ASTM D3430-95(2021)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3430 − 95 (Reapproved 2021)
Standard Test Method for
Clarity and Yellowness of Liquid Water-Based Clear Floor
Polishes
This standard is issued under the fixed designation D3430; 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 4. Apparatus
1.1 This test method covers measurement of the degree of 4.1 Colorimeter, equipped with cylindrical 20-mm
clarity and depth of yellowness of water-based clear floor matched cells. (If 20-mm cells are not available, 10-mm
polishes. matched cells may be substituted.)
1.2 This standard does not purport to address all of the 4.2 Any colorimeter having equivalent resolution and sen-
safety concerns, if any, associated with its use. It is the
sitivity may be used with the appropriate matched cells.
responsibility of the user of this standard to establish appro-
5. Sampling
priate safety, health, and environmental practices and deter-
5.1 The sample shall be representative of the material to be
mine the applicability of regulatory limitations prior to use.
tested and the portion used for the test shall be representative
1.3 This international standard was developed in accor-
of the sample itself.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5.2 Calibration Sample—Any emulsion polymer that visu-
Development of International Standards, Guides and Recom-
ally exhibits little or no yellowness, selected for dilution (see
mendations issued by the World Trade Organization Technical
6.1).
Barriers to Trade (TBT) Committee.
6. Preparation of Correction Graph
2. Terminology
6.1 Prepare minimum of five dilutions of the calibration
sample with distilled water so that absorbance reading between
2.1 Definitions:
0.00 and 0.16 at 500 nm are obtained. Measure the absorbance
2.1.1 absorbance—the negative logarithm, to the base 10, of
at both 500 nm and 400 nm for each dilution (see Section 7).
the ratio of the radiant power transmitted through a sample to
the radiant power incident upon the sample. Hence, as the
6.2 Plot the absorbance at 500 nm versus that at 400 nm and
clarity decreases or the depth of the yellowness increases the
fit a straight line through the resulting points starting from the
absorbance increases.
origin (see Fig. 1).
6.3 It is necessary to prepare a correction graph only once
3. Significance and Use
for a given instrument and set of cells.
3.1 The laboratory technique described in this test method is
7. Procedure
used to evaluate the clarity and yellowness of water-based
“clear” floor polishes for product development or quality 7.1 Adjustment of Colorimeter—Set the colorimeter at 500
control purposes. nm and at 0 absorbance with distilled water as a blank in one
of the matched cells.
1 2
This test method is under the jurisdiction ofASTM Committee D21 on Polishes Spectronic 70 has been found satisfactory. The sole source of supply of the
and is the direct responsibility of Subcommittee D21.03 on Chemical and Physical apparatus known to the
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