4 Installing 7890 GC Columns
To Install a Capillary Column in the GC/MSD Interface Using the Self-Tightening Column Nut
86 5977B Series MSD Operating Manual
9 Wipe the end with alcohol.
10 Adjust the column so it extends this specified distance from the end of the
GC/MSD interface.
For an EI XTR, SS, Inert or CI Source Installation (See Figure 21), the column
extends about 1 mm from the column guide tube.
For an EI HES Installation (See Figure 22), the column extends 4 to 5 mm
from the column guide tube.
Use the flashlight and magnifying loupe, if necessary, to see the end of the
column inside the analyzer chamber. Do not use your finger to feel for the
column end.
Figure 21. Installing a capillary column in the GC/MSD interface for an EI EXT, SS, Inert, or CI source.
Figure 22. Installing a capillary column in the GC/MSD interface for an EI HES source.