| Category | Muffle Furnace |
| Model | Ash Furnace |
| Max Temperature | 900°C (1652°F) |
| Working Temperature | 800°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | -40 to +900°C range, MgO insulated mineral, Inconel 600 sheath, 6mm diameter, Type K, Tolerance Class 2 |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| Chamber (MM) | 390 x 730 x 390 |
| Outer Body (MM) | 800.0 x 1345.0 x 680.0 |
| Chamber Volume | 111 Litres |
| Volume (cu.ft) | 26.5 ft³ |
| Power Load | 20.25 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 243.4 kg |
| Chamber Shape | Rectangular - tall |
This furnace is designed to combust materials completely, leaving behind only inorganic ash, typically for analytical or disposal purposes. Operating around 600°C, it provides sufficient heat to oxidize all organic matter. The working principle is based on controlled combustion within a chamber, often with air flow regulation to ensure complete burnout. Its purpose is to determine the inorganic content of samples (like coal, soil, or waste) or to reduce biological waste volume safely. Commonly found in laboratories, wastewater treatment plants, and facilities handling hazardous materials, it serves critical analysis and waste management functions.
Trutherm manufactures 900 Degree Celsius (°C) Ash Furnace 390 x 730 x 390 MM Chamber for buyers who search by exact machine type, chamber size and 900°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 390 x 730 x 390 MM chamber with usable chamber volume of 111 litre, approximate power load of 19.4 kW, rectangular - tall 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.
Equivalent chamber references: 390 x 730 x 390 MM, 39 x 73 x 39 CM and 15 x 29 x 15 INCH. Buyers searching for 900 Degree Celsius Ash Furnace 390 x 730 x 390 MM chamber; 900°C Ash Furnace 390 x 730 x 390 MM; 900 Degree Celsius Ash Furnace 39 x 73 x 39 CM chamber; 900°C Ash Furnace 39 x 73 x 39 CM; 900 Degree Celsius Ash Furnace 15 x 29 x 15 INCH chamber; 900°C Ash Furnace 15 x 29 x 15 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
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.