This Ag/AgCl Electrode is made through a process that results in a fine grain, homogeneous mixture of Ag/AgCl compressed and sintered to strengthen and stabilize. Ag/AgCl Electrodes are known for their low offset voltage, low noise and stability. This electrode can be used indefinitely with minimal care. It is 1mm thick and encapsulated in an epoxy housing. It has a 1m (40") black PVC insulated leadwire, terminated with a 1.5mm DIN safety socket.