Supervisor: Davide Gardini

The zeta potential probe supplied to CNR-ISTEC is able to measure the zeta potential of particles dispersed in concentrated water-based dispersions (0.1-50 vol% depending on the sample) by an electroacoustic technique.

Main characterizations

  • Zeta potential dependence on pH (isoelectric point determination).
  • Zeta potential dependence on the concentration of an additive (determination of the optimal concentration).

Principle of operation

The acoustic wave generated by the zeta probe immersed in the sample produces a measurable electrical signal (colloild vibration current, CVI) that is collected by the probe itself. This signal is converted into electrophoretic mobility and from this is obtained the zeta potential according to Smoluchowski model.

Dispersion Technology DT-310

  • Concentration range: 0.1-50 vol%.
  • pH probe.
  • Automatic titration system.
DT-310 – Zeta potential probe with titration system