Abstract / scope
The method is suitable as a reference method and is applicable to all fertilizers. It consists in precipitating of nitrate ions in acid solution as a complex with nitron reagent, filtrating of the precipitate, drying and weighing.
ISO 4176:1981Withdrawn
Fertilizers — Determination of nitrate nitrogen content — Nitron gravimetric method
Engrais — Dosage de l'azote nitrique — Méthode gravimétrique au nitron