Abstract

This document specifies a method for the determination of total organic carbon (TOC) in soil improvers and growing media containing more than 1 g carbon per kg of dry matter (0,1 %). NOTE 1 Samples with a low dry matter content can have an influence on the achievable limit of quantification as defined in the scope (i.e. 1 g carbon per kg of dry matter). 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 b, being composted bark (20 mm to 40 mm), biowaste compost (Rottegrad 3), green compost (Rottegrad 5, 0 mm to 15 mm), solid digestate, liquid digestate, soil improver (pellets, sieved 4 mm) and growing media blend 1 (white peat, green compost, wood fibre, lime, inorganic fertilizer (NPK + micro elements))).

Begin

2023-04-27

WI

00223111

Planned document number

DIN EN 18253

Project number

05702280

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 total organic carbon by dry combustion; German and English version prEN 18253:2025
2025-10
Order from DIN Media