Agilent Technologies 6850 Series II User Information page 162

7.
Cap the inlet column fitting
(column nut using no-hole ferrule
shown)
Split vent
Septum vent
Figure 29. Capping the bottom of the inlet and septum purge vent
8.
Released: March 2004
Cap the inlet's column fitting and the septum purge vent (septum head
only). Use solid (no hole) Vespel type ferrules 1/8-inch (part no. 0100-1372)
and 1/16-inch (part no. 5181-7458) with a 1/8-inch Swagelok nut
(part no. 5180-4103) and a capillary column nut.
As alternate capping devices, a 1/8-inch Swagelok cap can be used for the
septum purge vent. A capillary column nut with a solid piece of wire the
size of a paper clip and a 0.5-mm id graphite ferrule may be used for the
inlet column fitting.
Make sure that the carrier gas source pressure is at least 35 psi. Carrier
source pressure should always be at least 10 psi greater than the desired
inlet pressure.
6850 Series II GC User Information
Routine Maintenance: Inlets
Maintaining a PTV
page 162 of 256