Standard Test Method for Color of Liquids Using Tristimulus Colorimetry

SIGNIFICANCE AND USE
The major objective of the visual platinum-cobalt (Pt-Co) method of color measurement, as defined in Test Method D1209, is to rate specific materials for yellowness. This yellowness is frequently the result of the undesirable tendency of liquid hydrocarbons to absorb blue light due to contamination in processing, storage or shipping.
Clear liquids can be rated for light absorbing yellowish or brownish contaminants, using scales that simulate the long-established visual-comparison method just cited. Where needed, dimensions of color can be reported to identify any pinkness or greenness (one dimension), or grayness.
SCOPE
1.1 This test method covers an instrumental method for the CIE (Commission International de l'Eclairage) tristimulus measurement of the color of near-clear liquid samples. The measurement is converted to color ratings in the platinum-cobalt system.
1.2 This test method has been found applicable to the color measurement of clear, liquid samples, free of haze, with nominal platinum cobalt color values in the 0 to 100 range. It is applicable to nonfluorescent liquids with light absorption characteristics similar to those of the platinum cobalt color standard solutions. Test Methods D1686, D2108, and  deal with the visual and instrumental measurement of near-clear liquids.
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded in accordance with the rounding off methods of Practice E29.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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. For specific hazard statements, see Section 8.

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Publication Date
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5386 − 10
Standard Test Method for
1
Color of Liquids Using Tristimulus Colorimetry
This standard is issued under the fixed designation D5386; 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* D1686 Test Method for Color of Solid Aromatic Hydrocar-
bons and Related Materials in the Molten State (Platinum-
1.1 This test method covers an instrumental method for the
Cobalt Scale)
CIE (Commission International de l’Eclairage) tristimulus
D2108 Test Method for Color of Halogenated Organic
measurement of the color of near-clear liquid samples. The
Solvents and Their Admixtures (Platinum-Cobalt Scale)
measurement is converted to color ratings in the platinum-
D3437 Practice for Sampling and Handling Liquid Cyclic
cobalt system.
Products
1.2 This test method has been found applicable to the color
D6809 Guide for Quality Control and Quality Assurance
measurement of clear, liquid samples, free of haze, with
Procedures for Aromatic Hydrocarbons and Related Ma-
nominal platinum cobalt color values in the 0 to 100 range. It
terials
is applicable to nonfluorescent liquids with light absorption
E29 Practice for Using Significant Digits in Test Data to
characteristics similar to those of the platinum cobalt color
Determine Conformance with Specifications
standard solutions. Test Methods D1686, D2108, and E450
E179 Guide for Selection of Geometric Conditions for
deal with the visual and instrumental measurement of near-
Measurement of Reflection and Transmission Properties
clear liquids.
of Materials
E308 PracticeforComputingtheColorsofObjectsbyUsing
1.3 In determining the conformance of the test results using
this method to applicable specifications, results shall be the CIE System
E313 Practice for Calculating Yellowness and Whiteness
rounded in accordance with the rounding off methods of
Practice E29. Indices from Instrumentally Measured Color Coordinates
E450 Test Method for Measurement of Color of Low-
1.4 The values stated in SI units are to be regarded as
Colored Clear Liquids Using the Hunterlab Color Differ-
standard. No other units of measurement are included in this
3
ence Meter (Withdrawn 1993)
standard.
E691 Practice for Conducting an Interlaboratory Study to
1.5 This standard does not purport to address all of the
Determine the Precision of a Test Method
safety concerns, if any, associated with its use. It is the
2.2 Other Document:
responsibility of the user of this standard to establish appro-
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
priate safety and health practices and determine the applica-
4
1910.1200
bility of regulatory limitations prior to use. For specific hazard
statements, see Section 8.
3. Summary of Test Method
3.1 Color is measured by tristimulus values of light trans-
2. Referenced Documents
mitted by a sample as percent of light transmitted by distilled
2
2.1 ASTM Standards:
water. Convert the measured tristimulus values by appropriate
D1193 Specification for Reagent Water
equations to the platinum-cobalt scale.
D1209 Test Method for Color of Clear Liquids (Platinum-
Cobalt Scale)
4. Significance and Use
4.1 The major objective of the visual platinum-cobalt (Pt-
1
This test method is under the jurisdiction of ASTM Committee D16 on
Co) method of color measurement, as defined in Test Method
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
D1209, is to rate specific materials for yellowness. This
Subcommittee D16.04 on Instrumental Analysis.
Current edition approved Jan. 1, 2010. Published January 2010. Originally
approved in 1993. Last previous edition approved in 2005 as D5386 – 05. DOI:
3
10.1520/D5386-10. The last approved version of this historical standard is referenced on
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5386 − 10
yellowness is frequently the result of the undesirable tendency chloride (CoCl H O) in water. Carefully add 100 mL of
2 2
of liquid hydrocarbons to absorb blue light due to contamina- hydrochloric aci
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:D5386–05 Designation:D5386–10
Standard Test Method for
1
Color of Liquids Using Tristimulus Colorimetry
This standard is issued under the fixed designation D5386; 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 covers an instrumental method for the CIE (Commission International de l’Eclairage) tristimulus
measurement of the color of near-clear liquid samples. The measurement is converted to color ratings in the platinum-cobalt
system.
1.2This1.2 This test method has been found applicable to the color measurement of clear, liquid samples, free of haze, with
nominal platinum cobalt color values in the 0 to 100 range. It is applicable to nonfluorescent liquids with light absorption
characteristics similar to those of the platinum cobalt color standard solutions. Test Methods D1686, D2108, and E450 deal with
the visual and instrumental measurement of near-clear liquids.
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded
in accordance with the rounding off methods of Practice E29.
1.4
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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. For specific hazard statements, see Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D1686 Test Method for Color of Solid Aromatic Hydrocarbons and Related Materials in the Molten State (Platinum-Cobalt
Scale)
D2108 Test Method for Color of Halogenated Organic Solvents and Their Admixtures (Platinum-Cobalt Scale)
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E179 Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
E308 Practice for Computing the Colors of Objects by Using the CIE System
E313 Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates
3
E450 Method for Measurement of Color of Low-Colored Clear Liquids Using the Hunterlab Color Difference Meter
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Other Document:
4
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Summary of Test Method
3.1 Color is measured by tristimulus values of light transmitted by a sample as percent of light transmitted by distilled water.
1
This test method is under the jurisdiction ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.04 on Instrumental Analysis.
Current edition approved Oct. 15, 2005. Published December 2005. Originally approved in 1993. Last previous edition approved in 2004 as D5386–04. DOI:
10.1520/D5386-05.
Current edition approved Jan. 1, 2010. Published January 2010. Originally approved in 1993. Last previous edition approved in 2005 as D5386 – 05. DOI:
10.1520/D5386-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.
4
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5386–10
Convert the measured tristimulus v
...

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