M00001579
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ISO 13099-1 1st Edition, June 15, 2012 Colloidal systems - Methods for zeta-potential determination - Part 1: Electroacoustic and electrokinetic phenomena
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 13099 describes methods of zeta-potential
determination, both electric and acoustic, in heterogeneous
systems, such as dispersions, emulsions, porous bodies with liquid
dispersion medium.
There is no restriction on the value of zeta-potential or the
mass fraction of the dispersed phase; both diluted and concentrated
systems are included. Particle size and pore size is assumed to be
on the micrometre scale or smaller, without restriction on particle
shape or pore geometry. The characterization of zeta-potential on
flat surfaces is discussed separately.
The liquid of the dispersion medium can be either aqueous or
non-aqueous with any liquid conductivity, electric permittivity or
chemical composition. The material of particles can be electrically
conducting or non-conducting. Double layers can be either isolated
or overlapped with any thickness or other properties.
This part of ISO 13099 is restricted to linear effects on
electric field strength phenomena. Surface charge is assumed to be
homogeneously spread along the interfaces. Effects associated with
the soft surface layers containing space distributed surface charge
are beyond the scope.