DIN Standards Committee Food and Agricultural Products
Soil improvers and growing media — Determination of aqua regia soluble elements
Abstract
This document specifies a method for the determination of elements in soil improvers or growing media extracts using inductively coupled plasma-atomic emission spectrometry (ICP-AES). NOTE 1 Alternatively, other suitable analytical techniques, e.g. inductively coupled plasma mass spectrometry (ICP-MS) or atomic absorption spectrometry (AAS), are suitable for the measurement if the user proves that the method gives the same results. This method is applicable to aqua regia extracts prepared according to EN 13650. NOTE 2 The method is suitable for the determination of other elements, provided the user has verified the applicability. NOTE 3 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 biowaste compost (dry HM spiked, Rottegrad 3, milled, sieved at 0,5 mm, dried and spiked), green compost (dry HM spiked, Rottegrad 5, milled, sieved at 0,5 mm, dried and spiked), liquid digestate (HM spiked, sieved 0 mm to 12 mm, spiked), expanded clay (dry HM spiked, milled, sieved at 0,5 mm, dried and spiked), mineral wool (fresh), soil improver (dry HM spiked, milled, sieved at 0,5 mm, dried and spiked) and growing media blend 1 dry HM spiked, white peat, green compost, wood fibre, lime, inorganic fertilizer (NPK + micro elements), milled, sieved at 0,5 mm, dried and spiked)).
Begin
2023-04-23
WI
00223142
Planned document number
DIN EN 18259
Project number
05702667
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 aqua regia soluble elements; German and English version prEN 18259:2025
2025-11
Order from DIN Media
