The Compton Research Group has broad and deep interests ranging from fundamental electrochemistry (theory of electron transfer and of mass transport phenomena; theory of porous electrodes; explanation of nano-toxicity) to making chemical sensors where we have invented, patented and licensed calibration free pH sensing, food sensors for the heat of chilli peppers and for the strength of garlic, electrochemical detectors for bacteria, sensors for hydrogen sulfide under the high temperature and pressure conditions at the bottom of oil wells and for biomarkers in saliva.