How to Calibrate your Hygrometer

Hygrometers are the gauges which measure humidity levels and are found inside humidors. They should be re-calibrated at least once a year, preferably two.

Calibrating a hygrometer is a relatively easy process.

First, take a wet towel (it doesn't have to be dripping wet, just soaked through) and completely cover the hygrometer with it. Leave it for half an hour and check the reading. It should be greater than or equal to 98%. If it is then nothing else need be done.

If it isn't, look for a screw on the back of the hygrometer and screw it until the reading is 98%. You have successfully calibrated your hygrometer.

IMPORTANT NOTE: make sure you use distilled water on the towel, NOT tap water. This is because tap water contains minerals and residue which may end up inside of your hygrometer, potentially causing bad taste and odors on your cigars.