dnaSRPS EN 18316:2025

Neorganska đubriva –Određivanje ukupnog sadržaja K2O gravimetrijom i optičkom emisionom spektrometrijom sa induktivno spregnutom plazmom (ICP-OES)

Inorganic fertilizers - Determination of the total K2O content by gravimetry and inductively coupled plasma optical emission spectrometry (ICP-OES)

Apstrakt

This document specifies two different methods (Method A and Method B) for the determination of the total potassium content (expressed as K2O) in inorganic fertilizers soluble in mineral acids. 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 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 and plant biostimulants, and where inorganic fertilizers are 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.
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.

Povezane direktive

NAPOMENA: Ukoliko se u polju sa nazivom direktive ne nalazi reč „harmonizovan“ (obeležena zelenom bojom), to znači da evropski standard nije citiran u OJEU.