BS EN 15476:2009 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Devarda
BS EN 15476 specifies a method for the determination of the ammoniacal nitrogen content in fertilizers. The method is applicable to all nitrogenous fertilizers including compound fertilizers, in which nitrogen is found exclusively either in the form of ammonium salts or ammonium salts together with nitrates.
BS EN 15476 is not applicable to fertilizers containing urea, cyanamide or other organic nitrogenous compounds.
Contents of BS EN 15476:
- Foreword
- Scope
- Normative references
- Terms and definitions
- Principle
- Reagents
- Apparatus
- Sampling and sample preparation
- Procedure
- Calculation and expression of the result
- Precision
- Test report
- Results of the inter-laboratory tests
- Bibliography