The overhead stirrer is an instrument mainly used for mixing, homogenizing, suspending, injecting gases and circulating high viscosity substances. It can be used for liquid-liquid mixing, solid-liquid suspension, gas-liquid or liquid-liquid dispersion and so on. It is suitable for mixing various viscous solutions and reagents, such as: industrial and petroleum applications, beverage production, dairy production, food processing, sugar and confectionery production, ceramic applications, water treatment, cosmetic production, colorant and paint production, paper making, etc. The CSU Overhead Stirrer is designed and assembled to be a very cost-effective product.