P230 high-pressure pump: 2 PCS UV230 + UV/VIS detector: 1 piece Rheodyne 7725I high-pressure 6-port injector: 1 piece BETASIL C18 5 μ M ID4.6 x 200mm column: 1 piece EC2000 single channel chromatographic data-processing workstation: 1 unit P230 control interface: 1 unit Gradient mixer: 1 piece.