Adjusting Compressibility - Agilent Technologies G1323B User Manual

3 Using the Pump

Adjusting Compressibility

Adjusting Compressibility

Liquid chromatographic solvents are compressible under pressure. This
solvent compressibility produces a change in flow rate as the pressure
changes. To compensate for this effect, you can use the pump compressibility
setting to maintain a uniform and accurate flow regardless of the system
pressure. The compressibility setting can be accessed by using the Pump
Settings button [F1] in the Analysis screen.
Table 3
Table 3
Solvent
Acetone
Acetonitrile
Benzene
Carbon tetrachloride
Chloroform
Cyclohexane
Ethanol
Ethyl acetate
Heptane
Hexane
Isobutanol
Isopropanol
Methanol
1-Propanol
Toluene
Water
66
lists compressibility values for common solvents used in LC.
Compressibility Values for Common LC Solvents
Compressibility (10
126
115
95
110
100
118
114
104
120
150
100
100
120
100
87
46
-6
per bar)
1200 Series Handheld Control Module Users's Guide