Assay & Verification Protocol
Ensuring absolute purity and weight precision through institutional-grade analytical chemistry.
The Verification Standard
At Nile Precious Metals, we employ a multi-tiered verification process to eliminate discrepancy and ensure that every gram of gold delivered matches the certified purity. Our protocols are aligned with LBMA (London Bullion Market Association) standards for sampling and assaying.
Core Verification Pillars:
- Non-destructive XRF Surface Analysis
- Destructive Fire Assay (Cupellation) for Core Samples
- Precision Gravimetric Weight Verification
- Certified Chain-of-Custody Documentation
Technical Specifications
- ✓XRF Precision: ±0.1% for 24K gold
- ✓Fire Assay Accuracy: 99.99% confidence level
- ✓Sampling: Random representative sampling per batch
- ✓Certification: ISO 17025 accredited labs
Verification Pipeline
Initial XRF Scan
Immediate surface analysis using X-Ray Fluorescence to detect primary composition and purity markers.
Representative Sampling
Drilling or shaving samples from various points of the dore bar to ensure homogeneity.
Fire Assay Process
The gold standard: melting the sample with flux in a cupel to separate gold from all base metals.
Request Full Assay Report
Every institutional shipment includes a comprehensive assay report. Contact our technical desk to understand our sampling frequency and precision tolerances.
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