2-36 Installing the System
Pump outlet connection to the purge valve (PrepLC system)
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.
Waste tubing
Inlet connector
From pump outlet
(0.020-Inch ID
SS Tubing)
Purge valve (rear)
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