Harvested grain is usually fairly clean.

Usually being the operative word, as this is dependent on a number of critical factors; the correct settings and capacity being used, the grain being dry, no heat damage taking place and kernels not being broken during the harvesting process - many factors, which are difficult to control. In addition, the quality of grain begins to deteriorate as soon as it has been harvested, so it is imperative that dirt and impurities are removed to delay the deterioration process and ensure that the stored grain is of high quality for end-users. It is therefore highly recommended that harvested grain is passed through a grain cleaner and/or pre-cleaner in order to ensure that the quality of the grain is optimized before it goes into storage.

Pre-cleaning grain before storage plays two vital roles:

• Adding value to the grain through the removal of dirt, impurities and damaged particles.
• Ensuring a longer life of the grain while it is in storage.