NS EN 14671 : 1ED 2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Limitations and interferences
6 Hazards
7 Reagents
8 Apparatus
9 Sample pre-treatment
10 Procedure
11 Expression of results
12 Test report
Annex A (informative) - Performance data of the
        interlaboratory comparison - Summary of
        sludge exchangeable ammonia results
Bibliography

Describes a procedure for the determination of extractable ammonia using a 2 mol/l potassium chloride solution in raw and digested sewage sludges. The range of the method is up to 100 g/kg N assuming appropriate dilution of the potassium chloride extract in the final measurement step.