ISO 5397:1984
Leather; Determination of nitrogen content and "hide substance"; Titrimetric method

Standard No.

ISO 5397:1984

Release Date

1984

Published By

International Organization for Standardization (ISO)

Latest

ISO 5397:1984

Scope

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.

ISO 5397:1984 history

• 1984 ISO 5397:1984 Leather; Determination of nitrogen content and "hide substance"; Titrimetric method