1、Designation: C224 78 (Reapproved 2014)Standard Practice forSampling Glass Containers1This standard is issued under the fixed designation C224; 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 p
2、arentheses 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, d
3、imensions, 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 determin
4、e the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C147 Test Methods for Internal Pressure Strength of GlassContainersC149 Test Method for Thermal Shock Resistance of GlassContainers2.2 Military Standard:MIL-STD 105 E Sampling Procedures and Tables
5、 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 grad
6、ed 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 thefurnace, f
7、eeder, 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 accordance
8、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 ahead o
9、f 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 basedo
10、n 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 cases f
11、rom 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),whichev
12、er 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 and
13、 use this number as “lot size” for Table 1 of MIL-STD105 E. Find the corresponding 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 b
14、e selected at random from the lot. As far as possible,1This 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 Oct. 1, 2014. Published October 2014. Originallyapproved
15、 in 1953. Last previous edition approved in 2009 as C224 78 (2009).DOI: 10.1520/C0224-78R14.2For 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 S
16、ummary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1a
17、n equal number of 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
18、at random to provide thenecessary number of containers.NOTE 1An example of minimum sampling using MIL-STD 105 E isas follows:A lot of 1000 cases of 24 containers each would call for sample sizecode letter J (Column II, Table 1), corresponding to 80 cases (Table II-A).The minimum sample size for visi
19、ble characteristic determinations for theoriginal lot of 24 000 containers is designated by sample size code letterM. Turning to Table X-M-2, it can be seen that 315 containers (approxi-mately 4 per case selected) are needed for a single sample, 200 (212 percase) followed by 200 (212 per case) for t
20、he respective first and secondsamples for double sampling, and 80 (1 per case) for each step of multiplesampling. The containers sampled may be used to determine the relativefrequency of occurrence of containers from individual mold cavities.Containers that have passed the visual examination may be
21、used toprovide samples (chosen at random from among the cases) for theannealing, internal pressure, thermal shock, and dimensional evaluationsas required.6. Report6.1 Report the following information:6.1.1 Style, size, color, and manufacturer of the lotevaluated,6.1.2 For continuous production sampl
22、ing, the place ofmanufacture, the time of sampling, the individual mold desig-nation (if pertinent),6.1.3 For lot sampling, the shipment identification, or ware-house location, as pertinent,6.1.4 Sample size, and the number of cases sampled (iffrom lots in cases),6.1.5 Method of taking the specimens
23、, and6.1.6 Results of the evaluation or the disposition of the loton the basis of the sample taken.7. Keywords7.1 glass containers; sampling procedureASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. User
24、s of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every
25、five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technica
26、l committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken,
27、 PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy
28、 the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Minimum Number of Specimens for SampleClassification (Test or Examination to be Madeon Specimen)Continuous Production (Lehr) Lot, Minimum Numberof ContainersMini
29、mum Number Time ScheduleAnnealing 3A3 h or less 20Internal pressure 1 roundB3 h or less 50CThermal shock 1 roundBvariableD50CVisible characteristics not applicableEnot applicableEFDimensional characteristics 1 round variableG50HAThe three containers shall represent both sides and center of lehr.BA “
30、round” is one container from each mold or mold cavity of the forming machine. Test to be made on pieces that have passed visual inspection.CFor a pass test (attribute testing), 50 containers, randomly selected, but representative of the mold cavities present in the lot, shall be tested as the first
31、sample in a doublesampling method, followed, when necessary, by a second sample of 50 containers equally random and representative of all mold cavities present. The acceptance andrejection number shall be chosen from Table X-J-2 of MIL-STD 105 E in accordance with the agreed upon acceptable quality
32、level. Progressive tests (variable testing) shallbe based on a single sample of 50 containers. Test Methods C147 and C149 shall be followed for test details.DBecause of the great variability of potential thermal shock requirements in the trade and the difference in susceptibility to thermal shock of
33、 various designs, the appropriatetime schedule for each situation must be individually determined.EFor this category, a sampling procedure normally is unnecessary since 100 % inspection is usually carried out.FWhen the intention of the sampler is to classify the ware into acceptable and nonacceptabl
34、e categories, it is recommended that sampling agreements be made betweenpurchaser and manufacturer on the basis of MIL-STD 105 E. This method recommends sample sizes on the basis of size of a lot and expected frequency of occurrenceof objectionable deficiencies.GBecause of the great variation in siz
35、es and types and variations in requirements among the various characteristics involved, a definite schedule is impractical. Timingwill depend on the degree of control necessary for the characteristics involved. Typical dimensions are height, diameter, weight, capacity, lettering or decoration (posit
36、ionand size), and the principal dimensions of the finish (closure-holding contours).HFifty containers shall be taken as a first sample, and fifty containers as a second sample, following the principle of Table X-J-2 of MIL-STD 105 E for attribute gaging.A minimum sample of one from each mold cavity represented in the lot shall be taken for measurement by variables.C224 78 (2014)2
