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ISO 19747:2020

Fertilizers and soil conditioners — Determination of monosilicic acid concentrations in nonliquid fertilizer materials ISO 19747:2020

Publication date:   Oct 29, 2020

General information

60.60 Standard published   Oct 29, 2020

ISO

ISO/TC 134 Fertilizers, soil conditioners and beneficial substances

International Standard

65.080   Fertilizers

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Scope

This document establishes a method for the determination of monosilicic acid concentrations in nonliquid fertilizer materials. Monosilicic acid is reported as silicon (Si).
This extraction method is applicable to the detection of monosilicic acid in nonliquid fertilizer products, blended products, and beneficial substances at silicon (Si) concentrations of 2 to 84 g/kg, with a limit of detection (LOD) of 0,6 g/kg Si, and a limit of quantification (LOQ) of 2 g/kg correlating well with plant uptake.
This method is not applicable to liquid silicon fertilizer sources due to an expected low bias of Si recovery and low correlation with plant uptake.

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PUBLISHED
ISO 19747:2020
60.60 Standard published
Oct 29, 2020