The Model 540G is a complete high pressure gradient HPLC system.  The system includes two pumps and all necessary electrical and plumbing connections.  UHPLC (Maximum pressure: 15,000 PSI) is available for Micro and Analytical flow.  Also Titanium pump heads and Biocompatible PEEK pump heads are available for all flow ranges.  

Self-priming Pump Head
  • Integral prime/purge
  • Rapid solvent changes
  • Pump primes--solvent, any flow rate
Patented Floating Pump Seal
  • Seal floats in alignment relative to piston
Intuitive touch screen
  • Pump touch screen control, Run methods from touch screen
  • Included GUI application for computer control
  • Rebust open Modbus RTU for OEM control
Programming Methods Capabilities
  • Gradient methods or flow programs are possible.  Methods are programmed by Modbus or GUI and saved to the pump controller.  Saved methods can be run by GUI, Modbus or pump touchscreen.  Up to 500 method steps can be stored in each individual pump.  The longest possible step time interval is 60,000 seconds.  The steps can be distributed between as many or as few program methods as desired. 
USB-serial connection
Solvent Compressibility Compensation User
  • User can select from a library of 15 solvents
  • Fourteen additional user-configured solvents
Easy Maintenance
  • All user serviceable components are accessed via the front panel
  • Cartridge seal design makes seal replacement easy


CE Mark