30 Nov

Muffle Furnace

The Muffle Furnace (which is also known as a Retort Furnace) is an essential Laboratory Tool where the subject is isolated from the fuel and all of the products of combustion including gases and flying ash.

The muffle furnace is typically a front load type of oven or kiln for high temperature applications.  An example of applications would be:

  • Fusing Glass
  • Creating Enamel Coatings
  • Ceramics and Soldering
  • Burning off Specific Types of Compounds

A Chemist will use a muffle furnace to determine what proportion of a sample is non-combustible and non-volatile (i.e. Ash).   The ovens are heated by means of conduction, convection and/or radiation, working from a power source of 120 or 220 volts and utilize temperatures reaching 1800 degrees Celsius.  Depending on the application, many of the furnaces are Multifunctional  Programmable to accommodate for  ramping, soaking and sintering (method used for creating solids from powder).  An example of sintering would be when ice cubes in a glass of water adhere to each other.