Benchtop Ball Mill LBBM-A30 - Planetary Ball Mill Machine Labtron Benchtop Ball Mill runs 2 or 4 jars for dry and wet milling with 70 to 580 rpm speed. It handles ≤10 mm input size and produces granularity to 0.1 µm. Frequency control, ≤65 dB noise, timer to 9999 min, and safety features support stable operation