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Thermo Fisher Scientific

High Internal Standard Recovery on iCAP 6000-7000 series


High Internal Standard Recovery 


  • iCAP 6000 Series
  • iCAP 7000 Series


Somehow purge flow got set to High. Once it was set back to Normal, the Internal Standard Recoveries came back down near 100%


Internal Standard Recoveries are going to ~125% during calibration and stay there afterwards. Internal standard was doing its job as QC recoveries were within tolerance. Customer was concerned thought that Internal Standard recoveries were 125% This was a wear metal analysis application.