ISO 7851:2022

This document establishes a system of classification for fertilizers, soil conditioners and beneficial substances. The system of classification is in accordance with:
—    the nutrient contents of the fertilizer;
—    the effect of the fertilizer;
—    the type of product; and
—    the acidity and alkalinity of the product as a supplement.
It is applicable to fertilizers, soil conditioners and beneficial substances. The classification scheme for fertilizers, soil conditioners and beneficial substances (in accordance with nutrient contents) is shown in Annex A.