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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
2026 Gilson Product Guide
The latest version of the Gilson Product Guide is now available. Discover best sellers for your Liquid Handling, Purification, and Extraction needs, with links to documents, articles, and other resources that allow you to learn more about our technology and solutions.
Four Digital Inputs; Start/End; Pause/Resume; Input (Wait); Emergency Four Relay Outputs; 12V DC; One Output Channel for Pressure, Flow, or Composition; One Analog Output Channel for Pressure Sensor Reading
Front Panel Control
Yes
Flow Accuracy
±2%
Flow Precision
≤ 0.7% RSD
Voltage
90-260 VAC
Flow Rate Range
Single Pump: 0.2–200 mL/min Two Pumps: 2–200 mL/min
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