This Is A Simple And Economical Type Of Electrolysis Apparatus. Platinum Electrodes Are Attached To Insulated Connecting Rods Which Are Attached To Binding Posts Mounted On A Nonconducting Support. This is a simple and economical type of electrolysis apparatus. Platinum electrodes are attached to insulated connecting rods which are attached to binding posts mounted on a nonconducting support. The support rests across the top of a beaker and has two clips that each hold an inverted test tube. Available in two versions, with or without a beaker. The unit operates on a user-supplied 6V battery or 10V DC power supply.