Agilent 1260 Infinity II Binary Pump G7112B
The binary pump comprises two identical pumps integrated into one housing.
Binary gradients are created by high-pressure mixing. A built-in degasser is
available for applications that require best flow stability, especially at low flow
rates, for maximum detector sensitivity. Pulse damper and mixer can be
bypassed for low flowrate applications or whenever a minimal transient volume
is desirable. Typical applications are high throughput methods with fast
gradients on high resolution 2.1 mm columns. The pump is capable of delivering
flow in the range of 0.1 – 5 mL/min against up to 600 bar. A solvent selection
valve (optional) allows to form binary mixtures (isocratic or gradient) from one of
two solvents per channel. Active seal wash (optional) is available for use with
concentrated buffer solutions.
Type Specification Comments
Hydraulic system Two dual piston in series pumps with
servo-controlled variable stroke drive,
power transmission by gears and ball
screws, floating pistons
Designed for use with Intuitive User Interface, Automated
Agilent InfinityLab Assist Workflows, Predictive Maintenance &
Assisted
Troubleshooting
Flow range settable: 0.001 – 5 mL/min Set points in 0.001 mL/min increments
recommended: 0.05 – 5.0 mL/min
Flow precision ≤ 0.07 % RSD or < 0.02 min SD, whichever Based on retention time at
is greater constant temperature
Flow accuracy ± 1 % or 10 µL/min, whichever is greater Pumping degassed H2O at
10 MPa (100 bar, 1450 psi)
Pressure operating
range Up to 60 MPa (600 bar, 8702 psi) up to
5 mL/min
Pressure pulsation < 2 % amplitude (typically < 1.3 %), or
< 0.3 MPa (3 bar, 44 psi), whichever is
greater
Low delay volume configuration: < 5 %
amplitude (typically < 2 %)
Compressibility
compensation Pre-defined, based on mobile phase
compressibility
Recommended pH
range 1.0 – 12.5 Solvents with pH < 2.3 should
not
contain acids that attack
stainless steel
Gradient formation High-pressure binary mixing
Delay volume Standard delay volume configuration: Measured with water at 1 mL/min
600 – 900 µL, (includes 400 µL mixer), (water/water with tracer)
dependent on back pressure
Low delay volume configuration: 120 µL
Composition range Settable: 0 – 100 %
Recommended:
1 – 99 % or 5 µL/min per
channel, whichever
is greater
Composition precision < 0.15 % RSD or < 0.04 min SD, whichever At 0.2 and 1 mL/min; based on
is greater retention time at constant
temperature
Composition accuracy ± 0.35 % absolute At 2 mL/min, at 10 MPa
(100 bar, 1450 psi) (water/
water with tracer)
Integrated degassing
unit Number of channels: 2
Internal volume
per channel: 0.45 mL
Instrument control LC & CE Drivers A.02.14 or above
Instrument
Control Framework (ICF)
A.02.04 or above
Lab Advisor software B.02.08 or above
InfinityLab
Assist (G7180A) with firmware
D.07.40 or above
Instant Pilot (G4208A) with firmware
B.02.20 or above