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FprEN 17403

Inorganic 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

Publication date:   Feb 26, 2026

General information

45.99   Dispatch of FV draft to CCMC   Aug 12, 2026

CEN

CEN/TC 260 Fertilizers and liming materials

European Norm

65.080   Fertilizers

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Scope

This document specifies a method for the determination of the cold and hot water insoluble nitrogen content in solid urea formaldehyde and methylene urea slow-release fertilizers and for the determination of the solubility of nutrient polymers in a phosphate buffer solution with a pH of 7,5 at 100 °C, in their pure form in inorganic fertilizers.
This document is not applicable to the following nutrient polymers: liquid methylene urea.

Related legislation

Legislation related to this standard

2019/1009

Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003 (Text with EEA relevance)

Legislation 2019/1009

Life cycle

PREVIOUSLY

PUBLISHED
CEN/TS 17403:2021

NOW

IN_DEVELOPMENT
FprEN 17403
45.99 Dispatch of FV draft to CCMC
Aug 12, 2026