HoMedics UHE-HDC4 Ultrasonic Humidifier Demineralization Cartridges

Helps prevent calcium and lime build-up in your HoMedics brand ultrasonic humidifier. Reduces mineral build-up and white-dust caused by hard water when used in ultrasonic humidifiers. Works with all HoMedics ultrasonic humidifiers with a capacity of one gallon and larger: UHE-OW14, UHE-WM85, UHE-WM65, UHE-CM25, UHE-CM45, UHE-OC1. Simply drop one cartridge into water tank. Replace cartridge every 30-40 fillings, depending on the water hardness. Includes 4 cartridges.