This Brownlee Electrolysis Apparatus comes complete with platinum electrodes, glass test tubes, and screw terminals for simple hookup. The Brownlee Electrolysis Apparatus can be perched on top of a laboratory beaker. This device simply and effectively demonstrates electrolysis of water and the separation of Hydrogen and Oxygen. Requires 6-12 Volts DC for operation. Instructions included. We recommend the SS8415 variable power supply for use with this item.