Ultrasonic Cleaner, ultrasonic, cleaner (1) Lowest back-repair rate (2) 3L,4L,5L,6L,10L,22L,33L or more. ... Ultrasonic Cleaner, ultrasonic, cleaner(1) Lowest back-repair rate(2) Safe(3) 3L,4L,5L,6L,10L,22L,33L ... not normally be effective. The cleaningsolution contains ingredients designed to make ultrasonic cleaning more effective. For example, reduction of surfacetension increases ...