Analyte | Unit | Certified value | Confidence interval (95%) |
No. of independent repeated series |
Measuring method* |
CaO |
% |
1.377 |
0.008 |
4 |
1 |
SO3 |
% |
0.052 |
0.003 |
6 |
1,2 |
Cr2O3 |
% |
0.216 |
0.009 |
3 |
1 |
* Measuring method | |
1: X-ray fluorescence spectrometry |
2: Combustion with IR-detection |
3: detection with IR-/ UV-absorption after Combustion |
  |
Comment |
Thermal treatment before weighing: 105°C, 1 h |