A simple type of electrolysis apparatus, but demonstrates the principle as efficiently as other expensive apparatuses. Consists of a plastic container measuring 3" dia. x 2-1/2" H, total height 3-3/4", with mounted carbon electrodes. The bottom of the container has cutouts so that leads can be connected to the electrodes with ease. Supplied complete with two alligator clip leads (one red, one black), two graduated test tubes, and instruction manual. Works on 12 V DC.