This radon in water test kit is an EPA approved method for testing Radon in Water. It 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.Test from shower, bath dishwashing and clothes washingEach test kit provides two (2) glass sample vialsMeets all new EPA and State guidelinesDetects the invisible and odorless gas in your waterExpress service available for real estate transactions