General methods of test for pigments and extenders - Part 14: Determination of resistivity of aqueous extract
STANDARD published on 1.10.2019
Designation standards: ČSN EN ISO 787-14
Classification mark: 670520
Catalog number: 507897
Publication date standards: 1.10.2019
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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