This document specifies a method for the digestion of soil improvers and growing media using an aqua regia digestion.
Materials containing more than about 28 % (m/m) organic matter will require treatment with additional nitric acid. With high solute concentrations in extract solutions, spectral interferences and background enhancement should be expected.
NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.
PUBLISHED
SRPS EN 13650:2008
PROJECT
naSRPS EN 13650:2023
40.10
harmonizedStageCodeLabel.40.10
Aug 14, 2025