Projects of CEN/TC 223/WG 4

DIN EN 18257 2023-04-23 Soil improvers and growing media - Determination of chromium(VI); German version FprEN 18257:2026 More  Comment 
DIN EN 13040-1 2023-04-23 Soil improvers and growing media — Sample preparation — Part 1: Sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory bulk density; German version FprEN 13040-1:2026 More  Comment 
DIN EN 13654-1 2023-04-23 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; German version FprEN 13654-1:2026 More  Comment 
DIN EN 18251 2023-04-23 Soil improvers and growing media - Determination of phosphonates content; German version FprEN 18251:2026 More  Comment 
DIN EN 18258 2023-04-23 Soil improvers and growing media — Determination of the mercury content; German version FprEN 18258:2026 More  Comment 
DIN EN 13039 2023-04-23 Soil improvers and growing media - Determination of organic matter content and ash; German version FprEN 13039:2026 More  Comment 
DIN EN 13650 2023-04-23 Soil improvers and growing media - Digestion by aqua regia for subsequent determination of elements; German version FprEN 13650:2026 More  Comment 
DIN EN 13651 2023-04-23 Soil improvers and growing media — Extraction of calcium chloride/DTPA (CAT) soluble nutrients and elements; German version FprEN 13651:2026 More  Comment 
DIN EN 13038 2021-10-04 Soil improvers and growing media - Determination of electrical conductivity; German version FprEN 13038:2026 More  Comment 
DIN EN 13654-2 2021-10-04 Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method; German version FprEN 13654-2:2026 More  Comment 

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