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Gas Dilution HMI (ICP-MS).

Question asked by dp44 on Oct 12, 2020
Latest reply on Oct 15, 2020 by edgarvs

I use Agilent 7900 and gas dilution HMI-8 and HMI-25. The device automatically changes the Power and Sample depth. I expect to get a sample dilution of 8 and 25 times. This is not happening. Actually dilution is less. Should I reduce myself additionally Carrier gas (Nebulizer gas)?

I changed the dilution gas flow in the Custome tuning mode (Signal Monitor). Elements signals do not decrease in the range from 0 to 4 l / min, but increase! Signal reduction starts from 5 l / min. Is that possible?

How to do Plasma correction? Which solution should you use?