DIN Standards Committee Food and Agricultural Products
Organo-mineral fertilizers — Extraction of phosphorus by formic acid; German and English version FprEN 17767:2026
Abstract
This document specifies a procedure for the extraction of different organo-mineral fertilizers with 2 % formic acid (20 g/l) to enable a subsequent determination of phosphorus according to FprEN 17774, representing the amount of soft natural phosphates. The method is also applicable to organic fertilizers. This document is applicable to fertilizing product blends, where the blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant biostimulants, and where the following category: organic fertilizers or organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. NOTE Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.
Begin
2025-06-10
WI
00260324
Planned document number
DIN EN 17767
Project number
05702818
Responsible national committee
Responsible european committee
CEN/TC 260/WG 8 - Organic and organo-mineral fertilizers
draft standard
Organo-mineral fertilizers - Extraction of phosphorus by formic acid; German and English version prEN 17767:2026
2026-02
Order from DIN Media
