IMS-441
IMS-441 is a certified reference material (CRM) manufactured from pulverised magnetite ore derived from a blend of Australian magnetite sources. Developed and certified in accordance with ISO 17034:2016 and ISO 33405:2024, IMS-441 is designed for precision quality control and method validation in laboratories performing XRF fusion, Davis Tube Wash (DTW), acid digestion/titration (FeO), Satmagan (Fe₃O₄), and particle size distribution (PSD) analysis.
Key Features
- Certified concentrations for major, minor, and trace elements in both head and DTW magnetite concentrate forms.
- Produced via controlled multi-stage crushing, pulverising, and homogenisation to ensure excellent batch uniformity.
- Characterised through an inter-laboratory program involving multiple ISO 17025 accredited laboratories.
- Supplied in 1 kg sealed PET jars, with 10 g sachets available on request for blind submissions.
- Stable under normal storage conditions, with a 10-year certificate validity.
Key Certified Values
Head of CRM (via Fusion XRF, % w/w)
|
Analyte |
Certified Value (y) |
Standard Deviation (s) |
95% Confidence Interval (CI) |
||
|
1 SD |
1 SD Within Lab (Sw) |
lower |
upper |
||
|
Fe |
32.71 |
0.163 |
0.108 |
32.60 |
32.81 |
|
SiO2 |
39.11 |
0.157 |
0.104 |
39.00 |
39.21 |
|
Al2O3 |
2.01 |
0.018 |
0.012 |
1.99 |
2.02 |
|
TiO2 |
0.104 |
0.0062 |
0.0037 |
0.100 |
0.107 |
|
Mn |
0.458 |
0.0084 |
0.0034 |
0.452 |
0.464 |
|
LOI1000 |
6.21 |
0.073 |
0.053 |
6.16 |
6.25 |
DTW Magnetite Concentrate (via Fusion XRF, % w/w)
|
Analyte |
Certified Value (y) |
Standard Deviation (s) |
95% Confidence Interval (CI) |
||
|
1 SD |
1 SD Within Lab (Sw) |
lower |
upper |
||
|
Fe |
65.48 |
0.697 |
0.301 |
64.75 |
66.20 |
|
SiO2 |
7.05 |
0.680 |
0.249 |
6.32 |
7.77 |
|
Al2O3 |
0.33 |
0.039 |
0.021 |
0.28 |
0.38 |
|
TiO2 |
0.036 |
0.0054 |
0.0016 |
0.030 |
0.042 |
|
Mn |
0.075 |
0.0064 |
0.0042 |
0.068 |
0.082 |
|
LOI1000 |
-1.97 |
0.158 |
0.085 |
-2.13 |
-1.81 |
Additional Parameters
- DTW Mass Recovery: 33.29% ± 1.313
- FeO (acid digestion/titration): 20.81% ± 0.454
- Fe₃O₄ (via Satmagan): 29.31% ± 0.856
Intended Use
- Monitoring accuracy and precision of XRF fusion analysis for magnetite ore characterisation.
- Validating Davis Tube Wash (DTW) separation and magnetite concentrate analysis.
- Calibrating FeO (acid titration) and Fe₃O₄ (Satmagan) methods.
