Low cost electrode as effective as an Electrode Commercial Glass or Saturated Calome

Abstract

The objective of this work was the design and evaluation of a low-cost electrode as an indicator electrode, using materials and reagents available in the laboratory. Comparisons were made of the results of acid base experiments, with glass electrodes, calomel electrode, and graphite electrodes manufactured, under the same conditions. The acid base titrations were carried out in different periods of time, in order to verify the stability of the manufactured electrode. To compare the results of both electrodes, the data obtained with each one was plotted. The results show that the graphite electrode has an acceptable performance compared to commercial glass or calomel electrodes, presenting titration curves with a similar behavior.