ISO 5397:1984
The principle consists in decomposition of a test portion by Kjeldahl method, distillation of the ammonia liberated, determination of the nitrogen content by titration of the ammonia with sulfuric or hydrochloric acid, using phenolphthalein as indicator. The method is applicable to all types of leather in all types of tannage.
SDO:
ISO
Language:
English
ICS Codes:
59.140.30
Status:
Published
Publish date:
1984-02-29
Standard Number:
ISO 5397:1984