Columns and Traps
Installing capillary columns
Released: March 2004 6850 Series II GC User Information page 31 of 256
Installing capillary columns in the TCD detector
1. Assemble the ferrules and a 1/8-inch brass nut on the column as shown.
See Table 13 for the proper ferrules. Trim off a short piece of column to
remove any ferrule fragments inside the column.
2. Insert the column into the detector until it bottoms. Do not attempt to
force it.
3. Slide the column nut and ferrule up the column to the detector and tighten
the nut finger tight.
4. Pull the column out 1 mm. Use a wrench to tighten the nut an additional
1/4 turn. The column should not move.
Table 13. Ferrules for the TCD Detector
Installing capillary columns in the FPD
The FPD uses an adaptable fitting that can use both packed and capillary col-
umns. If your adaptable fitting does not have a capillary adapter installed,
begin with step 1. If the capillary adapter is already installed in your adaptable
fitting, begin with step 5.
Column outside diameter Back ferrule Front ferrule
0.8 mm G1530–80400 G1530–80410
0.53 mm G1530–80400 G1530–80420
0.45 mm G1530–80400 G1530–80430
No-hole ferrule G1530–80400 G1530–80440
Detector fitting
Front ferrule
Back ferrule
Column nut
Column
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