CERTI, The Center for Environmental Research Technology Inc., is the leading provider of Radon Measurement and Mitigation Entry Level and Continuing Education courses. Serving Radon professionals, home inspectors, the real estate industry, environmental experts, state IAQ representatives, and more, CERTI offers the most comprehensive collection of exceptional online courses that are taken at your own pace. CERTI courses are unique in that we combine many different modes of instruction - audio, visual, graphs, charts, videos, interviews with Radon experts, tools and materials to use beyond the classroom, and so much more. CERTI's goal is to support you wholly throughout your educational experience and beyond.