[EXCELLENT PERFORMANCE] Our Demineralization for humidifier was made of high-quality Cation Exchange Resin and Activated Carbon, which can effectively reduce mineral buildup and awful odors by absorbing impurities from hard water. Efficiently purify the water [REDUCE THE WHITE-DUST] This demineralization replacement to absorbe the calcium, and magnesium ions and white-dust in hard water. It prevents mineral residues from pooling on furniture and bedding, creating a healthy and comfortable environment. Keep your humidifier running efficiently, extending its service life [FIT MOST HUMIDIFIERS] This humidifier water can work with a 0.5-gallon tank or larger. Evaporative / Steam Vaporizer / cool & warm mist humidifiers. Also, it is compatible with most of humidifier, including small / mini / portable / large [VALUE PACKAGE] The package contains 12 packs of humidifier filter replacements. Simply drop 1 Ultrasonic Demineralization Filter into your humidifier tank, you're ready for use. It can be used 30-40 times per depending on the water volume and quality Color:As Shown Material:ABS Package Contents: 12 * demineralized ink cartridges Only 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.