Analyte | Unit | Certified value | Confidence interval (95%) |
No. of independent repeated series |
Measuring method* |
C |
% |
0.0648 |
0.0004 |
35 |
1 |
Cr |
% |
0.0344 |
0.0002 |
10 |
2 |
Co |
% |
0.0031 |
0.0001 |
10 |
2 |
V |
% |
0.0014 |
0.0001 |
10 |
2 |
* Measuring method | |
1: Combustion with coulometric detection |
2: ICP with optical emission spectrometry |
3: Combustion with IR-detection |
4: ICP with quadrupol mass spectrometry |