| Category | Muffle Furnace |
| Model | Gem Heat Treatment Furnace |
| Max Temperature | 1200°C (2192°F) |
| Working Temperature | 1100°C |
| Thermocouple Type | S (Platinum-10% Rhodium) |
| Thermocouple Details | 6mm diameter, Type S, Tolerance Class 2, 0 to +1450°C range, High purity alumina insulation, Platinum sheath |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| Chamber (MM) | 300 x 300 x 450 |
| Outer Body (MM) | 715.0 x 910.0 x 735.0 |
| Chamber Volume | 40.5 Litres |
| Volume (cu.ft) | 16.9 ft³ |
| Power Load | 13.54 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 149.92 kg |
| Chamber Shape | Square |
This is a more specific name for a furnace dedicated to the thermal enhancement of gemstones. Operating at temperatures like 600°C, it is designed with the precise controls needed for valuable materials. The working principle often includes programmable cycles and atmosphere control to achieve specific color changes (e.g., turning pale sapphires blue or making zircon stones colorless). Its purpose is to permanently improve the aesthetic properties of natural gems, a standard and accepted practice in the jewelry industry when disclosed.
This configuration is suitable when the sample load must fit a 300 x 300 x 450 MM chamber with usable chamber volume of 40.5 litre, approximate power load of 12.9 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: 300 x 300 x 450 MM, 30 x 30 x 45 CM and 12 x 12 x 18 INCH. Buyers searching for 1200 Degree Celsius Gem Heat Treatment Furnace 300 x 300 x 450 MM chamber; 1200°C Gem Heat Treatment Furnace 300 x 300 x 450 MM; 1200 Degree Celsius Gem Heat Treatment Furnace 30 x 30 x 45 CM chamber; 1200°C Gem Heat Treatment Furnace 30 x 30 x 45 CM; 1200 Degree Celsius Gem Heat Treatment Furnace 12 x 12 x 18 INCH chamber; 1200°C Gem Heat Treatment Furnace 12 x 12 x 18 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1200 Degree Celsius (°C) Gem Heat Treatment Furnace 300 x 300 x 450 MM Chamber for buyers who search by exact machine type, chamber size and 1200°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.