Adhesives 2 Auxiliary electrodes 2 Costs 2 Cyclic voltammetry 2 Fabrication 2 Graphite 2 Graphite electrodes 2 Low-costs 2 Multi channel 2 Multichannel graphite electrode 2 Nitrite 2 Polypropylenes 2 Printing techniques 2 Reference electrodes 2 Scanning electron microscopy 2 Stencil printing 2 Stencil-printing technique Transparent electrodes 2 Working electrode 2 multichannel graphite electrodes 2 nitrite 2 stencil-printing technique 2