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dnaSRPS EN 18317:2025

Organo-mineral fertilizers - Determination of the N-(n-butyl)thiophosphoric triamide (NBPT) urease inhibitor content

General information

50.20     Sep 24, 2026

50.60    Nov 19, 2026

ISS

H134

European Norm

65.080  

English  

Scope

This document specifies a method for the determination of the urease inhibitor
N-(n-butyl)thiophosphoric triamide (NBPT) and its oxidate form N-(n-butyl)phosphoric triamide (NBPTO) in urea based organo-mineral fertilizers, using the liquid chromatography coupled with triple quadrupole mass spectrometry (LC-MSQQQ).
This document is applicable to organo-mineral fertilizers.
NOTE It is possible to apply this method to inorganic fertilizers; in this case, a validation is carried out by a laboratory for the procedure and data generated.

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.

2019/1009

Life cycle

NOW

PROJECT
dnaSRPS EN 18317:2025
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Sep 24, 2026

Related project

Adopted from FprEN 18317 IDENTICAL

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