Division of liquid-liquid mixing and stirring grades

Level 1-2: applicable to the process with low flow speed ① the specific gravity difference is less than 0.1 and the solution is mixed evenly. ② The viscosity ratio is greater than 1 / 100, and the solution is mixed evenly. ③ Different materials are mixed evenly for a long time. ④ The mixed liquid produces a smooth flow on the surface. Grade 3-5: applicable to ordinary mixing process ① the specific gravity difference is less than 0.5 and the solution is mixed evenly. ② The viscosity ratio is greater than 1 / 1000, and the solution is mixed evenly. ③ Low viscosity liquids produce small fluctuations on the surface. Grade 6-8: applicable to most mixing and stirring processes ① the specific gravity difference is less than 1.0 and the solutions are mixed evenly. ② The solution with high viscosity difference is mixed evenly. ③ The surface of low viscosity liquid fluctuates. Grade 9-10: applicable to strong mixing process. ① The specific gravity difference is large, and the solutions are mixed evenly. ② The solution with high viscosity difference is mixed evenly. ③ The surface of low viscosity liquid oscillates violently.