For proper execution of the consecutive measurements, it is necessary to exchange all the solutions before each experiments. This leads to high consumption of reagents (e.g. newly synthesized or expansive commercial ionophores), which are usually not available in large volumes. Therefore, in our research, we have attempted to miniaturize a standard electrochemical cell while reducing the need for reagents and maintaining all the advantages of a cell with a macroscopic interface. For this purpose, we used a spectrophotometric glass cuvette. We started researching a miniaturized setup with a 5  10 mm base cuvette but finally replaced it with a cuvette with a 2  10 mm base. As a vessel for the reference solution, we used the tip of a Pasteur pipette bent over a flame. The platinum electrode placed in the organic solution was covered with glass in the flame for insulation. Then, both platinum electrodes were fastened with a plastic clip to maintain the exact distance between the electrodes. About 400 µL of solutions, with just 150-200 µL of the organic phase, is needed to fill the miniaturized cell prepared in this way.