ASTM D1209-05
(Test Method)Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
SCOPE
1.1 This test method describes a procedure for the visual measurement of the color of essentially light colored liquids (Note 1). It is applicable only to materials in which the color-producing bodies present have light absorption characteristics nearly identical with those of the platinum-cobalt color standards used.
Note 1—A procedure for estimating color of darker liquids, described for soluble nitrocellulose base solutions, is given in Guide D 365.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 For purposes of determining conformance of an observed or a calculated value using this test method to relevant specifications, test result(s) shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E 29.
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.For specific hazard statements see Section 6.
1.5 For specific hazard information, see the Material Safety Data Sheet.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1209–05
Standard Test Method for
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Color of Clear Liquids (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D 1209; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This test method describes a procedure for the visual
E 202 Test Methods for Analysis of Ethylene Glycols and
measurement of the color of essentially light colored liquids
Propylene Glycols
(Note 1). It is applicable only to materials in which the
E 346 Test Methods for Analysis of Methanol
color-producing bodies present have light absorption charac-
teristicsnearlyidenticalwiththoseoftheplatinum-cobaltcolor
3. Significance and Use
standards used.
3.1 The property of color of a solvent varies in importance
NOTE 1—A procedure for estimating color of darker liquids, described
with the application for which it is intended, the amount of
for soluble nitrocellulose base solutions, is given in Guide D 365.
color that can be tolerated being dependent on the color
1.2 The values stated in SI units are to be regarded as
characteristics of the material in which it is used. The paint,
standard. No other units of measurement are included in this
varnish, and lacquer solvents, or diluents commercially avail-
standard.
able on today’s market normally have little or no color. The
1.3 For purposes of determining conformance of an ob-
presence or absence of color in such material is an indication
served or a calculated value using this test method to relevant
of the degree of refinement to which the solvent has been
specifications, test result(s) shall be rounded off “to the nearest
subjected or of the cleanliness of the shipping or storage
unit” in the last right-hand digit used in expressing the
container in which it is handled, or both.
specificationlimit,inaccordancewiththerounding-offmethod
3.2 For a number of years the term “water-white” was
of PracticeE29.
considered sufficient as a measurement of solvent color.
1.4 This standard does not purport to address all of the
Several expressions for defining “water-white” gradually ap-
safety concerns, if any, associated with its use. It is the
pearedanditbecameevidentthatamoreprecisecolorstandard
responsibility of the user of this standard to establish appro-
was needed. This was accomplished in 1952 with the adoption
priate safety and health practices and determine the applica-
of Test Method D 1209 using the platinum-cobalt scale. This
bility of regulatory limitations prior to use. For specific hazard
test method is similar to the description given in Standard
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statements see Section 6.
Methods for the Examination of Water and Waste Water and is
1.5 For specific hazard information, see the Material Safety
referredtobymanyas“APHAColor.”Thepreparationofthese
Data Sheet.
platinum-cobalt color standards was originally described byA.
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Hazen in the American Chemical Journal in which he
2. Referenced Documents
assigned the number 5 (parts per ten thousand) to his platinum-
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2.1 ASTM Standards:
cobalt stock solution. Subsequently, in their first edition (1905)
D 156 Test Method for Saybolt Color of Petroleum Prod-
of Standard Methods for the Examination of Water, the
ucts (Saybolt Chromometer Method)
American Public Health Association, using exactly the same
D 365 Guide for Soluble Nitrocellulose Base Solutions
concentration of reagents, assigned the color designation 500
D 1193 Specification for Reagent Water
(parts per million) which is the same ratio. The parts per
million nomenclature is not used since color is not referred
directly to a weight relationship. It is therefore recommended
thattheincorrectterm“HazenColor”shouldnotbeused.Also,
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
because it refers primarily to water, the term “APHAColor” is
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
Current edition approved May 15, 2005. Published May 2005. Originally
approved in 1952. Last previous edition approved in 2000 as D 1209 – 00.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Standard Methods for the Examination of Water and Waste Water, M. Franson,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Ed., American Public Health Assoc., 14th ed., 1975, p. 65.
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