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Specification
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Eluent Selection
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Four different mobile phase components; each can be proportioned from 0-100%
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Pump
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Dual-piston, variable speed, 100 µL (standard bore), 25 µL(microbore) stroke, user-selectable constant pressure or constant flow feedback control
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Flow Rate
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Standard bore pump head: 0.04 to 10.0 mL/min, linearly variable in increments of 0.01 mL/min
Microbore pump head: 0.01 to 2.50 mL/min, linearly variable in increments of 0.01 mL/min
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Operating Pressure
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35 MPa (5000 psi) maximum
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Pressure Resolution
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0.07 MPa (10 psi)
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High Pressure Limit
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0 to 35 MPa (0-5000 psi) in increments of 0.05 MPa (7.25 psi); trips instantaneously
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Low Pressure Limit
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0. to 35 MPa (0 to 5000 psi) in increments of
0.05 MPa (7.25 psi); trips after a time-out of 0.4 mL for thestandard bore GP40 or 0.1 mL for the microbore GP40
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Delay Volume
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Approximately 0.92 mL for standard bore pump heads or 0.72 mL for microbore pump heads, measured from the proportioning valve up to, and including, the 61-cm (24-in) pressure transducer outlet line
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Channels
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4-channel membrane vacuum degas
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Materials
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Wetted materials, PEEK, PTFE
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Performance
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>69% degas ratio @ 1 or 3 mL/min with 8.5 ppm O2 at input 0.200 Kg F/cm2 flow resistance @ 10 mL/min
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This refurbished DIONEX GP40 Gradient Pump. It has been tested at SpectraLab Scientific.
A 90-day warranty is included. Multiple available.
