ASTM D5531-94(2003)
(Guide)Standard Guide for Preparation, Maintenance, and Distribution of Physical Product Standards for Color and Geometric Appearance of Coatings
Standard Guide for Preparation, Maintenance, and Distribution of Physical Product Standards for Color and Geometric Appearance of Coatings
SCOPE
1.1 This guide covers three levels of physical product standards for color commonly used in the coatings industry, provides terminology to describe each level, and describes techniques for generating standards.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
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Designation:D5531–94(Reapproved2003)
Standard Guide for
Preparation, Maintenance, and Distribution of Physical
Product Standards for Color and Geometric Appearance of
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Coatings
This standard is issued under the fixed designation D5531; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope E430 Test Methods for Measurement of Gloss of High-
2
Gloss Surfaces by Goniophotometry
1.1 This guide covers three levels of physical product
E805 PracticeforIdentificationofInstrumentalMethodsof
standards for color commonly used in the coatings industry,
2
Color or Color-Difference Measurement of Materials
provides terminology to describe each level, and describes
E1164 Practice for Obtaining Spectrophotometric Data for
techniques for generating standards.
2
Object-Color Evaluation
1.2 The values stated in SI units are to be regarded as the
E1331 Test Method for Reflectance Factor and Color by
standard. The values given in parentheses are for information
2
Spectrophotometry Using Hemispherical Geometry
only.
E1345 Practice for Reducing the Effect of Variability of
1.3 This standard does not purport to address all of the
2
Color Measurement by Use of Multiple Measurements
safety concerns, if any, associated with its use. It is the
E1347 Test Method for Color and Color-Difference Mea-
responsibility of the user of this standard to establish appro-
2
surement by Tristimulus (Filter) Colorimetry
priate safety and health practices and determine the applica-
E1349 Test Method for Reflectance Factor and Color by
bility of regulatory limitations prior to use.
2
Spectrophotometry Using Bidirectional Geometry
2. Referenced Documents
2.2 Society of Automotive Engineers Standard:
SAE J1545 Recommended Practice for Instrumental Color
2.1 ASTM Standards:
Difference Measurement for Exterior Finishes, Textiles,
D16 Terminology for Paint, Related Coatings, Materials
3
2
and Colored Trim
and Applications
2
D523 Test Method for Specular Gloss
3. Terminology
D823 Practices for Producing Films of Uniform Thickness
2
3.1 The definitions in Terminology E284 and D16 are
of Paint, Varnish, and Related Products on Test Panels
applicable to this test method. The terms in E284 take
D1729 Practice for Visual Appraisal of Colors and Color
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precedence over those in D16 if there are differences.
Differences of Diffusely-Illuminated Opaque Materials
3.2 Definitions of Terms Specific to This Standard:
D2244 Practice for Calculation of Color Tolerances and
3.2.1 concept color, n—the color of the material submitted
Color Differences from Instrumentally Measured Color
2 by the customer as the target for generating the master
Coordinates
standard.
D3134 Practice for Establishing Color and Gloss Toler-
2 3.2.2 master standard, n—the physical standard for color
ances
2
that the customer approves as the target for visual, spectropho-
D4086 Practice for Visual Evaluation of Metamerism
tometric,andcolorimetricevaluationofallproductsreferenced
D4449 Test Method for Visual Evaluation of Gloss Differ-
2
to that standard.
ences Between Surfaces of Similar Appearance
2
3.2.2.1 Discussion—in SAE J1545 this is referred to as the
E284 Terminology of Appearance
“official” standard.
E308 Practice for Computing the Colors of Objects by
2
3.2.3 duplicate master standard, n—a replicate of the mas-
Using the CIE System
ter standard that serves as the master standard at a secondary
location.
1 3.2.3.1 Discussion—in SAE J1545 this is referred to as the
This guide is under the jurisdiction of ASTM Committee D01 on Paint and
“reference” standard.
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.26 on Optical Properties.
Current edition approved May 10, 2003. Published June 2003. Originally
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approved in 1994. Last previous edition approved in 1994 as D5531-94(1999). Available from Society of Automotive Engineers (SAE), 400 Commonwealth
2
Annual Book of ASTM Standards, Vol 06.01. Dr., Warrendale, PA 15096-0001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5531–94 (2003)
3.2.4 working standard, n—the physical product standard introduction of metamerism between the two dissimilar mate-
forcolorusedforroutinemeasurementsandvisualassessments rials far outweighs any possible permanence gains.”
in the laboratory and at the production site.
7. Three Levels of Physical Product Standards for Color
4. Summary of Guide
7.1 Theconceptcolorsubmittedbythecustomershouldnot
4.1 Product standards are the only stan
...
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