Microelectrophoresis can be used to determine the solid-liquid interfacial electrical properties (zeta potential) of dispersed system particles, as well as to measure the interfacial electrical properties of emulsion droplets. It can also be used to determine the isoelectric point and study the mechanism of interfacial reaction processes. Measuring the Zeta potential of particles to determine their isoelectric point is an important method for understanding the surface electrical properties of particles, and it is also an important means in particle surface treatment. Compared with other similar instruments at home and abroad, it has significant * performance. It can be widely used in industries such as cosmetics, mineral processing, papermaking, medical and health care, building materials, ultrafine materials, environmental protection, marine chemistry, etc. It is also one of the important teaching instruments for majors such as chemistry, chemical engineering, medicine, and building materials.