Radon Testing

Radon is the second leading cause of lung cancer in the United States. The Environmental Protection Agency (EPA) and the Surgeon General strongly recommend that all homes be tested and that further action be taken when the home’s radon test results are 4.0pCi/l or greater. Radon is a colorless, odorless gas that occurs naturally. It can lead to major health problems if your property’s levels are too high. We offer quality testing services that will alert you to high concentrations of radon. The process involve placing a radon canister(s) in your home and/or crawl space for two to four days, collecting valuable data that will be used to determine your home’s radon levels.

Nearly one out of every 15 homes in the Untied States is estimated to have an elevated radon level (4.0 pCi/l or more). The national average indoor radon level is about 1.3 pCi/l. The higher the homes radon level the greater the health risk to you and your family.

Our testing procedure uses kits approved by the two National organizations approving radon test kits for use; the National Radon Proficiency Program (NRPP) and the National Radon Safety Board (NRSB). Once collected, the radon test kit is analyzed following the device protocol outlined in Section 2.5 of the EPA document 402-R- 92-004, Indoor Radon And Radon Decay Product Measurement Device Protocols. The kit uses Liquid Scintillation technology to analyze radon concentrations that have been adsorbed using activated carbon. In this process the activated carbon is removed from the test kit device and transferred to a 20mL scintillation vial. Next a volume of scintillation cocktail is added to the vial and mixed with the charcoal. The trapped radon gas diffuses into the scintillation cocktail and is counted by the Liquid Scintillation counter. The scintillation counter uses photomultiplier tubes to count the light emissions given off by the radioactive decay of the radon gas in each vial. The observed light pulses are then converted into a count per minute (CPM) where it is then multiplied by a calibration factor based on the amount of humidity noted from the chain of custody, and then converted into a radon activity concentration.

Results available within two days of sample pickup.


If you are looking for Radon Testing services in Charleston, call GLS Engineering at 843-881-4803, or fill out our online request form.

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