Description
The 18k White Gold Certified Reference Material (CRM) ERM®-EB507 is a SI-traceable, multi-element gold alloy standard developed specifically for X-ray fluorescence (XRF) spectrometry calibration and quality control.
This CRM is optimized for handheld and benchtop XRF analyzers used in jewelry analysis, precious-metal verification, scrap sorting, and refinery QA/QC workflows. Certified under the European Reference Materials (ERM) program and produced by BAM (Germany), ERM®-EB507 represents a true nickel-based white gold matrix, ensuring realistic calibration behavior.
For field verification and PMI work, many customers pair this material with NEW or PRE-OWNED handheld XRF analyzers for rapid, on-site analysis.
Certified Composition (Mass Fraction %)
| Element | Certified Value (%) | Expanded Uncertainty (k = 2.5) |
|---|---|---|
| Gold (Au) | 75.10 | ± 0.11 |
| Silver (Ag) | 3.02 | ± 0.05 |
| Copper (Cu) | 14.69 | ± 0.05 |
| Nickel (Ni) | 4.99 | ± 0.04 |
| Zinc (Zn) | 2.107 | ± 0.016 |
Values are traceable to the SI and represent the unweighted mean of accepted interlaboratory datasets
Key Applications
- Handheld XRF calibration & verification
- Jewelry & precious metals analysis
- Gold scrap sorting & authentication
- XRF QA/QC programs
- Training & method validation
What Makes This CRM Different
- True 18k White Gold Matrix – Includes Ni-based whitening system, not approximations
- Designed for Handheld XRF – Explicitly developed for portable instruments
- Multi-Lab Certified Data – Robust uncertainty modeling & statistical validation
- Long-Term Stability – Certificate valid through May 2064
This CRM is ideal for distinguishing white gold from yellow, rose, or plated alloys during XRF analysis.
Physical Description
- Form: Round metallic slice embedded in acrylic
- Metal Diameter: 15.8 mm
- Metal Thickness: 0.25 – 0.30 mm
- Acrylic Disc: 40 mm diameter × 5 mm thickness
The embedded design provides repeatable geometry, flat analysis surface, and excellent durability for routine XRF use
Intended Use
- ERM®-EB507 is intended for:
- Calibration of X-ray fluorescence spectrometers
- Quality control verification
- White gold alloy validation
It was specifically developed for handheld XRF spectrometers, making it well-suited for field and shop-floor environments
Additional Analytical Notes
- One laboratory detected Fe at 0.014% and Mn at 0.03% (informational only, not certified values)
- Primary certification performed using:
- Fire Assay (Au)
- ICP-OES after aqua regia dissolution (Ag, Cu, Ni, Zn)
Instructions for Use
- No sample preparation required
- Avoid touching the metal surface
- If needed, clean gently with pure ethanol
- Store in a clean, dry environment at ambient conditions
Certification & Traceability
- Certified By: BAM – Bundesanstalt für Materialforschung und -prüfung (Germany)
- Program: European Reference Materials (ERM®)
- Traceability: SI-traceable via pure substances of known stoichiometry
- Certificate Validity: Through 05/2064
What’s Included
- 1× ERM-EB507 18k White Gold CRM
- Original Certificate of Analysis (PDF)
- Protective packaging
Why Buy from Alloy Geek?
- CRM expertise focused on handheld and benchtop XRF users
- Fast shipping & knowledgeable support
- Trusted by scrap yards, jewelers, refiners, and labs
- Calibration materials curated specifically for real-world field use
Certified by
- BAM Department 1 (Analytical Chemistry; Reference Materials)
- BAM Division 1.6 (Inorganic Reference Materials)
- Download the Certificate of Analysis
Ensure accuracy and traceability in your gold testing workflow with the ERM®-EB508e 18K Gold CRM – trusted by laboratories and precious metal professionals worldwide.