Abstract
In this study a specific gravity separator has been used in order to consider the effect of three levels of: longitudinal slop angles, vibration speeds, outlets for the produce and their effect on specific weight, productivity and seed purity. The results show the longitudinal horizontal slop angle (0) surpassed significantly in recording the greatest values for all characteristics of the study. While the second vibration speed surpassed significantly in specific weight and productivity and there were no significant effect in seed purity. in the product out lets, the first out lets achieved the highest significant specific weight and seed purity, were as the third out let surpassed in giving the highest productivity. from the interaction between the three factor we can see the interaction between (-2) longitudinal slope angle and the second vibration speed at the third out lit showed the highest productivity was opteined by the interaction between the same angle (-2) and first vibration speed at the first out lit.
