ASTM D3210-95(2016)
(Test Method)Standard Test Method for Comparing Colors of Films from Water-Emulsion Floor Polishes
Standard Test Method for Comparing Colors of Films from Water-Emulsion Floor Polishes
SIGNIFICANCE AND USE
5.1 Whiteness index obtained from reflectance measurements on exaggerated dried polish films on filter paper can be used as a measurement of the color of such films.
5.2 Whiteness index may be useful in predicting the potential discoloring effect of polish films on flooring substrates.
5.3 Whiteness index should be useful in specifications when color comparisons are made with a standard sample polish.
SCOPE
1.1 This test method covers comparing colors of films (or solids) deposited from the emulsified particles in water emulsion floor polishes. It is based upon luminous reflectance measurements made with tristimulus colorimeters such as the Hunter Color Difference Meter.2
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
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Designation: D3210 − 95 (Reapproved 2016)
Standard Test Method for
Comparing Colors of Films from Water-Emulsion Floor
Polishes
This standard is issued under the fixed designation D3210; 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 ness when plus, blueness when minus, and zero for neutral
gray or white. Conversion factors for instruments reading in
1.1 This test method covers comparing colors of films (or
X, Y, Z units are:
solids) deposited from the emulsified particles in water emul-
sion floor polishes. It is based upon luminous reflectance
L 5 10=Y b 5 7.0 ~Y 2 0.847 Z!/=Y (2)
measurements made with tristimulus colorimeters such as the
4. Summary of Test Method
Hunter Color Difference Meter.
4.1 Reflectance measurements are made on exaggerated or
1.2 The values stated in SI units are to be regarded as the
heavy dried polish films produced by saturating white filter
standard. The values given in parentheses are for information
paper. The color measurement is expressed as whiteness index.
only.
5. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 Whiteness index obtained from reflectance measure-
responsibility of the user of this standard to establish appro-
ments on exaggerated dried polish films on filter paper can be
priate safety and health practices and determine the applica-
used as a measurement of the color of such films.
bility of regulatory limitations prior to use.
5.2 Whiteness index may be useful in predicting the poten-
tial discoloring effect of polish films on flooring substrates.
2. Referenced Documents
3 5.3 Whiteness index should be useful in specifications when
2.1 ASTM Standards:
color comparisons are made with a standard sample polish.
E259 Practice for Preparation of Pressed Powder White
Reflectance Factor Transfer Standards for Hemispherical
6. Apparatus
and Bi-Directional Geometries
6.1 Tristimulus Colorimeter, which gives reflectance read-
ings which in turn are converted by calculations to L, a, and b
3. Terminology
color scale values, or these color scale values may be read
3.1 Definitions:
directly from an instrument that automatically makes the
3.1.1 whiteness index—a color measurement calculated
calculations. Other apparatus is satisfactory if equivalent re-
from the equation
sults are obtained.
WI5 L 2 3b (1)
6.2 Filter Paper, medium flow rate, cut into strips 76.2 by
152.4 mm (3 in. by 6 in.).
where L and b are values measured directly with the Color
Difference Meter. L measures lightness, which is 100 for 6.3 Spring Clamp, approximately 76 mm (3 in.) wide, two
perfectly white and zero for black; and b measures yellow- are required.
NOTE 1—The following instruments are believed to provide color
difference measurements suitable for use with this procedure:
This test method is under the jurisdiction of ASTM Committee D21 on Polishes
(1) Hunter Color Difference Meter.
and is the direct responsibility of Subcommittee D21.04 on Performance Tests
(2) Color Eye Colorimeter.
Current edition approved Oct. 1, 2016. Published October 2016. Originally
(3) General Electric Recording Spectrophotometer.
approved in 1973. Last previous edition approved in 2008 as D3210 – 95 (2008).
(4) Colormaster Differential Colorimeter.
DOI: 10.1520/D3210-95R16.
2 (5) Gardner Color Difference Meter.
Hunter, R. S., “Photoelectric Color Difference Meter,” Journal of the Optical
Society, Vol. 48, 1958, p. 985.
7. Reference Standards
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 Primary Standard—The primary standard for reflec-
Standards volume information, refer to the standard’s Document Summary page on
tance measurement is a layer of freshly prepared magne
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: D3210 − 95 (Reapproved 2008) D3210 − 95 (Reapproved 2016)
Standard Test Method for
Comparing Colors of Films from Water-Emulsion Floor
Polishes
This standard is issued under the fixed designation D3210; 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 comparing colors of films (or solids) deposited from the emulsified particles in water emulsion floor
polishes. It is based upon luminous reflectance measurements made with tristimulus colorimeters such as the Hunter Color
Difference Meter.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
2. Referenced Documents
2.1 ASTM Standards:
E259 Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and
Bi-Directional Geometries
3. Terminology
3.1 Definitions:
3.1.1 whiteness index—a color measurement calculated from the equation
WI 5 L 2 3b (1)
where L and b are values measured directly with the Color Difference Meter. L measures lightness, which is 100 for per-
fectly white and zero for black; and b measures yellowness when plus, blueness when minus, and zero for neutral gray or
white. Conversion factors for instruments reading in X, Y,Z units are:
L 5 10=Y b 5 7.0 Y 2 0.847 Z /=Y (2)
~ !
4. Summary of Test Method
4.1 Reflectance measurements are made on exaggerated or heavy dried polish films produced by saturating white filter paper.
The color measurement is expressed as whiteness index.
5. Significance and Use
5.1 Whiteness index obtained from reflectance measurements on exaggerated dried polish films on filter paper can be used as
a measurement of the color of such films.
5.2 Whiteness index may be useful in predicting the potential discoloring effect of polish films on flooring substrates.
5.3 Whiteness index should be useful in specifications when color comparisons are made with a standard sample polish.
This test method is under the jurisdiction of ASTM Committee D21 on Polishes and is the direct responsibility of Subcommittee D21.04 on Performance Tests
Current edition approved March 1, 2008Oct. 1, 2016. Published April 2008October 2016. Originally approved in 1973. Last previous edition approved in 20022008 as
D3210 – 95 (2002).(2008). DOI: 10.1520/D3210-95R08.10.1520/D3210-95R16.
Hunter, R. S., “Photoelectric Color Difference Meter,” Journal of the Optical Society, Vol. 48, 1958, p. 985.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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.
Hunter, R. S., “Instruments and Test Methods for Control of Whiteness in Textile Mills,” American Dyestuff Reporter, Vol 56, No. 25, Dec. 4, 1967, pp. 80–87.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3210 − 95 (2016)
6. Apparatus
6.1 Tristimulus Colorimeter, which gives reflectance readings which in turn are converted by calculations to L,a, and b color
scale values, or these color scale values may be read directly from an instrument that automatically makes the calculations. Other
apparatus is satisfactory if equivalent results are obtained.
6.2 Filter Paper, medium flow rate, cut into strips 76.2 by 152.4 mm (3 in. by 6 in.).
6.3 Spring Clamp, approximately 76 mm (3 in.) wide, two are required.
NOTE 1—The following instrument
...
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