ASTM D6166-97

Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)

SCOPE
1.1 This test method covers the quantitative determination of the color of clear, yellow/brown, liquid materials using color measuring instruments. The results may be invalid if other materials are used. The test uses the Gardner color scale described in Test Method D 1544. This test method applies to naval stores products including tall oil, tall oil fatty acids, rosin, and related products.  
1.2 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: 09-Aug-1997
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.34 - Pine Chemicals and Hydrocarbon Resins

Relations

• Replaced By: ASTM D6166-97(2003) - Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)
• Effective Date: 10-Jul-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 6166 – 97
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Color of Naval Stores and Related Products (Instrumental
1
Determination of Gardner Color)
This standard is issued under the fixed designation D 6166; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope from Gardner 1 to Gardner 18. The Gardner scale is not
applicable to materials with colors lighter than 1 or darker than
1.1 This test method covers the quantitative determination
18.
of the color of clear, yellow/brown, liquid materials using color
measuring instruments. The results may be invalid if other
5. Apparatus
materials are used. The test uses the Gardner color scale
5.1 An instrument capable of measuring transmitted color
described in Test Method D 1544. This test method applies to
and reporting the results in the Gardner color scale described in
naval stores products including tall oil, tall oil fatty acids,
Test Method D 1544. If such an instrument is not available, one
rosin, and related products.
may be used which is capable of measuring transmitted color
1.2 This standard does not purport to address all of the
and reporting in tristimulus values or chromaticity coordinates
safety concerns, if any, problems associated with its use. It is
using standard illuminant C and the 2° observer, described in
the responsibility of the user of this standard to establish
Practice E 308.
appropriate safety and health practices and determine the
5.2 Glass Cuvets, 10–mm path length, unless a different
applicability of regulatory limitations prior to use.
path length is specified by the manufacturer, or
5.3 Glass Tubes, clear. Standard Gardner tubes, as described
2. Referenced Documents
in Test Method D 1544, or other glass tubes designed for a
2.1 ASTM Standards:
specific instrument may be used. Gardner tubes may provide
D 1544 Test Method for Color of Transparent Liquids
2 less accuracy than glass cuvets and should be used only when
(Gardner Color Scale)
a decrease in accuracy is acceptable. Glass cuvets should be
E 177 Practice for the Use of the Terms Precision and Bias
3 used for referee situations.
in ASTM Test Methods
E 308 Practice for Computing the Colors of Objects by
6. Calibration and Standardization
3
Using the CIE System
6.1 Calibrate the instrument following the manufacturer’s
E 691 Practice for Conducting an Interlaboratory Study to
3 recommendations.
Determine the Precision of a Test Method
7. Procedure
3. Summary of Test Method
7.1 Taking care not to touch the measurement area of the
3.1 The color of a liquid sample is measured using an
sample cell, fill a clean Gardner tube or cuvet with the material
instrument capable of measuring transmitted color and report-
to be tested. If the material is cloudy, first filter it.
ing in Gardner colors or in a color system that can be converted
7.2 Insert the glass tube or cuvet in the instrument and
to Gardner colors.
measure the color, following the manufacturer’s recommended
procedure.
4. Significance and Use
4.1 This test method provides a more precise way of
8. Report
measuring Gardner color than described in Test Method D
8.1 Report the color in Gardner color units to a tenth of a
1544. It is applicable to naval stores products having colors
Gardner unit as given by the instrument or as calculated by the
method in the appendix. Note if the material was filtered.
1
This test method is under the jurisdiction of Committee D-1 on Paint and
Related Coatings, Materials, and Applications and is the direct responsibility of
9. Precision and Bias
Subcommittee D01.34 on Naval Stores.
Current edition approved Aug. 10, 1997. Published October 1997.
9.1 Interlaboratory Test Program—An interlaboratory
2
Annual Book of ASTM Standards, Vol 06.01.
study of the color of three materials was run in 1996. Each of
3
Annual Book of ASTM Standards, Vol 14.02.
13 laboratories tested each of the three materials. The design of
1

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NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬discontinued.¬
Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
D 6166
the experiment, similar to that of Practice E 691 and a limit) are used as specified in Practice E 177. The respective
within-between analysis of the data are given in ASTM standard deviations among test results, related to the above
4
Research Report. numbers by the factor of 2.8, are as follows:
9.2 Test Resu
...