High separating efficiency – excellent grain cleaning With its high separating efficiency. the destoner is capable of efficiently separating even small and lightweight pebbles with the size of a grain from the stream of product, thus ensuring optimal grain cleaning. The excellent separation of high-density particles such as stones and pebbles, glass, and metal allows wear and tear of the downstream elements within the production chain to be appreciably reduced. Carefully cleaned raw materials are a precondition for achieving a high end product purity and complying with food safety regulations.