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The Center for Environmental Research and Technology Inc. is the leading educational resource for radon measurement, mitigation, and CE courses nationwide. CERTI was established in 1986 to fill the need for better, more convenient education for professionals, and has been in the forefront of radon education ever since. CERTI understands that all students learn differently. From our entry level courses to our continuing education courses, CERTI includes a variety of audio, visual, and live-taught course recordings to optimize the student experience and increase comprehension. Relevant content and industry-driven information is taught by Doug Kladder, lead instructor and founder of the Center for Environmental Research and Technology Inc. CERTI has also regularly collaborated with many industry experts to ensure the classes are effective and pertinent.