We often receive emails or phone calls from CERTI students who are challenged by clients when they are asked to maintain closed house conditions when a short-term radon test is performed. After all,
Everyone in the radon biz has seen countless pictures and illustrations of U-tubes mounted on the side of the vent pipe on the suction side of the fan -- and why not? It
At CERTI, we are frequently called on for advice by students. More and more, we have been receiving calls from measurement professionals who have been asked to do a radon survey in a
