Pro-Lab, Long-Term Radon Gas Test Kit GRA15-38 a little bit goes a

a little bit goes a long long way

everywhere

floors and many other interior surfaces

If you have a damp basement

Pro-Lab, Long-Term Radon Gas Test Kit GRA15-38 a little bit goes aDetects radon gas from 3 months to 1 year Pro Lab's Long Term Radon Test Kit for a 3 to 12 month time period provides a more accurate reading of radon gas since radon emissions tend to come at different times of the year. Use the short term Pro Lab Radon Gas Test Kit first; if radon is detected, then use this test to confirm. Simply place the black radon detector in an undisturbed area for 3 to 12 months. Once the long term test is complete, seal the