Dispersing and Milling Portable Stirrer is a versatile mixer used for mixing of small quantities of liquid at slow speed and comes with various types of impellers. S. F. Engineering Works supplies Dispersing and Milling Portable Stirrer. S. F. Engineering Works is the manufacturer of process plants and machinery required by the Chemical, Paint, Inks Pharmaceuticals, Minerals, Food and related Industries. The Dispersing and Milling Portable Stirrer operates on any one fixed speed and is available with shaft of sizes 3’ and 4’.