It was used to remove heavy impurities such as stones, metallic particles ,branches, fragmentized seeds sands. 

1. The pebble selector separates beans, seeds or grains in the same dimension (length, width, thickness and shape) but different weight according to material gravity principle.

2.It was   primarily used in the elimination of heavy impurities such as stones, metallic particles ,branches, fragmentized seeds, sands and other high-density matter from grain stream. Stones can be removed automatically through specific pipeline.

3. It is ideal for beans and raisin.