PBS-70
PBS-70 is a certified reference material (CRM) derived from pulverized magnetite ore sourced from a Western Australian mine. Certified in accordance with ISO Guide 35, PBS-70 is designed for rigorous quality control and validation of methods in geochemical and metallurgical laboratories performing XRF fusion, Davis Tube Recovery (DTR), Loss on Ignition (LOI), and Particle Size Distribution (PSD) measurements.
Key Features
- Certified concentrations for major, minor, and trace elements in both head sample and Davis Tube magnetic concentrate.
- Manufactured through a multi-stage process involving drying, crushing, milling, and homogenization to ensure excellent homogeneity.
- Certified via a multi-laboratory round robin involving 8 laboratories across Australia, with statistical validation of results.
- Supplied in 1kg press-sealed plastic jars, with 10g sachets available upon request for blind laboratory submissions.
- Stable under standard storage conditions, with recommended drying at 105°C prior to use for accurate results.
Key Values
Head of CRM (via Fusion XRF, % w/w)
|
Analyte |
unit |
Value |
Standard Deviation |
95% Conf. Int. |
||
|
1 SD |
1 SD Within Lab |
lower |
upper |
|||
|
Fe |
% |
30.46 |
0.100 |
0.071 |
30.37 |
30.54 |
|
SiO2 |
% |
47.54 |
0.122 |
0.111 |
47.46 |
47.61 |
|
Al2O3 |
% |
1.49 |
0.017 |
0.010 |
1.48 |
1.51 |
|
TiO2 |
% |
0.073 |
0.0038 |
0.0033 |
0.071 |
0.075 |
|
Mn |
% |
0.117 |
0.0035 |
0.0023 |
0.115 |
0.120 |
|
CaO |
% |
0.492 |
0.0071 |
0.0052 |
0.487 |
0.497 |
|
P |
% |
0.102 |
0.0019 |
0.0009 |
0.101 |
0.104 |
|
S |
% |
0.133 |
0.0017 |
0.0013 |
0.132 |
0.135 |
|
MgO |
% |
2.260 |
0.0240 |
0.0110 |
2.240 |
2.280 |
|
K2O |
% |
0.675 |
0.0115 |
0.0050 |
0.664 |
0.685 |
|
Na2O |
% |
0.149 |
0.0140 |
0.0060 |
0.136 |
0.162 |
|
LOI 1000 |
% |
3.28 |
0.097 |
0.041 |
3.19 |
3.37 |
Davis Tube Magnetite Concentrate (via Fusion XRF, % w/w)
|
Analyte |
unit |
Value |
Standard Deviation |
95% Conf. Int. |
||
|
1 SD |
1 SD Within Lab |
lower |
upper |
|||
|
Fe |
% |
62.01 |
1.030 |
0.364 |
61.15 |
62.87 |
|
SiO2 |
% |
11.77 |
1.053 |
0.323 |
10.88 |
12.66 |
|
Al2O3 |
% |
0.31 |
0.041 |
0.016 |
0.28 |
0.35 |
|
TiO2 |
% |
0.030 |
0.0056 |
0.0030 |
0.026 |
0.035 |
|
CaO |
% |
0.155 |
0.0153 |
0.0067 |
0.143 |
0.168 |
|
MgO |
% |
0.512 |
0.0547 |
0.0181 |
0.466 |
0.558 |
|
K2O |
% |
0.132 |
0.0228 |
0.0076 |
0.113 |
0.151 |
|
P |
% |
0.039 |
0.0031 |
0.0012 |
0.037 |
0.042 |
|
LOI 1000 |
% |
-1.70 |
0.168 |
0.095 |
-1.82 |
-1.57 |
Additional Parameters
- DTW Mass Recovery: 33.96% ± 1.273%
Intended Use
- Monitoring and calibration of XRF fusion for iron ore and magnetite analysis.
- Validation of Davis Tube Recovery (DTR) and mass yield calculations.
- Calibration and validation of PSD measurements via laser diffraction and wet sieve methods.
- Quality assurance for geochemical and metallurgical testing laboratories.
