XRF readings:
Lead: 14900 ppm · Cadmium: 400 ppm · Arsenic: 0 ppm
Verdict: Very high: avoid food contact
This c. 1980-1990 Corelle Fruit Pattern Plate: 14,900 ppm Lead & 327 ppm Cadmium (90 ppm Pb is unsafe) tested at 14900 ppm lead, heavily contaminated. If any of the lead is on the painted surface, decoration, or worn area, expect bioavailable exposure with food contact, mouthing, or abrasion. Cadmium reads 400 ppm, which is also flagged territory.
What this XRF reading actually means →
XRF measures lead presence on the surface. It does not measure whether that lead can reach a person. That distinction matters for how you should react to this number. Read the full primer.
Test your own dishes with FluoroSpec →
Source: EverythingLead · Test method: XRF (Niton XL 5 Plus, 1.5 sigma)
License: Verdict and methodology © EverythingLead, CC-BY-SA 4.0. Factual XRF measurements are not copyrightable (Feist v. Rural Tel., 499 U.S. 340).