Xikar Crystal Humidifier Jars
XIKAR Crystal Humidifier Jars emit and absorb moisture in your humidor maintaining a consistent rate of 70% RH. All Xikar humidifiers employ the use of crystals that are capable of absorbing 400x their volume of PG solution. When dry, the crystals look like salt grains. When PG solution is added, the crystals saturate and grow to completely fill the humidifier casing. Thus, you can pack a greater volume of solution in your smaller Xikar humidifier than you can with older, larger foam units (which are also only one-way systems).