Gold testing methods
Gold testing methods answer different analytical questions. The material, sampling plan and intended use of the result should determine the approach.
Surface composition
XRF screening
Understand the elements measured at a tested surface, and where further investigation may be needed.
Read the guideAnalysis of a test portion
Fire assay
Understand representative sampling, destructive preparation and the analytical result.
Read the guideSample identification
Sampling & custody
Agree how material is sampled, recorded, transferred and connected to the laboratory report.
Read the guideXRF or fire assay?
Compare surface information, representative samples and the effect of testing on the item.
Compare the methods