| 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) | 885 x 885 x 900 |
| Outer Body (MM) | 1285.0 x 1490.0 x 1175.0 |
| Chamber Volume | 704.9 Litres |
| Volume (cu.ft) | 81.8 ft³ |
| Power Load | 41.91 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 655.18 kg |
| Chamber Shape | Square |
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 885 x 885 x 900 MM chamber with usable chamber volume of 704.9 litre, approximate power load of 41.1 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.
Equivalent chamber references: 885 x 885 x 900 MM, 89 x 89 x 90 CM and 35 x 35 x 36 INCH. Buyers searching for 900 Degree Celsius Biscuit Firing Furnace 885 x 885 x 900 MM chamber; 900°C Biscuit Firing Furnace 885 x 885 x 900 MM; 900 Degree Celsius Biscuit Firing Furnace 89 x 89 x 90 CM chamber; 900°C Biscuit Firing Furnace 89 x 89 x 90 CM; 900 Degree Celsius Biscuit Firing Furnace 35 x 35 x 36 INCH chamber; 900°C Biscuit Firing Furnace 35 x 35 x 36 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 885 x 885 x 900 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 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.