User`s guide

Installation and Setup

0497-2066) or the graphite ferrule supplied with the

union (not for ECD or MS). After passing the column

end through the ferrule cut off a further 0.5cm of fused

silica to avoid the possibility of a blockage. The silica

line should end in the center of the union. It is essential

that the fused silica line does not touch any part of the

oven wall.

NOTE: The ferrules are fitted with the tapered end away from the

body of the union. Tighten the nut just enough to avoid

leakage.

8. Connect the packed column to the injector using two

wrenches to avoid stressing the braze assembly.

Direct Connection of a Capillary

Column to the TD

In this arrangement the front end of the GC column is passed though

the heated transfer line and connected directly to TD. If you

configure your instrument in this manner, you must ensure that the

column coating material is able to withstand the temperatures of the

heated transfer line and the heated valve.

To install your capillary column for direct connection:

1. Install the insulated transfer line through the rear panel

or through the top of the GC as outlined in Installation

Through the GC Rear Panel on page 53 or Installation

Through the GC Injector on page 55.

2. Mount the column on the capillary support assembly.

NOTE: It is essential that the column does not touch any part of the

oven wall.

3. Unwind a sufficient length of the column to pass

through the stainless steel tube (approximately 1.5 m).

Thread the end of the capillary column into the exposed

stainless steel tube at the GC end so that it protrudes

from the transfer line at the ATD/TD end.

4. Install the capillary column at the ATD/TD as outlined

in Installation at the ATD/TD on page 57.