electrochemistry Bismuth modified carbon paste electrode for metal measurements In the experiments described in this blog post, we made a bismuth modified carbon paste electrode for detecting heavy metals, lead and zinc, using square wave anodic stripping voltammetry and the Rodeostat potentiostat.
electrochemistry Making a carbon paste electrode In this blog post we describe making a DIY carbon paste electrode using graphite powder/mineral oil mix and a custom-made reusable holder.
electrochemistry Square wave anodic stripping voltammetry and metal testing The Rodeostat python library has several electrochemistry programs currently implemented including cyclic voltammetry, constant voltage, linear sweep, chronoamperometry and more. We have recently added a square wave anodic stripping voltammetry (SWASV) program to
Hardware Electrophoresis power supply - LCD display We have recently updated the electrophoresis power supply to include an LCD display as shown in the images below. The price of the power supply kits remains the same ($65 for a kit)
electrochemistry Making a custom electrochemical cell In this blog post we describe making a simple custom electrode mount that we used in cyclic voltammetry experiments with the Rodeostat potentiostat. The electrodes we used were purchased from CH Instruments but the custom mount could be easily modified for use with other electrodes.
electrochemistry 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
electrochemistry Cyclic voltammetry with the Rodeostat In this blog post we carried out a cyclic voltammetry experiment with ruthenium hexamine Ru(NH3)6 a reversible redox couple.
Hardware Open source potentiostat features In this blog post we give a quick overview of some of the main differences between two open source potentiostats: Rodeostat and Cheapstat.
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 found that over 40% of the homes
Hardware Measuring emission spectra for the blue LED transilluminator Our blue LED transilluminators 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
electrochemistry Cyclic voltammetry testing with the Rodeostat 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.
Hardware IO Rodeo Open Source Potentiostat We have recently been working on a new potentiostat. The Rodeostat (initally referred to as a potentiostat shield) is an open source potentiostat for performing electrochemical measurements which is designed to work with
electrochemistry Potentiostat dummy cells One of our most frequently asked questions on the Forums and via email is how to produce a calibration for the Cheapstat potentiostat. The Cheapstat potentiostat returns measured current values as raw unitless
Online forum launched We have launched a new online forum: http://forum.iorodeo.com. Our aim in launching this Forum is that over time it will become a valuable resource for people interested in open source
Hardware Using an imaging enclosure for photographing gels Photographing gels is an important step in research projects that involve any kind of visual or quantitative DNA analysis by electrophoresis. Decent gel imaging requires a fairly simple set-up of a light-tight box