Resumen de Small-Scale and Low-Cost Electrodes for "Standard" Reduction Potential Measurements.

Per-Odd Eggen, Lise Kvittingen, Truls Gronneberg

• This article describes how to construct three simple and inexpensive electrodes: a hydrogen, a chlorine, and a copper electrode. The copper electrode is applied as a reference electrode for the reduction potential measurements and is calibrated against the "standard" hydrogen electrode. These small-scale (microchemistry) electrodes can be used in secondary school courses as well as a first-year course at college or university.