Heating mantle

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A heating mantle is referred to as a device which is used in laboratories to heat or temper certain media in glass vessels. Due to the various sizes of the glass vessels, the exact amounts of liquids which are necessary can be heated. The scope of volumes of a heating mantle at PCE ranges from 100 ml up to 10 liters. This ensures that every customer can get exactly the product that suits their individual requirements.

A heating mantle is used in laboratories for the exact preparation of samples and thus, it is very important that these devices have a high level of functionality and accuracy. A typical heating mantle from PCE works with a round-bottom flask which is inserted into a basket made of woven fabric. Inside that round-bottom flask, there is the liquid to be heated or tempered by means of the heating elements which are located in the heating mantle. PCE’s heating mantle portfolio comprises different sizes of the heating mantle itself and of the round-bottom flask like, for example, 1,000 or 5,000 ml, and the devices can reach different temperatures and have various levels of temperature regulation.

Temperatures of up to +450 °C (842 °F) are possible. The heat-up time is very short which enables laboratory professionals to start their work soon. Another advantage of using a heating mantle is that the heat is distributed very evenly, which means that the danger of hotspots on the flask is eliminated. Also, no condensed water will be created when using a heating mantle. In comparison to other tempering equipment like hot plates, Bunsen burners or water baths, a heating mantle are suitable for organic liquids which can sometimes inflame when using other equipment.

Working of Heating Mantles

A heating mantle is a device that converts electrical energy into heat energy. The internal components of a heating mantle take AC voltage as input and produce heat energy as output. Controlling the temperature of a heating mantle is simple and is generally done with the help of a rheostat.

Uses of Heating Mantles:-

  • It is mainly used when a solution is required to undergo evaporation, distillation, extraction, or other related processes.
  • It also helps to maintain the temperature of certain chemicals and solutions at a constant value.
  • Heating mantles are typically preferred over other heating devices to heat flammable solutions.

Advantages of Heating Mantles:

  • They are compact and portable in nature.
  • While heating a solution is poured into a glass container with the help of a heating mantle, there are minimum chances of glass shattering because the heating element is insulated from the container.
  • Heating mantles are less prone to wear and tear.
  • In the case of a heating mantle, the chances of spill damage are quite low.
  • Heating mantle is a safe way to heat flammable liquids as the separation between the heating element and the container acts as a barrier, and it prevents the chances of fire.
  • Heating mantle provides uniform heating of the substance.
  • Heating mantles are able to generate much higher temperature than most heating devices.

Disadvantages of Heating Mantles

  • Heating mantle can only be used for round-bottom flasks
  • The container is small in size, hence there exists a constraint on the volume of solution that can be heated at a time.

Safety Measures while using a Heating Mantle:

  • One should never plug the heating mantle directly into the socket because the excessive temperature might blow the socket or melt the fuse. To avoid this, a variable autotransformer should be used.
  • Do not use input voltage over or under the recommended level.
  • Remove the container from the heating mantle after use.
  • Do not use the device for vacuum distillation of heat-sensitive elements.
  • Make sure that the device’s insulation is in proper condition.

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