informationgiveninthisnoticemustbeunderstoodtobewithoutcommitmentonourpart.GELATINTESTMETHODSTITLEREFERENCEViscosityat6.67%,60°C60.7°CONOFFA.1.A.2.A.2.A.2.A.2.A.B.B.1.B.2.B.3.C.1.PrincipleTheviscosityofa6.67%solutionofgelatinisdeterminedat60°Cbymeasuringtheflowtimeof100mlofthesolutionthroughastandardpipette.2.DefinitionTheviscosityofgelatinisdefinedasitsdynamicviscosity,expressedinmPas,whentestedasa6.67%solutioninwaterat60°C.3.Equipment3.1PipetteA100mlpipettewithaprecisioncapillaryoutletandanupperandlowermarkontheglass3.2ThermostaticbathThermostaticbathforthepipettewithathermostaticdeviceforstirringandheating(60°C+/-0.1)3.3PrecisionthermometerPrecisionthermometer,graduatedin0.1°Cincrements,withalongslimstemformeasuringtemperatureinsidethepipettePUBLISHEDMODIFIEDPAGETechnicalsupportJully20071/23.4StopwatchStopwatchwithaprecisionof0.1s3.5ThermostaticwaterbathThermostaticwaterbathforsamplepreparation,heldat65°C+/-23.6BalanceBalancewithsensitivityof0.01g4.ProcedureWeigh7.50g(+/-0.01g)gelatinintoa150mlbottleadd105ml(+/-0.2)water.Stiruntilallgelatinismoistened,coverthebottlewitharubberstopperandallowthesampletostandatroomtemperaturefor1to4hours.Placethebottlesinthe65°Cwaterbathforabout20minutestodissolvethesamples.Ahomogeneoussolutionisobtainedbyshakingthebottles.Whenthetemperatureofthesolutionreaches61–62°Candthegelatiniscompletelydissolved,removethethermometerandtransferthesolutiontotheviscositypipette.Whenthetemperatureinthepipettehasreached60°C,themeasurementcanbestarted.Readandrecordtheprecisetimerequiredforthe100mlsolutiontopassfromtheuppertothelowermarkofthepipette.5.ResultsTheviscosityiscalculatedfromtheequation:V=(Axt–B/t)xdForgelatinat6.67%,60°C,d=1.001AandBarethepipetteconstantswhicharecalculatedusingtwostandardoilsofdifferentviscosity:t1xt2(V2xt1–V1xt2)B=____________________t22–t12V1+B/t1V2+B/t2A=____________=____________t1t2V1=kinematicviscosityoflowerviscosit