How to calibrate temperature/hydrometer

[Tania]

Hello,
Maybe you could do a salt test and calibrate them? Even if the models are different, it works the same way:

Q: The measured result of ITH-20 is inaccurate, different from the reading of other hygrometers

A: Can you test it with the salt method? To test your hygrometer using salt, you just need a few household supplies: A small food storage bag that zips A tiny cup or bottle cap from a 20-ounce soda Some table salt Water Put salt on the lid and add an appropriate amount of water to make a thick slurry. You don’t need to add too much water, just let the salt become wet. In case you accidentally add too much, you can use a paper towel to absorb the excess water. Put the cap and the hygr…

If the readings are off, it can be adjusted with the calibration settings.