German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 13: Determination of cyanides (D 13)
Edition 2011-04

Chemicals used for treatment of water intended for human consumption - Hydrogen peroxide; German version EN 902:2016
Edition 2016-09

Water quality - Performance requirements and conformity test procedures for water monitoring equipment - Automated sampling devices (samplers) for water and waste water; German version EN 16479:2014
Edition 2014-09

Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, anhydrous; German version EN 12931:2015
Edition 2015-05

Chemicals used for treatment of water intended for human consumption - Sodium chlorite; German version EN 938:2016
Edition 2016-09

Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, dihydrate; German version EN 12932:2015
Edition 2015-05

Chemicals used for treatment of water intended for human consumption - Calcium hypochlorite; German version EN 900:2014
Edition 2014-09

Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Trichloroisocyanuric acid; German version EN 12933:2015
Edition 2015-05

Imaging materials - Processed silver-gelatin-type black-and-white films - Specifications for stability (ISO 18901:2010)
Edition 2012-07

Chemicals used for treatment of water intended for human consumption - Sodium chloride for regeneration of ion exchangers; German version EN 973:2009
Edition 2009-12