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Equipment

Stir Bar
AKA: Magnetic Follower

Summary

A magnet which allows liquids to be stirred.

Operation

A stir bar or magnetic follower is a small device to be used alongside a magnetic stirrer.

It consists of a small bar magnet encapsulated in glass or plastic, allowing it to be chemically inert.

The stir bar is placed into a flask or beaker of liquid on the deck of the stirrer. When the rotating magnet in the stirrer is started up, the stir bar will follow the rotations, effectively stirring the liquid.

Safety

 CautionThe contents of this page are for information only. Please refer to CLEAPSS or ASE safety advice and/or publications before undertaking any preparation, practical experiment or using any equipment featured on this site or any other.