【英文标准名称】:Fruitjuice;Determinationofsolublesolidscontent;Pycnometricmethod
【原文标准名称】:果汁可溶性固形物含量的测定比重瓶法
【标准号】:ISO2172-1983
【标准状态】:现行
【国别】:国际
【发布日期】:1983-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;农产品;水果汁;固体;水果蔬菜产品;蔬菜;水果;可溶物质;含量测定;食糖;比重瓶测量分析法
【英文主题词】:Agriculturalproducts;Determinationofcontent;Fruitjuices;Fruits;Solids;Sugar(food);Testing;Tests;Vegetables
【摘要】:Themethodconsistsinmeasuringoftherelativedensityofatestportionat20Cusingapyknometer,andconversing,usingatable,oftherelativedensitysintothesolublesolidscontentexpressedassucrose.Itisapplicabletoproductscontainingnosuspendedmatterandtoclearconcentratedproducts.ForotherfruitandvegetableproductsthemethodspecifiedinISO2173shouldbeused.
【中国标准分类号】:X50
【国际标准分类号】:67_160_20
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforUseofProcessOrientedAOQLandLTPDSamplingPlans
【原文标准名称】:使用过程导向的平均质量检查最低限和批量允许不良率的抽样方案的标准实施规程
【标准号】:ASTME1994-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E11.30
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:averageoutgoingqualitylimit;lottolerancepercentdefective;sampling;samplingplans;AOQL(averageoutgoingqualitylimit)--samplingplans;Doublesamplingtable;LTPD(lottolerancepercentdefective);Sampling;Samplingdataanalysis/statistics;S
【摘要】:Twogeneraltypesoftables(Note1)aregiven,onebasedontheconceptoflottolerance,LTPD,andtheotheronAOQL.Thebroadconditionsunderwhichthedifferenttypeshavebeenfoundbestadaptedareindicatedbelow.Foreachofthetypes,tablesareprovidedbothforsinglesamplingandfordoublesampling.Eachoftheindividualtablesconstitutesacollectionofsolutionstotheproblemofminimizingtheover-allamountofinspection.Becauseeachlineinthetablescoversarangeoflotsizes,theAOQLvaluesintheLTPDtablesandtheLTPDvaluesintheAOQLtablesareoftenconservative.Note18212;TablesinAnnexA1-AnnexA4andpartsofthetextarereproducedbypermissionofJohnR.WileyandSons.Moreextensivetablesanddiscussionofthemethodswillbefoundinthattext.Thesamplingtablesbasedonlotqualityprotection(LTPD)(thetablesinAnnexA1andAnnexA2)areperhapsbestadaptedtoconditionswhereinterestcentersoneachlotseparately,forexample,wheretheindividuallottendstoretainitsidentityeitherfromashipmentoraservicestandpoint.Thesetableshavebeenfoundparticularlyusefulininspectionsmadebytheultimateconsumerorapurchasingagentforlotsorshipmentspurchasedmoreorlessintermittently.Thesamplingtablesbasedonaveragequalityprotection(AOQL)(thetablesinAnnexA3andAnnexA4)areespeciallyadaptedforusewhereinterestcentersontheaveragequalityofproductafterinspectionratherthanonthequalityofeachindividuallotandwhereinspectionis,therefore,intendedtoserve,ifnecessary,asapartialscreenfordefectivepieces.Thelatterpointofviewhasbeenfoundparticularlyhelpful,forexample,inconsumerinspectionsofcontinuingpurchasesoflargequantitiesofaproductandinmanufacturingprocessinspectionsofpartswheretheinspectionlotstendtolosetheiridentitybymergerinacommonstoreroomfromwhichquantitiesarewithdrawnonorderasneeded.Theplansbasedonaveragequalityprotection(AOQL)considerthedegreetowhichtheentireinspectionprocedurescreensoutdefectivesintheproductsubmittedtotheinspector.Lotsacceptedbysampleundergoapartialscreeningthroughtheeliminationofdefectivesfoundinsamples.Lotsthatfailtobeacceptedbysamplearecompletelyclearedofdefectives.Obviously,thisrequiresanondestructivetest.Theover-allresultissomeaveragepercentdefectiveintheproductasitleavestheinspector,termedtheaverageoutgoingquality,whichdependsonthelevelofpercentdefectiveforincomingproductandtheproportionoftotaldefectivesthatarescreenedout.Givenaspecificproblemofreplacinga100%screeninginspectionbyasamplinginspection,thefirststepistodecideonthetypeofprotectiondesired,toselectthedesiredlimitofpercentdefectivelottolerance(LTPD)orAOQLvalueforthattypeofprotection,andtochoosebetweensingleanddoublesampling.Thisresultsintheselectionofoneoftheappendedtables.Thesecondstepistodeterminewhetherthequalityofproductisgoodenoughtowarranttheintroductionofsampling.Theeconomiesofsamplingwillberealized,ofcourse,onlyinsofarasthepercentdefectiveinsubmittedproductissuchthattheacceptancecriteriaoftheselectedsamplingplanwillbemet.Astatisticalanalysisofpastinspectionresultsshouldfirstbemade,therefore,inordertodetermineexistinglevelsandfluctuationsinthepercentdefectiveforthecharacteristicorthegroupofcharacteristicsunderconsideration.Thisprovidesinformationwithrespecttothedegreeofcontrolaswellastheusuallevelofpercentdefectivetobeexpectedunderexistingconditions.Determineavaluefromthisandotherinformationfortheprocessaverage