Waters Prep Series Installation And Maintenance Manual page 70

Pump outlet connection to the purge valve (PrepLC system)
Waste tubing
Purge valve (rear)
Inlet connector
From pump outlet
(0.020-Inch ID
SS Tubing)
To minimize bandspreading at flow rates less than ~10 mL/min, use
0.009-inch ID tubing between the injector and the small-scale column. Use
0.020-inch ID tubing throughout the system for flow rates above 10 mL/min to
maintain adequate backpressure.
Tip: Waters offers optional small-scale injector and scale select valves for the
PrepLC system. Contact your local Waters Technical Service representative
for details.
Connecting a prep column
You can introduce samples for large-scale chromatography through an unused
solvent inlet line or the pump's manual sample inlet. For large-scale
operation, connect the pump outlet directly to the column inlet with
0.040-inch tubing.
2-36 Installing the System