| Category | Muffle Furnace |
| Model | Retort Furnace |
| Max Temperature | 800°C (1472°F) |
| Working Temperature | 700°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | 4mm diameter, Type K, Tolerance Class 1, -40 to +750°C range, MgO insulated mineral, Inconel 600 sheath |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| Chamber (MM) | 250 x 250 x 375 |
| Outer Body (MM) | 655.0 x 860.0 x 650.0 |
| Chamber Volume | 23.4 Litres |
| Volume (cu.ft) | 13.3 ft³ |
| Power Load | 10.76 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 111.52 kg |
| Chamber Shape | Square |
This furnace incorporates a sealed retort—a vessel or chamber within the furnace—that holds the workload. Operating from 600°C, the retort can be filled with a controlled atmosphere (like endothermic gas for carburizing) independent of the combustion chamber. The working principle allows for processing in reactive atmospheres while the heating is done externally, protecting the furnace's heating elements from the atmosphere. Its purpose is for processes like carburizing, nitriding, sintering, and bright annealing where atmosphere composition is critical and must be contained.
Equivalent chamber references: 250 x 250 x 375 MM, 25 x 25 x 38 CM and 10 x 10 x 15 INCH. Buyers searching for 800 Degree Celsius Retort Furnace 250 x 250 x 375 MM chamber; 800°C Retort Furnace 250 x 250 x 375 MM; 800 Degree Celsius Retort Furnace 25 x 25 x 38 CM chamber; 800°C Retort Furnace 25 x 25 x 38 CM; 800 Degree Celsius Retort Furnace 10 x 10 x 15 INCH chamber; 800°C Retort Furnace 10 x 10 x 15 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 800 Degree Celsius (°C) Retort Furnace 250 x 250 x 375 MM Chamber for buyers who search by exact machine type, chamber size and 800°C temperature rating. This page is specific to the MM dimension version, so the chamber size is presented in the unit normally used in the buyer's drawing, tender or purchase request.
This configuration is suitable when the sample load must fit a 250 x 250 x 375 MM chamber with usable chamber volume of 23.4 litre, approximate power load of 10.3 kW, square chamber profile. It is commonly selected for laboratory, QC, metallurgical, ceramic, pharmaceutical and industrial heat-treatment work requiring stable heating and repeatable process conditions. Typical use includes general laboratory and industrial heat-treatment applications requiring stable, repeatable temperature control.
A muffle furnace isolates the sample from direct contact with heating elements or combustion gases, giving cleaner, more repeatable results than an open flame or hot-plate process.
Because muffle furnaces are used across ashing, drying, calcination and light heat-treatment, the chamber and controller are specified for flexibility rather than one narrow process window.
As a general-purpose muffle furnace, this model covers a broader range of routine heating tasks than a process-specific ashing, tube or sintering furnace, making it the practical default when the lab runs mixed sample types rather than one dedicated process.