One product was selected from the previous trial based on performance. The product was used at 10% diluted with DI water and was used at room temperature. The solution was used in a 40 kHz Branson 3510 ultrasonic unit after being degassed for 5 minutes.
The filter was totally immersed into the ultrasonic tank and cleaned for 20 minutes. Observations were made at five-minute intervals. Following cleaning, parts were rinsed with a DI water spray for 2 minutes at room temperature. The cleaned part was dried with compressed air at room temperature for 3 minutes.
Parts were photographed before and after cleaning. The cleaning solution also was photographed to help determine if the filter was being cleaned.