Last night we did our air exchange test. Some people believe that the apartment was getting too much fresh air, do to the fact that our radon levels were so low in the second round of testing.
We fill the apartment with CO2 with the aid of dry ice, use a fan to blow it off the floor and keep it mixed in the air. I for one do not understand why I had to do some thing that I do not do on a normal day, but if this is what they want this is what they get.
I set up my little D200, to take an image ever 15 minutes so we can have a record of the readings as well as kept it live on the net.
The test started at 6pm and the readings were at 4026 ppm
The test ended at 6:43 with readings at 1486 ppm
We also place a grid on the counter so we can mark all the readings from the meter
we had readings well over 500
The Safety Siren Pro Series II Radon Gas Detector is only showing 1