The AQ-SPEC field evaluation protocol for air quality sensors tests devices in real-world conditions against reference equipment. It focuses on measuring criteria pollutants such as CO, NO2, O3, PM, and others. The protocol evaluates the accuracy, reliability, and data quality of sensors in various environments. Results help determine the suitability of these sensors for ambient air monitoring.
The Kunak Air Lite was evaluated against federal reference methods for ozone (O3) and nitrogen dioxide (NO2) measurements. The sensors showed strong correlations with reference instruments, with some underestimation of O3 and overestimation of NO2. Data recovery was high, averaging around 99%, and intra-model variability was low. While the sensors performed well in tracking diurnal variations, the evaluation highlighted the need for calibration adjustments. The units showed potential for cost-effective air quality monitoring in ambient settings. For more details, check the full report.
