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 magnesium.The Demineralization Filters can help extend the life of your humidifier ,purifying water,Prevent odors.Demineralization Cartridge work for HoMedics 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 Vicks,for LEVOIT ,for Honeywell,for Homasy.The filters work with all for HoMedics 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 shownMaterial: PlasticSize: 4.57x2.28CMPackage Contents:30 x Humidifier Tank Cleaning CartridgeOnly the above package content, other products are not included.Note: Light reflection 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.