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DIN EN ISO 14911:1999
Water quality - Determination of dissolved Li<(hoch)+>, Na<(hoch)+>, NH<(Index)4><(hoch)+>, K<(hoch)+>, Mn<(hoch)2+>, Ca<(hoch)2+>, Mg<(hoch)2+>, Sr<(hoch)2+> and Ba<(hoch)2+> using ion chromatography - Method for water and waste water (ISO 14911:1998); German version EN ISO 14911:1999
The document describes a chemical-physical method for the determination of 9 cations in water by ion chromatography. The ions are to separate in a separation column by liquid chromatography and then to measure with a conductivity detector.
Deutsches Institut für Normung [din]