PurospherReversed-PhaseHPLCColumns Anultrapuresphericalsilicasupport,deactivatedbyanefficientbondingprocess,makesPurospheranexcellentpackingforbasiccompounds.Multi-stepbondinganddeactivatingprocessesprovidehighsurfacecoverage,blockingresidualsilanolgroupsandreducingpeaktailing.Note:Cartridgecolumnsrequirereusablecartridgehardware,Partnumber5021-1845