Zeta potential analysis

Analysis determines zeta potential of the particle dispersed in a liquid medium. Zeta potential is the sum of the initial surface charge of the particle and the accumulated layer of ions. Zeta potential is used to describe the dispersion stability.

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Zeta potential, also known as electrokinetic potential, measures the “charge of a particle” in a liquid medium. Most often results are given in millivolts.

Zeta potential occurs when particles come in contact with a liquid. The functional groups on the particle surface will react with surrounding liquid, which results in a surface charge of the particle. This charge attracts the accumulation of oppositely charged ions and forms a so-called electronic double layer (DL, EDL). The zeta potential is the sum of the initial surface charge and the accumulated layer charge.

Zeta potential is used to describe the dispersion stability. Typically, low zeta potential indicates instability - aggregation, coagulation, or flocculation of the particles. Instead, high zeta potential indicates feasible stability.

However, several factors including pH, buffer concentration, temperature, and ionic strength influence the zetapotential.

Suitable sample matrices

  • Nanoparticles
  • Pharmaceuticals
  • Colloids
  • Polymers
  • Emulsions

Ideal uses of zeta potential analysis

  • Determine the zeta potential of the particles that are dispersed in a liquid medium.

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You can also email us at info@measurlabs.com or call us at +358 40 735 4843.

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Frequently asked questions

What is zeta potential analysis commonly used for?

Determine the zeta potential of the particles that are dispersed in a liquid medium

Analyse the stability of the particles in liquid medium.

What kind of samples can be analyzed with zeta potential analysis?

Samples can be in a wet or dry state, since samples are dissolved in liquid media prior to analysis.

What is Measurlabs?

Measurlabs offers a variety of laboratory analyses for product developers and quality managers. We perform some of the analyses in our own lab, but mostly we outsource them to carefully selected partner laboratories. This way we can send each sample to the lab that is best suited for the purpose, and offer high-quality analyses with more than a thousand different methods to our clients.

How does the service work?

When you contact us through our contact form or by email, one of our specialists will take ownership of your case and answer your query. You get an offer with all the necessary details about the analysis, and can send your samples to the indicated address. We will then take care of sending your samples to the correct laboratories and write a clear report on the results for you.

How do I send my samples?

Samples are usually delivered to our laboratory via courier. Contact us for further details before sending samples.

Zeta potential analysis is a fast method giving the net charge of a material in liquid medium. Measur works with leading zeta potential laboratories to provide reliable and accurate zeta potential analysis services to our customers.