A dispersion cell (Homogenizer Disperser Mixer model AD300S-H) (Fig. -) has a rotor-stator systems, which was used to generate an oil/water emulsion (รูปที่ -). The dispersed phase (oil) was transported through the radial openings of the rotor systems and mixes with the liquid in the gap between the rotor and the stator into aqueous solution of UF precondensate (Fig. -).