A muffle furnace or muffle oven (sometimes retort furnace in historical usage) is a furnace in which the subject material is isolated from the fuel and all of the products of combustion, including gases and flying ash.
Muffle furnace is often a front-loading box-type oven or kiln for high-temperature applications such as fusing glass, creating enamel coatings, ceramics and soldering and brazing articles. They are also used in many research facilities, for example by chemists in order to determine what proportion of a sample is non-combustible and non-volatile (i.e., ash). Some models incorporate programmable digital controllers, allowing automatic execution of ramping, soaking, and sintering steps. Also, advances in materials for heating elements, such as molybdenum disilicide, can now produce working temperatures up to 1,800 degrees Celsius (3,272 degrees Fahrenheit), which facilitate more sophisticated metallurgical applications.
Usually no combustion involved in the temperature control of the system, which allows for much greater control of temperature uniformity and assures isolation of the material being heated from the by products of fuel combustion.
Standards: EN 12697-1 clause C, EN 13108
Designed for high temperature heatings.
Structure composed of in sheet-steel, frontal furnace in diecasted steel to avoid the aggretion of the acid smokes.
The thermic insulation in ceramic fibre avoids the smallest heating leakage saving energy accordingly.
Electronic regulation of the temperature is obtained through a digital thermostat. This furnace is also used for the determination of residual mineral matter deriving the incineration of bituminous mixtures to (EN 12697-1 clause C Standard).
Max. temperature: 1100 °C
Chamber stability: ± 1 °C
Chamber uniformity: ± 10 °C
The chamber is muffle made and it is not suitable to test aggessive chemical samples.
Inside dimensions: 200x300x133 mm
Useful Volume: 7 to 60 litres
Outside dimensions: 440x620x510 mm
Power supply: 230V 1ph 50-60Hz 1.8kW
Weight: 30 kg approx.