Coronavirus Update


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 … Read More

Radon Measurement in Sub-Slab Soil Vapor Using the RAD7


We have posted a new Application Note document describing the standard operating procedures for using the DURRIDGE RAD7 electronic radon detector to collect radon measurements from below a building slab, for the purpose of investigating vapor intrusion.

NORM-IX Symposium Presentation


This week Durridge’s chief scientist Dr. Stephen Sadler will present a new paper at the Ninth International Symposium on Naturally Occurring Radioactive Material (NORM IX) in Denver, Colorado. This event is being organized by the Conference of Radiation Control Program Directors and the International Atomic Energy Agency (IAEA). It runs from September 23rd to the 26th.

Radonova and Durridge Partnership


Radonova Laboratories and Durridge have signed a reseller agreement where Radonova will make the Durridge RAD7 radon and thoron detector available to the European market. So far over 5,000 units of RAD7 have been sold in six continents and the instrument has become a standard in the global scientific community, including mentions in over 2,500 research papers.

CAPTURE 5.7.1 Now Available


Durridge’s CAPTURE software has been updated to version 5.7.1. This update brings a large number of improvements, including an enhanced Radon Inspection Report editor and a more robust system for merging RAD7 data and managing spectrum histogram content. Note that due to a change in our web server previous versions of CAPTURE will not provide notification that a new version of the software is available. This is a one-time occurrence.

Geotech Field Days Conference


DURRIDGE will be delivering a presentation on the RAD7 radon detector at the 11th annual Geotech Field Days conference in Denver on June 21st. Our event will include a special segment on vapor intrusion analysis from Geosyntec Consultants.

DURRIDGE at the MetroRADON IIG Meeting


As a member of the project’s Industry Interest Group, DURRIDGE will be in attendance at the MetroRADON IIG meeting at PTB in Braunschweig, Germany on 18 June 2019. MetroRADON is a pan-European project aiming to develop reliable techniques and methodologies to enable SI traceable radon activity concentration measurements.

Soil, Water, Energy, and Air Conference


Durridge will be in attendance at the Soil, Water, Energy, and Air conference, March 19-22 2019, in San Diego, California. For more information please see the official conference website at

New DURRIDGE Office Location


DURRIDGE has moved to a new office in Billerica, Massachusetts. Our phone and fax numbers have not changed.