| Category | Muffle Furnace |
| Model | Biscuit Firing Furnace |
| Max Temperature | 900°C (1652°F) |
| Working Temperature | 800°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | 6mm diameter, Type K, Tolerance Class 2, -40 to +900°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) | 705 x 885 x 705 |
| Outer Body (MM) | 1105.0 x 1495.0 x 985.0 |
| Chamber Volume | 440 Litres |
| Volume (cu.ft) | 58.6 ft³ |
| Power Load | 33.67 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 526.03 kg |
| Chamber Shape | Rectangular - tall |
This furnace, also called a bisque firing kiln, conducts the initial firing of ceramic ware to transform shaped clay into a durable, porous bisque. Operating around 900°C, it drives off physical and chemical water and begins vitrification. The working principle involves a controlled ramp-up of temperature to prevent steam pressure from cracking the ware, followed by a soak period and controlled cooling. Its purpose is to harden the clay body so it can withstand handling and the absorption of liquid glaze before the final firing. It is a fundamental first step in all professional and studio pottery production.
This configuration is suitable when the sample load must fit a 705 x 885 x 705 MM chamber with usable chamber volume of 440 litre, approximate power load of 33.9 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: 705 x 885 x 705 MM, 71 x 89 x 71 CM and 28 x 35 x 28 INCH. Buyers searching for 900 Degree Celsius Biscuit Firing Furnace 705 x 885 x 705 MM chamber; 900°C Biscuit Firing Furnace 705 x 885 x 705 MM; 900 Degree Celsius Biscuit Firing Furnace 71 x 89 x 71 CM chamber; 900°C Biscuit Firing Furnace 71 x 89 x 71 CM; 900 Degree Celsius Biscuit Firing Furnace 28 x 35 x 28 INCH chamber; 900°C Biscuit Firing Furnace 28 x 35 x 28 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 900 Degree Celsius (°C) Biscuit Firing Furnace 705 x 885 x 705 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.
A muffle furnace is usually the first furnace a lab installs, since it covers the broadest share of everyday heating, drying and ashing tasks before more specialised equipment is added.
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.
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.