GE AKTApure, User Manual, Page: 310 / 522

Action Step
In the Run Data pane of System Control, read the current Cond temp.
Tip:
If Cond temp is not showing, click the Customize icon. In the Customize dialog, under the
Run Data Groups tab, select to view Cond temp.
9
In the Calibration dialog, enter the theoretical conductivity value at the current conduc-
tivity temperature in the Enter theoretical conductivity value input field. 10
• If a certified conductivity standard solution is used, use the supplied theoretical con-
ductivity value.
• If a manually prepared 1.00 M NaCl calibration solution is used, see the graph for
conductivity value at the current temperature on page 311.
In the Calibration dialog, click Calibrate. 11
Result: The new conductivity cell constant is displayed in the Conductivity cell 1 con-
stant/cm box. The new constant should normally be 40 ± 10 cm
-1
. The date and time for
the calibration are also displayed.
In the System Control toolbar, click the End icon to end the run. 12
In the System Settings dialog, select Conductivity:Cond temp compensation and set
the Compensation factor back to desired value, default 2.0%. Click OK.
Note:
When using NaCl, the optimal compensation factor is 2.1%.
13
310 ÄKTA pure User Manual 29119969 AB
7 Maintenance
7.7 Calibration procedures
7.7.3 Calibrate the Conductivity monitor