Methods for measuring protein concentration using the Open Colorimeter and 595nm LED.
Tutorials are project-based posts and step-by-step guides on ways to make or use open source tools in science investigations.
In this tutorial we use the Rodeostat potentiostat and a screen printed electrode to demonstrate current dependence on scan rate. We know that for freely-diffusible analytes like ascorbate, the anodic peak current depends linearly on the square root of the scan rate. This is described by the Randles-Sevcik equation. The
Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm
Colorimetric assay for measuring nitrite levels using API test kit. Range: 0-2ppm
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
Like many people, we have been alarmed at the reports of the lack of personal protective equipment (PPE) for healthcare workers on the frontlines of the COVID-19 pandemic. We have been following the work of many individuals and groups on social media making open source PPE as we try to