Bio-Rad ChromLab™ Software - Manual (Page 156)

A | Maintaining the Instrument
154 | NGC Chromatography Systems and ChromLab Software
As Needed
Tubing and connectors Replace all tubing and connectors.
Pressure monitors Calibrate the monitors. Start ChromLab
software and select Tools > Calibrate.
Complete the calibration steps in the dialog
box.
pH electrode Check the values for slope and offset. Start
ChromLab software and select Tools >
Calibrate and choose pH from the dropdown
list. Complete the calibration steps in the
dialog box. Replace the pH probe if
necessary.
Store in storage solution when not in use.
See Table
15 for recommended storage
solutions for the pH electrode.
Tip: See Storing the pH Electrode on
page 217 for information about storing
the electrode.
Wash housing check
valves Replace the wash housing check valves.
Sample pump Calibrate flow rate of the sample pump.
Sample pump seals and
check valve Replace the seals and check valve using the
pump head maintenance kit.
System pump Calibrate the flow rate.
System pump seals and
check valve Replace the seals and check valve using the
pump head maintenance kit.
UV, UV/Vis, and
conductivity monitors Check the reference and signal voltage.
Replace the light source if necessary.
Calibrate the conductivity monitor.
UV/Vis flow cell Replace the flow cell if it is fouled and
cannot be cleaned.
Table 14. NGC instrument maintenance schedule, continued
Interval Component Action