LiChrosorbReversed-PhaseHPLCColumns LiChrosorbisawidelyusedsilicapackingmaterialmanufacturedbyE.Merck.Theirregularlyshapedporoussilicaparticlesaremadebygrindingandsiftingcoarsesilicaparticlesintonarrowparticlesizeranges.AgilentoffersLiChrosorbcolumnsinC8andC18phasesandinboth5and10umparticlesizes.ThesestandardfittingcolumnsarepackedbyAgilentusingISO-regulated,automatedpackingprocedurestoensurehighcolumn-to-columnreproducibility.