Resumen de Simple and Inexpensive Microfluidic Thread Based Device for Teaching Microflow Injection Analysis and Electrochemistry

Deonir Agustini, Márcio F. Bergamini, Luiz Humberto Marcolino-Junior

• The miniaturization of flow injection analysis devices presents several improvements related to analytical procedures. However, a cost reduction and simplification are required to allow extensive use in undergraduate teaching laboratories. Here we present a low cost microfluidic electroanalytical device composed only of interlocking toy blocks, double sided tape, pencil leads, and hydrophilic cotton threads for performing microflow injection analysis (μFIA). With adequate analytical performance and a manufacturing cost of only $1.0/unit, the proposed device can be easily employed in undergraduate laboratories for teaching content related to μFIA and electrochemistry in a simple and inexpensive way.