Characterization of sludges - Pre-treatment for the determination of extractable ammonia using 2 mol/l potassium chloride
Edition 2007-02-28

Fertilizers - Determination of the water-soluble potassium content
Edition 2009-05-27

Animal feeding stuffs: Methods of sampling and analysis - Determination of calcium, sodium, phosphorus, magnesium, potassium, iron, zinc, copper, manganese, cobalt, molybdenum and lead by ICP-AES
Edition 2018-03-21

Animal feeding stuffs: Methods of sampling and analysis - Determination of calcium, sodium, phosphorus, magnesium, potassium, sulphur, iron, zinc, copper, manganese and cobalt after pressure digestion by ICP-AES
Edition 2018-03-21

Chemicals used for treatment of swimming pool water - Potassium peroxomonosulfate
Edition 2014-03-19

Liquid petroleum products - Determination of Sodium, Potassium, Calcium, Phosphorus, Copper and Zinc contents in diesel fuel - Method via Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES)
Edition 2014-11-26

Foodstuffs - Determination of calcium, copper, iron, magnesium, manganese, phosphorus, potassium, sodium, sulfur and zinc by ICP-OES
Edition 2017-11-29

HARDMETALS. CHEMICAL ANALYSIS BY FLAME ATOMIC. ABSORPTION SPECTROMETRY. PART 2: DETERMINATION OF CALCIUM, POTASSIUM, MAGNESIUM AND SODIUM IN CONTENTS FROM 0,001 TO 0,020/0 (M/M). (Endorsed by AENOR in May of 1993.)
Edition 1993-05-01

Soil quality - Determination of nitrate, nitrite and ammonium in field-moist soils by extraction with potassium chloride solution - Part 1: Manual method (ISO/TS 14256-1:2003)
Edition 2007-09-05

Iron and steel - ICP atomic emission spectrometric method - Part 1: Determination of various elements - Decomposition with acids and fusion with potassium disulfate
Edition 2014-02-20