SurPASS 3 (Anton Paar)

The SurPASS 3 instrument is applicable for the zeta potential analysis of solids of almost any shape and size like fibers, foils, sheets, textiles, powders, or granules. The principle for the zeta potential analysis with the SurPASS 3 instrument is based on the streaming potential and streaming current method.  

In combination with the integrated titration unit, it is possible to investigate the dependence of the zeta potential on the pH fully automatically, thus determining the isoelectric point of a sample surface. It also facilitates a time-reliable recording of liquid-on-solid adsorption kinetics