The draper 60985 expert 9l ultrasonic cleaning tank is extremely effective at removing dirt and grime on watch parts jewellery not gemstones coins pcb boards and electrical components engine vehicle and mechanical parts etc the draper ultrasonic cleaning tank uses the latest technology for delivering high frequency vibrations in fluid which enacts a process called non inertial cavitation drapers39s 9l ultrasonic cleaning tank is suitable for use with water or non volatile cleaning a