Kunak has proven to be among the best sensor-based air quality stations in international evaluations

As USEPA stated in its Air Sensor Evaluation Toolbox, “emerging air quality sensors – with general traits of being more compact, directly reading pollutants, and lower in cost than traditional methods – have a wide appeal to professional researchers, community groups, students, and citizen scientists alike. […] Since this technology is still under development, little information exists on the quality of data that these sensors produce.”

https://www.kunak.es/en/blog/comparative-assessment-aqspec-field-evaluation-reports/