XRF vs OES: Which Analyzer Should You Choose?
Both techniques analyze metals — but they solve different problems. Here is how to decide.
Overview
Portable XRF is non-destructive, fast, and field-ready. OES (optical emission spectrometry) requires spark excitation and is typically lab-based but offers excellent performance for light elements like C, S, P in steel.
When to choose XRF
- PMI and grade ID in the field
- Mining and soil screening
- RoHS and coating analysis
- Non-destructive testing on finished parts
When to choose OES
- Low-level C, S, P in steel
- High-precision lab certification
- Permanent lab installation workflows
Best practice
Many facilities use portable XRF for screening and OES for certification on critical samples. Specelex analyzers fit the screening and PMI layer of this workflow.