Agilent Technologies 7500 ICP-MS User Manual

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Agilent 7500 ICP-MS ChemStation Operator’s Manual
Tuning
Typical values for the ShieldTorch (High Sensitivity mode)
5 Adjust Torch-H and Torch-V position.
6 Adjust the RF Power.
7 Adjust the Smpl Depth (Sampling depth).
Tuning parameters Typical Range Note
RF Power (W) 1500
1200
∼ 1600
Smpl Depth (mm) 6
4 ∼ 8
Set lower than the normal value.
Carrier Gas (L/min) 1.2
0.8 ∼ 1.3
Makeup Gas (L/min) 0
0
∼ 0.4
Set as to make the total flow rate, including the carrier gas, to
be about 1.2 L/min.
PeriPump (rps) 0.2
0.06
∼ 0.20
Set higher to get a high sensitivity, but making it too high
doesn't always increase further sensitivity.
Extract 1 (V) -180
-200
∼ -100
Extract 2 (V) -35
-150 ∼ -10
Einzel 1,3 (V) -100
-130
∼ -40
Even if the value of the Einzel lens is decreased, the
background may hardly be increased and only the sensitivity
may be increased.
Einzel 2 (V) 10
0 ∼ 15
Omega Bias (V) -30
-100
∼ -25
If this value is lowered, sensitivity may be increased.
Even if the value of the Omega lens is decreased, the
background may hardly be increased and only the sensitivity
may be increased.
Omega (+) (V) 8
0
∼ 30
Omega (-) (V) 5
-30
∼ 0
QP Focus (V) 0
0
∼ 10
Because the ion energy is low, it is necessary to make this
value smaller than that of the Standard torch. Be sure to use
with 0 or (+). In the case of (-), the background will sharply
rise.
Plate Bias (V) -10
-10
∼ -5
Because the ion energy is low, it is necessary to add negative
voltage.
QP Bias (V) -5
-10
∼ -5
Because the ion energy is low, it is necessary to add negative
voltage.

Agilent Technologies 7500 ICP-MS Specifications

General

Brand	Agilent Technologies
Model	7500 ICP-MS
Category	Laboratory Equipment
Language	English