Newsletter New tools for creating a custom calibration for the Open Colorimeter New documentation for creating custom calibrations for the Open Colorimeter.
Newsletter New video tutorials & user guides for the Open Colorimeter New instructional videos and user guides for the Open Colorimeter. Link to subscribe to our YouTube channel.
Newsletter New tutorials for customizing the Open Colorimeter Highlighting new tutorials for customizing the Open Colorimeter
Newsletter Ammonia, nitrate and nitrite Open Colorimeter assays for water quality testing Testing three water quality tests for the Open Colorimeter. These assays are ammonia, nitrate and nitrite.
Tutorials Nitrate-API colorimetric assay Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
Tutorials Ammonia-API colorimetric assay Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm
Tutorials Nitrite-API colorimetric assay Colorimetric assay for measuring nitrite levels using API test kit. Range: 0-2ppm
Newsletter Open Hardware Month & Colorimeter Documentation October is Open Hardware Month. Update on Open Colorimeter documentation.
Newsletter Open Colorimeter CircuitPython Firmware Update on the Open Colorimeter CircuitPython firmware
Tutorials 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 the
Newsletter Open Colorimeter hardware and testing Open Colorimeter with Beer's Law experiments & measuring food dyes in drinks
Newsletter Characterizing LEDs and sample absorbance spectra with a USB spectrometer Characterizing LEDs and sample absorbance spectra with a USB spectrometer
Newsletter Open Colorimeter hardware design update Design of a new 3D-printed enclosure for the Open Colorimeter using FreeCAD
Newsletter Testing 3D printed cuvette holders Forum update, 3D printed cuvette holders and data from the environmental gas sensor project
Newsletter Introducing the Open Colorimeter project Updates on the new Open Hardware Colorimeter project including PyBadge firmware
Open Colorimeter New colorimeter open hardware design expands flexibility Our open hardware colorimeter is a popular tool for measurements analytes using colorimetric assays. We initially designed the colorimeter as an educational kit in 2012 with Kickstarter funding.
Tutorials Testing a lead colorimetric assay In this blog post we describe our initial testing of a colorimetric kit for measuring lead in drinking water. In 2015, a Virginia Tech research team [http://flintwaterstudy.org/about-page/about-us/] found that over 40% of the homes in Flint, MI had elevated lead water levels with 25% of homes
