ANSI/ASTM D6290-1998 塑料托盘颜色测定的试验方法

标准号：ANSI/ASTM D6290-1998
中文标准名称：塑料托盘颜色测定的试验方法
英文标准名称：Test Method for Color Determination of Plastic Pellets
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1998/8/17 12:00:00
中国标准分类号：G31
国际标准分类号：17.180.20;83.080.01
适用范围： This test method is intended primarily for the instrumental measurement of the degree of yellowness (or change of degree of yellowness) under daylight illumination of homogeneous, nonfluorescent, nearly-colorless transparent or nearly-white translucent or opaque plastics. The measurement is made on pellets and based on tristimulus values obtained with a spectrophotometer or colorimeter. This test method is applicable to the color analysis of plastic pellets. Each material may have unique characteristics that determine the color values. This procedure outlines a method to determine color measurements, such as Yellowness Index, CIE X, Y, Z, and Hunter L, a, b, or CIE L , a , b . 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 1 -There is no equivalent ISO Standard.