We offer single channel and 4-channel systems for free radical analysis. These systems work with WPI's line of biosensors and your data acquisition system.

Free Radical Detection Systems

Free Radical Detection Systems


Free Radical Sensors

Free Radical Sensors

Carbon Monoxide Sensors
Glucose Sensors
Hydrogen Peroxide Sensors
Hydrogen Sulfide Sensors
Nitric Oxide Sensors
Oxygen Sensors
pH Sensors
Temperature Sensor



Biosensing Accessories

Carbon Fiber Electrodes
Ion Selective Electrodes
Reference Electrodes
Biosensing Accessories

Free Radical Detection and Measurement of Biologically Significant Ions and Compounds - Specializing in Nitric Oxide

WPI has a long history of innovation in the area of ion-specific detection and recording. We have developed biosensors and provided quality tools and instrumentation to life scientists for nearly 50 years.

In 1989 we marketed the first commercial sensor for nitric oxide and have been at the front of the field ever since. WPI maintains strong ties and collaborations with University of Alabama, University of South Florida, Harvard University, MIT, University of California Los Angeles, University College London, University of Cambridge and other institutions around the world.

WPI also has its own fully equipped research and development laboratory staffed by scientists who continually design, develop and produce sensors relevant to the changing requirements of research. We have been the recipients of many federal grants to expand our technology in this area, as well.

Today WPI carries a full range of products that focus on the detection and measurement of biologically significant ions and compounds. Our line encompasses more than 600 products including: electrodes, sensors, calibration solutions, cables, amplifiers and recording electronics. We have everything you need.

Real time detection and measurement of a variety of redox-reactive species is fast and reliable using the electrochemical (amperometric) detection principle employed by WPI's TBR system. This low noise system works with a variety of sensors for detecting nitric oxide (NO), oxygen (O2), hydrogen peroxide (H2O2), Hydrogen sulfide (H2S) and glucose.

If you have any questions about our biosensing systems or sensors, please give us a call at (866) 606-1974 (Toll Free in the USA) or email us at