Xikar Propylene Glycol Humidifier is the ideal addition to the Xikar Crystal Humidifier. It can perfectly be used with other brands of crystal humidifiers. Its large capacity of 473 milliliters will ensure a lasting serenity, allowing you to recharge your humidifier as soon as necessary. The liquid is antifungal, and you will be sure that your humidifier will not be clogged. The solution is ready for use, and there is no preparation to do. Simply pour with the dropper integrated into the cap of the bottle, a system that allows to accurately dose the filling of your humifier.