Construction products - Assessment of release of dangerous substances - Determination of activity concentrations of radium-226, thorium-232 and potassium-40 in construction products using semiconductor gamma-ray spectrometry (Endorsed by Asociación Española de Normalización in December of 2018.)
Edition 2018-12-01

Animal feeding stuffs - Determination of the contents of calcium, copper, iron, magnesium, manganese, potassium, sodium and zinc. Method using atomic absorption spectrometry. (ISO 6869:2000)
Edition 2001-10-19

Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide (ISO 11427:2014)
Edition 2017-03-01

Hardmetals - Determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc in cobalt metal powders - Flame atomic absorption spectrometric method (ISO 11876:2010)
Edition 2011-09-21

Oilseed meals - Determination of soluble proteins in potassium hydroxide solution (ISO 14244:2014)
Edition 2017-03-08

Solid biofuels - Determination of the water soluble chloride, sodium and potassium content (ISO 16995:2015)
Edition 2015-06-10

Chemicals used for treatment of water intended for human consumption - Potassium dihydrogen orthophosphate
Edition 2005-12-28

Chemicals used for treatment of water intended for human consumption - Potassium tripolyphosphate
Edition 2006-03-01

Chemicals used for treatment of water intended for human consumption - Potassium permanganate
Edition 2016-09-14

Chemical used for treatment of water intended for human consumption - Potassium peroxomonosulfate
Edition 2016-09-07