Designation:D6535/D6535M−18StandardPracticeforDeterminingtheDipTubeLengthofaMechanicalPumpDispenser1ThisstandardisissuedunderthefixeddesignationD6535/D6535M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthedeterminationtechniqueforadiptubeofamechanicalpumpdispenser.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SignificanceandUse2.1Thispracticeistobeusedtodeterminethelengthofadiptubeofamechanicalpumpdispenserthatextendstothebottom-cornerofacontainer.2.2Thispracticeistobeusedtodeterminethelengthofadiptubeofamechanicalpumpdispenserthatextendstothebottom-centerofacontainer.3.Apparatus3.1ThinMetalRuler,withminimumgradientsofonemillimeterand/or1⁄16in.alongwithazeroindexattheendoftheruler.3.2Calipers.4.ProcedurePRACTICE“A”—DIPTUBELENGTHDETERMINATIONTOTHEBOTTOM-CORNEROFTHECONTAINERNOTE1—Thispracticeisusedwhenthediptubeofamechanicalpumpdispensermustextendtothebottom-cornerofacontainer.4.1Placethezero-indexendoftherulerintothecontainerasshowninFig.1.4.2Turntherulersothatthesideofthe...
