Profile: Sonntek, Inc. supplies HPLC systems, isocratic or gradient pumps, high-sensitivity absorption detectors, autosamplers and UV Lamps. We also offer valves, degassers and column ovens. We offer lamps for ABI-PE, Beckman, Hitachi, HP, Shimadzu, TSP, and Waters. We offer dual-piston, hi-low mixing, and isocratic quaternary pumps. Our liqid chromatography systems include amino acid, multidimensional systems, on-line analyzers, parallel chromatography, partition chromatography equipment, preparative, process, simulated moving bed and size-exclusion.