Gilson 155 User Manual page 94

Maintenance
Solvent cleaning
If you suspect that droplets of an organic-soluble
contaminant or immiscible solvent contaminate the
active flow cell, draw or pump a series of miscible
solvents through the cell.
If you were pumping a polar mobile phase, you
should draw methanol, tetrahydrofuran,
methylene chloride, and then methanol through
the flow cell.
If you were pumping a non-polar mobile phase,
you should draw hexane, isopropanol, methanol,
then water through the flow cell.
To clean the inside of the flow cell:
1 Disconnect the inlet and outlet tubing from
your system.
2 Using a 1/4-28 coupler, connect a Luer-lock
fitting to the Omnifit-type fitting on the outlet
tubing. Then attach a large glass syringe to the
Luer-lock fitting.
3 Place the end of the inlet tubing into a reservoir
of the first solvent of the series.
4 Draw solvent through the cell.
5 Repeat for each remaining solvent in the series.
6 Reconnect the inlet and outlet tubing to the
system.
7 Check the detector's performance by running a
sample through the system.
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