radon test for home sale 3
https://thecontinuousradonmonitorwire.northvaledigest.com/posts/why-continuous-radon-monitor-testing-matters-for-your-st.-louis-home-sale
When selling a home, a radon test is often required since radon gas can seep in from the soil and pose health risks. A short-term test kit, placed in the lowest lived-in level for a few days, measures levels; results above four picocuries per liter may need mitigation before closing. This test is usually done by a certified inspector and can be arranged quickly to keep the sale on track.