Review on 🌬️ Air Steward Advanced Portable Particle Purifier: Experience Clean Air On-The-Go by Charles Collier

The quality of the instrument is excellent, especially its design and simplicity. After almost two weeks of using the device, the CO2 and PM data are consistent depending on how often I open the windows. Daily CO2 monitoring has shocked me a bit at how dramatic the changes can be on the days we've had wildfires here in Colorado as I open or close the windows. In terms of value for money, it is very profitable.