Includes 4 cartridges with easy to follow instructions. Reduces the potential for white dust, a deposit of minerals left behind from using hard water in your humidifier. Let soak in water for 10 minutes before first use. Simply drop 1 demineralization cartridge into water tank. Replace cartridge every 30-40 fillings depending on water hardness. If you notice an increase in white dust build-up, replace cartridge. Compatible with all HOMEDICS ultrasonic humidifiers 0.5 Gallon and larger. For use with HOMEDICS models UHE-CM18, UHE-CM45, UHE-CM65, UHE-OC1, UHE-WM10, UHE-WM15, UHE-WM11BD, UHE-WMTF25, UHE-WM70, and UHE-WM85. Keep your surroundings consistently comfortable with humidifiers and accessories from HoMedics®.

Includes 4 cartridges with easy to follow instructions. Reduces the potential for white dust, a deposit of minerals left behind from using hard water in your humidifier. Let soak in water for 10 minutes before first use. Simply drop 1 demineralization cartridge into water tank. Replace cartridge every 30-40 fillings depending on water hardness. If you notice an increase in white dust build-up, replace cartridge. Compatible with all HOMEDICS ultrasonic humidifiers 0.5 Gallon and larger. For use with HOMEDICS models UHE-CM18, UHE-CM45, UHE-CM65, UHE-OC1, UHE-WM10, UHE-WM15, UHE-WM11BD, UHE-WMTF25, UHE-WM70, and UHE-WM85. Keep your surroundings consistently comfortable with humidifiers and accessories from HoMedics®.