ASTM D6290-05
Historical Standard: ASTM D6290-05 Standard Test Method for Color Determination of Plastic Pellets
SUPERSEDED (see Active link, below)
ASTM D6290
1. Scope
1.1 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.
1.2 This test method is applicable to the color analysis of plastic pellets. Each material may have unique characteristics that determine the color values.
1.3 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*.
1.4 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 1There is no equivalent ISO Standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D883 Terminology Relating to Plastics
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
E179 Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E313 Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1331 Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45:0 or 0:45) Geometry
Keywords
color; pellets; plastics; yellowness; yellowness index; Color--plastics; Daylight; Instrumental measurement--plastics; Pellets; Yellowness index ;
ICS Code
ICS Number Code 17.180.20 (Colours and measurement of light); 83.080.01 (Plastics in general)
DOI: 10.1520/D6290-05
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