This Bico vibratory pulverizer is used, but in good condition. It uses 2 rings and a puck inside a 250ML (8" diameter) grinding bowl. A specially designed motor, directly coupled to a rotating eccentric, swings the bowl and components at a precise speed and distance for maximum grinding effeciency, thus rapidly reducing a wet or dry sample of minerals, or, rock, soil, or similar material to a final 400+ mesh.
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