Analyte | Unit | Certified value | Confidence interval (95%) |
No. of independent repeated series |
Measuring method* |
C |
% |
0.0801 |
0.0008 |
3 |
1,2 |
Cr |
% |
0.0328 |
0.0002 |
3 |
3 |
B |
% |
< 0.00014 |
-.- |
2 |
5 |
Pb |
% |
0.00070 |
0.00005 |
3 |
4 |
Ca |
% |
0.0051 |
0.0001 |
3 |
3 |
* Measuring method | |
1: Combustion with coulometric detection |
2: Combustion with IR-detection |
3: ICP with optical emission spectrometry |
4: ICP with quadrupol mass spectrometry |
5: ICP with high resolution mass spectrometry |
6: Hot extraction with HC and IR detection |