Where your sample goes.
Every Ridgewell device is analyzed at an independent analytical laboratory. This page is what we would want to know before trusting a number about our own home.
A technician logging a tray of devices at the laboratory intake bench.
Chain of custody
- Mailed. Your prepaid mailer is tracked. The tracking number posts to your test when it scans.
- Received. Intake scans the serial, checks the seal, and logs the time. You get the “arrived at the lab” message the same day.
- Analyzed. Activated charcoal adsorption, gamma spectroscopy. Each run includes blanks, duplicates, and spiked controls. A result outside control limits is rerun, not reported.
- Reviewed and posted. A second analyst reviews the calculation and the exposure window. Your report posts with the report ID and the analyst on record.
Credentials
| Laboratory | Independent analytical laboratory |
|---|---|
| Method | Activated charcoal adsorption, gamma spectroscopy |
| Turnaround | Usually 2 business days from receipt |
| Acceptance window | Short-term devices up to 10 days after the stop time |
Certificates available on request from support.
What a result cannot tell you
A test measures the air at one spot for one window. It is only as good as the placement and the closed-house conditions you report. That is why the report prints your reported conditions next to the number, and why the EPA asks for a second test before you spend money on a fix.
If something goes wrong
A device that arrives past its acceptance window, with a broken seal, or damaged is not analyzed. We mark the test “could not be analyzed” in My Tests, tell you why, and send a replacement kit at no charge the first time.