Electrochemical VOC Sensors

VOC-A4 and VOC-B4 Alphasense Electrochemical VOC Sensors

Targeting VOCs for improved air quality

Volatile Organic Compounds, commonly known as VOCs, are hazardous air pollutants that can have adverse effects on both human health and the environment. Understanding the significance of VOC monitoring, we have invested in extensive research and development to create specialised sensors that specifically target VOCs.

Meet the VOC-A4 and VOC-B4 Sensors

The VOC-A4 and VOC-B4 sensors are engineered to work alongside Alphasense’s existing range of sensors, forming a comprehensive suite for air quality analysis. These cutting-edge electrochemical sensors excel in detecting a variety of compounds, including Benzene, Formaldehyde, and Ethanol.

VOC-A4 Sensor Features:

  • Utilises Alphasense’s multiport Analogue Front-End boards (AFE) for flexible integration with other sensors.
  • Ensures precise and swift responses to VOCs, enabling real-time monitoring.
  • Low power consumption, promoting energy efficiency and sustainable operation.

VOC-B4 Sensor Features:

  • Can be used with Alphasense’s individual sensor boards (ISB) for seamless integration into bespoke circuits.
  • Provides accurate and reliable VOC detection to meet specific application requirements.
  • Boasts excellent response times and performance, ensuring consistent data collection.
  • Paving the way for improved air quality

At Alphasense, we are committed to promoting global air quality through cutting-edge sensor technologies. By offering low-cost, high-performance VOC-A4 and VOC-B4 sensors, we empower researchers, environmentalists, and industries to monitor and mitigate the impact of VOCs on public health and the environment.

Embrace the future of air quality monitoring

As the demand for efficient air quality monitoring grows, our VOC-A4 and VOC-B4 electrochemical sensors provide a transformative solution. Together with our existing range of sensors, they pave the way for a safer and healthier future.

Join us in our mission to improve global air quality. Embrace the potential of Alphasense VOC-A4 and VOC-B4 sensors and make a positive impact on the world around us.

Key features

  • Suitable for various environmental air quality applications
  • Adaptable voltage from 0V to 0.3V
  • Available in both A-Series (20mm diameter, 16.5mm depth) and B-Series (32mm diameter, 16.5mm depth)
  • Can be adapted to measure Benzene, Formaldehyde, Ethanol, Toluene and Xylene
  • Minimal battery drain and maintenance
  • Excellent detection/response time


VOC-A4 electrochemical sensor

  • 20mm diameter, 16.5mm depth
  • 4 electrodes
  • 230 to 410 nA/ppm in 2ppm CO
  • < 30 t90 (s) from zero to 2ppm CO
  • ± 200 nA in zero air at 20°C


VOC-B4 electrochemical sensor

  • 32mm diameter, 16.5mm depth
  • 4 electrodes
  • 400 to 700 nA/ppm in 2ppm CO
  • < 30 t90 (s) from zero to 2ppm CO
  • ± 200 nA in zero air at 20°C

VOC electrochemical sensor FAQs

Application Notes

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