ASTM D3430-95(2002)
(Test Method)Standard Test Method for Clarity and Yellowness of Liquid Water-Based Clear Floor Polishes
Standard Test Method for Clarity and Yellowness of Liquid Water-Based Clear Floor Polishes
SIGNIFICANCE AND USE
The laboratory technique described in this test method is used to evaluate the clarity and yellowness of water-based “clear” floor polishes for product development or quality control purposes.
SCOPE
1.1 This test method covers measurement of the degree of clarity and depth of yellowness of water-based clear floor polishes.
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
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D3430–95 (Reapproved 2002)
Standard Test Method for
Clarity and Yellowness of Liquid Water-Based Clear Floor
Polishes
This standard is issued under the fixed designation D 3430; 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 5.2 Calibration Sample—Any emulsion polymer that visu-
ally exhibits little or no yellowness, selected for dilution (see
1.1 This test method covers measurement of the degree of
6.1).
clarity and depth of yellowness of water-based clear floor
polishes.
6. Preparation of Correction Graph
1.2 This standard does not purport to address all of the
6.1 Prepare minimum of five dilutions of the calibration
safety concerns, if any, associated with its use. It is the
sample with distilled water so that absorbance reading between
responsibility of the user of this standard to establish appro-
0.00 and 0.16 at 500 nm are obtained. Measure the absorbance
priate safety and health practices and determine the applica-
at both 500 nm and 400 nm for each dilution (see Section 7).
bility of regulatory limitations prior to use.
6.2 Plot the absorbance at 500 nm versus that at 400 nm and
2. Terminology fit a straight line through the resulting points starting from the
origin (see Fig. 1).
2.1 Definition:
6.3 It is necessary to prepare a correction graph only once
2.1.1 absorbance—the negative logarithm, to the base 10,
for a given instrument and set of cells.
of the ratio of the radiant power transmitted through a sample
to the radiant power incident upon the sample. Hence, as the
7. Procedure
clarity decreases or the depth of the yellowness increases the
7.1 Adjustment of Colorimeter—Set the colorimeter at 500
absorbance increases.
nm and at 0 absorbance with distilled water as a blank in one
3. Significance and Use of the matched cells.
7.2 Absorbance—Fill the companion cell with sample and
3.1 The laboratory technique described in this test method is
place in the cell holder. Read and record the absorbance. This
used to evaluate the clarity and yellowness of water-based
reading is indicative of the degree of turbidity.
“clear” floor polishes for product development or quality
7.3 Adjustment of Colorimeter—Reset the colorimeter at
control purposes.
400 nm and at 0 absorbance with distilled water as a blank in
4. Apparatus one of the matched cells.
7.4 Absorbance—Read and record the absorbance of the
4.1 Colorimeter, equippedwithcylindrical20-mmmatched
sample. This reading is indicative of the uncorrected yellow-
cells. (If 20-mm cells are not available, 10-mm matched cells
ness.
may be substituted.)
7.5 Correction—The corrected value for yellowness is the
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