The principle consists in preparation of an aqueous extract from a test portion of the leather, and measurement of the pH of the extract, using a pH meter. The definition of a difference figure of an aqueous leather extract is given. Reagents, apparatus, procedure and the test report are specified.
WITHDRAWN
ISO 4045:1977
95.99
Withdrawal of Standard
Feb 7, 2008
WITHDRAWN
ISO 4045:2008