Nitrate-API colorimetric assay
Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
Joanne Long
Ammonia-API colorimetric assay
Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm
Nitrite-API colorimetric assay
Colorimetric assay for measuring nitrite levels using API test kit. Range: 0-2ppm
New Rodeostat MX design
New Rodeostat MX design & Open Colorimeter updates.
Open Hardware Month & Colorimeter Documentation
October is Open Hardware Month. Update on Open Colorimeter documentation.
Open Colorimeter CircuitPython Firmware
Update on the Open Colorimeter CircuitPython firmware
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