Conductivity, also known as specific conductivity, refers to the amount of conductivity on a 1cm2 pole surface with a spacing of 1cm. In the electrophoretic coating process, the conductivity of the working solution, UF solution, polar solution, and pure water used is expressed by conductivity. The unit of conductivity is µ s/cm.

The conductivity of electrophoretic working fluid is related to factors such as the solid content, pH value, temperature, and impurity ion content of the working fluid. It is one of the important process parameters for electrophoretic coating and should generally be controlled within a certain range. The size of the range depends on the type of electrophoretic coating, and high or low conductivity of the working fluid is not good, which directly affects the quality of electrophoretic coating.