1 Scope
2 Normative references
3 Terms and definitions
4 Method A: Extraction method
4.1 Principle
4.2 Reagents
4.3 Apparatus
4.4 Preparation of test sample
4.5 Procedure
4.6 Expression of results
4.7 Precision
4.8 Test report
5 Method B: Dissolution method
5.1 Principle
5.2 Reagents
5.3 Apparatus
5.4 Preparation of internal standard solutions
5.5 Procedure
5.6 Expression of results
5.7 Precision
5.8 Test report