ISO 13099-3:2014

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ISO 13099-2:2012 and ISO 13099-3:2014 are both parts of the International Standard ISO 13099, which deals with methods for determining zeta potential in colloidal systems. ISO 13099-2:2012 focuses on optical methods, specifically video microscopy and electrophoretic light scattering, for measuring electrophoretic mobility. ISO 13099-3:2014 describes acoustic methods, including colloid vibration current (CVI) and electric sonic amplitude (ESA), for measuring electrophoretic mobility of particles suspended in a liquid at high concentrations. Both standards use the measured electrophoretic mobility to estimate surface charge and determine zeta potential, relying on the theoretical models described in ISO 13099-