Designation:D2423−90(Reapproved2012)´1StandardTestMethodforSurfaceWaxonWaxedPaperorPaperboard1ThisstandardisissuedunderthefixeddesignationD2423;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Removedincorrectlessthansymbolfrom11.1.1editoriallyinNovember2012.1.Scope1.1Thistestmethodcoversdeterminationoftheweightofwaxonthesurfaceofwaxedpaper.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D585PracticeforSamplingandAcceptingaSingleLotofPaper,Paperboard,Fiberboard,andRelatedProduct(Withdrawn2010)3D646TestMethodforGrammageofPaperandPaperboard(MassPerUnitArea)(Withdrawn2010)33.Terminology3.1Definitions:3.1.1basisweightofpaper,n—basisweightisexpressedingramspersquaremetre.Incountrieswherethemetricsystemisnotuniversal,basisweightisalsoexpressedinpoundsperream.3.1.2reamofpaper(newsandwrapping),n—500sheetseach610by914mm(24by36in.).3.1.2.1Discussion—Forfactorstoconvertbasisweightingramspersquaremetretoothercommercialreams,seeTestMethodD646.4.SummaryofTestMethod4.1Thequantityofwaxpresentasasurfacefilmonpaperorpaperboardisdeterminedthroughthedifferenceinweightofspecimensbeforeandafterscrapingwitharazorblade.5.SignificanceandUse5.1Manyofthefunctionalpropertiesofwaxedpaperandpaperboardarerelatedtotheamountofwaxpresentasasurfacefilm.Testmethodswhichdeterminewaxloadbysolventextractiondonotdifferentiatebetweenthewaxpresentasasurfacewaxlayerandthatwhichhaspenetratedintothesubstrate.Thistestmethod,whichmechanicallyremovesthewax,measu...
