To fully automate sample preparation, it is essential to combine the automatic cleaners with the abrasive suspension dispenser. This is an autonomous unit equipped with a programmable timer for regulating the duration of the work cycle with pause/work phases. It can control up to 3 individually selectable dispensers. The dispenser is composed of 3 parts: • control unit; • 3/4 250 ml bottles for suspensions; • Stainless steel holder with nozzle. The dispenser allows for a fully automatic preparation cycle.