Designation:D7433−13StandardTestMethodforMeasuringSurfaceWaterAbsorptionofOverlaidWood-BasedPanels1ThisstandardisissuedunderthefixeddesignationD7433;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthequan-tityofwaterabsorbedinaspecifiedtimethroughthesurfaceofanoverlaidwood-basedpanel.Thetestmethodmeasurestherateofwatergainwithinacontrolledsurfaceareaoftheoverlaidpanelsurfacewhenexposedtostandingwater.ThemethodwasadaptedfromtheprinciplesofTestMethodD5795.1.2Thistestmethodisapplicabletovariousoverlaidwood-basedpanelsincluding,butnotlimitedto,plywood(suchasMDOgradesandHDOgradesreferencedinPS1–09),orientedstrandboard,mediumdensityfiberboard,particleboard,andhardboard.1.3Thistestmethoddoesnotaddresssamplingprocedures,numberofreplicationsnorperformancecriteriasincethosedetailsvarydependinguponthepurposeofthetestingandthetypeofproduct.Themethodisspecifictothepanelsurfaceanddoesnotevaluatewaterabsorptionoredgeswellthatmayoccuralongpaneledges.Themethoddoesnotconsiderthevariablesrelatedtoin-servicemoistureconditionsandthere-foredoesnotclaimtodirectlyrelatetowaterabsorptionthatmayoccurinactualpanelusesituations.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thistestmethoddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthistestmethodtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D5795TestMethodforDeterminationofLiquidWaterAbsorptionofCoatedHardboardandOtherCompositeWoodProductsVia“CobbRing”ApparatusD4442TestMethodsforDirectMoistureContentMeasure-mentofWoodandWood-BaseMaterials2.2OtherStandards:3PS1–09U.S.Vo...
