Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Definitions; Trilingual version EN 12901:1999— 9 стр.
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— 30 стр.
