1290 Infinity II High-Speed Pumps User Manual 27
2 Site Requirements and Specifications
Performance Specifications
Performance Specifications
Performance Specifications Agilent 1290 Infinity II
High-Speed Pump (G7120A)
Table 3 Performance Specifications G7120A
Type Specification Comments
Hydraulic system Two dual pistons in series pump
with proprietary servo-con-
trolled variable stroke design
and smooth motion control for
active damping.
Pump resolution step size 300 pL
Flow range Settable: 0.001 – 5 mL/min, in
0.001 mL/min increments (exe-
cuted in 300 pL/step incre-
ments)
Flow precision ≤0.07 % RSD or 0.01 min SD,
whichever is greater
Based on retention time at con-
stant temperature
Flow accuracy ±1% or ±10 µL/min, whichever
is greater
Pressure operating range Up to 130 MPa (1300 bar) at
0–2mL/min
ramping down to 80 MPa
(800 bar) at 5 mL/min
Pressure pulsation <1 % amplitude or <0.5 MPa
(5 bar), whichever is greater
Compressibility compensation Automatic
Recommended pH range 1.0 – 12.5 Solvents with pH <2.3 should
not contain acids which attack
stainless steel
Gradient formation High-pressure binary mixing
Delay volume As low as 45 µL (10 µL without
mixer)
Composition range 0 – 100 %