Designation:E1377−99(Reapproved2010)StandardSpecificationforLaboratoryGlassKjeldahlFlasks1ThisstandardisissuedunderthefixeddesignationE1377;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationprovidesstandarddimensionalre-quirementsforglassKjeldahlflasksfornitrogendigestionanalysis.2.ReferencedDocuments2.1ASTMStandards:2E147SpecificationforApparatusforMicrodeterminationofNitrogenbyKjeldahlMethodE438SpecificationforGlassesinLaboratoryApparatusE671SpecificationforMaximumPermissibleThermalRe-sidualStressinAnnealedGlassLaboratoryApparatusE694SpecificationforLaboratoryGlassVolumetricAppa-ratusE920SpecificationforCommerciallyPackagedLaboratoryApparatusE921SpecificationforExportPackagedLaboratoryAppa-ratusE1133PracticeforPerformanceTestingofPackagedLabo-ratoryApparatusforUnitedStatesGovernmentProcure-mentsE1157SpecificationforSamplingandTestingofReusableLaboratoryGlassware3.Classification3.1UngraduatedFlasks,TypeI,shallbeofthefollowingcapacities:100mL300mL500mL650mL800mL3.1.1Sizes10mLand30mLandtheSoltysstyle30mLarecoveredunderSpecificationE147andarenotincludedherein.3.2GraduatedFlasks,TypeII,shallbeofthefollowingcapacity:800mL,graduatedat1000mLNOTE1—Thetermmillilitre(mL)iscommonlyusedasaspecialnameforthecubiccentimetre(cm3)andsimilarlythelitre(L)for1000cubiccentimetres,inaccordancewiththeInternationalSystemofUnits(SI).4.MaterialandAnnealing4.1FlasksshallbemadeofborosilicateglassconformingtotherequirementofTypeI,ClassAofSpecificationE438.4.2MaximumresidualthermalstressshallconformtoSpecificationE671.5.Appearance5.1ThegeneralappearanceoftheflasksshallconformtoFig.1.6.Design6.1Necksonallflasksshallbecircularincrosssection,andshallbeperpendiculartocenterofflaskbody.6.2Topfinishofflaskshallnotbebelledover2in.fromthetop.Topshallbetooledorbeaded.6...
