Wastewater treatment plants - Part 5: Lagooning processes; German and English version prEN 12255-5:2022
Edition 2022-03

Chemicals used for treatment of water intended for human consumption - Iron (III) chloride sulfate; German version EN 891:2023
Edition 2023-05

Sanitary appliances - Methacrylic dispersions of high filler content; German version EN 15334:2007
Edition 2007-05

Surface active agents - Determination of the dispersing effect of surfactants on powder; German version EN 15647:2009
Edition 2009-04

Testing of ceramic raw materials and ceramic materials - Determination of pH value of suspensions of non-soluble powders
Edition 2003-02

Sample preparation - Dispersing procedures for powders in liquids (ISO 14887:2000)
Edition 2010-03

Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 1: Extraction of amorphous iron oxides and hydroxides with ascorbic acid (ISO 12782-1:2012); German version EN ISO 12782-1:2012
Edition 2012-09

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); surfactant biodegradation and elimination test for simulation of municipal waste water treatment plants (L 26)
Edition 1994-05

Recreational diving services - Requirements for training on environmental awareness for recreational divers (ISO 21417:2019); German version EN ISO 21417:2019
Edition 2019-12

Water quality - Guidance standard on determining the degree of modification of lake hydromorphology; German version EN 16870:2017
Edition 2017-05