XP CEN/TS 17403

Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with a pH of 7,5 at 100 °C

Le présent document spécifie une méthode pour la détermination de la teneur en azote insoluble dans l'eau froide et dans l'eau chaude dans les engrais à libération lente urée-formaldéhyde solides et méthylène-urée, et pour la détermination de la solubilité des polymères nutritifs dans une solution tampon de phosphate avec un pH de 7,5 à 100 °C.

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