Columns and Traps
Installing capillary columns
Released: March 2004 6850 Series II GC User Information page 34 of 256
7. Adjust the column position so that the correction fluid mark on the
column is even with the bottom of the column nut.
8. Tighten the column nut finger tight, then withdraw the column about
1 mm. Use a wrench to tighten the nut an additional 1/4 turn.
9. After the column is installed at both inlet and detector, establish a flow of
carrier gas through the inlet. Heat the oven, inlet, and detector to
operating temperatures. Allow them to cool and then retighten the fittings.
Installing capillary columns in a µECD
The detector is shipped with a capillary column adapter installed. If it has been
removed, you must replace it before installing a capillary column.
The µECD requires the indented liner, which is necked down near one end and
is clear.
Materials required
Capillary column adapter
Fused silica liner, indented
1/4-inch nut and 1/4-inch graphitized Vespel ferrule
Column nut and ferrule
Column cutter
1/4-inch and 9/16-inch wrenches
1. Install a 1/4-inch nut and graphitized-Vespel ferrule on the adapter.
Correction fluid mark
1/4-inch graphitized
Vespel ferrule
1/4-inch nut
To Next Page
Loading...
