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NA 119

DIN Standards Committee Water Practice

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Projects of NA 119

Number: 419

ISO/AWI 13808-1 2025-11-13 Water quality - Non-target screening of organic compounds in water using chromatography and mass spectrometry - Part 1: General guidelines More  Comment 
ISO/CD 21744 2025-11-07 Environmental solid matrices - Guidance for sample pretreatment More  Comment 
DIN EN ISO 13169 2025-11-06 Water quality - Uranium - Test method using alpha liquid scintillation counting (ISO/DIS 13169:2025); German and English version prEN ISO 13169:2025 More  Comment 
DIN EN ISO 17184 rev 2025-11-05 Soil quality - Determination of carbon and nitrogen by near-infrared spectrometry (NIRS) More  Comment 
DIN 4900-1 2025-11-05 Steel filter and solid wall pipes for wells - Part 1: Solid wall pipes and slot perforation filters More  Comment 
DIN 4900-2 2025-11-05 Steel filter and solid wall pipes for wells - Part 2: Wire wrapped screens made of stainless steel More  Comment 
DIN 4904 2025-11-05 Poured sealing clay for well construction - Requirements and testing More  Comment 
DIN 1239 2025-11-05 Coverings for wells, spring water chambers and other water supply construction - Principles for construction More  Comment 
DIN 4944 2025-11-05 Closures for groundwater measuring stations More  Comment 
DIN ISO 13536 2025-11-05 Soil quality - Determination of thepotential cation exchange capacity and exchangeable cations using barium chloride solution buffered at pH = 8,1 (ISO 13536:1995) More  Comment 

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