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This video explains two ways of heating a solution or a solvent. The heating mantle is used to distill a solvent, the oil bath is used to reflux a mixture.

The heating mantle does not provide an accurate temperature and is therefore used to boil or distill a solution, a polluted solvent or a solvent with desiccant.

The heating mantle contains three heating elements, which can be turned on separately according to the filling height of the flask. The power supply provides different heating intervals. The output can be set on a scale of 1 to 10, where 1 stands for a low output and 10 is the maximum output. Before the distillation begins the magnetic stirrer and coolant is enabled. Since the flask contains a lot of solvent all heating elements are turned on and the heating output is set to 5. The heating mantle boils the solvent until it evaporates. After some time the filling height of the solvent has dropped and one of the heating elements is turned off.

The oil bath is used if an accurate temperature is needed to perform a fractionating distillation or power a chemical reaction.

Whenever heating a mixture a reflux condenser is used in order to recycle evaporated solvent. In this way the amount of solvent in the mixture remains the same. To heat the mixture the hot plate is turned on and a temperature range is set. The temperature of the oil bath is monitored using a thermometer. If necessary, the heating range can be adjusted. The temperature of the mixture is also monitored using a thermometer, since it can differ from the oil bath.