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DIN EN ISO 23695

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023); German and English version prEN ISO 23695:2025

Project

prEN ISO 23695

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023)

Project

prEN 15957 rev

Inorganic fertilizers - Extraction of phosphorus which is soluble in neutral ammonium citrate

Project

DIN EN 15957 rev

Inorganic fertilizers - Extraction of phosphorus which is soluble in neutral ammonium citrate

Project

prEN 17779

Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium citrate solution

Project

DIN EN 17779

Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium citrate solution

Project

DIN EN 13654-1

Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method

Project

prEN 13654-1 rev

Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method

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