ISO/IEC 17025:2017 accredited determination of U3O8 wt% in solid samples by ICP-OES, plus multi-element uranium analysis and CNSC-licensed radioactive-sample prep/archive at the Cleveland Avenue laboratory. NAICS Canada 2022 541380 Testing laboratories (illustrative example assaying services / radiation testing services). No CBSA 6-digit goods class for the assay report itself. Not a mill and not a yellowcake seller. SRC Environmental water radiochemistry is the same Crown, not a second listing.