ASTM C224-1978(2009) Standard Practice for Sampling Glass Containers《玻璃容器的取样的标准作法》.pdf
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1、Designation: C 224 78 (Reapproved 2009)Standard Practice forSampling Glass Containers1This standard is issued under the fixed designation C 224; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、 parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the sampling of glass containers(for example, bottles, jars, and so forth) for performing suchtests as mechanical strength,
3、 dimensions, and other measurablecharacteristics, and for visual examination.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determ
4、ine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 147 Test Methods for Internal Pressure Strength of GlassContainersC 149 Test Method for Thermal Shock Resistance of GlassContainers2.2 Military Standard:MIL-STD 105 E Sampling Procedures and Ta
5、bles for In-spection by Attributes33. Classification3.1 For sampling purposes the pertinent characteristics ofglass containers are classified as follows:3.1.1 Grade of annealing (relative annealing stress).3.1.2 Hydrostatic pressure.3.1.3 Thermal shock strength.3.1.4 Visible characteristics readily
6、graded or judged byvisual examination, namely, deformities.3.1.5 Mold characteristics of a structural character (asdistinguished from appearance) where the component part orunit of the manufacturing process that controls the character-istic is the mold or mold cavity (as distinguished from thefurnac
7、e, feeder, or lehr), namely, capacity, dimensions.4. Number of Specimens4.1 Unless otherwise specified, the minimum number ofspecimens for the various classifications of Section 3 is givenin Table 1.5. Procedure5.1 Continuous ProcessSampling from a continuousmanufacturing process shall be in accorda
8、nce with a timeschedule. For those characteristics affected by the degree ofannealing, take the samples from the exit of the lehr (or frompacked cases whose continuity in point of time is known). Forthose characteristics not affected by the degree of annealing,quickly cooled samples may be taken ahe
9、ad of the lehr.5.2 LotSelect the sample from a lot by a procedureconsistent with the purpose of the sample. For some purposes,the sample may come from the lot as a whole; for otherpurposes, it may be necessary to sort the lot before sampling.Such sorting may be for the purpose of segregating lots ba
10、sedon style, color, size, manufacturer, or mold designation, asexamples. Take the specimens composing the sample accord-ing to the principles of random sampling; for instance, do nottake all the specimens from the same side or location of the lot.If the containers are packed in cases, remove the cas
11、es from thelot at random. Take specimens for evaluation, in turn, atrandom from these cases. The minimum number of cases to beselected shall be determined in accordance with MIL-STD105 E (see 5.2.1) or that number required to provide thenumber of individual containers to be evaluated (see 5.2.2),whi
12、chever quantity represents the larger number of cases. Ifmore than one independent evaluation can be performed on thesame container, no additional sample is required for themultiple evaluation.5.2.1 Minimum Number of Cases Determined in Accor-dance with MIL-STDDetermine the number of cases in thelot
13、 and use this number as “lot size” for Table 1 of MIL-STD1This practice is under the jurisdiction of ASTM Committee C14 on Glass andGlass Products and is the direct responsibility of Subcommittee C14.07 on GlassContainers.Current edition approved May 1, 2009. Published September 2009. Originallyappr
14、oved in 1953. Last previous edition approved in 2004 as C 224 78 (2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe AS
15、TM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.105 E. Find the corr
16、esponding sample size code letter (nor-mally Column II) of Table 1. Using the first and secondcolumns of Table II-A, find the sample size corresponding tothis code letter. This sample size will designate the number ofcases to be selected at random from the lot. As far as possible,an equal number of
17、individual containers shall be taken forevaluation from each case selected.5.2.2 Minimum Number of Cases Determined by Number ofIndividual Containers to be EvaluatedIn the event that 5.2.1does not provide the number of containers required for theevaluation, select sufficient cases at random to provi
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