ISO 25475:2016
Fertilizers - Determination of ammoniacal nitrogen
- Standard No.
- ISO 25475:2016
- Release Date
- 2016
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 25475:2016
- Scope
- This International Standard 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. This International Standard is not applicable to fertilizers containing urea, cyanamide or other organic nitrogenous compounds.
ISO 25475:2016 Referenced Document
- EN 12944-1:1999 Fertilizers and Liming Materials - Vocabulary - Part 1: General Terms
- EN 12944-2:1999 Fertilizers and Liming Materials - Vocabulary - Part 2: Terms Relating to Fertilizers
- ISO 14820-1:2016 Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling*， 2016-05-01 Update
- ISO 14820-2:2016 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation*， 2016-05-01 Update
- ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
- ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions
ISO 25475:2016 history
- 2016 ISO 25475:2016 Fertilizers - Determination of ammoniacal nitrogen
