What is a laboratory heating blanket?

The heating blanket is a laboratory device that is equipped with a flexible, insulated and comfortable heating device that allows containers or containers to be positioned inside them, without those made of glass running the risk of breaking.

This equipment produces heat in an efficient, environmentally friendly, clean and safe way, which is why it is considered essential for technological, research or production applications. Its main use is to uniformly heat or temper organic liquids placed in reaction kettles, round bottom flasks or reaction vessels for the boiling, evaporation, distillation or extraction process. Heating blankets have a closed heating system, designed to prevent heated containers from exploding on their surface.

Basic characteristics of a heating blanket

  • Its temperature can reach up to 450 ° C.
  • Distributes heat evenly.
  • They have analog or digital controls.
  • Allows you to view the temperature through a screen.
  • High level of precision functionality.
  • They are padded for good insulation.
  • Sometimes you add sand to the heating mantle when the flask is not big enough.
  • Variety of sizes, temperatures and powers.

Structure of a heating blanket

Heating blankets are available in stiffer fabrics or constructions, some may be made of electrostatic paint coated stainless steel, with its heating element covered by high thermal resistance fiberglass. They can get to have the application shake, with controllers and without controllers. With them you can obtain different temperature ranges and have varied levels of regulation. They provide a short heating time, distribute heat without creating condensed water, do not produce flames, and are quite safe to heat above 100 ° C.

Types of warming blankets

Most warming blankets are hemispherical in design and come in a variety of sizes to accommodate various shapes:

  • Heating blanket with integrated temperature control: This blanket heats and controls the temperature with its infinite range control and maintains a stable temperature. Heats up to 450 ° C. The interior is made of fiberglass cloth and the exterior has an aluminum shell. This blanket can be used on a magnetic stirrer without problems and can be adapted to a digital controller.
  • Magnetic Stirring Heating Blanket: This blanket magnetically agitates, heats and controls the temperature with its infinite range control and maintains a stable temperature. Heats up to 450 ° C. With its continuous use motor, it regulates the speed so that it is stable. The interior is made of fiberglass cloth and the exterior has an aluminum shell, with metal protection and integrated magnetic stirrer for spherical flasks.
  • Multiple heating blanket: This blanket is used to heat spherical flasks in a delicate and uniform way, it can be used for the soxhelt extractor, for refluxing and distillation. It is manufactured with an aluminum cover and a steel cabinet with an epoxy-polyester coating. The heater is made of fiberglass with chrome-nickel resistance. It has independent infinite range temperature control for each heater.
  • Blanket for spherical bottom cylindrical reactor: This blanket is generally made with a ceramic fiber heater and chrome-nickel resistance. It has an infinite range temperature control that allows to regulate a stable temperature; its shape allows the heating of cylindrical reactors with a spherical bottom.

Precautions when using a heating blanket

  • Do not use the heating blanket with combustible or flammable materials, which may cause fire or an explosion.
  • Do not use it in damp or wet spaces.
  • Wear suitable safety clothing, gloves, glasses, and coats.
  • Handle bottles and containers with care.
  • Never operate the heating mantle without fluids inside the distillation flask.
  • Do not let the fluid touch the cavity of the blanket.
  • Before cleaning or repairing the blanket, unplug it from the power supply.
  • Always use a grounded outlet.

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