Brand new and high quality. Made of high-quality materials, more durable. This tank cleaner reduces up to 99% of odor causing bacteria, unsightly mold, & algae growth. This Humidifier Demineralization Cartridge helps to prevent and reduce the white-dust caused by minerals in hard water. This hard-water"dust"can contain calcium,lime or .The Demineralization Filters can help extend the life of your humidifier ,purifying water,Prevent odors. Demineralization Cartridge work for UHE-CM65, UHE-WM70, UHE-OC1, UHE-HDC4,UHE-CM45B, HE-CM25, UHE-CM25, UHE-WM16, UHE-OW14, UHE-WM85.Fit evaporative,Warm & Cool Mist Ultrasonic Humidifier, most humidifier,such as for ,for ,for ,for . The filters work with all for 1-gallon or larger ultrasonic humidifiers. Each demineralization cartridge gets 30-40 full tank uses. Just drop one humidifier charcoal filter into your humidifier tank and it will start to work.One humidifier cleaner can be used in humidifiers with a tank that is up to one gallon in size.Replace every 30-60 days. Colour: as shown Material: Plastic Size: 4.57x2.28CM Package Contents: 10 * Humidifier Tank Cleaning Cartridge Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.