Varian 450-GC, User Manual

Page: 43 / 205

Installation
Page: 24 User Manual 450-GC Varian, Inc.
Connect Capillary Column to Detector
After the column has been conditioned, follow the steps below to connect the
capillary column to the detector.
Hot surfaces are exposed
•
Check that the capillary column nut and ferrule are installed on the column.
Note that if the TCD is used with capillary columns, a special capillary
adapter (PN 03-925605-01) is used on the TCD inlet.
DO NOT use graphite ferrul es wit h the ECD.
•
Uncoil about 20 cm from end of column.
•
Move the column nut and ferrule to within 5 cm of the column end. Find the
column insertion depth for your detector in Figure below. Measure the
correct distance from the end of the column and mark this distance. Refer
to diagram below for correct distances.
DO NOT let the column nut and
ferrule fall past this mark. The marking medium can contaminate the ferrule.
Column Insertion Depths for Varian Detectors
Figure 2: Column Insertion Depths for Detectors