Bibliography [edit source] Frieden, Thomas R
If youre just starting out or prefer a lighter smoke throughout the day, DKs Light is a solid introduction
But 400 products submitted for review since then are being kept off the market
Here are my choices for the best outdoor air quality monitors: Over $200 PurpleAir Zen (Flex) Pollution Sensors PM1, PM2.5, PM10, VOCs Price $299 Battery Life N/A Other Sensors Relative humidity, temperature Connectivity Web dashboard Connection Type USB Type-C If you want the best outdoor air quality monitor for under $300, PurpleAir is the best choice
Technology is advancing rapidly enough that most people will have the ability to charge small devices (via solar, wind, crank, or batteries) through a micro-USB cable as part of their emergency bags
Currently, there are no equivalent reference methods or air monitoring networks for indoor air