XRF readings:
Lead: 40 ppm · Cadmium: 26 ppm · Arsenic: 0 ppm
Verdict: Low: probably not a concern
This Soil sent in by a Lead Safe Mama reader from Omaha, Nebraska (XRF test results, May 2023) reads 40 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).