ASTM C675-91(2006)
(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.
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(Reapproved 2006)
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
5. Apparatus
anticipated number of washings and still present an acceptable
ware identification and appearance. 5.1 Tank, steel or stainless steel, equipped with a thermo-
statically controlled means of heating, and a solution level
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the control, to prevent variations in solution concentration and
temperature. The tank should be equipped with a coarsescreen
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- mesh shelf on which ware being tested is placed to avoid
sludge build-up around the ware.
bility of regulatory limitations prior to use.
5.2 Bottle Saw or Hot Wire Cutter—Either a hot wire or an
2. Summary of Method
abrasive wheel saw can be used to cut ware. If an abrasive
2.1 ThetimerequiredfordestructionofACLonexposureto wheel is used, the abrasive and glass sludge should be rinsed
alkalisolutionsisroughlyproportionaltothelabelthickness.A off the ware to avoid excessive depletion of the alkali solution.
thin coating of good alkali-resistant enamel will fail in a
6. Reagents
relatively short time, while an extremely heavy coating of a
poor alkali-resistant enamel will look reasonably good. A 6.1 Reagent grade chemicals shall be used in all tests.
Unless otherwise indicated, it is intended that all reagents shall
qualitative procedure is described. Any plant or laboratory
using this procedure should establish its own standards. conform to the specifications of the Committee on Analytical
Reagents of the American Chemical Society, where such
2.1.1 This test method is a qualitative method and deter-
mines the time required for 90 % destruction of any ACL specifications are available. Other grades may be used, pro-
vided it is first ascertained that the reagent is of sufficiently
exposed to an alkali solution by visual inspection. This test
method requires a minimum of skill and experience by the high purity to permit its use without lessening the accuracy of
the determination.
operator.
6.2 Alkali Solution—Prepare the alkali solution by mixing
3. Significance and Use
the following reagents:
3.1 This test method provides a means for determining the
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 Oct. 1, 2006. Published November 2006. Originally Chemicals,
...
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