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- [41] HPLC sample processor. Double syringe pump. Basic balance series. Electrophoretic protein fractionator. Cell culture incubator. Light-scattering detectors. Degassing systems for HPLC. Thermal desorption system. HPCPC column module. Time-of-flight mass spectrometers. PCB residue test kit. Programmable ultrasonic homogenizer. Liquid-liquid extractor. GC/MS for toxic air analysis. Process scale columns and gels. Freeze dryer. Thermal analysis system Science, 1992, 255 (5047)