date:May 21, 2013
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* The results from one of the places we had sent our samples just came in and all levels are less that 1 ppm using a different method even though XRF results from another lab still gave high values in the ppm range. I will be raising the issue of the XRF instrument with the supplier of the instrument, Innov-x-systems. I have been talking to their technical guys and they were assuring me that everything was okay. It is not the first time that XRF instrument was used for analysis of heavy metal