Thermo Scientific iCAP Qnova Series, Pre-Installation Requirements Manual

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Consumables
Gas Supply iCAP RQ ICP-MS
Thermo Scientific iCAP Qnova Series ICP-MS Pre-Installation Requirements Guide (P/N BRE0006946, Revision A) 5-7
Plasma and Cooling Gas
The argon supply to the iCAP RQ instruments must be stabilized. The
gas pressure regulator must be qualified for the purity specification of
the plasma gas, see
Table 5-4 .
Using a high quality two-stage regulator is recommended, see
Table 5-10 for suppliers of pressure regulators.
Connection of the laboratory argon supply to the instrument is made
via a push-in fitting. A recommended set-up for the argon supply is
shown in
Figure 5-6 . 3 m polyurethane tubing will be supplied with the
instrument.
Table 5-4. Argon gas requirements
Gas Requirement Specification
Purity 99.996% or better
Maximum Water Content 5 ppmv
Supply Rate max. 24 L/min
Pressure min. 0.55 MPa (5.5 bar)
max. 0.6 MPa (6 bar)
using a two-stage pressure
regulator (200 bar to 10 bar,
230 bar to 10 bar or 300 bar to
10 bar)
NOTICE
The plasma gas regulator must have an outlet pressure of max. 1 MPa
(10 bar), and it must fit the maximum primary pressure specification
of the argon gas laboratory supply. Check whether your maximum
primary pressure is 30 MPa (300 bar), 23 MPa (230 bar), or 20 MPa
(200 bar), and choose accordingly.
NOTICE
The polyurethane tubing supplied with your iCAP RQ ICP-MS
should not be used between the gas source and the pressure regulator
because polyurethane is not specified for pressure above approximately
0.8 MPa (8 bar).