User`s guide

Installation and Setup

6. In the GC oven, cut the fused silica line within reach of

the union. Place the 1/16” stainless steel nut (P/N 0497-

2824) on the fused silica line.Cut about 1 cm (3/8”)

from the end of the fused silica using a wafer scribe (P/

N N930-1386) or other column cutting tool. Break off

the tubing at the score mark making sure that the break

is clean and square. Examine the cut with a magnifying

glass and compare it to Figure 10.

Figure 10 Cutting the Fused Silica Transfer Line

7. Connect the line to the union using either a graphitized

Vespel ferrule (P/N 0497-2066) or the graphite ferrule

supplied with the union (not for ECD or MS).

NOTE: Ensure that the ferrules are fitted with the tapered end away

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

avoid leakage. The fused silica line should end in the center

of the union; it is essential that it does not touch any part of

the oven wall.

8. Connect the GC column to the other end of the

glass-lined union so that it butts up against the end of the

fused silica line at the center of the union. It is essential

that the analytical column does not touch any part of the

oven wall or any sharp edges of metal.

9. Connect the GC column to the detector as described in

the GC manual.

NOTE: For columns that require an inlet pressure of less than 35

kPa (5 psi), better carrier gas control can be achieved by

inserting a length of narrow bore fused silica tubing,

between the column and the detector to increase the

pressure within the ATD/TD. For example, use a tube that

is 0.1-mm bore, 100 cm long, The parts for this restrictor

Bad Cuts

Good Cut