XRF readings:
Lead: 23 ppm · Cadmium: 0 ppm · Arsenic: 0 ppm
Verdict: Low: probably not a concern
This Mason Jars, Kerr Brand: 23 ppm Lead (plus Cadmium) â but WAIT! Don’t panic! Read more here. reads 23 ppm lead, below the 90 ppm CPSC threshold for children's products and within the typical XRF noise floor for trace contamination.
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).
