ASTM C676-93(1999)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C 676 – 93 (Reapproved 1999)
Standard Test Method for
Detergent Resistance of Ceramic Decorations on Glass
Tableware
This standard is issued under the fixed designation C 676; 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 Specimen Holder—A device for supporting the speci-
mens to be evaluated in such a manner as to ensure free and
1.1 This qualitative test method is designed to provide a
unobstructed contact between the decoration and the test
convenient and reproducible method of determining the deter-
solution.
gent resistance of decorations applied to glass tableware.
1.2 This standard does not purport to address all of the
6. Test Specimens
safety concerns, if any, associated with its use. It is the
6.1 Test specimens consist of representative glass tableware
responsibility of the user of this standard to establish appro-
with ceramic decorations.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
7. Test Solution
2. Referenced Documents 7.1 Prepare a test solution consisting of 5 % sodium pyro-
phosphate (Na P O ·10H O) and 95 % distilled water.
4 2 7 2
2.1 ASTM Standards:
C 927 Test Method for Lead and Cadmium Extracted from
8. Procedure
the Lip and Rim Area of Glass Tumblers Externally
2 8.1 Immerse the samples for 2-h periods in the test solution
Decorated with Ceramic Glass Enamels
maintained at 60 6 2°C. Retain a duplicate piece of ware with
each decoration under test without exposure to the solution as
3. Terminology
an aid in judging the degree of chemical action on the
3.1 Definition:
specimens under test. At the end of the 2-h periods, remove the
3.2 detergent resistance—the degree of resistance to the
specimens from the solution, rub vigorously with a cloth under
chemical action of detergents.
running water, dry, and evaluate.
4. Significance and Use 8.2 Grade the decorations after each 2-h period of immer-
sion in accordance with one of the following classes:
4.1 This test method provides a means of estimating the
Class 1—No loss of gloss.
qualitative performance of glass enamel decorations that are
Class 2—Gloss loss, no loss of opacity.
exposed to high phosphate detergents during use. This test
Class 3—Noticeable loss of opacity.
method also attempts to simulate accelerated exposure to high
Class 4—Complete removal of decoration.
phosphate detergents prior to testing for heavy metal release,
such as in Test Method C 927 when long term performance of
9. Interpretation of Results
enamels must be evaluated.
9.1 Grade the decorations after each 2-h period of immer-
5. Apparatus sion in accordance with one of the following classes:
Grade 1—No attack apparent.
5.1 Test Chamber—A thermostatically controlled tank, pref-
Grade 2—Appearance of iridescence or visible
...