331/332 HPLC Pumps


Reliable and affordable semi-preparative multi-solvent pumps.

Semi-preparative, multi-solvent pumps designed for use in Gilson's HPLC Systems accommodating flow rates ranging from 0.5mL/min to 50 mL/min at pressures up to 8,700 psi (600 bar) and with columns up to 30 mm ID.

TRILUTION LC software  |  Analytical to Semi-Preparative HPLC System

Dual-piston pumps for semi-preparative and preparative chromatography. Feature a variable-volume, dynamic mixer for optimized gradient performance.

  • Milligram-level sample mass throughput per injection: >50 mg with a 20 mm ID column
  • Easy linear transposition from analytical to preparative HPLC methods on a 4 to 20 mm ID column packed with high-efficiency stationary phases
  • Solvent selection on each pump with optional four-solvent valve (up to eight solvents)
  • Control from 331 Master Pump: flow-rate gradient, four-solvent selection and step gradient (additional valve), composition gradient (one or two additional pumps), sample-injection pump, UV/VIS detector, and electrical input/output contacts with any other associated equipment
  • Keypad control: safety files (pressure limits, emergency signal and power failure); anomaly processing procedures with related outcomes; GLP functions: solvent consumption, diagnostic helps, maintenance logs, leak test, piston seal installation, mixing test and audit trail
  • TRILUTION® Software provides control within a complete prep workstation; includes data processing and results reporting


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