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Agilent Technologies

Agilent 1100 Series G1312A Binary Pump

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Agilent 1100 Series G1312A Binary Pump

The G1312A Binary Pump ensures virtually pulse-free and stable solvent flow, with dual floating pistons in series, precisely servo-controlled. This design with variable stroke volume allows pulse-free solvent delivery and efficient mixing. An inlet-valve electronically activated and synchronized to piston stroke-eliminates vapour formation with volatile solvents and is maintenance-free. With high-speed proportioning valve and pre-configured vacuum degasser, for convenient low-pressure mixing of up to four solvents and highest flexibility in solvent choices.

This item was removed from a research laboratory as surplus to requirements.



  • Ease-of-use – handheld control module lets you enter operating parameters fast, store methods easily and display pressure profile, diagnostics, and task-oriented information.
  • Durable – stainless steel, titanium, gold, ruby, sapphire, ceramics, PEEK and PTFE ensure long lifetime. Seal wash option for high salt mobile phases keeps maintenance to a minimum for lower operation costs.
  • Wide flow range – up to 10 ml/min for broad HPLC work, including semi-preparative separations.
  • Better for GLP – built-in leak and pressure test with graphical presentation of pressure profiles, and early maintenance feedback.

Technical Specifications

  • Flow Precision: <0.3 % RSD (typically <0.15 % RSD)
  • Flow Range: Setpoints from 0.001 to 5.0 ml/min,  in 0.001 ml/min increments
  • Operating range: 0 – 40 MPa (0 – 400 bar, 0 – 5880 psi)
  • Pulsation: <2 % amplitude (typically <1 %) at 1 ml/min isopropanol at all pressures >1 MPa (> 10 bar, >147 psi)
  • Compressibility compensation: User selectable, based on mobile phase compressibility
  • Delay volume: 180 – 480 µl (600-900 µl with mixer) dependent on back pressure
  • Recommended pH range: 1.0 – 12.5. Solvents with pH <2.3 should not contain acids which attack steel
  • GLP Features: Electronic records of maintenance and errors.
    Early maintenance feedback (EMF) for
    continuous tracking of instrument usage, display of feedback messages if preset limits are exceeded.



Item has seen previous use but is in good condition.


For further technical specifications, please refer to the manual: