Measuring blue food dye in sports drinks Goal: Use the Open Colorimeter to experimentally calculate the molar extinction coefficient of FD&C Blue #1 Beer’s Law states that absorbance of a sample (Abs) depends on the molar concentration (c), light path length in centimeters (l), and molar extinction coefficient (ε) for the dissolved substance at
Open Colorimeter hardware and testing Open Colorimeter with Beer's Law experiments & measuring food dyes in drinks
Characterizing LEDs and sample absorbance spectra with a USB spectrometer Characterizing LEDs and sample absorbance spectra with a USB spectrometer
Open Colorimeter hardware design update Design of a new 3D-printed enclosure for the Open Colorimeter using FreeCAD
Rodeostat in peer-reviewed publications Highlighting ways the Rodeostat open source potentiostat has been used in science research and education