Quote:
Originally Posted by RonC
these crystals are what is used in Drymistat brand humidity tubes. They are also what is in the Xikar Gel Humidifiers, and the gel humidifiers that I sell. Do not fill them with straight distilled water. Fill them with a water /pg solution, and your humidity will stay at about 70%. one advantage of these crystals is that they hold a LOT of humidor solution. they last a long time.
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Pardon my ignorance, but what is a "pg solution"?