Agilent Technologies 7500 ICP-MS Operator's Manual page 132

Agilent 7500 ICP-MS ChemStation Operator's Manual
Tuning
1) Select Tune>>Reaction Gas in the ICP-MS Tuning Window.
The ICP-MS Tuning-Reaction Gas Window will appear.
In this window, the data of the tuning and blank solutions are collected as the gas
flow rates change. The Graph button will produce a graph of the sensitivity and
BEC (Background Equivalent Concentration). This graph will help to determine
the flow rate of He gas.
Reaction Gas Tuning Window
2) Aspirate the tuning solution.
3) Set the mass number and integration time by selecting Acq.Params.
4) Input the concentration of each mass number of the tuning solution in the Std
Conc Text Box and select the concentration unit in Conc Unit.
5) Select Std (standard solution) in Current Solution.
6) Select He Gas in the Ramp Flow group and input the minimum value,
maximum value, and the step size of the He gas flow rate to adjust the Flow
Rate.
7) Display the signals by clicking the Check Count button and confirm that the
signal is stable. At this time, the flow rate of He gas doesn't change. Click the
Stop button after confirming signal stability.
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