Leaders in professional radon instrumentation and analysis solutions

DURRIDGE is a leading provider of professional radon detection equipment. Since 1997 DURRIDGE have 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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RAD7 Video Tutorials
This summer Durridge is producing a series of new RAD7 tutorial videos. Our latest release is a "Getting Started" tutorial explaining how to conduct a 1-day radon test with the RAD7. Watch the videos here.

Announcing CAPTURE 5.3
CAPTURE 5.3 introduces several exciting new features to Durridge's RAD7 communications software for Windows and Mac OS X. With this latest CAPTURE update, it is now possible to control not only the RAD7 radon monitor, but also the new DRYSTIK ADS-3 moisture exchanger. Learn more about CAPTURE here.

Introducing the new DRYSTIKs
Durridge is pleased to announce a new line of DRYSTIK moisture exchangers. These devices remove moisture from the air entering the RAD7 and utilize programmable profiles which are editable using CAPTURE software via a USB interface. The ADS-3 DRYSTIK uses the same compact case as its predecessor, while the ruggedized ADS-3R utilizes a heavy duty Pelican case, ideal for demanding field work. Learn more about the DRYSTIK here.

RAD7 User's Manual
RAD7 customers are encouraged to download the latest RAD7 user's manual, which contains helpful setup diagrams and troubleshooting tips. It is available in PDF format from the Support section. The manual is offered in English and Spanish language editions.

CAPTURE Software Update
CAPTURE version 5.2.9 resolves several communication bugs and lays the groundwork for future updates which will ensure that our software retains compatibility with Windows and Mac OS X for years to come. This update is recommended for all RAD7 users. Learn more about CAPTURE here.

CAPTURE Software Update
Our radon data analysis software has been updated to version 5.2.7. This release addresses bugs related to combining RAD7 data files and saving data files to disk. It also introduces a faster RAD7 detection system. This update is strongly recommended for all CAPTURE users. CAPTURE is available for Windows and Mac OS X. Try it on Windows 8, it works great! Learn more about CAPTURE here.

Natural Rock Sample Technical Note
The Durridge Natural Rock Sample makes it possible to monitor the RAD7's performance up to once each month. With it you can make a precise check of the RAD7 sensitivity to both radon and thoron. We have released a technical document describing this process. It can be found in PDF format at the Natural Rock Sample page.

In addition, our CAPTURE software has been updated to version 5.2.6. This release fixes minor issues. Learn more about CAPTURE here.

CAPTURE Software Update
CAPTURE has been updated to version 5.2.5. This is a minor release that fixes several bugs, including one that made it difficult to combine certain types of RAD7 data files. This update is recommended for all CAPTURE users. Learn more about CAPTURE here.

CAPTURE Software Update
Download and graph RAD7 data with CAPTURE version 5.2.4. This latest update to DURRIDGE's RAD7 communication software improves the accuracy of Big Bottle RAD H2O calculations, and introduces support for RADLINK version 300 and cumulative spectrum data. Learn more about CAPTURE here.

RAD H2O Design Update
The RAD H2O system for measuring radon in water samples has been revised with a new aerator assembly, allowing for trouble-free analysis of 40 and 250 ml water samples. Our updated documentation includes new photos and illustrations to aid with setup. Learn more about the RAD H2O here.

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