Designation:E1189−00(Reapproved2010)StandardSpecificationforMicro-Burets(KochStyle)1ThisstandardisissuedunderthefixeddesignationE1189;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverstwostylesofglassmicro-buretsofthe“Koch”typeforgenerallaboratoryuse.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2E438SpecificationforGlassesinLaboratoryApparatusE675SpecificationforInterchangeableTaper-GroundStop-cocksAndStoppersE676SpecificationforInterchangeableTaper-GroundJointsE677SpecificationforInterchangeableSphericalGroundJointsE694SpecificationforLaboratoryGlassVolumetricAppa-ratusE911SpecificationforGlassStopcockswithPolytetrafluo-roethylene(PTFE)PlugsE920SpecificationforCommerciallyPackagedLaboratoryApparatusE921SpecificationforExportPackagedLaboratoryAppa-ratusE1133PracticeforPerformanceTestingofPackagedLabo-ratoryApparatusforUnitedStatesGovernmentProcure-mentsE1157SpecificationforSamplingandTestingofReusableLaboratoryGlassware3.GeneralRequirements3.1Material—BuretsshallbemadefromTypeI,ClassAorBglassasspecifiedinSpecificationE438.3.2Stopcocks—BothburetsshallhavepermanentlyattachedstopcockswitheitherglassplugsconformingtoSpecificationE675orPTFEplugsconformingtoSpecificationE911.3.3JointsandStoppers—Alljointsandstoppersshallcom-plywiththerequirementsofSpecificationsE675,E676,orE677.3.4Graduation—Thegraduatedsectionshallbeincompli-ancewithPatternIofSpecificationE694.4.Design4.1StyleI:4.1.1StyleIshallbeincompliancewithTable1andFig.1.4.1.2Thisstyleshallbeequippedwithadetachabletipwitheithera7/25jointoraSJ12/5joint.4.1.3Reservoirandgraduatedsectionshallbesecuredtoeachothertocushionagainstbreakageduringtransitandinuse.Typicalarrangementsare...
