Bio-Rad ChromLab™ Software - Manual (Page 272)

C | Plumbing the System
270 | NGC Chromatography Systems and ChromLab Software
Attaching the Backpressure Regulator
If your column requires a high backpressure, install the backpressure regulator.
To attach the backpressure regulator
1. Connect Tube #2 to the top of the conductivity monitor.
2. Connect the other end of Tube #2 to a 40 psi backpressure regulator.
Note: The backpressure regulator has a raised arrow on its side. Ensure
that the arrow on the regulator points in the direction of the flow.