Andrzej Lewenstam received a Ph.D. (1977) and D.Sc. (1987) from the University of Warsaw, Poland. Since 1990, he has been a Professor of Sensor Technology at Abo Akademi University, Turku, Finland, and the Director of the Center for Process Analytical Chemistry and Sensor Technology ‘ProSens’ at this university. Concurrently, he is a Professor in Chemistry at AGH University of Science and Technology, Cracow, Poland. He is also an Affiliate Professor in Chemistry, University of Warsaw, Poland, and an Adjunct Professor in Electroanalytical Chemistry at Aalto University, Helsinki, Finland. He is the R&D Manager and Head of Sensors Development at KONE Instruments, Finland, and was a Senior Scientific Adviser at Thermo Fisher Scientific, USA (1984–2016). He was the Chairman of the Working Group on Selective Electrodes and Biosensors of the International Federation of Clinical Chemistry (IFCC), 2006–2010, and a long-term expert of the IFCC. His major fields of interest include chemical and biosensors, clinical and analytical chemistry, electrochemistry, and mathematical modeling. His separate activity concerns the methodology of chemistry and philosophy of science. He is the author of approximately 250 peer-reviewed papers in chemistry (h-index=53), 30 articles in the philosophy of science, and 25 patents; he is also the co-editor of several books and an editor and a member of the editorial board for several international journals.