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ASTM E313 - 20
Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates
| Fecha edición: |
2020-05-01
Anulada
|
|---|---|
| Fecha cancelación: | 2020-05-01 |
| Idiomas disponibles: | Inglés |
| Resumen: | |
| Keywords: | color; colorimetric analysis; color/light; instrumental measurement; reflectance; reflectivity; whiteness indexes; yellowness indexes; |
| Scope: | 1.1 This 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. 1.2 For 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). 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This 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. |
| ICS: | 17.180.20 - Colores y medición de luz |
| CTN: | E12.04 - E12.04 |
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Otras Relaciones |
Es referenciada por D4101 - 24 Es referenciada por D5146-10R19 Es referenciada por D4960-20 Es referenciada por D4020-18 Es referenciada por D8087-18 Es referenciada por D7133-21 Es referenciada por D6290-19 Es referenciada por D7942-15R23 Es referenciada por G0178-16R23 Es referenciada por F0942-18R23E01 Es referenciada por E0805-22 Es referenciada por E0308-22 Es referenciada por D3730-17R22 Es referenciada por D6763-16R22 Es referenciada por E1247 - 12(2023) Es referenciada por E284 - 25 Es referenciada por D5237 - 14(2024) Es referenciada por D4008 - 19(2024) Es referenciada por C1900 - 24 Es referenciada por D8584 - 24 |










