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In order to calibrate your analog hygrometer, you will need a zip-lock bag, salt, and a small shallow open container, like a bottle cap.

In the shallow container place about a teaspoon of salt and add a few drops of water to get it wet. Don’t add too much water as you just want to create a moist pile of salt. Place the container in the bag along with the hygrometer. Close the bag with some air trapped inside and let it sit for 6 hours. Do not rush this part! At the end of the 6 hour stabilization period, your hygrometer should exactly read 75 relative humidity (RH).

If it does not, you can adjust most analog hygrometers with a small screwdriver by turning the small screw on the back of the hygrometer. If your hygrometer does not have a adjustment screw on the back, you can simply remember what the differential between what the hygrometer actually reads and the 75 RH reading that it should have.

If your not satisfied with the accuracy of an analog hygrometer, there are very good digital hygrometers on the market today. One of the best is the HygroSet Digital Hygrometers. These are basically good to go when you activate them. They publish not only a super accurate digital readout (+/- 1%) of your humidors humidity level, but it also gives you the internal temperature reading of your humidor. Temperature control is just as important as humidity control when it comes to cigars.

The HygroSet Digital Hygrometers at Humidor Vault come with the HumidiPak One-Step Calibration kit to calibrate the digital hygrometer. Simply open the outer bag of the calibration kit and place your activated digital hygrometer inside. Let this sit for 24-36 hours and at the end of this time your HygroSet Digital Hygrometer should read 75.5RH. If it doesn’t, there is a adjustable knob that you can turn to accurately calibrate the digital readout.

If you have any questions, shoot us a call at 800-687-1586 or send us an email at support@humidorvault.com.

Humidor Vault

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