Designation:E100−15StandardSpecificationforASTMHydrometers1ThisstandardisissuedunderthefixeddesignationE100;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversglasshydrometersofvariousscalegraduationsystems,asrequiredbytheASTMTestMethodsinwhichtheyareused.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D287TestMethodforAPIGravityofCrudePetroleumandPetroleumProducts(HydrometerMethod)D1250GuideforUseofthePetroleumMeasurementTablesD3290SpecificationforBondandLedgerPapersforPerma-nentRecords(Withdrawn2010)3E1SpecificationforASTMLiquid-in-GlassThermometersE77TestMethodforInspectionandVerificationofTher-mometersE126TestMethodforInspection,Calibration,andVerifica-tionofASTMHydrometersE344TerminologyRelatingtoThermometryandHydrom-etryE2251SpecificationforLiquid-in-GlassASTMThermom-eterswithLow-HazardPrecisionLiquids3.Terminology3.1Definitions—ThedefinitionsgiveninTerminologyE344apply.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1ledgerpaper,n—apapercharacterizedbystrength,hightearingresistance,eraseability,waterresistance,inkreceptivity,uniformityofsurface,andsmoothness.3.2.1.1Discussion—Originally,ledgerpaperwasusedespe-ciallyforpenandinkrecords.Mostledgerpapersaresurfacesized,frequentlysubjectedtoappreciablewear,andshallhaveahighdegreeofpermanenceanddurability.3.2.2lengthofthescale,n—lengthofthenominalrangeinthestem,notincludinggraduationsextendingaboveandbelowthenominallimits.3.2.3relativedensity(formerlyspecificgravity),n—ra...
