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
Settable column flow Range
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)
Recommended column flow range
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)
Column flow precision
< 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)
Optimum composition Range
1 to 99% or 5 µl/min per channel (primary flow), whatever is greater
< 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
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 dependent)
Typically 180 to 480 µl (system pressure dependent) without mixer for flow rates up to 2.5 ml/min. (Mixer delay volume 420 µl)
20 to 400 bar (5880psi) system pressure
User-selectable, based on mobile phase compressibility
Recommended pH Range
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.
Control and data Evaluation
Agilent ChemStation for LC
For pressure monitoring, 2 mV/bar, one output
Controller-area network (CAN), GPIB, RS-232C, APG Remote: ready, start, stop and shut-down signals, LAN optional
Safety and maintenance
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.
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.
All materials recyclable