Refurbished Dionex GP40/GP-40 (model GP 40-1) Gradient Pump Dual-piston, variable speed, 100 µL stroke. Flow rate - 0.04 to 10.0 mL/min, in increments of 0.01 mL/min. Operating pressure: 35 MPa (5000 psi) maximum. (PEEK and stainless steel options available)
The GP40 Gradient Pump is an integral part of a DX 500 chromatography system. It is a microprocessor-based, dual-piston, variable-speed, gradient delivery system designed to blend and pump mixtures of up to four different mobile phases at precisely controlled flow rates. The pump can deliver the selected mobile phase composition isocratically, or as a multistep linear or curved gradient. A Digital Signal Processor (DSP) provides high speed control of pump flow and pressure. The GP40 can operate as a stand-alone product or with other Dionex modules as part of a complete chromatography system. It can also be used with non-Dionex modules that meet interface requirements for software, TTL, or relay control.
The GP40 can be controlled locally, using the front panel keypad and display, or from a remote host computer with a Dionex DX LANÔ interface installed and PeakNet software installed on the host computer. Limited remote control is also available from any device capable of providing compatible TTL signals to control the pump. The pump's two basic modes of control, Direct control and Method control, enable it to operate with or without reference to time-based events. Please contact us for complete Dionex Chromatography (IC) instrument, warranty and service contract details. (Dionex HPLC)