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NA 119

DIN Standards Committee Water Practice

About NAW Projects Drafts Publications Documents withdrawn without replacement National committees European committees International committees

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Projects of NA 119

Number: 405

ISO/AWI 25806 2025-05-28 Water quality - Guidance on field and laboratory procedures for aquatic macroinvertebrate sample preservation for DNA based analyses More  Comment 
ISO/AWI 6461-2 2025-05-28 Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) - Part 2: Method by membrane filtration More  Comment 
DIN EN 17892/A1 2025-05-27 Water quality - Determination of selected per- and polyfluoroalkyl substances in drinking water - Method using liquid chromatography/tandem-mass spectrometry (LC-MS/MS) More  Comment 
DIN EN ISO 10694 2025-05-27 Soil quality - Determination of organic and total carbon after dry combustion (elementary analysis) More  Comment 
DIN EN ISO 23696-1 2025-05-23 Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023); German and English version prEN ISO 23696-1:2025 More  Comment 
DIN EN ISO 23697-1 2025-05-23 Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23697-1:2023); German and English version prEN ISO 23697-1:2025 More  Comment 
DIN EN ISO 23697-2 2025-05-23 Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023); German and English version prEN ISO 23697-2:2025 More  Comment 
DIN EN ISO 23696-2 2025-05-22 Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23696-2:2023); German and English version prEN ISO 23696-2:2025 More  Comment 
DIN EN 545 rev 2025-05-20 Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test methods More  Comment 
DIN EN ISO 23695 2025-05-20 Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023); German and English version prEN ISO 23695:2025 More  Comment 

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