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A unique C18 phase with high steric selectivity • C18 phase with special polymeric surface modification • particle sizes 1.8 µm, 3 µm and 5 µm • exceptional steric selectivity • outstanding surface deactivation • pH stability 1 – 10 • broad range of applications: steroids, (o,p,m-) substituted aromatics, fat-soluble vitamins, positional isomers Surface modification By use of specific C18 silanes and appropriate polymeric bondi…