It are essential accessories for achieving fine particle size reduction in laboratory sample preparation. Made from high-quality zirconium oxide (ZrO₂), these grinding balls offer exceptional hardness and wear resistance, making them suitable for processing hard, abrasive materials. Their 30 mm diameter is ideal for homogenizing and pulverizing samples in various ball mills, including Retsch's Planetary Ball Mills and Mixer Mills. The pack contains an appropriate quantity of grinding balls, ensuring ample supply for multiple applications.