ASTM E 313 : 2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates
English
01-05-2020
18-05-2020
| Committee |
E 12
|
| DocumentType |
Standard Practice
|
| Pages |
7
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1This practice provides numbers that correlate with visual ratings of yellowness or whiteness of white and near-white or colorless object-color specimens, viewed in daylight by an observer with normal color vision. White textiles, paints, and plastics are a few of the materials that can be described by the indices of yellowness or whiteness calculated by this practice.
1.2For a complete analysis of object colors, by a specified observer and under a specified illuminant, use of three parameters is required. For near-white specimens, however, it is often useful to calculate single-number scales of yellowness or whiteness. This practice provides recommended equations for such scales and discusses their derivations and uses, and limits to their applicability (see also Ref (1)2).
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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| ASTM E 991 : 2021 | Standard Practice for Color Measurement of Fluorescent Specimens Using the One-Monochromator Method |
| ASTM E 308 : 2022 | Standard Practice for Computing the Colors of Objects by Using the CIE System |
| ASTM D 1535 : 2014 : R2023 | Standard Practice for Specifying Color by the Munsell System |
| ASTM E 1345 : 2024 | Standard Practice for Reducing the Effect of Variability of Color Measurement by Use of Multiple Measurements |
| ASTM E 284 : 2025 | Standard Terminology of Appearance |
| ASTM E 1349 : 2006 : R2018 | Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry |
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