How Does a Magnetic Stirrer Work?

2017-02-10 11:56:00
Nina
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Summary : Magnetic stirrer is the common seen lab instrument to mix liquid, mainly used for stirring low viscosity liquid or solid-liquid mixture. Do you know how does a magnetic stirrer work?

Magnetic stirrer is the common seen lab instrument to mix liquid, mainly used for stirring low viscosity liquid or solid-liquid mixture. Some customer may ask us about how does a magnetic stirrer work or what’s the magnetic stirrer working principle . Let us tell you the answer.  

magnetic stirrer working principle

Lanphan ZNCL-BS Magnetic Stirrer

How does a magnetic stirrer work?

Magnetic stirrer working principle is repulsive for like charges and attractive for unlike charges. Micro motor drives magnet to generate rotating magnetic field to stir the stirring bar in vessel, making solution conduct completely mixed reaction, stirring speed is adjustable, widely applies to solvent stirring in different viscosity. It equips with temperature control system, which can heat and control the temperature of the sample according to experiment requirement, maintaining the needed temperature condition and guaranteeing the mixed liquid meets the experiment need.

How to maintain a magnetic stirrer?

1. Put the bottle(or other containers) on the working table.

2. Switch on the power switch, indicator will light.

3. Choose heating, turn on the heating power switch, the heating indicator will light, this means the heater is working now. Insert the sensor solution, adjust the thermostat knob to the desired temperature scale.

4. Adjust the speed control knob, rose to the required speed.

5. After work, set the speed control knob at the lowest speed position, the heating switch is in a non-working state, turn off the power switch, cut off the power supply.

6. Clean the working surface and sensor, make sure no water and dirt on it.

What’s the precautions when using a magnetic stirrer?

1. Instrument housing should be properly grounded to avoid accidents.

2. When unused for long periods, should cut off the power, store a dry and ventilated place.

3. The instrument should be kept clean and dry, prohibit the solution flows into the machine, to avoid damage to the machine, cut off the power when not working.

4. During mixing, when find stirrer is beating or non-stirring, reduce speed or disconnect the power to check whether the flat bottom of the beaker, the location is positive.

5. Stirring heating time not too long, intermittent use can extend the life, not heated without stirring.

6. Medium-speed operation can continuous work for 8 hours, high-speed operation can continuous work for four hours, to prevent severe vibration during operation.

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