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Frequently Asked Questions - 7800 ICP-MS Carrier Gas Readings
While I'm running a batch and doing the initial tune batch there isn't any counts being read for any of my mass's. However under the Tune tab after adjusting the He Flow to 0 I start to read counts for the elements , but once I adjust it back up it reads 0 again. I have checked if sample introduction is the source of the problem, I have cleaned and checked the nebulizer, lines, tuning solutions and that seems to be running fine. I believe my problem lies somewhere else. I have an Agilent 7800 ICP-MS.
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Thank you for your inquiry. Based on the information given, I suspect that the He gas flow may be too high. I would recommend starting with a low flow rate and running an autotune for the instrument to set the correct flow rate. It may be beneficial to reach out to your instrument manufacturer to confirm the flow rate for normal He operation. |