A cyclic voltammetry or CV technique involves applying a voltage that controlled from external electronics circuitry to the electrodes of the electrochemical cell. The result obtained cyclic that called cyclic voltammogram. The cyclic voltammogram was told about oxidation, reduction and other contaminate such as Hydrogen gas and Oxygen gas that sometime can occurring. In addition, CV has the region that required for measurement of analyte (Potential window). The potential window depend on electrode and electrolyte, potential of GC, Pt, and Au with Ag/AgCl have –0.01 to +0.33 V, +0.1 to +0.3 V, and +0.25 to +0.6 V, respectively. When cyclic voltammogram was compared reference which similarly voltammogram due to the factor of cyclic voltammetry. The cyclic voltammetry factor are polishing electrode before experiment, purge inert gas and concentration of electrolyte.