Agilent Technologies ALS Handbuch Seite 41

Table 20
Carrier and reagent gas requirements
Isobutane reagent gas (optional)
Carbon dioxide reagent gas (optional)
Nitrogen for collision cell (nitrogen source is
supplied to EPC module in GC.)
1 Hydrogen gas can be used for the carrier gas but specifications are based on helium as the carrier
2 Reagent available with manual tune only.
7200 and 7250 Series Q-TOF MS
Table 21
Table 21 7200/7250 Q-TOF GC/MS total gas flow limitations
Feature
High vacuum pump 1
High vacuum pump 2
High vacuum pump 3
Carrier gas optimal gas flow, mL/min
Carrier gas maximum recommended gas flow, mL/min
Carrier gas maximum gas flow, mL/min
Reagent gas flow (EI/CI – CI application)
Collision cell gas flow rate, mL/min (Nitrogen)
Collision cell gas flow rate, mL/min (Helium)
Maximum column id
1 Total gas flow into the MS = column flow + reagent gas flow (if applicable) + collision cell gas flow.
2 Expect degradation of spectral performance and sensitivity.
GC, GC/MS, and ALS Site Preparation Guide
7010 and 7000 Triple Quad MS carrier and reagent gases (continued)
gas. Please observe all hydrogen gas safety cautions.
lists the limits on total gas flow into the 7200/7250 Q-TOF GC/MS.
1
2
Typical pressure range
2
103 to 172 kPa
(15 to 25 psi)
2
103 to 138 kPa
(15 to 20 psi)
1.03 to 1.72 bar
(104 to 172 kPa, or
15 to 25 psi)
7200
Split-flow turbo
Split-flow turbo
Turbo
1.0 to 1.5
2.0
2.4
1.0 to 2.0
1.5
0.32 mm (30 m long)
7890 Series GC Site Preparation
Typical flow
(mL/min)
1 to 2
1 to 2
1 to 2 (mL/min)
7250
Split-flow turbo
Turbo
Turbo
1.0 to 1.5
2.0
2.4
NA
1.0
4.0
0.32 mm (30 m long)
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