• Hydrogen Technologies Standards form the basic framework for market ramp-up

    More information
  • Climate change Standards and specifications support climate targets

    More information
  • Smart Farming Standards and specifications are drivers for the digitalization of agriculture

    More information

Projects of CEN/TC 223/WG 4

Document number Begin Title Comment
DIN EN 18252 2023-04-23 Soil improvers and growing media - Determination of the chloride content; German and English version prEN 18252:2025 More  Comment 
DIN EN 13654-1 2023-04-23 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; German and English version prEN 13654-1:2025 More  Comment 
DIN EN 13651 2023-04-23 Soil improvers and growing media - Extraction of calcium chloride/DTPA (CAT) soluble nutrients; German and English version prEN 13651:2025 More  Comment 
DIN EN 18258 2023-04-23 Soil improvers and growing media - Determination of the mercury content; German and English version prEN 18258:2025 More  Comment 
DIN EN 18257 2023-04-23 Soil improvers and growing media - Determination of chromium(VI); German and English version prEN 18257:2025 More  Comment 
DIN EN 18259 2023-04-23 Soil improvers and growing media - Determination of aqua regia soluble elements; German and English version prEN 18259:2025 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 and English version prEN 13040-1:2025 More  Comment 
DIN EN 13037 2021-10-04 Soil improvers and growing media - Determination of pH; German and English version prEN 13037:2025 More  Comment 
DIN EN 13038 2021-10-04 Soil improvers and growing media - Determination of electrical conductivity; German and English version prEN 13038:2025 More  Comment 
DIN EN 13654-2 2021-10-04 Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method; German and English version prEN 13654-2:2025 More  Comment 

TOP