#### Planetary Ball Mill PM 400 RETSCH powerful and quick grinding

Planetary Ball Mill PM 400 for size reduction with the highest degree of fineness powerful short grinding times reproducible results Learn more. Retsch GmbH. ... Variable speed from 30 to 400 rpm, speed ratio 1:2 | 1: | 1:3 ; Batchwise processing with max. 4 x 220 ml ;