OREAS 733
SKU: 733
OREAS 733 is a certified reference material produced from high-grade bauxite
ore. The ore is typical of lateritic bauxite deposits and has been
characterised using the following methods:
Bauxite suite by fusion with XRF, including Loss on Ignition (LOI) at
1000 °C
Borate/peroxide fusion with ICP-OES & ICP-MS finishes
Available Alumina and Reactive Silica by 145 °C BOMB digestion with
appropriate instrumental or classical finishes
Total Organic Carbon by infrared combustion furnace
Certified values for applicable analytes are operationally defined for each
method, with results included under OREAS ISO 17034 scope of
accreditation.
Specifications
- State: oxide
- Matrix: lateritic
- Mineralisation: bauxite
- CRM Group: Alumina
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Al2O3, Aluminium(III) oxide (wt.%) | 53.28 | TBD | TBD | TBD | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 8.77 | TBD | TBD | TBD | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 10.04 | TBD | TBD | TBD | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 2.87 | TBD | TBD | TBD | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 0.120 | TBD | TBD | TBD | Borate Fusion XRF |
| Na2O, Sodium oxide (wt.%) | 0.330 | TBD | TBD | TBD | Borate Fusion XRF |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
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