ASTM C675-91(2011)
(Test Method)Standard Test Method for Alkali Resistance of Ceramic Decorations on Returnable Beverage Glass Containers
Standard Test Method for Alkali Resistance of Ceramic Decorations on Returnable Beverage Glass Containers
SIGNIFICANCE AND USE
This test method provides a means for determining the durability of decorated returnable glass beverage containers which may be a prerequisite in product specifications.
SCOPE
1.1 This test method covers determination of the alkali resistance of ceramic labels (hereafter referred to as ACL (Applied Color Label)) on returnable beverage bottles (hereafter referred to as ware) to ensure the necessary durability of the label. A number of states require the cleaning and sanitizing of this ware by washing in hot alkali solutions. Accelerated tests are needed to ensure that the ACL will withstand the anticipated number of washings and still present an acceptable ware identification and appearance.
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.
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Designation: C675 − 91 (Reapproved2011)
Standard Test Method for
Alkali Resistance of Ceramic Decorations on Returnable
Beverage Glass Containers
This standard is issued under the fixed designation C675; 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. Interferences
1.1 This test method covers determination of the alkali 4.1 Prepare fresh alkali solution for each set of ware and do
resistance of ceramic labels (hereafter referred to as ACL not use the solution more than 24 h because of carbon dioxide
(Applied Color Label)) on returnable beverage bottles (here- (CO )absorptionandtheinhibitingactionofboroncompounds
after referred to as ware) to ensure the necessary durability of dissolved from the ACL.
thelabel.Anumberofstatesrequirethecleaningandsanitizing
4.2 Do not use borosilicate glass containers for test solu-
of this ware by washing in hot alkali solutions. Accelerated
tions.
tests are needed to ensure that the ACL will withstand the
anticipated number of washings and still present an acceptable
5. Apparatus
ware identification and appearance.
5.1 Tank, steel or stainless steel, equipped with a thermo-
1.2 This standard does not purport to address all of the
statically controlled means of heating, and a solution level
safety concerns, if any, associated with its use. It is the
control, to prevent variations in solution concentration and
responsibility of the user of this standard to establish appro-
temperature. The tank should be equipped with a coarsescreen
priate safety and health practices and determine the applica-
mesh shelf on which ware being tested is placed to avoid
bility of regulatory limitations prior to use.
sludge build-up around the ware.
2. Summary of Method
5.2 Bottle Saw or Hot Wire Cutter—Either a hot wire or an
abrasive wheel saw can be used to cut ware. If an abrasive
2.1 The time required for destruction ofACLon exposure to
alkalisolutionsisroughlyproportionaltothelabelthickness.A wheel is used, the abrasive and glass sludge should be rinsed
off the ware to avoid excessive depletion of the alkali solution.
thin coating of good alkali-resistant enamel will fail in a
relatively short time, while an extremely heavy coating of a
6. Reagents
poor alkali-resistant enamel will look reasonably good. A
qualitative procedure is described. Any plant or laboratory
6.1 Reagent grade chemicals shall be used in all tests.
using this procedure should establish its own standards.
Unless otherwise indicated, it is intended that all reagents shall
2.1.1 This test method is a qualitative method and deter-
conform to the specifications of the Committee on Analytical
mines the time required for 90 % destruction of any ACL
Reagents of the American Chemical Society, where such
exposed to an alkali solution by visual inspection. This test
specifications are available. Other grades may be used, pro-
method requires a minimum of skill and experience by the
vided it is first ascertained that the reagent is of sufficiently
operator.
high purity to permit its use without lessening the accuracy of
the determination.
3. Significance and Use
6.2 Alkali Solution—Prepare the alkali solution by mixing
3.1 This test method provides a means for determining the
the following reagents:
durability of decorated returnable glass beverage containers
which may be a prerequisite in product specifications.
1 2
This test method is under the jurisdiction of ASTM Committee C14 on Glass Reagent Chemicals, American Chemical Society Specifications , American
and Glass Products and is the direct responsibility of Subcommittee C14.10 on Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Glass Decoration. listed by the American Chemical Society, see Analar Standards for Laboratory
Current edition approved April 1, 2011. Published April 2011. Originally Chemica
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