AIR-O-SWISS Demineralization Cartridge

The AIR-O-SWISS demineralization cartridge AOS 7531 helps reduce white dust, which is a deposit of minerals left behind from the water in your humidifier. Featuring Ag+ Ionic Silver Technology, the plastic housing of the demineralization cartridge is silver treated to inhibit microbial growth on the surface of the cartridge. Fits Models AIR-O-SWISS Humidifiers: 7131 (AOS 7131), 7133 (AOS 7133), 7135 (AOS 7135), 7142 (AOS U7142), 7144 (AOS 7144), 7145 (AOS 7145), 7147 (AOS 7147), U200 (AOS U200), U600 (AOS U600), U650 (AOS U650). Contains one demineralization cartridge. Removes minerals from the water to prevent "white dust" Plastic housing of the demineralization cartridge is silver treated (Ag+ Ionic Silver Technology) to inhibit microbial growth on the surface of the cartridge Cartridge is refillable using Air-O-Swiss Demineralization Cartridge Refill 3pk Model: AOS 7531 (AIROSWISS Demineralization Cartridge AOS 7531) Replace every 2-3 months The cartridge should be replaced every 2-3 months