Bio-Rad ChromLab™ Software - Manual (Page 74)

2 | The NGC Instrument
72 | NGC Chromatography Systems and ChromLab Software
pH Detector
The pH detector includes an integrated flow cell in which to insert a pH electrode.
The pH of the solution flowing across the pH electrode is measured in real time. This
is very useful for applications in which knowledge of the buffer pH is critical for a
successful separation and/or the stability of the sample (for example, in antibody
purifications). The pH can be temperature compensated.
The pH valve directs the flow to either
 pH — flow path is inline with the pH probe, or
 Bypass — flow path bypasses the electrode
Note: In Calibrate mode, the pH electrode is offline for calibration.