Profile: Crest Ultrasonics Corp. deals with ultrasonics. Our product categories are ultrasonic cleaning, ultrasonic transducers, industrial ultrasonic equipment, ultrasonic cleaning machines and ultrasonic generators. Our Genesis™ ultrasonic generator has 3 controls namely, amplitude control to vary ultrasonic power, duty cycle control to control the amount of ultrasonic energy delivered, and frequency control to adjust the frequency of the ultrasonic energy reducing audible noise from sub-harmonics. It is available in 25, 40 or 68 kHz frequencies. Our Tru-Sweep™ ultrasonic cleaners are available in 7 sizes from ½ gallon to 7 ¾ gallons in 3 different configurations. They feature analog or digital timers, adjustable thermostatically controlled heaters, and drains with flow control valve.