XRF readings:
Lead: 19900 ppm · Cadmium: 0 ppm · Arsenic: 1100 ppm
Verdict: Very high: avoid food contact
This 2007 Dunoon Blenheim Palace Red Drawing Room Mug: 19,900 ppm Lead + 1,750 Arsenic. Which mug do you use daily for coffee? tested at 19900 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. Arsenic reads 1100 ppm, worth noting on top of the lead question.
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).