Does an inspector have to be certified in Radon testing to just simply use a hand held gas detector, to see if there is any trace levels, for suggesting that a full Radon test be performed?
To the best of my knowledge, there is NO authority (that governs Radon testing) that approves of any device or method to do as you asked.
It depends where you are located. Fill out your profile to get better responses.
- 1 and there is a reason for that