Zeta potential determination

Article number:

What is determined with this method?

  • Zeta (z) potential, i.e. particle charge at a defined pH based on electrophoretic mobility
  • Determination of isoelectric point by pH titration

Measuring range:

  • Particle size: 5 nm – 10 µm
  • Opaque or unstable dispersions are not suitable

What is evaluated with this method?

  • Stability of a dispersion: The greater the magnitude of the zeta potential, the greater the electrostatic repulsion between the particles in a dispersion and the lower their tendency to form agglomerates.

Examples of application of the method by material:

  • Characterisation of pigments and organic polymers
  • Evaluation of the stability of dispersions
  • Optimisation of the formulation of a dispersion
  • eEtimation of interaction with other charged components

What insights do customers gain about your products/samples with this method?

  • Influence of pH value, salt concentration and use of additives on the stability of a dispersion

In which company or process area are these methods applied?

  • Process: quality management
  • Company: product development, research

Which problems can this method solve / recognise at the customer?

  • Optimisation of the stability of dispersions

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