Does the zeta potential value depend on solution's color?

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John Francis Miller

It may - it may not.

It depends on what is causing the color. For example, a partially water-soluble dye may preferentially adsorb onto a particle surface. If the dye is ionic then it will change the ionic composition of the particle surface and, hence, zeta potential.

John Reye

FYI, below is a link of some work that explains zeta potential and also included its use. For your reference:

Thesis ENHANCED ENZYMATIC HYDROLYSIS OF CELLULOSIC FIBERS BY CATION...