NF EN 17864

NF EN 17864

December 2023
Standard Current

Inorganic fertilizers - Determination of nitrogen content in IBDU (isobutylidenediurea) and CDU (crotonylidenediurea)

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Main informations

Collections

National standards and national normative documents

Publication date

December 2023

Number of pages

14 p.

Reference

NF EN 17864

ICS Codes

65.080   Fertilizers

Classification index

U42-156

Print number

2 - 01/02/2024

European kinship

EN 17864:2023
Replaced standards (1)
NF EN 15705
June 2010
Standard Cancelled
Fertilizers - Determination of urea condensates using highperformance liquid chromatography (HPLC) - Isobutylidenediurea and crotonylidenediurea (method A) and methylene-urea oligomers (method B)

Le présent document spécifie les méthodes de dosage de l'isobutylidène diurée (IBDU), de la crotonylidène diurée (CDU) et des oligomères de méthylène-urée (MU) dans les engrais par chromatographie liquide haute performance (HPLC). Il s'applique à tous les engrais qui ne contiennent pas de composés organiques interférents.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Réactifs
  • 6 Appareillage et matériel
  • 7 Échantillonnage et préparation de l'échantillon
  • 8 Mode opératoire
  • 9 Calcul et expression du résultat
  • 10 Fidélité
  • 11 Rapport d'essai
  • A Résultats des essais interlaboratoires
  • B Exemples de chromatogramme et de courbes de calibration
  • C Exemple de conditions pour un système HPLC approprié
  • Bibliographie
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