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RIDGEWELL RADON Short-Term Kit Device A, side by side RIDGEWELL RADON Short-Term Kit Device B, side by side Illustration
HOW TO TEST POSTAGE PAID PREPAID RETURN Tracked, to the laboratory RIDGEWELL RADON GM-ST-0001 Illustration: kit contents Window closed RIDGEWELL RADON GM-ST-0001 20 in or more Lowest level you live in Away from drafts, kitchens, bathrooms, and exterior wallsIllustration: placement Radon test report Short-Term · 2 to 4 days · Laboratory result 3.1pCi/L 024 DOWNLOAD PDFIllustration: sample report

Real Estate Pair

Two short-term kits run side by side, 4 inches apart, for a transaction. Reported together with the duplicate agreement.

$64Lab fee and return mailer included

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About 11 to 20 days from order to report with standard shipping.

In the box

  • 2 Ridgewell Short-Term Radon Test Kits logged as a pair
  • Two prepaid return mailers
  • Tamper-evident seals, numbered and logged
  • One paired report with both results, the average, and the duplicate agreement

Best for

  • Buyers and sellers working to a closing date
  • Inspectors who do not deploy a continuous monitor
  • Anyone who needs a second device on the record
Buying or selling? Some states require a licensed tester for a transaction. Check your state and date before you order.

Specifications

Test typeShort-term, activated charcoal adsorption
Test length48 to 96 hours
MeasuresRadon in air, reported in pCi/L with the laboratory’s uncertainty and detection limit
ReportOnline in My Tests, usually within 2 business days of the lab logging the sample in. PDF download. Share links.
LaboratoryIndependent analytical laboratory
Sample returnPrepaid, tracked mailer. The lab accepts a device up to 10 days after the stop time.
Use by12 months from shipment, printed on the box. We don’t analyze expired devices; we replace them.
ShippingStandard 3 to 5 business days, $5.95; free over $75. Expedited 2 business days, $14.95.

About this kit

The EPA's home buyer's and seller's guide describes two short-term tests run at the same time in the same location as one accepted option for a transaction. The two devices are logged as a pair; the report shows both results and their average.

Timeline

  1. Delivery, standard3 days to 6 daysKits leave within one business day of your order.
  2. Closed-house preparation12 hWindows and outside doors closed 12 hours before you open the device.
  3. Measurement2 days to 4 daysThe device stays in place 2 to 4 days.
  4. Sample return by mail2 days to 5 daysPrepaid and tracked. Mail it the day you stop the test.
  5. Laboratory processing3 days to 4 daysUsually 2 business days after the lab logs the sample in.

About 11 to 20 days from order to report.

How to test

  1. Register the kit by scanning the code on the box or entering the serial and activation code.
  2. Close windows and outside doors 12 hours before you start.
  3. Place the device on the lowest level you live in, 20 inches or more off the floor, away from drafts, kitchens, and bathrooms.
  4. Open it and log the start time in My Tests.
  5. After 2 to 4 days, close it, log the stop time, and mail it the same day.
  6. Read your report when we tell you it is ready.

Placement guide with the diagram

Questions

How accurate is this test?

The laboratory reports every result with its measurement uncertainty and detection limit. Radon varies by day and season, so the EPA asks for a second test before mitigating on a short-term result at or above 4 pCi/L, and recommends a long-term test for the yearly average.

What if I mail it late?

The lab accepts a device up to 10 days after the stop time. Past that it cannot be analyzed; we send a replacement at no charge the first time.

Is the lab fee really included?

Yes. The price covers the device, analysis, return postage, reminders, and your report. Nothing to pay when you mail the sample.

Can I share the report?

Yes. Every report has a PDF download and a share link that is read-only and revocable.