Zeta Potential Analyzer

Nanoparticles carry an electric charge on their surface, thus forming an Electric Double Layer in the solution. Within the diffuse layer of the Electric Double Layer, there is an imaginary plane called the Slipping Plane, and the electric potential on this surface is defined as Zeta Potential. Ions from this plane to the surface of the nanoparticles will move along with the nanoparticles.

Zeta potential is influenced by the surface properties of nanoparticles, the pH value of the solution, the type of electrolyte, and the concentration of the electrolyte in the solution. It is an indicator for assessing the stability of colloidal solution systems.The measurement method uses a Zeta potential analyzer to measure the electrophoretic mobility of the particles being tested in the electrophoresis experiment through an applied electric field and Laser Doppler Velocimetry. Finally, the Zeta potential is obtained using Henry's Equation.