Alloy Geek Rare Earth Element Reference Material - High

AG-REE-HI | REE Containing Carbonatite Sample | Prepared 32mm XRF Sample Cup Take your rare earth analysis to the next level with the Alloy Geek Rare Earth Element Reference Material – High, catalogued as AG-REE-HI. Formulated with a concentrated carbonatite matrix and high-purity calcium carbonate, this certified reference material offers a substantial 3.8 wt% LREE concentration—ideal for high-sensitivity instrument calibration and method validation. Certified under ISO 17034, this material supports calibration for XRF workflows in advanced geochemical, mining, and academic laboratories. The trace and major element profile reflects a representative composition of light rare earth-rich carbonatite deposits. Key Features: ISO 17034 Accredited Reference Material (RM) High-Level LREE Content: 3.8 wt% (LREEO: 4.5 wt%) Ideal for Method Validation, Calibration, and QA/QC Compatible with XRF Packaged and Ships from the USA