The best way to organize your RAD7 data files and share with colleagues

Unlimited users & unlimited storage

Free 60-day trial

Measure Exactly. Anywhere.
Continuous Radon/Thoron Monitors for Air, Water & Soil
Learn about the RAD7

Coronavirus Update

Tuesday, September 15, 2020: On behalf of the entire team at Durridge, we hope this message finds you and your loved ones in good health. Our best intentions and well wishes go out to our customers, colleagues, and friends around the world, especially those who may be directly affected. Durridge continues to take all the necessary actions and precautions recommended by federal and state authorities. We remain in operation, providing customers with price quotations, technical support, order processing, and product shipments, although you may experience some delays under the circumstances. Calibration and maintenance services continue to be provided at our US and UK locations. We will post the most current updates here on our homepage, so please check back often.

DURRIDGE Industry Leadership
Worldwide icon

Over 5,000 RAD7s sold

Papers icon

More than 2,500 published research papers utilizing RAD7

Earth icon

Used on all 7 Continents

Faucet icon

Shipped over 2,000 radon-in-water accessories

Microchip icon

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.)