Standard Practice for Sampling Glass Containers

ABSTRACT
This practice covers the standard for sampling of glass bottles, jars, and other containers intended for use in testing mechanical strength, dimensions, and other measurable characteristics. Sampling from a continuous manufacturing process shall be in accordance with a time schedule. When testing for annealing affected characteristics, samples shall be taken from the exit of the lehr (or from packed cases whose continuity in point of time is known). For characteristics not affected by the degree of annealing, quickly cooled samples may be taken ahead of the lehr. Sample may come from the lot as a whole or it may be necessary to sort the lot before sampling. Sorting may be based on style, color, size, manufacturer, or mold designation. Containers packed in cases shall be removed from the lot at random. The minimum number of cases to be selected shall be in accordance with the military standard prescribed herein.
SCOPE
1.1 This practice covers the sampling of glass containers (for example, bottles, jars, and so forth) for performing such tests as mechanical strength, dimensions, and other measurable characteristics, and for visual examination.
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.

General Information

Status
Historical
Publication Date
31-Mar-2004
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM C224-78(2004)e1 - Standard Practice for Sampling Glass Containers
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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e1
Designation:C224–78 (Reapproved2004)
Standard Practice for
Sampling Glass Containers
This standard is issued under the fixed designation C 224; 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.
e NOTE—The designation of the MIL-STD was editorially corrected in May 2004.
1. Scope istic is the mold or mold cavity (as distinguished from the
furnace, feeder, or lehr), namely, capacity, dimensions.
1.1 This practice covers the sampling of glass containers
(for example, bottles, jars, and so forth) for performing such
4. Number of Specimens
tests as mechanical strength, dimensions, and other measurable
4.1 Unless otherwise specified, the minimum number of
characteristics, and for visual examination.
specimens for the various classifications of Section 3 is given
1.2 This standard does not purport to address all of the
in Table 1.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Procedure
priate safety and health practices and determine the applica-
5.1 Continuous Process—Sampling from a continuous
bility of regulatory limitations prior to use.
manufacturing process shall be in accordance with a time
schedule. For those characteristics affected by the degree of
2. Referenced Documents
annealing, take the samples from the exit of the lehr (or from
2.1 ASTM Standards:
packed cases whose continuity in point of time is known). For
C 147 Test Methods for Internal Pressure Strength of Glass
those characteristics not affected by the degree of annealing,
Containers
quickly cooled samples may be taken ahead of the lehr.
C 149 Test Method for Thermal Shock Resistance of Glass
5.2 Lot—Select the sample from a lot by a procedure
Containers
consistent with the purpose of the sample. For some purposes,
2.2 Military Standard:
the sample may come from the lot as a whole; for other
MIL-STD 105 E Sampling Procedures and Tables for In-
3 purposes, it may be necessary to sort the lot before sampling.
spection by Attributes
Such sorting may be for the purpose of segregating lots based
3. Classification on style, color, size, manufacturer, or mold designation, as
examples. Take the specimens composing the sample accord-
3.1 For sampling purposes the pertinent characteristics of
ing to the principles of random sampling; for instance, do not
glass containers are classified as follows:
take all the specimens from the same side or location of the lot.
3.1.1 Grade of annealing (relative annealing stress).
Ifthecontainersarepackedincases,removethecasesfromthe
3.1.2 Hydrostatic pressure.
lot at random. Take specimens for evaluation, in turn, at
3.1.3 Thermal shock strength.
random from these cases. The minimum number of cases to be
3.1.4 Visible characteristics readily graded or judged by
selected shall be determined in accordance with MIL-STD
visual examination, namely, deformities.
105 E (see 5.2.1) or that number required to provide the
3.1.5 Mold characteristics of a structural character (as
number of individual containers to be evaluated (see 5.2.2),
distinguished from appearance) where the component part or
whichever quantity represents the larger number of cases. If
unit of the manufacturing process that controls the character-
more than one independent evaluation can be performed on the
same container, no additional sample is required for the
This practice is under the jurisdiction of ASTM Committee C14 on Glass and
multiple evaluation.
Glass Products and is the direct responsibility of Subcommittee C14.07 on Glass
5.2.1 Minimum Number of Cases Determined in Accor-
Containers.
dance with MIL-STD—Determine the number of cases in the
Current edition approved April 1, 2004. Published May 2004. Originally
approved in 1953. Last previous edition approved in 1999 as C 224 – 78 (1999).
lot and use this number as “lot size” for Table 1 of MIL-STD
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
105 E. Find the corresponding sample size code letter (nor-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mally Column II) of Table 1. Using the first and second
Standards volume information, refer to the standard’s Document Summary page on
columns of Table II-A, find the sample size corresponding to
the ASTM website.
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
this code letter. This sample size will designate the number of
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
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e1
C224–78 (2004)
TABLE 1 Minimum Number of Specimens for Sample
Classification (Test or Examination to be Made Continuous Production (Lehr) Lot, Minimum Number
on Specimen) of Containers
Minimum Number Time Schedule
A
Annealing 3 3 h or less 20
B C
Internal pressure 1 round 3 h or less 50
B D C
Thermal shock 1 round variable 50
E EF
Visible characteristics not applicable not applicable
G H
Dimensional characteristics 1 round variable 50
A
The three containers shall represent both sides and center of lehr.
B
A
...

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