DIN Standards Committee Food and Agricultural Products
Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 5: Sample preparation for microbiological examination
Abstract
This document specifies the procedure for sample preparation prior to microbiological examination. This document is applicable to organic, organo-mineral and inorganic fertilizers which contain more than 1 % by mass of organic carbon, other than organic carbon from chelating or complexing agents, nitrification inhibitors, denitrification inhibitors or urease inhibitors, coating agents, urea or calcium cyanamide. This document is also applicable to fertilizing product blends, where a blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors or plant biostimulants, and where the following category: organic fertilizers, organo-mineral fertilizers or inorganic 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, the organo-mineral fertilizer or the inorganic fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing products 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 analyzing fertilizing product blends are possible. This document is not applicable to liming materials or inhibitors.
Begin
2026-03-12
WI
00260348
Planned document number
00260348
