Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
Edition 1993-11

Chemicals used for treatment of water intended for human consumption - Aluminium-based coagulants - Analytical methods; German and English version prEN 1302:2023
Edition 2023-06

Cigarettes - Determination of nicotine in total particulate matter from the mainstream smoke - Gas-chromatographic method (ISO 10315:2021)
Edition 2022-04

Determination of lactoperoxidase activity in milk - Part 1: Photometric method (Reference method)
Edition 2002-08

Copper covered steel wires and copper covered steel stranded conductors; technical delivery conditions
Edition 1984-03

Fertilizers - Description of the forms of the physical unit; German version EN 17836:2024
Edition 2024-09

Chemicals used for treatment of water intended for human consumption - Sodium hypochlorite; German and English version prEN 901:2023
Edition 2024-01

Determination of sulfur content of steel and iron by infrared absorption spectroscopy after combustion in an induction furnace (ISO 4935:1989); german version EN 24935:1991
Edition 1992-07

Petroleum products and lubricants - Determination of acid number - Non-aqueous potentiometric titration method; German version EN 12634:1998
Edition 1999-02

Determination of individual and total sterols contents - Gas chromatographic method - Part 1: Animal and vegetable fats and oils (ISO 12228-1:2014); German version EN ISO 12228-1:2014
Edition 2014-10