ASTM D1544-04(2010)

Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)

SIGNIFICANCE AND USE
This test method applies to drying oils, varnishes, fatty acids, polymerized fatty acids, and resin solutions. Its application to other materials has not been tested.
SCOPE
1.1 This test method covers the measurement of the color of transparent liquids by means of comparison with arbitrarily numbered glass standards.
1.2 Users of this method should have normal color vision.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2010
• ICS: 17.180.20 - Colours and measurement of light
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.26 - Optical Properties

Relations

• Replaces: ASTM D1544-04 - Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
• Effective Date: 01-Jun-2010
• Referred By: ASTM D1763-00(2021) - Standard Specification for Epoxy Resins
• Effective Date: 01-Jun-2010
• Referred By: ASTM D4142-89(2022) - Standard Guide for Testing Epoxy Resins
• Effective Date: 01-Jun-2010
• Referred By: ASTM D3837-95(2019) - Standard Practice for Preparing a Solution of Alkali–Soluble Resins
• Effective Date: 01-Jun-2010
• Referred By: ASTM D1981-11(2020)e1 - Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• Effective Date: 01-Jun-2010
• Referred By: ASTM F624-09(2015)e1 - Standard Guide for Evaluation of Thermoplastic Polyurethane Solids and Solutions for Biomedical Applications
• Effective Date: 01-Jun-2010
• Referred By: ASTM D803-15(2020) - Standard Test Methods for Testing Tall Oil
• Effective Date: 01-Jun-2010
• Referred By: ASTM D509-20 - Standard Test Methods of Sampling and Grading Rosin
• Effective Date: 01-Jun-2010
• Referred By: ASTM D8515-23 - Standard Test Method for Color of Rosin in Solution (Instrumental Determination of Gardner Color)
• Effective Date: 01-Jun-2010
• Referred By: ASTM C1315-19 - Standard Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete
• Effective Date: 01-Jun-2010
• Referred By: ASTM E805-22 - Standard Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
• Effective Date: 01-Jun-2010
• Referred By: ASTM C40/C40M-20 - Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
• Effective Date: 01-Jun-2010
• Referred By: ASTM D333-01(2021) - Standard Guide for Clear and Pigmented Lacquers
• Effective Date: 01-Jun-2010
• Referred By: ASTM D564-87(2023) - Standard Test Methods for Liquid Paint Driers
• Effective Date: 01-Jun-2010
• Referred By: ASTM D1045-19 - Standard Test Methods for Sampling and Testing Plasticizers Used in Plastics
• Effective Date: 01-Jun-2010

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:D1544 −04(Reapproved 2010)
Standard Test Method for
Color of Transparent Liquids (Gardner Color Scale)
This standard is issued under the fixed designation D1544; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope in use today do not conform to the values reported in Table 1.
The calibration of glass standards should be verified prior to
1.1 Thistestmethodcoversthemeasurementofthecolorof
use; a suitable procedure for their calibration is contained in
transparent liquids by means of comparison with arbitrarily
Appendix X1.
numbered glass standards.
4.2 Glass Tubes, clear, 10.65 mm in inside diameter and
1.2 Users of this method should have normal color vision.
about 114 mm in outside length. (Viscosity tubes, as described
1.3 The values stated in SI units are to be regarded as
in Test Method D1545, are satisfactory.)
standard. No other units of measurement are included in this
4.3 Suitable apparatus for comparing sample and standard.
standard.
The apparatus may be of any design, but should have the
1.4 This standard does not purport to address all of the
following characteristics:
safety concerns, if any, associated with its use. It is the
4.3.1 Illumination—CIE Illuminant C.
responsibility of the user of this standard to establish appro-
4.3.2 Surrounding Field—The field should be black.
priate safety and health practices and determine the applica-
4.3.3 Field of View—The specimen and one or more stan-
bility of regulatory limitations prior to use.
dards should subtend a visual angle of about 2° and be in the
field of view simultaneously.
2. Referenced Documents
4.3.4 Separation of Standard and Specimen—There should
2.1 ASTM Standards:
beaperceptibleseparationbetweenspecimenandstandard,but
D1545Test Method for Viscosity of Transparent Liquids by
this should be as small as is mechanically possible.
Bubble Time Method
D6166Test Method for Color of Naval Stores and Related
5. Procedure
Products (Instrumental Determination of Gardner Color)
E308PracticeforComputingtheColorsofObjectsbyUsing 5.1 Fill a glass tube with the material under test. If the
the CIE System material is perceptibly cloudy, first filter it.
5.2 Compare with glass standards, determining which stan-
3. Significance and Use
dard most closely matches the specimen in brightness and
3.1 This test method applies to drying oils, varnishes, fatty
saturation. Ignore hue differences.
acids, polymerized fatty acids, and resin solutions. Its applica-
tion to other materials has not been tested.
6. Report
4. Apparatus 6.1 Report the color as the number of the standard most
closely matching the specimen. If more precise measurements
4.1 Glass Standards, 18, numbered separately, and having
are needed, report as either matching a standard or lighter or
the color characteristics given in Table 1. The color shall be
darker. Thus, between colors 5 and 6, the steps will be 5, 5+,
produced by the glass components only. Some glass standards
6−, and 6.
6.2 Report any significant difference in hue between the
This test method is under the jurisdiction of Committee D01 on Paint and
sample and the nearest-match standard.
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.26 on Optical Properties.
Current edition approved June 1, 2010. Published June 2010. Originally
7. Precision and Bias
approved in 1958. Last previous edition approved in 2004 as D1544–04. DOI:
10.1520/D1544-04R10.
7.1 On the basis of a study in which one observer at each of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
80laboratoriesmadeduplicatedeterminationsonfoursamples,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
the “between” and “within” standard deviations were found to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. be 0.5 and 0.1 color number, respectively. Based on these
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D1544−04(2010)
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