This European Standard specifies a method for the determination of total and water extractable boron in mineral fertilizers containing less than or equal to 10 % boron. The method is not suitable for fertilizers with Fe concentrations more than twenty times higher than the concentration of boron. This method is applicable to water and aqua regia fertilizer extracts obtained according to EN 16962 and/or EN 16964. The method can also be used for the determination of boron in mineral fertilizers containing more than 10 % boron after appropriate dilution of the extracts.
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EN 12944-1:1999 Fertilizers and liming materials and soil improvers - Vocabulary - Part 1: General terms
EN 12944-2:1999 Fertilizers and liming materials and soil improvers - Vocabulary - Part 2: Terms relating to fertilizers
EN 1482-2:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
EN 12944-1:1999 Fertilizers and liming materials and soil improvers - Vocabulary - Part 1: General terms
EN 12944-2:1999 Fertilizers and liming materials and soil improvers - Vocabulary - Part 2: Terms relating to fertilizers
EN 1482-2:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
EN 16962:2018 Fertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts
EN 16964:2018 Fertilizers - Extraction of total micro-nutrients in fertilizers using aqua regia
EN ISO 3696:1995 Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)