Certified workhorse

Meet Corentium Pro, a favorite of home inspectors and professionals. Fully C-NRPP certified for the Canadian market and beyond, this reliable monitor will prove a reliable workhorse for decades.

Corentium Pro

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  • Corentium Pro


Weighing just 320 grams (11.3 ounces), you’ll find this radon monitor a joy to work with. The data, captured using four highly accurate silicon photodiodes, is seamlessly transferred to your smartphone or PC.

  • C-NRPP certified for home inspections and radon professionals
  • Radon data by the hour.
  • Bluetooth Wireless connection
  • iOS and Android app
  • Equipped with sensors for temperature, humidity, atmospheric pressure, and tilt
  • Includes user-friendly and excel compatible software for analysis and reporting
  • Work/time exposure calculation shows what parts of the day levels are high
  • Stores up to 5 years of data at 1-hour resolution
  • Sockets for Tripod and Kensington Security cable.
  • Include suitcase, micro USB cable, CRA software, 3 AAA batteries.
  • 1.5 year battery life

Radon Sampling Method

Passive radon diffusion chamber

Radon Detection Method

Alpha spectrometry using digital detector technology

Radon Chambers

4 distinct chambers

Diffusion time constant

25 minutes


140 mm × 140 mm × 30mm


300 grams (incl. batteries)

Power Supply

3 AA alkaline battery
18 month battery life-time

Operation Environment
Relative Humidity

4 °C to + 40 °C
<85 %RH (non-condensing)

Measurement range

0 Bq/m³ - 100,000 Bq/m³

Measurement uncertainty
After 1 day
After 7 days

Std dev <7 % + 5 Bq/m³
Std dev <5% + 2 Bq/m³

Internal memory storage capacity 5 years at 1h time resolution
Temperature sensor

4 °C to +40 °C
0.336 °C
± 0.5 °C (typical)
±1 °C (max)
Humidity sensor

5 %RH to 95 %RH
0.5 %RH
± 4.5 % (in range 20-80 %RH)
Barometric pressure sensor

50.0 kPa to 115.0 kPa
0.06 kPa
± 1 kPa

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 C-NRPP certified.

The Corentium Report and Analyze (CRA) software, which comes with the Corentium Pro, allows the user to download all the data from the monitor and each sensor to a PC. The software functionalities are extensive, including the ability to generate custom graphics, custom professional reports, and convert all the data into a CSV file.

The iOS and Android applications provide responsive graphs that can be shown to a homeowner. Data is transferred from the Corentium Pro to your smartphone via Bluetooth.

The standard deviation from the exact radon level is less than

7% + 5 Bq/m3 after 24 hours

7% + 5 Bq/m3 after 24 hours

5% + 2 Bq/m3 after 7 days

Link to download the CRA Software: Download Software


Link to download the iOs App:


Link to download the Android app:

Question: Can I use this as a home inspector? Is it C-NRPP certified?

Answer: Yes, the Corentium Pro is fully C-NRPP certified and is able to perform 48-hour measurements. Many home inspectors across the world already use it for their official radon tests.

Question: How quickly can the Corentium device calculate accurate results? A home inspection lasts only a few hours, will it have to be left overnight?

Answer: To integrate daily variation of radon concentration, a short-term test should last a minimum 48 hours. However, we recommend measuring for at least 5 to 7 days if it’s possible, and preferably a few months. The longer you measure, the better the accuracy.

Question: How accurate is the device?

Answer: The standard deviation from the exact radon level is less than 7% after 24 hours, and less than 5% after 7 days. Accuracy can be improved further by measuring longer


It is recommended to re-calibrate the Corentium Pro each year.

The service turnaround time is 10 days

Calibration is done by C-NRPP and NRPP Certified Radon Reference Laboratory located in Saskatoon.

The Regular Service Fee is $175 per/monitor (single device) and $150/per monitor for 3 devices or more.
Twice a year, there is a Discounted Calibration Service at $125/per monitor: First business day of March and first business day of September.  Your unit(s) must be at the lab at these exact dates.  Regular service fee will apply to unit(s) delivered too late.


fill out this Calibration Requisition Form (PDF) and send it along with your device to the Laboratory.


1-800-263-5803 (option 4) or (306) 975-0566 ext. 225, Brian Bjorndal, Manager of RSIC National Laboratories
Ship CRM to: Radiation Safety Institute of Canada, 102 – 110 Research Drive, Saskatoon, SK Canada  S7N 3R3

You want your Corentium Pro now, but you would prefer to pay your purchase over the next months or year?

Not a problem!

We have the solution for you with the best rate and with all the flexibility you need.

You can have an annual interest rate as low as 5.99%, and your monthly payment can be as low as $80.00 per month.

Contact us

to request more information

The Corentium Pro is now available for rental.

The rental fee is $ 150.00 per month

The administration fee is: $ 75.00 plus shipping FedEx Express shipping round trip prepaid.

When the calibration date is near to expire, the monitor is replace by a new one for free.

Contact us

to request more information