Consumables
Gas Supply iCAP TQ/TQs ICP-MS
5-20
iCAP Qnova Series ICP-MS Pre-Installation Requirements Guide (P/N BRE0006946, Revision A)
Thermo Scientific
CR Gas
The Collision Reaction Cell allows the selective removal of polyatomic
interferences.
The following services must be supplied by the customer:
•
Gas
•
Two-stage gas pressure regulator (for 1/16” capillary, 1/4” to 1/16”
adapter will be supplied with the instrument)
Helium
A CR installation test is performed with helium gas to pressurize the
QCell. See
for details of the helium gas requirements.
Argon or Mixtures with Helium (for QCell)
for details of the argon gas requirements.
NOTICE
The CR gas outlet should be located at a maximum distance of 2 to 3
meters to the left of the instrument. Thermo Fisher Scientific supplies
2 × 3 meters of gas tubing with the instrument.
Table 5-17.
CR gas requirements for helium
Gas Requirement
Specification
Purity
99.999%
Maximum Water Content
2 ppmv
Supply Rate
max. 12 mL/min
Pressure min.
0.05 MPa
(0.5 bar)
max. 0.15 MPa (1.5 bar)
using a two-stage pressure
regulator (200 bar to 3 bar)
Table 5-18.
Gas requirements for argon (for QCell)
Gas Requirement
Specification
Purity
99.999%
Maximum Water Content
2 ppmv
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