USA
The Advanced air cleaner (Part numbers 31497530, 31497531) have been certified by the California air resource board (CARB).
The product has been tested according to the following standards:
Electrostatic Air Cleaners [UL 867:2011 Ed.5+R:16Aug2021]
Electrostatic Air Cleaners [CSA C22.2#187:2020 Ed.5]
This product complies with the maximum allowable concentration of ozone of 0.050 parts per million by volume (ppmv) in a 24-h period.