Glass and glassware; analysis of extract solutions; part 2: determination of sodium oxide and potassium oxide by flame spectrometric methods
Edition 1993-07

Photography - Processing chemicals - Specifications for potassium thiocyanate
Edition 1996-10

Soil quality - Determination of the potential cation exchange capacity and exchangeable cations using barium chloride solution buffered at pH = 8,1
Edition 1995-06

Chemicals used for treatment of swimming pool water - Potassium peroxomonosulfate; German version EN 16380:2013
Edition 2014-03

Chemicals used for treatment of water intended for human consumption - Potassium permanganate; German version EN 12672:2016
Edition 2016-09

Chemical used for treatment of water intended for human consumption - Potassium peroxomonosulfate; German version EN 12678:2016
Edition 2016-12

Construction products - Assessment of release of dangerous substances - Determination of radium-226, thorium-232 and potassium-40 activity using gamma-ray spectrometry; German and English version prEN 17216:2023
Edition 2023-07

Chemicals used for treatment of water intended for human consumption - Potassium dihydrogen orthophosphate; German version EN 1201:2005
Edition 2005-06

Chemicals used for treatment of water intended for human consumption - Potassium tripolyphosphate; German version EN 1211:2005
Edition 2005-06

Fertilizers - Determination of the water-soluble potassium content; German version EN 15477:2009
Edition 2009-04