Free standard shipping - Radon is an odorless, colorless, tasteless gas, known to cause lung cancer. -- This gas is produced by the natural breakdown of uranium and can be found in high concentrations in certain kinds of common rocks and soils. -- Outside and in well-ventilated areas radon poses no risk, but it has the potential to collect in the basements of homes built in areas of high concentration. -- This test kit provides an excellent introduction to radon and a practical safety test you can perform in your school. It consists of a charcoal sampling packet and a prepaid mailer. -- The packet is exposed, then resealed and mailed to the test lab for analysis. The lab will return the test results , together with background and interpretative information. --