The dual-piston, multi-solvent 331/332 Pumps are a reliable and affordable option for Gilson’s semi-preparative HPLC systems. The 333/334 Pumps are the ideal choice for preparative HPLC applications in normal and reverse-phase modes. All pumps offer multi-solvent selection, with an optional four-solvent valve that allows up to eight solvents. The pumps feature a variable-volume, dynamic mixer for optimized gradient performance.
333/334 Pumps—The Pumping Choice for Preparative HPLC
The 333/334 Pumps provide a preparative pumping solution to accommodate columns ranging from 10 mm to 50 mm ID in high pressure normal and reverse phases at flow rate from 1 mL/min to 200 mL/min and pressures up to 3040 psi (210 bar). Use milligram to gram injection levels—up to 15 g depending on column size and loading capacity. With additional pumps in parallel, you can double the flow rate up to 400 mL/min. For isocratic methods, choose the 333 master pump; choose the combination of the 333 and 334 Pumps for binary methods.
Control 333/334 Pumps and an entire preparative HPLC system via TRILUTION® LC software. With the 333 Pump as master pump, control:
• Flow-rate gradient
• Four-solvent selection and step gradient (additional valve)
• Composition gradient (one or two additional pumps)
• Sample-injection pump
• UV/VIS detector
