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ISO 25705:2016

Fertilizers — Determination of urea condensates using high-performance liquid chromatography (HPLC) — Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)

Publication date:   Apr 6, 2016

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

ISO/TC 134 Fertilizers, soil conditioners and beneficial substances

International Standard

65.080   Fertilizers

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Scope

ISO 25705:2016 specifies methods for the determination of isobutylidene diurea (IBDU), Crotonylidene diurea (CDU) (method A) and methylene-urea oligomers (MU) (method B) in fertilizers using high-performance liquid chromatography (HPLC).
The method is applicable to all fertilizers which do not contain interfering organic compounds.

Life cycle

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PUBLISHED
ISO 25705:2016
90.20 Standard under periodical review
Jul 15, 2026

Relations

Adopted from EN 15705:2010