ISO 787-14:2019

General methods of test for pigments and extenders — Part 14: Determination of resistivity of aqueous extract ISO 787-14:2019

Publication date:   Feb 26, 2019

Scope

This document specifies a general method of test for determining the electric resistivity (specific electric resistance) or the specific electric conductivity, respectively, of the aqueous extract of a pigment. The method is applicable to all pigments and extenders, except pigments that are soluble in water.
The resistivity of the aqueous extract of a pigment is considered as a property independent of the amount of water-soluble matter. If agreed, a cold extraction method can be used.