意义及用途

4.1 Vision The main purpose of the Pt-Co color measurement method is to assess the yellowness of a specific material. The yellow color is usually the result of the undesired tendency of liquid hydrocarbons to absorb blue light due to pollution during processing, 贮存, or transportation.

ASTM D8005-2018 透明液体颜色的标准测试方法 (铂钴标尺)

步 1: 范围

1.1 This test method includes a procedure for visual determination of the color of a transparent liquid at close range. It applies only to materials where the object in which the color is produced has light absorption properties that are nearly identical to the platinum-cobalt (Pt-Co) color standard used.

1.2 This test method is applicable to the color measurement of transparent liquid samples without fog, and the nominal Pt-Co color value is between 0 和 100. Suitable for non-fluorescent liquids with light absorption properties similar to Pt. – Color standard solutions. Test methods D1209, D1686, and D5386 involve visual and instrumental measurements of near-transparent liquids.

1.3 When using this method to determine the consistency of test results with applicable specifications, the results should be rounded according to the rounding method of Practice E29.

1.4 以 SI 单位表示的值应视为标准值. 本标准不包含其他计量单位.

ASTM D8005-2018 透明液体颜色的标准测试方法 (铂钴标尺)

1.5 本标准并非旨在解决所有安全问题 (如果有的话) 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康和环境实践，并在使用前确定监管限制的适用性.

1.6 该国际标准基于国际公认的标准化原则 “关于国际标准制定原则的决定, 指南和建议” 世界贸易组织技术性贸易壁垒委员会发布 (技术性贸易壁垒).