A250 Aqua Pro Humidifier Water Filter for Boneco & Air-O-Swiss Ultrasonic Humidifiers
2-in-1 Water Filter for ultrasonic humidifiers significantly reduces water hardness. Plus, activated carbon absorbs impurities and removes odor from the water. The Aqua Pro is extremely economical and lasts up to 6 months. The Aqua Pro includes a free water test strip to measure the lifetime of your filter. The Aqua Pro is a direct replacement for the A7531 Demineralization Cartridge.
Used in the following BONECO (Air-O-Swiss) humidifiers;