This kit includes a single device, instructions, laboratory analysis, and a pre-addressed envelope. The device must be exposed for 91 days to 12 months under normal living conditions. Once your test period ends, you have to send back the dosimeter to the laboratory. (*Return postage to ship to lab not included).
The AT-100 Long Term Alpha Track Kit from AccuStar Labs was rated #1 by a leading national consumer advocacy group. According to the EPA and Health Canada, a long-term test is the best way to determine your exposure to Radon during different seasons and living conditions in your home. Closed house conditions are not necessary during a long term test.