German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of Daphnia to the toxicity of waste water by way of a dilution series (L 30)
Edition 1989-03

Chemicals used for treatment of water intended for human consumption - Sodium carbonate; German version EN 897:2012
Edition 2013-02

Chemical disinfectants and antiseptics - Quantitative surface test for the evaluation of teat disinfectants used in the veterinary area - Test method and requirements (phase 2 step 2); German version EN 17422:2022
Edition 2022-09

Chemicals used for treatment of swimming pool water - Sodium peroxodisulfate; German version EN 16381:2013
Edition 2014-03

Chemical disinfectants - Quantitative suspension test for the evaluation of sporicidal activity of chemical disinfectants used in food, industrial, domestic and institutional areas - Test method and requirements (phase 2, step 1); German version EN 13704:2018
Edition 2018-09

Admixtures for concrete, mortar and grout - Test methods - Part 12: Determination of the alkali content of admixtures; German version EN 480-12:2005
Edition 2005-12

Water quality - Guidance standard on the enumeration of phytoplankton using inverted microscopy (Utermöhl technique); German version EN 15204:2006
Edition 2006-12

Zinc and zinc alloys - Chemical analysis - Part 11: Determination of silicon in zinc alloys - Spectrophotometric method; German version EN 12441-11:2006
Edition 2006-10

Chemical disinfectants and antiseptics - Quantitative surface test for the evaluation of fungicidal or yeasticidal activity of chemical disinfectants and antiseptics used in the veterinary area on non-porous surfaces without mechanical action - Test method and requirements (phase 2, step 2); German version EN 16438:2014
Edition 2014-07

Fertilizers - Determination of the sodium extracted by flame-emission spectrometry; German version EN 16199:2012
Edition 2013-01