Complete Set of AG-REE-LO/MED/HI | REE Containing Carbonatite Samples | Prepared 32mm XRF Sample Cups

Upgrade your elemental calibration workflow with the Alloy Geek Rare Earth Element Reference Material 3-Pack, featuring all three levels—Low (0.29 wt%), Mid (0.74 wt%), and High (3.8 wt%)—of our carbonatite-based REE standards. Each sample is ISO 17034-accredited and designed for precision calibration of analytical instruments such as handheld and benchtop XRF.

This 3-pack covers a wide range of light rare earth oxide (LREEO) concentrations, enabling laboratories to build, test, and validate robust REE quantification methods with confidence.

What’s Included:

AG-REE-LO — Low-Level REE (0.29 wt% LREE, 0.35 wt% LREEO)
AG-REE-MID — Mid-Level REE (0.74 wt% LREE, 0.89 wt% LREEO)
AG-REE-HI — High-Level REE (3.8 wt% LREE, 4.5 wt% LREEO)

Each sample includes a sealed container of fine powder with full ISO-accredited certification.

Key Features:

ISO 17034 & ISO/IEC 17025 Accredited Reference Materials (RM)
Engineered for XRF calibration and QA/QC
Ideal for REE geochemistry, mining, research, and analytical method development
Carbonatite matrix matched to real-world ore samples
Produced in the USA and ships from Alloy Geek with rapid fulfillment

Applications:

Instrument calibration across low, mid, and high REE concentrations
Method development for light rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Y)
Rare earth exploration and resource evaluation
QA/QC in academic, industrial, and government labs

Sample Overview:

Sample	LREE (wt%)	LREEO (wt%)	LOI (%)	Highlights
Low	0.29	0.35	42.1	Carbonatite + CaCO₃ blend, ideal for trace REE calibration
Mid	0.74	0.89	40.4	Best for mid-level LREE validation and multi-technique calibration
High	3.8	4.5	30.4	Designed for high-signal calibration and REE ore matching

Produced to ISO 17034 with ISO/IEC 17025 Accredited Chemical Testing in an ISO 9001 Certified Quality Management System.

Available as powder pressed into a 32mm sample cup. XRF Film provided is 6um XRF grade polypropylene. End user may swap film to the film of their liking. Amount of sample: 10g each.