Measure Exactly. Anywhere.
Continuous Radon/Thoron Monitors for Air, Water & Soil
Learn about the RAD7
DURRIDGE Industry Leadership
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Over 5,000 RAD7s sold

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More than 2,500 published research papers utilizing RAD7

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Used on all 7 continents

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Shipped over 2,000 radon-in-water accessories

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Developed at MIT
Founded in 1997

Solutions to Common Questions
RAD7 Applications

Groundwater: Radon as a tracer,
thoron to identify discharge points

Radon Metrology and Measurement

Indoor Air Quality and Occupational Hygiene

Health Physics

Environmental Site Analysis

Volcano and Seismic Analysis

Particle Physics and Dark Matter Studies

Radon Testing and Mitigation

National Radon Safety Board Certified Radon Professionals
Download the Durridge presentation about radon measurement technologies
Have you ever wondered about how radon measurement technologies work? What are the advantages and disadvantages? Dr. Stephen Sadler, Chief Scientist at DURRIDGE, recently presented on this topic at the NORM IX conference. Download this presentation below.
Learn the differences in Pulse Ionization Chamber vs. Electrostatic Precipitation methods and when each is most appropriate.
Florida State University and Chulalongkorn University use RAD7s to research groundwater discharge in Thailand rivers.
Brush up on Radon as an Environmental Tracer. Read case study summaries on its use for groundwater/surface water interactions, vapor intrusion, and NAPL.
Download the presentation