Resumen
The principle of the method consists in the titration of a test portion with a standard volumetric solution of hydrochloric acid or sodium hydroxide in the presence of phenolphthalein as indicator. - Replaces ISO Recommendation R 1615-1970.
The principle of the method consists in the titration of a test portion with a standard volumetric solution of hydrochloric acid or sodium hydroxide in the presence of phenolphthalein as indicator. - Replaces ISO Recommendation R 1615-1970.