Agilent InfinityLab LC Series 1260 Infinity II Isocratic- and Quaternary Pumps User Manual 43
Site Requirements and Specifications
2
Performance Specifications
Performance Specifications Agilent 1260 Infinity II Quaternary
Pump VL (G7111A)
Table 6 Performance Specifications Agilent 1260 Infinity II Quaternary Pump VL
(G7111A)
Type Specification
Hydraulic system Dual piston in series pump with servo-controlled variable stroke drive,
power transmission by gears and ball screws, floating pistons
Settable flow range Set points 0.001 – 10 mL/min, in 0.001 mL/min increments
Recommended flow
range
0.2 – 10.0 mL/min
Flow precision ≤0.07 % RSD, or ≤0.02 min SD whatever is greater, based on retention
time at constant room temperature
Flow accuracy ± 1 % or 10 µL/min whatever is greater, pumping degassed H
2
O at
10 MPa (100 bar)
Pressure operating
range
Operating range up to 40 MPa (400 bar, 5880 psi) up to 5 mL/min
Operating range up to 20 MPa (200 bar, 2950 psi) up to 10 mL/min
Pressure pulsation < 2 % amplitude (typically < 1.0 %), or < 0.3 MPa (3 bar, 44 psi),
whatever is greater, at 1 mL/min isopropanol, at all pressures > 1 MPa
(10bar, 145psi)
Compressibility
compensation
User-selectable, based on mobile phase compressibility
Recommended pH
range
1.0 – 12.5, solvents with pH < 2.3 should not contain acids which
attack stainless steel
Gradient formation Low pressure quaternary mixing/gradient capability using proprietary
high-speed proportioning valve
Delay volume 600 – 900 µL, dependent on back pressure; measured with water at
1 mL/min (water/caffeine tracer)
Settable composition
range
0 – 100 % in 0.1 % increments
Composition precision < 0.2 % RSD or < 0.04 min SD, whatever is greater, at 1 mL/min; based
on retention time at constant room temperature
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