Profile: Zeta-Meter, Inc. is a producer of commercial instruments to measure electrophoretic mobility (EM) and zeta potential (ZP). We provide zeta meter 3.0+ microprocessor instruments, which can be used with both aqueous and organic suspending liquids. These instruments are connected with electrodes placed in each end of the chamber, which creates an electric field across the chamber. Our instrument determines the specific conductance of sample, and helps select the appropriate voltage to apply.