Xikar Propylene Glycol PG Solution - 16 oz. 815XI

Easy to use. Use every time solution. Won't plug humidifiers. Pre-mixed for convenience. Purity: solution is created with a reverse-osmosis system, resulting in less then 4 ppm impurities. Mix: it is a perpetual solution, whose mix of PG and purified water is such that the PG biodegrades at the same rate as refill of the devices. Crystals: the crystals allow for absorption of up to 450x their volume in the PG Solution.