Leaders in professional radon instrumentation and analysis solutions    


DURRIDGE is a leading provider of professional radon detection equipment. Since 1997 DURRIDGE has offered world-class radon detection solutions for business, universities, and governments worldwide. Our RAD7 continuous radon gas monitor features precise measurement far exceeding EPA accuracy standards.

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New Durridge UK Office
Durridge's UK operations have moved to a new facility at Sheffield's Technology Park. Our UK location provides sales and repair services to European customers. Contact us here.

CAPTURE Version 5.5.4 Now Available
Our CAPTURE software has been updated to version 5.5.4 for Windows and macOS. This update fixes several issues and is recommended for all users. CAPTURE 5.5.4 is intended to be the final version of CAPTURE to support Windows XP. Going forward, CAPTURE will continue to run on Windows 7 and later, plus macOS 10.7 and later. For the full list of changes, see the CAPTURE Version History page. Get CAPTURE here.

CAPTURE Version 5.5.3 Now Available
Durridge's free CAPTURE software for Windows and macOS lets you view and analyze radon data from a RAD7. The latest CAPTURE software update introduces several new features and improves graph navigation and program stability. For the full list of changes, see the CAPTURE Version History page. CAPTURE is available for Windows and macOS. Get CAPTURE here.

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RAD7 Radon Detector
Big Bottle System
Water Probe
Soil Gas Probes
Range Extender
Emission Chambers
CO2 Logger
Cool Trap
Duty Cycle Controller
Indoor Faucet Connector
Natural Rock Sample
Relay Box
Serial Bluetooth Adaptor
USB to Serial Adaptor
Water Switch
RAD7 Calibration
Thoron Calibration
RAD7 Repair
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