MPAES4200-White residue on the torch

Hi,

We have MPAES 4200. It has been used to measure diverse metal concentrations in nitric acid digested animal tissues. We are getting white residue on the torch starting from the first time use. The recommended cleaning solutions (aqua regia) do not work. Does anyone encountered the same problem and have any suggestions? Thank you!

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  • I attached application book of MPAES for your reference.

    Hope, it will help...

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