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Measure Exactly. Anywhere.
Continuous Radon/Thoron Monitors for Air, Water & Soil
Learn about the RAD7
DURRIDGE Industry Leadership
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Nearly 6,000 RAD7s sold

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4,000 scholarly publications featuring 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.
Download the Durridge presentation about radon measurement technologies
DURRIDGE’s chief scientist Dr. Stephen Sadler explains how radon can be used as a tracer for mapping non-aqueous phase liquid contamination, and introduces relevant DURRIDGE products. 2021 YouTube video (25 min.)