We had to replace the EM on our ICP-MS Agilent 7700. After installing the new EM,
- we reset the EM voltage and run EM settings
- run dead time calibration, with 50ppb and 1 ppm Er solution
Now I am experiencing problems with three elements, [40Ca (H2), 51V (He), and 53Cr(He)].
Before changing the detector, 40Ca (H2) was in analog, while 51V (He) and 53Cr(He) were all in pulse calibration.
Our 40Ca (H2) is always OR ( over range); however, we never had this problem with the old EM, any suggestions on what else to try? Are there any other steps/procedures to follow after replacing an EM?
I have ordered a new EM, but I am hesitant to install it until I understand what is wrong with the current one.
Thanks to everyone in advance for their help.