Pro-Lab, Long-Term Radon Gas Test Kit 97124 almost black

almost black

without streaking

That's sustainable

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Pro-Lab, Long-Term Radon Gas Test Kit 97124 almost blackDetects 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