Elmasonic Select ultrasonic cleaning devices equipped - 37 kHz ultrasonic frequency (control range -2,5 / +5,5 kHz) - 4 memory locations for cleaning programs, available via quick selection - 5 ultrasonic modes for need-based sound field distribution in the ultrasonic bath. • degas - Quick degassing • eco - Quiet, energy efficient operation and longer service life • sweep - Uniform ultrasonic cleaning • pulse - For stubborn contaminations • dynamic - Automatic change between pulse and sweep modes for even better cleaning results