This International Standard 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.
CEN EN ISO 4045:2008 history
2008CEN EN ISO 4045:2008 Leather - Chemical tests - Determination of pH (ISO 4045:2008)
1998EN ISO 4045:1998 Leather - Determination of pH ISO 4045:1977