Résumé
The method consists in preparing of a test solution as specified in ISO 5317, precipitating of potassium ions by sodium tetraphenylborate in a weakly alkaline medium in the presence of disodium ethylenediaminetetraacetate dihydrate (EDTA, disodium salt) and formaldehyde, followed by filtrating of the precipitate, drying and weighing.
Informations générales
-
État actuel: AnnuléeDate de publication: 1983-12Stade: Annulation de la Norme internationale [95.99]
-
Edition: 1Nombre de pages: 3
-
Comité technique :ISO/TC 134ICS :65.080
- RSS mises à jour