Agitators or stirrers come in a vast array of shapes and sizes, including marine propellers, foils, axial and radial flow turbines, gate and anchor stirrer/scrapers, etc

Gate/horseshoe agitators used for liquids of high viscosities – in the order of 103 -105 [cP]; they are low-speed agitators with rotational speed not exceeding 1.5 m/s.