Designation:D7626−19´1StandardTestMethodsforDeterminingtheOrganicTreatLoadingofOrganophilicClay1ThisstandardisissuedunderthefixeddesignationD7626;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—CorrecteddatasheeteditoriallyinAppendixX1inFebruary2020.1.Scope1.1Thisstandardcoverstwoindextestmethodsthatcanbeusedintheevaluationoftheamountoforganiccompoundchemicallybondedtothebaseclayportionofarepresentativesampleoforganophilicclay.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnonconformancewiththisstandard.NOTE1—ThisstandardispresentedusingSIunits.UseofunitsotherthanSIisallowed.However,ifotherunitsareused,theperformanceofaunitsconversioncheckofthecalculationsshouldbeincludedasapartofthecalculations.1.3AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.3.1Twotestmethodsareprovidedinthisstandard.Themethodsdifferinequipment,thesizeofthespecimen(mass)requiredandthesignificantdigitsreported.1.3.2Theproceduresusedtospecifyhowdataarecollected/recordedorcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofthereporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoes...
