Snuffle.org

Air pollution is very difficult to measure. Apart from the expensive, professional equipment, more and more inexpensive alternatives become available. Because of the many scattered initiatives, information about the usefulness of these low-cost sensors is difficult to find. This wiki intends to bring together all the available information about sensors (i.e. the components sensitive to air pollution) and sensor boxes (i.e. practical devices containing sensors).

Here you will find information on manufacturers, the current state of technology, sensor specs, sensor issues, and evaluation reports. This is a public knowledge base to which everybody can contribute. If you have information which you would like to share, please register yourself and contribute to this wiki!

Gases

• O3 (Ozone)
• NO2 (Nitrogen Dioxide), NO (Nitric Oxide), NOx (Nitrogen Oxides)
• SO2 (Sulphur Dioxide)
• CO (Carbon Monoxide)
• CO2 (Carbon Dioxide)
• H2S (Hydrogen Sulfide)
• NH3 (Ammonia)
• VOC (Volatile Organic Compounds)

Particulate matter / Aerosols

• PM10 and PM2.5 (Particulate Matter with a diameter of 10 μm, 2.5 μm or less)
• Ultrafine Particles (i.e. UFPs or PM0.1) (Particulate Matter with a diameter of 0.1 μm or less)
• Particle Number Concentration (Particle Counters)
• BC (Black Carbon)
• AOT (Aerosol Optical Thickness)

Sensor manufacturers

Connectivity

Measurement Campaigns and City Networks

Useful links

Snuffle.org is an initiative of KNMI as part of the EDUCEO project funded by ESA. For questions and comments contact the admin