How can be explained the difference between zeta potential results obtained in diffetent types of cuvettes (folded capilary cell and dip cell)?

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John Francis Miller

This could be due to electrode polarization. What is the ionic strength of your sample?

Alan F Rawle

Mykhailo Shek

Have you confirmed the system by use of an appropriate (transfer) standard?

Ulf Nobbmann

Hello Mykhailo Shek , the result should be very close to the same. It might help if you can share a data file here, or to send a data file to the manufacturer. The same sample in the two different cuvette types. Or also, as Alan indicated, data from a (transfer) standard.

https://www.materials-talks.com/blog/2014/08/19/faq-how-can-i-submit-a-data-file-to-the-help-desk/