Quasense fabricate plastic based screen printed electrodes (SPE) as either single, double and triple electrode systems. The working electrodes can be produced from carbon and silver, electrochemical mediators or nanomaterials. The reference electrode is made with Ag/AgCl and Silver and the counter electrode is made of carbon and silver. The miniaturized electrode dimensions consent on small sample consumption while their low cost permit disposable use. The SPE is ideal for quality control, research and electrochemistry practice.