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Calibration & Uncertainty


Operation of XRF instruments requires calibration and method validation, as well as estimation of uncertainty for each determination of concentration. This section discusses the development of the calibration curves in use at HAL, the tests performed to validate the calibration, and the method employed to calculate total measurement uncertainties.  Graphical data for each element may be found in the list of elements below. For more information see the sections Calibration and Validation and Measurement Uncertainty.

Click an Element to View Graphical Data

Key to charts, in order of presentation:

  • Calibration charts – first chart
  • Raw validation charts – buff background
  • Normalized validation charts for major elements – light blue background
  • Precision tests – green background (raw data blue, normalized data orange; raw quartz-diluted data light blue, normalized purple)
  • Average validation uncertainty – dark blue background (raw data blue, normalized data dark orange; raw quartz-diluted data light blue, normalized light orange)
  • Reference material uncertainty – final chart

Contact Information


Hamilton Analytical Laboratory

Taylor Science Center
Hamilton College
198 College Hill Road
Clinton, NY 13323
315-859-4590 HAL@hamilton.edu
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