The M-Prep 5x™ grinding/polishing machine is designed for manual sample preparation. The powerful, quiet motor provides constant high-torque output throughout the speed range, in either 10-500 or 20-1,000 RPM configurations. The 7" color LCD touchscreen with keypad entry is used to control all functions with an intuitive interface optimized for efficiency. Five (5) user-defined preset buttons allow quick and easy RPM selections in either clockwise or counterclockwise rotation. Durable: Engineered and constructed using precision machined, hard-anodized aluminum and stainless steel components to provide maximum longevity. Easy to use: Straightforward controls and user-friendly functions for quick, repeatable operation. Either standard or magnetic 8"/203 mm or 10"/254 mm platens may be used with any plain/adhesive backed or magnetic system disc. FEATURES Variable platen speed: either 10-500 or 20-1000 RPM (in increments of 10 RPM) with five (5) adjustable preset buttons - - 7" color LCD touchscreen with keypad entry to control all functions Powerful, quiet 0.6 HP (470 W) Brushless DC motor provides constant high-torque output throughout the speed range - - Intuitive interface optimized for efficiency and function Quick-change platen design, anodized to resist wear and corrosion - - Sturdy RIM, aluminum and stainless steel construction Clockwise/counterclockwise platen rotation - - Molded one-piece corrosion and impact resistant cover Retractable coolant nozzle that allows quick and easy sample/bowl cleaning - - Electronic coolant control with adjustable flow control valve