The draper 60987 expert 27l ultrasonic cleaning tank offers an easy to use design which 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 60987 ultrasonic cleaning tank use the latest technology for delivering high frequency vibrations in fluid which enacts a process called non inertial cavitation draper39s expert 27l ultrasonic cleaning tank has been manufac