Gas Requirements - Waters Xevo TQ-GC Overview And Maintenance Manual

1.6 Gas requirements

The following tables describe the requirements for the various gases you can use with the Xevo
TQ-GC and the GC oven.
Warning:
To avoid fire or explosion caused by incorrectly fitted gas connections, do not attempt
to change or perform any maintenance on the gas lines connected to the instrument or the GC
oven. Only qualified personnel should carry out this work, ensuring at all times that the
organization's operating procedures are followed.
Notice:
responsible for connecting the gas must refer to the documentation that accompanied
the oven and follow the instructions on how to connect gas supplies.
Warning:
gas supply must be connected to the GC oven through Waters hydrogen control box,
using the full 10-m length of the 1/8-inch stainless steel capillary tubing from the Xevo
TQ-GC installation kit. Do not shorten the 10-m tube. Inspect all gas fittings for leak
tightness and consistent supply pressure. Avoid naked flames.
Warning:
injury or death, inspect all gas fittings on the mass spectrometer for leak tightness and
consistent supply pressure. Avoid naked flames.
Warning:
fittings on the mass spectrometer for leak tightness and consistent supply pressure.
Warning:
asphyxiation, inspect all gas fittings on the mass spectrometer for leak tightness and
consistent supply pressure.
Warning:
clean, chemical-resistant, powder-free gloves.
Table 1–1: Collision gas (connects to the back of the instrument)
Collision gas
Argon
To avoid an incorrect carrier gas connection to the GC oven, the personnel
Hydrogen gas is explosive. To avoid serious injury or death, the hydrogen
Iso-butane, methane, and ammonia gases are flammable. To avoid serious
Ammonia gas is toxic. To avoid serious injury or death, inspect all gas
Isobutane, methane, helium and hydrogen are asphyxiants. To avoid
To avoid burn injuries from skin contact with liquid forms of isobutane, wear
Ionization mode
EI or CI
April 27, 2020, 715005564 Ver. 01 (previously released as Rev. A)
Requirements
Dry and of high purity
(99.997%)
Page 27
Regulated pressure
setting
0.8 bar (11.6 psi, 80
kPa)