ASTM C1510-01(2016)

Standard Test Method for Color and Color Difference of Whitewares by Abriged Spectrophotometry

SIGNIFICANCE AND USE
5.1 The most direct and accessible methods for obtaining the color coordinates of ceramic glazes and related whitewares are by instrumental measurement using spectrophotometers or colorimeters with either hemispherical or bidirectional optical measuring systems. This test method provides procedures for such measurement by reflectance spectrophotometry using a hemispherical optical measuring system.  
5.2 This test method is especially suitable for measurement of the following types of specimens for the indicated uses(See Practice E805.):  
5.2.1 All types of ceramic glaze and related whiteware specimens to obtain data for use in computer colorant formulation.  
5.2.2 Ceramic glaze and related whiteware specimens for color assessment.
5.2.2.1 For the measurement of plane-surface high-gloss specimens, the specular component should generally be excluded during the measurement.
5.2.2.2 For the measurement of plane-surface intermediate-gloss (satin) specimens, where the first-surface reflection component may be distributed over a wide range of angles, measurement may be made with the specular component included, but the resulting color coordinates may not correlate best with visual judgments of the color. Measurement with specular excluded may lead to better correlations.
5.2.2.3 For the measurement of plane-surface, low-gloss (matte) specimens, the specular component may either be excluded or included, as no significant difference in the results should be apparent.  
5.3 An estimate of gloss may be obtained by measuring the reflection both with the specular component of reflection included and excluded, and then calculating the difference between the two measurements at several wavelengths across the visible spectrum, as described in 10.2.
SCOPE
1.1 This test method describes the instrumental measurement of the reflection properties and color of ceramic glazes and other whitewares by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an integrating sphere.  
1.2 The test method is suitable for use with most specimens having an exterior flat surface large enough to cover the spectrophotometer sample port.  
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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2016
• ICS: 71.040.50 - Physicochemical methods of analysis
• Technical Committee: C21 - Ceramic Whitewares and Related Products
• Drafting Committee: C21.03 - Methods for Whitewares and Environmental Concerns

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1510 − 01 (Reapproved 2016)
Standard Test Method for
Color and Color Difference of Whitewares by Abriged
1
Spectrophotometry
This standard is issued under the fixed designation C1510; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E1331 Test Method for Reflectance Factor and Color by
Spectrophotometry Using Hemispherical Geometry
1.1 This test method describes the instrumental measure-
ment of the reflection properties and color of ceramic glazes
3. Terminology
and other whitewares by the use of a spectrophotometer or
3.1 Definitions:
spectrocolorimeter with a hemispherical optical measuring
system, such as an integrating sphere. 3.1.1 The definitions in Guide E179, Terminologies C242
and E284, and Practice E1164 are applicable to this test
1.2 The test method is suitable for use with most specimens
method.
having an exterior flat surface large enough to cover the
spectrophotometer sample port.
4. Summary of Test Method
1.3 This standard does not purport to address all of the
4.1 This test method provides a procedure for measuring the
safety concerns, if any, associated with its use. It is the
reflectance factors of reflecting ceramic glazes or related
responsibility of the user of this standard to establish appro-
whiteware specimens by using a spectrophotometer or spec-
priate safety and health practices and determine the applica-
trocolorimeter equipped with a hemispherical optical measur-
bility of regulatory limitations prior to use.
ing system such as an integrating sphere. (See Test Method
E1331.)
2. Referenced Documents
2
4.2 This test method includes procedures for calibrating the
2.1 ASTM Standards:
instrument and for selecting specimens suitable for precision
C242 Terminology of Ceramic Whitewares and Related
measurement.
Products
D2244 Practice for Calculation of Color Tolerances and
4.3 Most modern spectrophotometers have the capacity to
Color Differences from Instrumentally Measured Color
compute the color coordinates of the specimen immediately
Coordinates
following the measurement. When this is the case, the user
E179 Guide for Selection of Geometric Conditions for
must select the color system, observer, and illuminant (Practice
Measurement of Reflection and Transmission Properties
E308, Section 6).
of Materials
E284 Terminology of Appearance
5. Significance and Use
E308 PracticeforComputingtheColorsofObjectsbyUsing
5.1 The most direct and accessible methods for obtaining
the CIE System
the color coordinates of ceramic glazes and related whitewares
E805 Practice for Identification of Instrumental Methods of
are by instrumental measurement using spectrophotometers or
Color or Color-Difference Measurement of Materials
colorimeters with either hemispherical or bidirectional optical
E1164 PracticeforObtainingSpectrometricDataforObject-
measuring systems. This test method provides procedures for
Color Evaluation
such measurement by reflectance spectrophotometry using a
hemispherical optical measuring system.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC21onCeramic
5.2 This test method is especially suitable for measurement
Whitewares and Related Productsand is the direct responsibility of Subcommittee
of the following types of specimens for the indicated uses(See
C21.03 on Methods for Whitewares and Environmental Concerns.
Practice E805.):
Current edition approved Nov. 1, 2016. Published November 2016. Originally
5.2.1 All types of ceramic glaze and related whiteware
approved in 2001. Last previous edition approved in 2012 as C1510 – 01 (2012).
DOI: 10.1520/C1510-01R16.
specimens to obtain data for use in computer colorant formu-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
lation.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.2.2 Ceramic glaze and related whiteware specimens for
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. color assessment.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1510 − 01 (2016)
5.2.2.1 For the measurement of plane-surface high-gloss datory). This should be done every time the instrument is
specimens, the specular component should generally be ex- started up. Follow the instrument manufacturer’s instructions.
cluded during the measurement.
8.4 Verifytheaccuracyoftheinstrumentaldatabymeasure-
5.2.2.2 For the measurement of plane-surface intermediate-
ment of a series of verification standards (recommended
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1510 − 01 (Reapproved 2012) C1510 − 01 (Reapproved 2016)
Standard Test Method for
Color and Color Difference of Whitewares by Abriged
1
Spectrophotometry
This standard is issued under the fixed designation C1510; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method describes the instrumental measurement of the reflection properties and color of ceramic glazes and other
whitewares by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an
integrating sphere.
1.2 The test method is suitable for use with most specimens having an exterior flat surface large enough to cover the
spectrophotometer sample port.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
C242 Terminology of Ceramic Whitewares and Related Products
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
E805 Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation
E1331 Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
3. Terminology
3.1 Definitions:
3.1.1 The definitions in Guide E179, Terminologies C242 and E284, and Practice E1164 are applicable to this test method.
4. Summary of Test Method
4.1 This test method provides a procedure for measuring the reflectance factors of reflecting ceramic glazes or related whiteware
specimens by using a spectrophotometer or spectrocolorimeter equipped with a hemispherical optical measuring system such as
an integrating sphere. (See Test Method E1331.)
4.2 This test method includes procedures for calibrating the instrument and for selecting specimens suitable for precision
measurement.
4.3 Most modern spectrophotometers have the capacity to compute the color coordinates of the specimen immediately
following the measurement. When this is the case, the user must select the color system, observer, and illuminant (Practice E308,
Section 6).
1
This test method is under the jurisdiction of ASTM Committee C21 on Ceramic Whitewares and Related Productsand is the direct responsibility of Subcommittee C21.03
on Methods for Whitewares and Environmental Concerns.
Current edition approved April 1, 2012Nov. 1, 2016. Published April 2012November 2016. Originally approved in 2001. Last previous edition approved in 20072012 as
C1510–01(2007).C1510 – 01 (2012). DOI: 10.1520/C1510-01R12.10.1520/C1510-01R16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1510 − 01 (2016)
5. Significance and Use
5.1 The most direct and accessible methods for obtaining the color coordinates of ceramic glazes and related whitewares are
by instrumental measurement using spectrophotometers or colorimeters with either hemispherical or bidirectional optical
measuring systems. This test method provides procedures for such measurement by reflectance spectrophotometry using a
hemispherical optical measuring system.
5.2 This test method is especially suitable for measurement of the following types of specimens for the indicated uses(See
Practice E805.):
5.2.1 All types of ceramic glaze and related whiteware specimens to obtain data for use in computer colorant formulation.
5.2.2 Ceramic glaze and related whiteware specimens for color assessment.
5.2.2.1 For the measurement of plane-surface high
...