| Category | Muffle Furnace |
| Model | Biscuit Firing Furnace |
| Max Temperature | 1000°C (1832°F) |
| Working Temperature | 900°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | 6mm diameter, Type N, Tolerance Class 2, 0 to +1100°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) | 325 x 645 x 325 |
| Outer Body (MM) | 740.0 x 1250.0 x 600.0 |
| Chamber Volume | 68.1 Litres |
| Volume (cu.ft) | 20.1 ft³ |
| Power Load | 15.31 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 189.03 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 325 x 645 x 325 MM chamber with usable chamber volume of 68.1 litre, approximate power load of 15.9 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: 325 x 645 x 325 MM, 33 x 65 x 33 CM and 13 x 25 x 13 INCH. Buyers searching for 1000 Degree Celsius Biscuit Firing Furnace 325 x 645 x 325 MM chamber; 1000°C Biscuit Firing Furnace 325 x 645 x 325 MM; 1000 Degree Celsius Biscuit Firing Furnace 33 x 65 x 33 CM chamber; 1000°C Biscuit Firing Furnace 33 x 65 x 33 CM; 1000 Degree Celsius Biscuit Firing Furnace 13 x 25 x 13 INCH chamber; 1000°C Biscuit Firing Furnace 13 x 25 x 13 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1000 Degree Celsius (°C) Biscuit Firing Furnace 325 x 645 x 325 MM Chamber for buyers who search by exact machine type, chamber size and 1000°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.