




The 90-1B magnetic stirrer is a large-capacity single-stirrer magnetic stirrer, which is driven by a brushless DC motor, with stable speed, large torque, and a digital display speed. The magnetic force is extremely strong and the structure is firm. It is suitable for large-capacity stirring. .
Chijiu 90-1B magnetic stirrer is a large-capacity magnetic stirrer with a stirring volume of 20L, and the stirring speed is 60~2000r/min.

1. Test run: place the 90-1B magnetic stirrer stably, connect the power cord, plug in the power supply, turn on the power switch, the power indicator light is on, and the digital display is "0000". The sound of the motor running from slow to fast, and the digital indication of the speed, after the trial run is normal, turn the speed to the lowest and shut down.
2. When in use, put the container in the middle of the stirrer, and put the stirrer so that the stirrer is in the center, then turn on the machine, adjust the knob, select the required stirring speed, and gradually accelerate or decelerate when adjusting the speed.
Note: The container needs to be made of non-ferromagnetic materials, and copper and aluminum containers should not be used as much as possible. The bottom needs to be smooth and the thickness should not exceed 10mm.
1. The power supply should have reliable grounding:
2. The center of the working surface of the agitator is Φ85mm and cannot be concentrated to bear large pressure;
3. The liquid medicine in the container should not be overfilled, so as not to overflow when stirring;
4. It is forbidden to put the stirrer directly on the stirrer for trial operation.
张育霞;程芳卉 - 《身边物品在中学物理实验中的巧用》