ZetaReader

Measuring the Zeta Potential with the ZetaReader

The Zeta-Reader is a computer-based instrument with a high-resolution visual observation system that allows the operator to see the flocculation as it forms. Unlike “black box” instruments for measuring zeta potential, the ZetaReader lets you see what you are measuring. The size, shape, and tightness of the flocs can be observed as flocculation occurs. The Zeta-Reader offers the widest range of particle resolution available, from 20 nm to 500 μm. This allows the fine particles to be observed along with the agglomerations they form as they flocculate. The sample may be titrated in situ, allowing you to measure and view the effects of a change in pH or addition of a flocculating agent while simultaneously seeing the flocs form.

In operation, the Zeta-Reader draws an aliquot of suspension into the cell. A potential is applied across the cell and the movement of the particles is observed. A moving grid is superimposed on the display, the speed of which can be adjusted by simple controls on the computer. When the speed of the grid matches the speed of the moving particles, the zeta potential can be read directly from the screen.

Read more about Zeta Potential.

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