BONECO Hydro Cell A200 Humidifier Filter with Activated Carbon, 2 pack

• Uses activated carbon technology to provide constant freshness in BONECO ultrasonic humidifiers
• Direction: Rinse and place the Hydro Cell in the tank of your unit
• Activates as soon as it comes into contact with water even if the humidifier is switched off
• To ensure the highest water quality in your humidifier, exchange the Hydro Cell every 1 to 2 months, depending on the water quality
• Uses: All BONECO & AIR-O-SWISS ultrasonic humidifiers except the 7146 Travel