Jpl ultrasonic cleaning 750ml james products ultra 7000s this 750ml ultrasonic cleaner from jpl is the perfect way to return your cd dvd s jewellery and watches back to new the number of uses are endless from cleaning spectacles sunglasses to grubby coins while model makers will find it indispensable p ultrasonic cleaners function by producing sound waves that are transmitted into the tank and cleaning solution these waves create millions of microscopic bubbles which collapse or 821