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Tutorials

Tutorials are project-based posts and step-by-step guides on ways to make or use open source tools in science investigations.

Chronoamperometry with glucose test strips

Chronoamperometry with glucose test strips

In this electrochemistry experiment we used the Rodeostat potentiostat to measure glucose in liquids using commonly available glucose test strips. Glucose test strips are a type of biosensor - they convert biochemical reactions to an electrochemical signal. Each glucose test strip contains the enzyme glucose oxidase (GOx) and an electron

Reversible Cyclic Voltammetry

Reversible Cyclic Voltammetry

In this blog post we carried out a cyclic voltammetry experiment with ruthenium hexamine Ru(NH3)6 a reversible redox couple.

Testing a lead colorimetric assay

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

Measuring emission spectra for the blue LED transilluminator

Measuring emission spectra for the blue LED transilluminator

Our blue LED transilluminators [https://iorodeo.com/collections/gel-imaging] use a 470 nm LED array in combination with blue and amber acrylic filters for viewing DNA bands in agarose gels stained with DNA dyes. Images of gels stained with Greenview, GelGreen and others can be seen in previous posts on

Irreversible Cyclic Voltammetry

Irreversible Cyclic Voltammetry

In this blog post we provide data from our testing of the new Rodeostat. We performed a side-by-side comparison between the Rodeostat and the Cheapstat potentiostat using ascorbate cyclic voltammetry experiments.