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