Résumé
Two methods of titration depending on whether the end point is detected visually or electrometrically are specified. The visual method is only applicable to colourless solutions but can be used when no electrometric apparatus is available. The electrometric method, whether by direct titration or back-titration, is the more accurate one and for this reason recommended. The principle of the test consists in reaction of any water present in a test portion with a solution of iodine and sulphur dioxide in a pyridine/methanol mixture (Karl Fischer reagent), previously standardized by titration with an exactly known mass of water.
Informations générales
-
État actuel: PubliéeDate de publication: 1978-12Stade: Norme internationale confirmée [90.93]
-
Edition: 1Nombre de pages: 12
-
Comité technique :ISO/TC 47ICS :71.040.40
- RSS mises à jour
Prévisualiser
Prévisualiser cette norme sur notre Plateforme de consultation en ligne (OBP)
Cycle de vie
Vous avez une question?
Consulter notre FAQ
Service à la clientèle
+41 22 749 08 88
Horaires d’ouverture:
De lundi à vendredi - 09:00-12:00, 14:00-17:00 (UTC+1)