Can I calibrate my hygrometer using any RH Boveda?

Yes, you can use any RH Boveda to calibrate a hygrometer. The Boveda calibration formula comes pretty close to creating an ideal environment. (Within an airtight environment, the recommended calibration formula for Boveda packs is at a +/- 1% calibration.)

If you’re calibrating a Boveda Butler, please refer to the User’s Guide—you can download the instructions here.

Here’s how to calibrate a hygrometer with Boveda:

1. Put the Boveda and your hygrometer or humidity sensor in an airtight environment. like a Tupperware® container or Ziploc® bag.
2. Tightly close the container or bag.
3. Check back in 24 hours.
4. If your hygrometer reading doesn’t match the RH printed on the Boveda pack, adjust by the number of points the hygrometer is off, then re-test using the same Boveda.

For added accuracy, use the professional-level One-Step Calibration Kits.

Do not mix Boveda RH levels in the same container when you are calibrating your hygrometer.