Colloid Metrix - Zeta Potential & Particle Charge - Stabino® II

The most important parameters for determining the stability of dispersions are the zeta potential and the particle charge density. Even small changes in these parameters, as they occur in the formulation and preparation of dispersions, can lead to destabilization. The selective determination of the zeta potential on diluted samples allows only vague statements about the influence of the individual process additives on the stability of the formulations. The Stabino® II measures either the zeta or flow potential (streaming current potential). Conductivity, pH value and temperature are determined simultaneously. In contrast to the commonly used measuring instruments, which are based on an optical measurement of the zeta potential,theStabino®II canalsocontinuouslymeasurethedispersionstabilityon concentrated (up to 40 % by volume) and sedimenting (from 0.3 nm to 300 μm) samples during a titration. This allows specific statements to be made about the influence of the individual additives on stability and saves time during formulation.