GE AKTApure, User Manual, Page: 251 / 522

Faulty Conductivity Test Result
Action Cause
See Conductivity monitor, on page 367. Faulty Conductivity monitor
Make sure that the NaCl solution is 1.00 M. Incorrectly prepared NaCl
solution
If the test is performed at cold room temperature, open the System
Settings dialog, select Conductivity:Cond temp compensation and
set the Compensation factor to 2.1 The value set for the Cond
temp compensation factor is
not optimal
Faulty UV Noise Test
Action Cause
Flush or clean the UV cell, see Section 7.5.1 Clean the UV flow cell,
on page 273. Air or dirt in the UV flow cell
Check buffers for impurities. Impure buffer
Faulty Pressure Check Test
Action Cause
Check the tubing. Folded, twisted or blocked
tubing
Replace the inline filter, see Section 7.3.2 Replace the inline filter, on
page 266. Dirt in inline filter
Calibrate the pressure monitor, see Section 7.7.2 Calibrate the pres-
sure monitors, on page 305. System pressure monitor not
calibrated
ÄKTA pure User Manual 29119969 AB 251
6 Performance tests
6.10 System Test UV U9-M (variable)