This article gives you an overview of the benefits of zeta potential analysis for various industrial applications. It can help characterize, modify, optimize, and monitor various surface properties.
Zeta potential analysis has become an important characterization method for solid surfaces. Why? Because getting information on the surface charge improves developmental research and quality control for various application fields, including for food preservation, textile production, biomaterial development as well as polymer, membrane, and coating characterization. Zeta potential values change with the pH. Determination of the isoelectric point (IEP), which represents the pH value where the surface charge is reversed and the zeta potential is 0 mV, gives you the opportunity to characterize your sample or modified surface in more detail.
To conduct zeta potential analysis on macroscopic solids, SurPASS 3 is the instrument of choice. It combines very high measurement sensitivity – helping it obtain reproducible zeta potential results in the range of a few mV – with a large variety of measurement cells adapted to a broad range of sample geometries. An integrated titration unit enables a fully automated pH scan. As an additional feature, the instrument is capable of recording liquid-on-solid surface adsorption and desorption kinetics.