Low sensitivity for low masses and high drift ICP-MS 8900

Hi, we are having low sensitivity for low masses and high drift in our ICP-MS 8900. I've cleaned the lens and spray chamber, the cones and torch are new. I checked the nebulizer for any blockages and replaced the tubing. EM is not reaching near the limit. But the problem still persists. We have received a lot of ¨guides¨ and tests to do from Agilent representatives in Argentina, but no one has worked. We need urgent assistance.

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  • Hi, the Platin Shield is correctly installed and is also new. Last Friday we measured the grounding, it was 0.04 ohm. We followed the guide  troubleshooting-tool-for-low-sensitivity: 

    1.1.1 Signal monitor using mass 12, 56, and 80
    Are all counts of 12, 56, and 80 zero?
    Answ: No
    1.2.2 Adjust res/axis using mass 12, 56, and 80
    Did the startup task end without error?
    Answ: No
    The next step says: 
    To solve the problem an engineer from Agilent is needed.
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