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ASTM D2244-93(2000)

Current Reaffirmation

Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

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1.1 This test method covers the calculation, from instrumentally measured color coordinates based on daylight illumination, of small color differences between nonfluorescent, nonmetameric, opaque specimens such as painted panels. (Where it is suspected that the specimens may be metameric, that is, possess different spectral curves though visually alike in color, Practices D1729 and D4086 should be used to verify instrumental results.) The color differences determined by these procedures are expressed in terms of approximately uniform visual color perception in CIE 1976 CIELAB opponent-color space (1), Hunter LH,aH, bH opponent-color space (2), and the Friele-MacAdam-Chickering (FMC-2) color space (3).

1.2 For product specification, the permissible color difference between test specimen and reference and the procedure for calculating the color difference shall be agreed upon by the purchaser and the seller. Specific color tolerances may be required for each material and condition of use since other appearance factors (for example, proximity, gloss, and texture) may affect the correlation between the magnitude of a measured color difference and its commercial acceptability.

1.3 This standard does not purport to address all of the safety problems, 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.


SDO ASTM: ASTM International
Document Number D2244
Publication Date July 10, 2000
Language en - English
Page Count 5
Revision Level 93(2000)
Supercedes
Committee E12.04
Publish Date Document Id Type View
June 1, 2023 D2244-23 Revision
Oct. 1, 2022 D2244-22 Revision
June 1, 2021 D2244-21 Revision
July 1, 2016 D2244-16 Revision
Aug. 1, 2015 D2244-15A Revision
Jan. 1, 2015 D2244-15E01 Revision
Jan. 1, 2015 D2244-15 Revision
May 1, 2014 D2244-14 Revision
June 1, 2011 D2244-11 Revision
Dec. 1, 2009 D2244-09B Revision
Aug. 1, 2009 D2244-09A Revision
July 1, 2009 D2244-09 Revision
May 1, 2007 D2244-07E01 Revision
May 1, 2007 D2244-07 Revision
Oct. 1, 2005 D2244-05 Revision
June 10, 2002 D2244-02E01 Revision
June 10, 2002 D2244-02 Revision
July 10, 2000 D2244-93R00 Reaffirmation