IMS-190
Pulverised Basalt Sulphide Au 0.318g/t
IMS-190 is a low-grade basalt-hosted gold (Au) certified reference material (CRM) designed for precision quality control in fire assay gold analysis for mining and exploration laboratories. Certified in accordance with ISO 17034:2016 and ISO Guide 35:2017, this CRM is a homogenized blend of pulverized basalt spiked with gold, validated across 13 ISO/IEC 17025-accredited laboratories for exceptional reliability in low-concentration Au analysis.
Key Features
- Certified Au content: 0.32 g/t ± 0.010 g/t (1 SD)
- Optimized for low-grade Au analysis: Validated for Pb collection fire assay (AAS/ICP finish) using 30–50g aliquots
- Supplied in 1 kg PET jars or 6 kg boxes, ensuring long-term stability and batch consistency
- 5-year validity when stored in cool, dry conditions
Key Certified Values
|
Analyte |
unit |
Certified Value (y) |
Standard Deviation (s) |
95% Confidence Interval (CI) |
||
|
1 SD |
1 SD Within Lab |
lower |
upper |
|||
|
Au |
g/t |
0.32 |
0.010 |
0.007 |
0.31 |
0.32 |
Intended Use
- QC monitoring: Calibration and validation of fire assay methods for low-grade Au ores (minimum 30g sample mass)
- Bias detection: Identifying systematic errors in laboratories processing low-concentration Au samples
- Homogeneity assurance: Certified for low variability (RSD 2.48% in homogeneity studies)
Pulverised Gold
SKU: 10190
