[makeitdouble]

I have their previous air monitoring device (just displays a range of color from red -> orange -> yellow -> green), and regularly compare it to the air quality display of a Sharp air purifier in the same room.

It's no scientific measurement, but both devices seem to be mostly reacting the same. There's some time lag between the two, and the air flow seems to impact a lot of what they'll detect (the air purifier is more stable in that respect as it's the one creating the airflow), but the IKEA sensor doesn't seem to be too bad in that respect. At least I haven't seen the SHARP one go berserk while the IKEA sensor stays green, if that's what you would be fearing.

[mc32]

So most air quality monitors need to be "cleaned" and recalibrated by cycling them in a clean air enviro for a few mins, especially if they have been exposed to high levels of pollutants otherwise they may be "off" in their measurements.

Anyhow, it's worth giving them a try it seems.