Nitrate-API colorimetric assay Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
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
Open Hardware Month & Colorimeter Documentation October is Open Hardware Month. Update on Open Colorimeter documentation.
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