Method for Specular Gloss of Plastic Films and Solid Plastics