CEN - EN 15705
Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
Organization: | CEN |
Publication Date: | 1 December 2023 |
Status: | active |
Page Count: | 20 |
ICS Code (Fertilizers): | 65.080 |
scope:
This document specifies a method for the determination of methylen-urea (MU) oligomers in inorganic fertilizers using high-performance liquid chromatography (HPLC).
The method is applicable to all fertilizers which do not contain interfering organic compounds.
NOTE By the condensation of urea and formaldehyde, several oligomers are formed, such as methylen- diurea (MDU), dimethylen-triurea (DMTU), trimethylen-tetraure