Zeta Potential Analyzer

Wallis is also an innovative zeta potential analyzer dedicated to the characterization of nanoparticle suspensions. It utilizes Electrophoretic Light Scattering  (ELS)  to provide outstanding measurement resolution.
Zeta potential (ζ) is a fundamental property of colloidal suspensions intimately related to the number of electrical charges attached to the surface of the particles when immersed in a solvent. It is thus linked to particle-particle
interaction and formulation stability in a very complex way described by physical models like the Electrical Double Layer

The cell of Wallis allows the user to make measurements of zeta potential or particle size without restrictions, and minimize electro-osmosis due to the configuration of the cell.