Wastewater treatment plants - Part 4: Primary settlement; German version EN 12255-4:2002
Edition 2002-04

Wastewater treatment plants - Part 11: General data required; German version EN 12255-11:2001
Edition 2001-07

Wastewater treatment plants - Part 6: Activated sludge process; German version EN 12255-6:2002
Edition 2002-04

Wastewater treatment plants - Part 7: Biological fixed-film reactors; German version EN 12255-7:2002
Edition 2002-04

Reinforcement - Specifications for woven fabrics - Part 3: Specific requirements; German version EN 13417-3:2001
Edition 2002-03

Wastewater treatment plants - Part 14: Disinfection; German version EN 12255-14:2003
Edition 2004-03

Wastewater treatment plants - Part 8: Sludge treatment and storage; German version EN 12255-8:2001
Edition 2001-10

Wastewater treatment plants - Part 9: Odour control and ventilation; German version EN 12255-9:2002
Edition 2002-04

Foodstuffs - Molecular biomarker analysis - Immunochemical methods for the detection and quantification of proteins (ISO 21572:2019); German version EN ISO 21572:2019
Edition 2020-02

Preparation of steel substrates before application of paints and related products - Test methods for non-metallic blast-cleaning abrasives - Part 8: Field determination of water-soluble chlorides (ISO 11127-8:2020); German and English version prEN ISO 11127-8:2024
Edition 2024-09