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Hydraulic System
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Two dual piston in series, with proprietary
servo-controlled variable stroke drive, floating piston, active inlet valve,
solvent selection valve and electronic flow control for flow rates up to 100
µl/min
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Settable Column Flow Range
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0.01 – 20 µl/min
0.01 – 100 µl/min (with the extended flow range kit)
0.001 – 2.5 µl/min (with the electronic flow control bypassed)
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Recommended Column Flow Range
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1 – 20 µl/min
10 – 100 µl/min (with extended flow range kit)
0.1 – 2.5 ml/min (with the electronic flow sensor bypassed)
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Column Flow Precision
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< 0.7 % RSD or 0.03 % SD (typically 0.4 % RSD or 0.02 % SD), at 10
µl/min and 50 µl/min column flow (based on RT, default setting)
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Optimum Composition Range
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1 to 99% or 5 µl/min per channel (primary flow), whatever is greater
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Composition Precision
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< 0.2 % SD, at 10 µl/min (20 µl flow sensor), 50 µl/min (100 µl
flow sensor) and 1 ml/min (normal mode) default setting
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Delay Volume
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Typically 3 µl from the electronic flow control to the pump outlet
for flow rates up to 20 µl/min.
Typically 12 µl from the electronic flow control to the pump outlet
for flow rates up to 100 µl.
for flow rates up to 100 µl/min and electronic flow control active: primary
flow path 180 - 480 µl without mixer, 600 - 900 µl with mixer (system
pressure dependant)
Typically 180 to 480 µl (system pressure dependent) without mixer for
flow rates up to 2.5 ml/min. (Mixer delay volume 420 µl)
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Pressure Range
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20 to 400 bar (5880 psi) system pressure
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Compressibility Compensation
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User-selectable, based on mobile phase compressibility
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Recommended pH Range
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1.0 – 8.5, solvents with pH < 2.3 should not contain acids which
attack stainless steel. Upper pH range is limited by fused silica
capillaries.
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Control and Data Evaluation
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Agilent ChemStation for LC
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Analog Output
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For pressure monitoring, 2 mV/bar, one output
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Communications
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Controller-area network (CAN), GPIB, RS-232C, APG Remote: ready, start,
stop and shut-down signals, LAN optional
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Safety and Maintenance
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Extensive diagnostics, error detection and display (through control module
and Agilent ChemStation), leak detection, safe leak handling,
leak output signal for shutdown of pumping system. Low voltages in major
maintenance areas.
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GLP Features
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Early maintenance feedback (EMF) for continuous tracking of instrument
usage in terms of seal wear and volume of pumped mobile phase with
user-settable limits and feedback messages. Electronic records of maintenance
and errors.
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Housing
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All materials recyclable.
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