StorageConditions | Maintainunopenedvialat-70°Cforupto6months.Avoidrepeatedfreeze/thawcycles.
Theantibodymustbe"rehydrated"priortouse: Torehydrate/reconstitutetheantibody,centrifugetheantibodyvialatmoderatespeed(5,000rpm)for5minutestopellettheprecipitatedantibodyproduct.Carefullyremovetheammoniumsulfate/PBSbuffersolutionanddiscard.Itisnotnecessarytoremovealloftheammonium sulfate/PBSsolution:10mLofresidualammoniumsulfatesolutionwillnoteffecttheresUSPensionoftheantibody.Donotlettheproteinpelletdry,asseverelossofantibodyreactivitycanoccur.
ResuspendtheantibodypelletinanysuitableBIOLOGicalbuffer,standardPBSorTBS(pH7.3-7.5)aretypical.Volumesrequiredarenotcriticalbutitissuggestedthatthefinalantibodyconcentrationbebetween0.1mg/mLand1.0mg/mL.Forexample,toachievea1mg/mLconcentrationwith50mgofprecipitatedantibody,theamountofbufferneededwouldbe50mL.
Carefullyaddtheliquidbuffertothepellet.DONOTVORTEX.Mixbygentlestirringwithawidepipettiporgentlefinger-tapping.Lettheprecipitatedantibodyrehydratefor1hourat4-25C°priortouse.Smallparticlesofprecipitatedantibodythatfailtoresuspendarenormal.Vialsareoverfilledtocompensateforanylosses.
Therehydratedantibodycanbestoredat: 2-8°CTherehydratedantibodysolutionscanbestoredundilutedat2-8C°for2monthswithoutanysignificantlossofactivity.Note,thesolutionisnotsterile,thuscareshouldbetakenifproductisstoredat2-8C°.
-20°CForstorageat-20°C,theadditionofanequalvolumeofglycerolcanbeused,however,itisrecommendedthatACSgradeorhigherglycerolbeused,assignificantlossofactivitycanoccuriftheglycerolusedisnotofhighquality.
-70°CForfreezing,itisrecommendedthattherehydratedantibodysolutionbefurtherdiluted1:1witha2%BSA(fractionV,highest-gradeavailable)solutionmadewiththerehydrationbuffer.Theresulting1%BSA/antibodysolutioncanbealiquotedandstoredfrozenat-70C°forupto6months.Avoidrepeatedfreeze/thawcycles. |