BS EN ISO 4045:2018现行
Leather. Chemical tests. Determination of pH and difference figure
出版：British Standards Institution
专家解读视频
This document specifies a method for determining the pH value and the difference figure of an aqueous leather extract. It is applicable to all types of leather.
EN ISO 4045 : 2008 - Identical
ISO 4045:2018 - Identical
EN ISO 4045:2018 - Identical
EN ISO 4045:2018 - Identical
EN ISO 4045 : 2008 - Identical
ISO 4045:2018 - Identical
