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NA 119

DIN Standards Committee Water Practice

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Projects of NA 119

Number: 422

ISO/AWI TR 27936 2025-06-06 Traceability of Carbon data in CCS Chain Based on Blockchain More  Comment 
DIN EN ISO 6461-2 rev 2025-06-06 Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) - Part 2: Method by membrane filtration More  Comment 
ISO/CD 25807 2025-05-28 Water quality - Guidance on laboratory procedures mechanical homogenization and DNA extraction of aquatic macroinvertebrate samples More  Comment 
ISO/CD 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 ISO 15936 2025-05-27 Soil, waste, treated biowaste and sludge - Determination of total organic carbon (TOC) by dry combustion (ISO/DIS 15936:2025); German and English version prEN ISO 15936:2025 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 version EN 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 version EN 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 version EN 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 version EN ISO 23696-2:2025 More  Comment 

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