DIN Standards Committee Food and Agricultural Products
Soil improvers and growing media - Determination of organic matter content and ash; German and English version EN 13039:2025
Abstract
This document specifies a routine method for determining the organic matter and the ash content of soil improvers and growing media. NOTE 1 The loss on ignition (LOI) is often used as an estimate for the content of organic matter in the sample. Inorganic substances or decomposition products (e.g. H2O, CO2, SO2, O2) are released or absorbed and some inorganic substances are volatile under the reaction conditions. Thus, a conversion to the organic carbon content is not possible. NOTE 2 This method has been validated in an interlaboratory study with specific products that were present on the market during the study (as included in Annex A, being bark (Pinus pinaster, 20 mm to 40 mm fraction), green compost (Rottegrad 5,0 mm to 15 mm), liquid digestate, mineral wool, soil improver (pellets, sieved 4 mm) and growing media blend (white peat, black peat, expanded perlite, lime, organic fertilizer)).
Begin
2023-04-23
WI
00223099
Planned document number
DIN EN 13039
Project number
05702208
Responsible national committee
NA 057-03-01 AA - Soil improvers and growing media
Responsible european committee
CEN/TC 223/WG 4 - Analytical methods
draft standard
Soil improvers and growing media - Determination of organic matter content and ash; German and English version prEN 13039:2025
2025-10
Order from DIN Media
