ISO 5397:1984 (R2021)
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ISO 5397:1984 (R2021)

Leather — Determination of nitrogen content and "hide substance" — Titrimetric method

Summary

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.

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 03/01/1984
Confirmation Date 06/05/2021
Edition 1
Page Count 3
EAN ---
ISBN ---
Weight (in grams) ---
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