Hygroset Hygrometers

The HygroSet is the first digital hygrometer of its kind capable of being adjusted after calibration. Each click of the adjustment knob changes the humidity display (+ / -) by 1%.

*Do not mix different Boveda RH levels within the same container, and do not use Boveda in the same container with other humidification products. They will fight against each other and reduce the efficiency of the Boveda. One might expect that if you use a high RH Boveda in the same container as a lower RH Boveda that you'll achieve an environment somewhere in the middle. That is not the case, instead the moisture just transfers back and forth between the Bovedas.


Calibration: For best results, use the One-Step Calibration Kit. 1. Remove plastic tab from battery compartment to start your digital hygrometer. 2. Simply place your hygrometer inside the bag and completely re-close the top zipper. 3. Allow the calibration bag to sit for 24 hours at room temperature, 65 degrees F to 75 degrees F. 4. The hygrometer should read +/- 0.3% of 75%. 5. Note the difference, if any, between the hygrometer reading and 75%. This will be the number of percentage points you’ll need to adjust for corrected future readings. 6. Proceed to adjustment. Adjustment 1. Turning the adjustment wheel (Control #3) will adjust the humidity reading 1% for every 1 click/dash. Turning clockwise increases the percentage, and counter-clockwise decreases it. (Ex: The hygrometer should read 75% but it is reading 72%. Turn the adjustment knob 3 clicks clockwise.) 2. Press the Set button (Button #2). Temp and humidity will display “–” for a few seconds and reset to Celsius. Press Button 1 to change to Fahrenheit. NOTE: Once the hygrometer is out of the 75.5% atmosphere of the bag, it’s reading the ambient air. This means that turning the knob the correct clicks and pressing reset will NOT show 75%, as the hygrometer is now reading the air in the room. If you want to confirm you’ve adjusted it properly, put it back in the bag for another 24 hours.