| 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) | 880 x 880 x 900 |
| Outer Body (MM) | 1285.0 x 1480.0 x 1175.0 |
| Chamber Volume | 697 Litres |
| Volume (cu.ft) | 81.8 ft³ |
| Power Load | 39.67 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 660.62 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 880 x 880 x 900 MM chamber with usable chamber volume of 697 litre, approximate power load of 40.9 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: 880 x 880 x 900 MM, 88 x 88 x 90 CM and 35 x 35 x 36 INCH. Buyers searching for 1200 Degree Celsius Gem Heat Treatment Furnace 880 x 880 x 900 MM chamber; 1200°C Gem Heat Treatment Furnace 880 x 880 x 900 MM; 1200 Degree Celsius Gem Heat Treatment Furnace 88 x 88 x 90 CM chamber; 1200°C Gem Heat Treatment Furnace 88 x 88 x 90 CM; 1200 Degree Celsius Gem Heat Treatment Furnace 35 x 35 x 36 INCH chamber; 1200°C Gem Heat Treatment 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 1200 Degree Celsius (°C) Gem Heat Treatment Furnace 880 x 880 x 900 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.
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.
Routine QC and teaching labs value a muffle furnace precisely because one unit can cover several standard test methods without dedicated process-specific tooling.
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.