Measuring probe, measuring instrument and method for determining the physical stability of emulsions and dispersions

Measuring instrument for determining the physical stability of emulsions and dispersions, comprising:

• at least one measuring probe for determining the physical stability of emulsions and dispersions, said measuring probe including:
• a rod comprised of a material which is electrically nonconductive at least on the rod surface;
• and
• at least two conductivity-measurement electrodes separated from one another along the rod, each electrode being separately supplied with electricity via the interior of the rod at one end of the rod;
• a sample container adapted to hold the emulsion or dispersion to be examined, wherein the at least one measuring probe is arranged vertically in the sample container;
• and
• a supply that supplies the conductivity-measurement electrodes with AC voltage using a Wheatstone bridge layout to thereby measure the conductivity for the individual conductivity-measurement electrodes.