... cooking oil; it removes impurity, odor, water, acid and alcohol etc. from oil completely and effectively. Treated cooking oil color is limpidity, ... press filter can remove the big and tiny impurity; the precision of purification can reach to 1 Micro. The Vacuum system ... oil to 45 C, Then it can remove the tiny water, soluble water, acid, alcohol and other volatility liquid and so on completely and ...