What is BS EN 15475 - Ammoniacal nitrogen in fertilizers about?
BS EN 15475 is a standard that serves technical specifications for determining ammoniacal nitrogen in fertilizers, which enables the lowering of growing medium pH for optimum plant growth. BS EN 15475 specifies a method for determining the ammoniacal nitrogen content in fertilizers.
BS EN 15475 method applies 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.
Note: BS EN 15475 does not cover fertilizers containing urea, cyanamide or other organic nitrogenous compounds.
Who is BS EN 15475 - Ammoniacal nitrogen in fertilizers for?
BS EN 15475 on the ammoniacal nitrogen in fertilizers applies to:
- Manufacturers of fertilizers
- Dealers and importers of fertilizers
- Testing labs for fertilizers
- Quality assurance services
- Regulatory bodies
Why should you use BS EN 15475 - Ammoniacal nitrogen in fertilizers?
When a plant absorbs ammoniacal nitrogen, it is transformed to ammonia (NH3) in the root. Ammoniacal nitrogen can also be made available to plants through a process known as nitrification. Its use in winter, however, may lead to ammonium toxicity.
BS EN 15475 provides users guidance on a method for determining ammoniacal nitrogen content in fertilizers. BS EN 15475 also provides users with a step-by-step procedure for the method, enabling users to do the method correctly.
BS EN 15475 provides users guidance on principle, reagents, apparatus, sampling, sample preparation, procedure, calculations, expression of results, precision and test report, enabling the accurate determination of ammoniacal nitrogen in fertilizers.
With obedience and compliance of BS EN 15475, users can determine ammoniacal nitrogen in fertilizers, enabling the prevention of ammonia toxicity in winter and increasing nitrogen use efficiency.
