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ASTM D2457-97 Standard Test Method for Specular Gloss of Plastic Films and Solid Plastics
standard by ASTM International, 01/10/1997
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1.1 This test method describes procedures for the measurement of gloss of plastic films and solid plastics, both opaque and transparent. It contains three 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, and
1.1.3 45-deg, recommended for intermediate and low-gloss films.
Note 1-The 60-deg and 20-deg apparatus and method of measurement duplicate those in Test Method D 523; those for the 45