National foreword
Method
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Expression of results
9 Special cases
10 Test report
Annexes
A Additional information on the international
co-operative tests
B Graphical representation of precision data
Figure
B.1 Relationship between vanadium content and
repeatability (r) and between vanadium content and
reproducibility (Rw and R)