Parkell urges all scaler users to monitor the condition of the water filter periodically and change the filter every 3-4 months, or whenever noticeable darkening of the disk occurs, or when water flow decreases. The most common reason for service for ultrasonic scalers is failure by the user to periodically change the water filter. This will result in contamination and clogging of the internal water components.

Includes 10 water filter disks.