Positive Material Identification, Handheld XRF Spectrometry

Advanced PMI, Alloy and Precious Metal Analysis

Alloy Grade and Positive Material Identification with Bruker’s CTX

CTX metal analysis

Bruker’s CTX is a safe, sophisticated, self-contained, portable energy-dispersive X-ray fluorescence (ED-XRF) spectrometer ideal for advanced alloy and metal testing, positive material identification (PMI) and precious metal analysis. Please contact our product team to find out how the CTX solve your alloy analysis needs.

CTX relies on industry-leading EDXRF technology, which helps determine the elemental composition of any alloys. As an obvious application, when run to test a true coin of sterling silver, the Bruker CTX reads the elemental energy magnitudes of the two components (silver at 22.163 keV; copper at 8.046 keV) to verify the coin’s composition as made up of 92.5% Ag and 7.5% Cu. The CTX is used to:

  • Identify alloys of gold (Au), silver (Ag), platinum (Pt), palladium (Pd) and other precious metals
  • Determine gold karat rating (our precious metal application comes with a karat library, single phase)
  • Test metallic powders, shavings, slivers, and large pieces
  • Analyze auto-catalysts for precious metals recovery

Most metals, alloys and alloy grades can be analysed with the CTX. The ready-to-go alloy calibration package includes:

  • A light element (LE) capability (model 800 or 600)
  • Calibrations for stainless steels, tool steels, low alloy steels
  • Calibrations for nickel (Ni) alloys, cobalt (Co), copper (Cu) alloys, zinc (Zn) alloys
  • Calibration for light alloys
  • General calibration for all other alloy types
  • SmartGrade™ functionality for fast and safe alloy ID without user decision
  • Shaving and Turnings Mode for small samples and stand-off measurements.


There are a number of strong advantages to using CTX for alloy or precious metals analysis:

  • Rugged, durable stainless steel body
  • Dust and splash-proof, easy to clean
  • A clear, operational touchscreen display
  • Ample, safe internal sample chamber, 4.7 x 5.3 x 3.3in / 12 x 13.5 x 8.5cm
  • Operating temperature: -10°C to +40°C (+14°F to 104°F)
  • Powered by battery or via a 110/220V AC adapter
  • Cutting-edge software


Please contact Bruker with your query concerning the CTX.