Agilent Technologies G3183B, Installation And Operation Manual

Page: 12 / 56

12 Installation and Operation Guide
1
Introduction
Gas Requirements
Carrier gas
The choice of carrier gas is dictated by the chromatographic requirements.
Hydrogen and helium are the most common choices for capillary columns. See
your GC documentation and other sources for additional carrier gas
information.
Makeup gas
The makeup gas is usually the same as the carrier gas, with one very
important exception.
Do not use hydrogen or any other flammable gas as the
makeup gas, regardless of the carrier gas choice .
The splitter protects the entrance to the MSD when the column is
disconnected by blanketing the connection with makeup gas. This gas flows
into the column oven. Hydrogen or other flammable gas would present a
serious fire and explosion hazard if allowed to flow into the oven.
GC Requirements
The splitter mounts in an Agilent 6890 series GC.
The splitter requires an electronically controlled pressure source such as the
Three Channel Pressure controller (6890 option 301 or 308) or a Pneumatics
Control Module (PCM).
Other Requirements
The calculator requires Microsoft® Excel 97 (or later), which is not supplied
with this kit.
WA R N I N G
Hydrogen is both a fire and explosion hazard when mixed with air. For this reason,
hydrogen must not be used as the makeup gas.