DIN 6346-1979 平行块
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来源:标准资料网
【英文标准名称】:Parallels
【原文标准名称】:平行块
【标准号】:DIN6346-1979
【标准状态】:作废
【国别】:德国
【发布日期】:1979-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:公差;材料;尺寸;作标记;夹具;工件夹持装置;钻模
【英文主题词】:dimensions;jigs;marking;tolerances(measurement);fixtures;materials;work-holdingdevices
【摘要】:
【中国标准分类号】:J45
【国际标准分类号】:4225
【页数】:2P;A4
【正文语种】:德语
【英文标准名称】:Measurementofthedensityofmilkusingahydrometer-Specificationforhydrometersforuseinmilk
【原文标准名称】:用流体比重计测定奶的密度.第1部分:奶用流体比重计规范
【标准号】:BS734-1-1973
【标准状态】:现行
【国别】:英国
【发布日期】:1973-10-29
【实施或试行日期】:1973-10-29
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;形状;食品检验;误差修正;划刻度;验证;仪表刻度;流体比重计;乳制品;实验室玻璃器皿;尺寸;调节;密度测量;公差;牛奶;作标记
【英文主题词】:Agriculturalproducts;Dairyproducts;Densitymeasurement;Hydrometers;Milk;Specifications
【摘要】:Hydrometersoftwosizescalibratedtobereadatthetopofthemilkmeniscus.
【中国标准分类号】:X16
【国际标准分类号】:67_100_10
【页数】:20P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminationofPolychlorinatedBiphenyls(PCBs)inWasteMaterialsbyGasChromatography
【原文标准名称】:气相色谱法测定废料中多氯代联苯的标准试验方法
【标准号】:ASTMD6160-1998(2003)e1
【标准状态】:现行
【国别】:
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D02.04.0L
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:气相色谱法;多氯联苯;多氯联苯
【英文主题词】:gaschromatography;GC/ECD;PCBs;polychlorinatedbiphenyls
【摘要】:ThistestmethodprovidessufficientPCBdataformanyregulatoryrequirements.Whilethemostcommonregulatorylevelis50ppm(dryweightcorrected),lowerlimitsareusedinsomelocations.Sincesensitivitieswillvaryfordifferenttypesofsamples,oneshalldemonstrateasufficientmethoddetectionlimitforthematrixofinterest.ThistestmethoddiffersfromTestMethodD4059inthatitprovidesformoresampleclean-upoptions,utilizesacapillarycolumnforbetterpatternrecognitionandinterferencediscrimination,andincludesbothaqualitativescreeningandaquantitativeresultsoption.1.1Thistestmethodisatwo-tieredanalyticalapproachtoPCBscreeningandquantitationofliquidandsolidwastes,suchasoils,sludges,aqueoussolutions,andotherwastematrices.1.2TierIisdesignedtoscreensamplesrapidlyforthepresenceofPCBs.1.3TierIIisusedtodeterminetheconcentrationofPCBs,typicallyintherangeoffrom2to50mg/kg.PCBconcentrationsgreaterthan50mg/kgaredeterminedthroughanalysisofsampledilutions.1.4Thisisapatternrecognitionapproach,whichdoesnottakeintoaccountindividualcongenersthatmightoccur,suchasinreactionby-products.ThistestmethoddescribestheuseorAroclors1016,1221,1232,1242,1248,1254,1260,1262,and1268,asreferencestandards,butotherscouldalsobeincluded.Aroclors1016and1242havesimilarcapillarygaschromatography(GC)patterns.InterferencesorweatheringareespeciallyproblematicwithAroclors1016,1232,and1242andmaymakedistinctionbetweenthethreedifficult.1.5ThistestmethodprovidessamplecleanupandinstrumentalconditionsnecessaryforthedeterminationofAroclors.Gaschromatography(GC)usingcapillarycolumnseparationtechniqueandelectroncapturedetector(ECD)aredescribed.Otherdetectors,suchasatomicemissiondetector(AED)andmassspectrometry(MS),maybeusedifsufficientperformance(forexample,sensitivity)isdemonstrated.FurtherdetailsabouttheuseofGCandECDareprovidedinPracticesE355,E697,andE1510.1.6Quantitativeresultsarereportedonthedryweightsofwastesamples.1.7Quantificationlimitswillvarydependingonthetypeofwastestreambeinganalyzed.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorlimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:14P.;A4
【正文语种】:
