The EcoMet 300® Grinder-Polisher and AutoMet 300® Power Head are robust, high-performing metallographic grinder-polishers. They are designed for the materials analyst who requires versatility in both manual and semiautomatic sample preparation with consistent and repeatable results. The EcoMet 300 Grinder-Polisher can be used alone for manual grinding applications or combined with the AutoMet 300 Power Head for semiautomatic applications. Features include variable speed controls, membrane keypad, unique LED lighting, retractable water hose, quick release chuck, replaceable bowl liner and a 360-degree bowl rinse system. Users can now successfully prepare anywhere from a single, simple sample to multiple, unique geometry-shaped samples.