Photography - Processing chemicals - Specifications for potassium bromide
Edition 1994-10

Photography - Processing chemicals - Specifications for potassium ferricyanide
Edition 1994-11

Photography - Processing chemicals - Specifications for aluminium potassium sulfate
Edition 1994-12

Potassium hydroxide for industrial use; Sampling; Test sample; Preparation of the main solution for carrying out certain determinations
Edition 1973-04

Photography - Processing chemicals - Specifications for anhydrous potassium carbonate
Edition 1994-12

Water quality; determination of sodium and potassium; part 2: determination of potassium by atomic absorption spectrometry
Edition 1993-05

Water quality; determination of sodium and potassium; part 3: determination of sodium and potassium by flame emission spectrometry
Edition 1993-05

Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)
Edition 1993

Sodium and potassium silicates for industrial use; Samples and methods of test; General
Edition 1976-02

Water quality; determination of sodium and potassium; part 1: determination of sodium by atomic absorption spectrometry
Edition 1993-05