1.1本试验方法描述了不透明和透明塑料薄膜和固体塑料光泽的测量程序。它包含三个单独的光泽角度（注1）: 1.1.1 60度，建议用于中等光泽薄膜， 1.1.2 20度，建议用于高光泽薄膜，以及 1.1.3 45度，建议用于中等光泽和低光泽薄膜。 注1-60度和20度的仪器和测量方法与试验方法D 523中的仪器和测量方法相同；45°程序的试验方法类似地取自试验方法C 346。 1.2本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 注2-没有类似或等效的ISO标准。

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° procedure are similarly taken from Test Method C 346. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 2- There is no similar or equivalent ISO standard.