electrochemistry - IO Rodeo Blog

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. This is a continuation of our experiments using electrochemistry to measure lead and other heavy metal pollutants

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 the library. Stripping voltammetry is a powerful electroanalytical technique for the detection of trace metals in the

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 to an electrochemical signal. Each glucose test strip contains the enzyme glucose oxidase (GOx) and an electron

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.

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 the teensy 3.2 development board. The Rodeostat is easily programmed with the popular Arduino IDE (Teensyduino)

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 integers read from the ADC (analog to digital converter) at the output of the transimpedance amplifier (current