For the professional

Meet Corentium Pro, a favorite of home inspectors and radon professionals. Fully AARST-NRPP certified for the North American market and beyond.


Corentium Pro samples indoor air through a passive diffusion chamber, using alpha spectrometry to precisely calculate the radon level. Radon is detected using silicon photodiodes to both count and measure the energy of alpha particles resulting from the decay chain of radon gas. The instrument is calibrated to reference instruments in accredited laboratories and is AARST-NRPP certified.

The standard deviation from the exact radon level is less than 7% + 5 Bq/m3 after 24 hours (US: 7% + 0.12 pCi/L) and less than 5% + 2 Bq/m3 after 7 days (US: 5% + 0.05 pCi/L)

Free mobile app

Generate a report from your smartphone on the spot, add notes and customization and send it as a PDF to multiple email addresses with Bluetooth smart connectivity.

The advantage of the Corentium Pro is that the app, software and firmware are updated regularly. We continually improve every aspect of our devices with the ultimate goal of delivering the best professional radon measurement tool on the market.


In order to comply with the current regulations in the United States and Canada, the Corentium Pro requires a yearly calibration. Airthings supplies recommendations on where to send your Corentium Pro for calibrations and in some cases, has group discounts available.

The yearly calibration usually takes less than a week to be completed, so you can quickly get back to work.



Android and iOS

PC Software

Windows compatible reporting software


3 AA batteries included with an estimated 1.5 year battery life


Becomes more accurate over time using auto-calibration

Short, long term

Take short- or long-term readings for 2 days, 7 days or up to a year


Store all your measurements for up to 5 years--that is over 900, 48-hour measurements!

Rental program

You asked, we listened. By popular demand, the Corentium Pro is now available in the US for rental. Take advantage of this affordable solution for as low as $99 a month.


  • $120 monthly, or $99 monthly with a minimum 6 months commitment.
  • $60 one-time administrative fee per client account regardless of the quantity of units rented.


  • Once the calibration date approaches expiry, your unit will be automatically replaced with a new unit at no extra cost. Airthings will contact you by email to arrange for shipping and delivery.

Contact form

To get started on the rental process, please fill out the online request form and we will be in contact with you shortly.