4" Charcoal and Diffusion Barrier Radon In Air Test Kit Instructions

Before You Begin Your Short-Term Radon Test Kit

charcoal radon test kit

1. Go to accustarlabs.com/can4 to register device and fill out online data form (or scan QR code on your printed instruction) 
2. Ensure that testing guidelines are followed
3. DO NOT open test device until you are ready to start your test
4. Record your device number(s) and Keep for your records

Start the test before the expiration date on the device. The test duration is 2-4 days or 3-7 days for the DB canister. Unusual weather conditions affect test results. Do not perform the test during sustained high winds, heavy rain or extreme indoor conditions of heat, cold or humidity. Short term tests should not be placed in areas of high humidity.

Failure to follow the testing instructions or protocols may result in an invalid test. These instructions cannot anticipate or address every condition that arises when performing a radon test. Some states have regulations regarding radon testing. If you have questions about your state’s requirements please contact your State Radon Office.

Choose a Test Location radon test kit location

  • Perform the test in the lowest livable area of the house. The location must be at least 3 feet from any door or window, 12 inches from exterior wall, 2-5 feet from the floor or ceiling, and 4 inches from other objects.
  • If you are testing for a real estate transaction, place 2 devices side by side, 4 inches apart.

    Where to NOT Test:
    Kitchens, bathrooms, laundry rooms, closets, crawlspaces, or any area with humidity over 80%. Don’t place the device on stone surfaces or directly under blowing air.

Start the Radon Test

Returning Your Device(s) to the Lab

Complete the Data Form online and return the closed device to AccuStar right away. The lab must receive your device before the expiration date and no more than 30 days after the end of the test. For your convenience, the test kit includes a return USPS Mailer. If guaranteed delivery is needed, we recommend that you return your test device(s) via UPS or FedEx. AccuStar is not responsible for any mail delays resulting in invalid results, nor any costs associated with upgraded shipping methods. No deliveries are accepted on weekends or holidays.

Visit accustarlabs.com/can4 to access information about your radon test. You must have your device number(s) and zip code of the property tested. Please contact us to request printed reports. Reports are issued Monday through Friday to the email address that was provided on the Data Form.

Amended Reports
If your test report is incomplete due to errors or missing information, you must send the required information to AccuStar in writing, by mail, email, or on our website.