Hydrology; terms relating to quality of waters
Edition 1990-04

Water quality - Spectrophotometric determination of chlorophyll-a content by ethanol extraction for the routine monitoring of water quality; German and English version prEN 17899:2022
Edition 2022-10

Leaching of solid materials - Batch test for the examination of the leaching behaviour of inorganic and organic substances at a liquid to solid ratio of 2 l/kg
Edition 2023-07

Execution of special geotechnical work - Bored piles; German version EN 1536:2010+A1:2015
Edition 2015-10

German standard methods for the examination of water, waste water and sludge - General informations (group A) - Part 24: Guidance on sampling of suspended sediments (A 24)
Edition 2007-05

Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO/DIS 18724:2024); German and English version prEN ISO 18724:2024
Edition 2024-07

Water quality - Requirements for the performance testing of membrane filters used for direct enumeration of microorganisms by culture methods (ISO 7704:2023); German version EN ISO 7704:2023
Edition 2023-12

Earthworks and foundation engineering - Test methods for supporting fluids used in the construction of diaphragm walls and their constituent products
Edition 2014-02

Water quality - Determination of total cyanide and free cyanide using flow analysis (FIA and CFA) - Part 2: Method using continuous flow analysis (CFA) (ISO 14403-2:2012); German version EN ISO 14403-2:2012
Edition 2012-10

Solid recovered fuels - Methods for the determination of biomass content (ISO 21644:2021, Corrected version 2021-03); German version EN ISO 21644:2021
Edition 2021-07