Go Direct® Cyclic Voltammetry System (GDX-CVS)
Specifications and User Manual
Review the free experiments available

– Primary Test:
1. If using Instrumental Analysis software, connect the Go Direct Cyclic Voltammetry System to your Chromebook, computer, or mobile device. Then Launch Instrumental Analysis.
If using LabQuest 2 or LabQuest 3, connect the Go Direct Cyclic Voltammetry System to your LabQuest and select New from the File menu in the app.
2. Insert a screen-printed electrode (SPE) into the SPE connector on the Cyclic Voltammetry System.
3. Fill the scintillation vial about halfway full (~10 mL) with a 1.0 mM solution of acetaminophen in contact lens solution. Insert the scintillation vial into the clip on the stand. Carefully guide the Cyclic Voltammetry System with SPE attached downward into the vial and snap the instrument into place.
4. Fill a scintillation vial halfway full (~10 mL) of 1.0 mM acetaminophen in contact lens saline solution.
5. The default data collection parameters are appropriate for this experiment. If using Instrumental Analysis, click or tap Apply to dismiss the Voltammetry settings dialog box.
6. Click or tap Collect to begin data collection. It will stop automatically. You should see a duck-shaped voltammogram.

-Calibrate? No
The sensor is custom calibrated prior to shipping. The user cannot calibrate the system.

-You may want to clean the SPE prior to an experiment to activate the carbon surface. Instructions for how to do so are in the user manual.

Methods Cyclic Voltammetry
Bulk Electrolysis
Open-Circuit Potentiometry
Dimensions 9 cm length, 6 cm height, 3 cm depth
Current ranges
(4 total)
High: ±1000 μA
Medium: ±100 μA
Low: ±10 μA
Lowest: ±1 μA
Operational Potential Range –2000 mV to +2000 mV vs reference
Practical Potential Range
(Typical of using the Vernier screen-printed electrodes in aqueous solutions. Results may vary when using other electrodes and solvents.)
–1200 mV to +1200 mV vs reference

LabQuest support started with LabQuest 2.8.7 and 3.0.5, released Summer 2021

Does Vernier offer a sensor to test for lead in water?
Can I get a platinum electrode for the Cyclic Voltammetry System?
The SPE doesn't fit straight in my GDX-CVS.
Screen-Printed Electrodes (SPE) Troubleshooting and FAQs

Micro USB Cable (CB-USB-MICRO)
Go Direct® Cyclic Voltammetry System Screen-Printed Electrodes (CVS-SPE25)
Go Direct® Cyclic Voltammetry System Screen-Printed Electrodes (CVS-SPE100)

Go Direct® Constant Current System (GDX-CCS)
Go Direct® ORP Sensor (GDX-ORP)