Tosoh Bioscience HPLC Guard Cartridge TSKgel ODS-120A, 150 Å Silica, 3,2 x 15 mm, 3 pc/PAK

TSKgel ODS-120A and 120T provide a similar separation at low pH for a mixture of catecholamines, while at pH 6.0 the basic solutes interact with negatively charged residual silanol groups on ODS-120A, but not on the endcapped ODS-120T.