Product Description This radon in water test kit meets all new EPA and state guidelines, and is the most accurate and reliable test kit available to check the level of radon in water in your home or office. Each test kit provides two (2) glass sample vials which allow you to conduct duplicate samplings in order to get the most accurate results. DISCLAIMER: Due to regulations, any tests performed in the state of Connecticut and NYC, samples MUST be shipped overnight to the laboratory for the test to be valid. From the Manufacturer This radon in water test kit meets all new EPA and state guidelines, and is the most accurate and reliable test kit available to check the level of radon in water in your home or office. Each test kit provides two (2) glass sample vials which allow you to conduct duplicate samplings in order to get the most accurate results.