ASTM D6166-97(2003)

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

SIGNIFICANCE AND USE
4.1 This test method provides a more precise way of measuring Gardner color than described in Test Method D 1544. It is applicable to naval stores products having colors from Gardner 1 to Gardner 18. The Gardner scale is not applicable to materials with colors lighter than 1 or darker than 18.
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, problems 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-Jul-2003
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.34 - Pine Chemicals and Hydrocarbon Resins

Relations

• Replaces: ASTM D6166-97 - Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)
• Effective Date: 10-Jul-2003
• Replaced By: ASTM D6166-08 - Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)
• Effective Date: 01-Jul-2008
• Referred By: ASTM D1544-04(2023) - Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
• Effective Date: 10-Jul-2003
• Referred By: ASTM D803-15(2020) - Standard Test Methods for Testing Tall Oil
• Effective Date: 10-Jul-2003
• Referred By: ASTM D801-02(2022) - Standard Test Methods for Sampling and Testing Dipentene
• Effective Date: 10-Jul-2003
• Referred By: ASTM D4890-18 - Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols
• Effective Date: 10-Jul-2003
• Referred By: ASTM D6605-06(2020) - Standard Practice for Determining the Color Stability of Hydrocarbon Resins After Heating
• Effective Date: 10-Jul-2003
• Referred By: ASTM D802-02(2022) - Standard Test Methods for Sampling and Testing Pine Oils
• Effective Date: 10-Jul-2003
• Referred By: ASTM D1981-11(2020)e1 - Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• Effective Date: 10-Jul-2003
• Referred By: ASTM E805-22 - Standard Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
• Effective Date: 10-Jul-2003
• Referred By: ASTM D509-20 - Standard Test Methods of Sampling and Grading Rosin
• Effective Date: 10-Jul-2003
• Referred By: ASTM D233-13(2022) - Standard Test Methods of Sampling and Testing Turpentine
• 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:D6166–97(Reapproved2003)
Standard Test Method for
Color of Naval Stores and Related Products (Instrumental
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 D 1544. It is applicable to naval stores products having colors
from Gardner 1 to Gardner 18. The Gardner scale is not
1.1 This test method covers the quantitative determination
applicable to materials with colors lighter than 1 or darker than
ofthecolorofclear,yellow/brown,liquidmaterialsusingcolor
18.
measuring instruments. The results may be invalid if other
materials are used. The test uses the Gardner color scale
5. Apparatus
described in Test Method D 1544. This test method applies to
5.1 An instrument capable of measuring transmitted color
naval stores products including tall oil, tall oil fatty acids,
andreportingtheresultsintheGardnercolorscaledescribedin
rosin, and related products.
TestMethodD 1544.Ifsuchaninstrumentisnotavailable,one
1.2 This standard does not purport to address all of the
may be used which is capable of measuring transmitted color
safety concerns, if any, problems associated with its use. It is
and reporting in tristimulus values or chromaticity coordinates
the responsibility of the user of this standard to establish
using standard illuminant C and the 2° observer, described in
appropriate safety and health practices and determine the
Practice E 308.
applicability of regulatory limitations prior to use.
5.2 Glass Cuvets, 10–mm path length, unless a different
2. Referenced Documents path length is specified by the manufacturer, or
5.3 GlassTubes, clear. Standard Gardner tubes, as described
2.1 ASTM Standards:
in Test Method D 1544, or other glass tubes designed for a
D 1544 Test Method for Color of Transparent Liquids
specific instrument may be used. Gardner tubes may provide
(Gardner Color Scale)
less accuracy than glass cuvets and should be used only when
E 177 Practice for the Use of the Terms Precision and Bias
a decrease in accuracy is acceptable. Glass cuvets should be
in ASTM Test Methods
used for referee situations.
E 308 Practice for Computing the Colors of Objects by
Using the CIE System
6. Calibration and Standardization
E 691 Practice for Conducting an Interlaboratory Study to
3 6.1 Calibrate the instrument following the manufacturer’s
Determine the Precision of a Test Method
recommendations.
3. Summary of Test Method
7. Procedure
3.1 The color of a liquid sample is measured using an
7.1 Taking care not to touch the measurement area of the
instrument capable of measuring transmitted color and report-
sample cell, fill a clean Gardner tube or cuvet with the material
inginGardnercolorsorinacolorsystemthatcanbeconverted
to be tested. If the material is cloudy, first filter it.
to Gardner colors.
7.2 Insert the glass tube or cuvet in the instrument and
4. Significance and Use measure the color, following the manufacturer’s recommended
procedure.
4.1 This test method provides a more precise way of
measuring Gardner color than described in Test Method
8. Report
8.1 Report the color in Gardner color units to a tenth of a
This test method is under the jurisdiction of Committee D01 on Paint and
Gardner unit as given by the instrument or as calculated by the
Related Coatings, Materials, and Applications and is the direct responsibility of
method in the appendix. Note if the material was filtered.
Subcommittee D01.34 on Naval Stores.
Current edition approved July 10, 2003. Published July 2003. Originally
approved in 1997. Last previous edition approved in 1997 as D 6166 - 97.
Annual Book of ASTM Standards, Vol 06.01.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6166–97 (2003)
9. Precision and Bias 9.2.2 Reproducibility Limit, 95 % (between laboratories) =
0.50 Gardner units.
9.1 Interlaboratory Test Program—An interlaboratory
9.3 These terms (repeatability limit and reproducibility
study of the color of three materials was run in 1996. Each of
limit) are used as specified in Practice E 177. The respective
13 laboratories tested each of the three materials.The design of
standard deviations among test results, related to the above
the experiment, similar to that of Practice E 691 and a
numbers by the factor of 2.8, are as follows:
within-between analysis of the data are given in ASTM
9.3.1 Repeatability standard deviation = 0.02 Gardner units.
Research Report.
9.3.2 Reproducibili
...