FprEN 18255

Soil improvers and growing media - Determination of organic nitrogen

Publication date:   Oct 9, 2025

General information

45.99   Dispatch of FV draft to CCMC   Jul 28, 2026

CEN

CEN/TC 223 Soil improvers and growing media

European Norm

65.080   Fertilizers

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Scope

This document specifies a method for the determination of the organic nitrogen content in soil improvers and growing media.
NOTE 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 composted bark (20 mm to 40 mm), biowaste compost (Rottegrad 3), green compost (Rottegrad 5,0 mm to 15 mm), solid digestate and growing media blend 1: white peat, green compost, wood fibre, lime, inorganic fertilizer (NPK + micro elements))).

Related legislation

Legislation related to this standard

2019/1009

Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003 (Text with EEA relevance)

Life cycle

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FprEN 18255
45.99 Dispatch of FV draft to CCMC
Jul 28, 2026