Hot plate stirrers are being used in place of mechanical stirrers as they reduce effort, do not produce noise, and are comparatively more efficient.ģ. A hot plate stirrer is used in biology and chemistry labs to speed up reactions.Ģ. The size of the magnetic bar should be selected on the basis of the viscosity and volume of the solution.ġ. For proper and even stirring, the container must be placed in the centre of the hot plate. This electromagnetic field produced by the device interferes and interacts with the still magnetic field of the bar magnet, causing the solution to rotate and get mixed up properly, thereby causing the solution to mix and heat up at the same time. The heating mechanism heats up the solution, and an electromagnetic field builds up. When the main switch of the hot plate stirrer is turned on, the heating mechanism and the electromagnets get activated. One of the knobs is used to adjust the temperature of the device, while the other knob is used to control the speed of rotation. The hot plate stirrer is equipped with two controlling knobs. The beaker or flask containing the solution and the stir bar is placed on the top of the hot plate.
It is required to be properly immersed into the solution. The bar is coated with a non-reactive material therefore, it is chemically inert in nature. A magnetic bar, also known as a stir bar, is placed in the container that contains the solution.
The internal structure of the hot plate is embedded with a number of electromagnets. Advantages and Uses of Hot Plate StirrerĪ hot plate stirrer typically works on the basis of a rotating electromagnetic field.
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