Astm D 3430 – 95 (Reapproved 2002) pdf free download

Standard Test Method for
Clarity and Yellowness of Liquid Water-Based Clear Floor
Polishes1

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 the 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

1.1 This test method covers the 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.

2. Terminology

2.1 Definition:

2.1.1 absorbance—the negative logarithm, to the base 10,
of the ratio of the radiant power transmitted through a sample
to the radiant power incident upon the sample. Hence, as the
clarity decreases or the depth of the yellowness increases the
absorbance increases.

3. Significance and Use

3.1 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.

4. Apparatus

4.1 Colorimeter,2 equipped with cylindrical 20-mm matched
cells. (If 20-mm cells are not available, 10-mm matched cells
may be substituted.)

4.2 Any colourimeter having equivalent resolution and sensitivity may be used with the appropriately matched cells.

5. Sampling

5.1 The sample shall be representative of the material to be
tested and the portion used for the test shall be representative
of the sample itself.

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