Published Articles

The Zeta Potential & its Use in Pharmaceutical Applications – Part 2: Measurement Techniques & Uses

An electric double-layer (EDL) exists between a surface and solution. Any relative motion between the rigid and mobile parts of the EDL will result in the generation of an electrokinetic potential. There are four fundamental ways (Figure 1) that electrokinetic potential can be produced: electrophoresis, electro- osmosis, streaming potential, and sedimentation potential.1 The parameter used to describe this real, measurable potential is the ZP, introduced in Part 1, in which the theoretical model for the EDL was discussed.

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