DIN Standards Committee Food and Agricultural Products
Inorganic fertilizers - Determination of the total K2O content
Abstract
This document specifies two different methods (Method A and B) for the determination of the content of potassium (expressed as K2O) in inorganic fertilizers. Method A specifies a gravimetric method. Method B specifies the method using inductively coupled plasma optical emission spectrometry (ICP-OES). This document is applicable to the fertilizing products blends where a 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: inorganic fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If inorganic fertilizers are 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. There is a possibility that the use of an analytical method specific to one of the components of the fertilizing product blend can give deviating results compared to other methods meant for the same analyte contained in another component due to analytical interferences by means of variances in the sample matrix.
Begin
2025-11-28
WI
00260271
Planned document number
DIN EN 00260271
Project number
05702499
