PBS-268
PBS-268 is a certified reference material (CRM) manufactured from crushed hematite-goethite iron ore sourced from Australia. Certified in accordance with ISO Guide 35:2017 and ISO 17034:2016, this CRM is designed for rigorous quality control in laboratories performing XRF lithium-borate fusion and multi-temperature Loss on Ignition (LOI) analysis on coarse iron ore samples.
Key Features
- Certified concentrations for major and trace elements.
- Produced via drying, crushing, and screening (5 mm) to ensure representativeness of coarse ore samples.
- Certified through a 10-laboratory round robin, including ISO 17025-accredited labs across Australia, Ireland, and Indonesia.
- Supplied in 2kg heat-sealed plastic bags with unique batch numbering for traceability.
- Stable under normal storage; recommended drying at 105°C prior to analysis.
- 5-year validity period from certification date (28th October 2022).
Key Certified Values
|
Analyte |
Certified Value (y) |
Standard Deviation (s) |
95% Confidence Interval (CI) |
||
|
1 SD |
1 SD Within Lab |
lower |
upper |
||
|
Fe |
57.84 |
0.223 |
0.169 |
57.74 |
57.98 |
|
SiO2 |
5.74 |
0.081 |
0.058 |
5.72 |
5.82 |
|
Al2O3 |
2.91 |
0.033 |
0.018 |
2.89 |
2.93 |
|
TiO2 |
0.150 |
0.0060 |
0.0044 |
0.146 |
0.153 |
|
Mn |
0.238 |
0.0106 |
0.0086 |
0.231 |
0.243 |
|
CaO |
0.133 |
0.0072 |
0.0048 |
0.128 |
0.138 |
|
P |
0.067 |
0.0012 |
0.0006 |
0.066 |
0.067 |
|
S |
0.058 |
0.0024 |
0.0011 |
0.056 |
0.061 |
|
MgO |
0.122 |
0.0089 |
0.0049 |
0.117 |
0.130 |
|
K2O |
0.028 |
0.0019 |
0.0010 |
0.027 |
0.030 |
|
Na2O |
0.022 |
0.0094 |
0.0038 |
0.010 |
0.035 |
|
LOI 425 |
6.52 |
0.131 |
0.029 |
6.40 |
6.65 |
|
LOI 650 |
7.12 |
0.045 |
0.035 |
7.09 |
7.15 |
|
LOI 1000 |
7.44 |
0.054 |
0.040 |
7.40 |
7.47 |
|
LOI 425 to 650 |
0.60 |
0.116 |
0.021 |
0.48 |
0.71 |
|
LOI 650 to 1000 |
0.31 |
0.033 |
0.028 |
0.29 |
0.33 |
Intended Use
- Validation of coarse sample preparation, subsampling, and analytical workflows in iron ore laboratories.
- Calibration and QC for XRF fusion and LOI analysis across multiple temperatures.
- Inter-laboratory proficiency testing to quantify preparation vs. analytical errors.
