ISO 2516:1973
The principle of the analysis consists in acidification of a test solution by addition of an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red- methylene blue mixed indicator.
OEN:
ISO
Langue:
English
Code(s) de l'ICS:
67.220.20;
71.060.50
Statut:
Annulée
Date de Publication:
1973-03-31
Numéro Standard:
ISO 2516:1973