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Site Preparation
Gas Equipment Requirements
14
TSQ 8000 Evo Preinstallation Requirements Guide
Thermo Scientific
Collision Gas
• You may use argon or nitrogen as collision gases for the TSQ 8000 Evo MS. Typical
cylinders are about 23 cm (9 in.) in diameter by 140 cm (55 in.) tall and output >15,000
kPa (>2200 psig). A cylinder should last about three years at a constant purge flow rate of
5.0 atm-mL/min.
provides the various collision gas specifications.
WARNING FIRE HAZARD:
Some CI gases, such as methane and isobutane, are flammable.
Make sure these gases are properly exhausted and all gas fittings on the system are
leak-free. Consult your local Environmental and Safety Regulations for information about
how to properly exhaust fumes from your laboratory.
WARNING TOXIC SUBSTANCES HAZARD:
Some CI gases, such as ammonia, are toxic.
Make sure these gases are properly exhausted and all gas fittings on the system are
leak-free. Consult your local Environmental and Safety Regulations for information about
how to properly exhaust fumes from your laboratory.
CAUTION INSTRUMENT DAMAGE:
Do not exceed 240 kPa (35 psig) or you could
damage the CI reagent gas flow module.
Table 8.
Collision Gas Specifications
Gas Type
Purity
Input Pressure
Regulator
Connector*
Argon
99.999%
407-421 kPa
(59-61 psig)
Dual-stage brass
regulator with
stainless steel
diaphragm
CGA-580
Nitrogen 99.999%
386-400
kPa
(56-58 psig)
Dual-stage brass
regulator with
stainless steel
diaphragm
CGA-580
* Connectors will vary with cylinder size. Confirm that your regulator will work with your gas tank. All connections
to the GC/MS are 1/8 in. Swagelok fittings.
CAUTION
Collision gas input pressure must remain constant for proper instrument
performance. The regulator you use to supply the collision gas must be able to deliver 60
± 1 psig for argon or 57 ± 1 psig for nitrogen. It should be marked clearly at 60 or 57 psig
and be stable enough to supply constant pressure at 60 ± 1 psig for argon or 57 ± 1 psig
for nitrogen.