CP-3800 GC Operator’s Manual
59
3
Partially insert the column into the lower end of the injector. Thread
up the capillary column nut and ferrule finger-tight.
4
Gently push the column into the injector until the mark on the
column is aligned with the bottom edge of the column nut.
5
Tighten the column nut by hand until it is finger-tight. Hold the
column and use a 5/16" wrench to tighten the column nut in place.
Tighten the column nut only enough to seal the column and hold it
firmly in place.
Note:
An optional Capillary Column Quick Connect Kit is available that simplifies
the installation of a capillary column into injectors and detectors. It contains split
capillary column nuts, re-usable graphite ferrules (for 250
µ
m, 320
µ
m, 530
µ
m ID
columns), and a column depth scale. The ferrule is set on the column using this
depth scale. No felt pen, typewriter correction fluid, or tape is needed. (The part
number of the Quick Connect Kit is 03-925751-90.)
Condition
the Column
Analytical columns are conditioned according to the recommendations of the
manufacturer. In general, condition the analytical column at 20
°
C below the
maximum isothermal operating temperature recommended by the column
manufacturer.
As an example, a typical conditioning procedure for a non polar column such
as a CP-Sil 5 CB would be to set the injector temperature to 300
°
C and
ramp the column slowly (10
°
C/min) to 300 °C. The system is then
maintained at these temperatures for a minimum of 2 - 4 hours.
CAUTION
Do not heat the column oven above 50
°
C without carrier gas
flowing through the column. The column phase can be irreversibly
damaged by exposure to oxygen at elevated temperatures. Allow
10 – 15 minutes to purge the column before heating.
Column
Installation
in Detector
To insert the column into the GC detector, follow the same procedure as
installing into the injector. A summary of detector installation depths is given
below. These depths refer to the distance from the tip of the column to the
bottom edge of the column nut. Note that the TCD refers to the installation
distance with a make-up adapter installed.
Table 2 Detector Installation Depths
Detector Depth
(cm)
TCD
FID/TSD
PFPD
ECD
3.9
9.5
9.7
10.5
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
