XRF readings:
Lead: 71100 ppm · Cadmium: 1800 ppm · Arsenic: 0 ppm
Verdict: Extreme: do not use + High cadmium
This Myott “Royal Mail” Fine Staffordshire Ware (Made in England): 71,100 ppm Lead on the food surface. Do NOT use these dishes for food! tested at 71100 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 1800 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).