Columns and Traps
Installing capillary columns
Released: March 2004 6850 Series II GC User Information page 35 of 256
2. Prepare the column. See “Installing capillary columns” on page 27 for
instructions.
3. If the column id is 200 µm or more, push the column into the adapter
until it stops at the indentation. Pull it back 1 to 2 mm and tighten the
column nut firmly.
If the id is less than 200 µm, mark the column with a septum 70±1 mm
from the end. Insert column and nut into the adapter with the septum at
the rear of the column nut, and tighten the column nut firmly.
4. Slowly install the adapter straight into the detector fitting. Make sure that
the adapter is seated all the way into the detector fitting—jiggle it if
necessary. Be careful not to break the column end.
If the adapter is properly installed, the distance between the
1/4-inch nut and the bottom of the adapter will be 19 ± 1 mm. If it is 22 to
23 mm, reinstall the adapter into the detector fitting.
70±1 mm
Mark
Detector fitting
19 ± 1 mm
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