| Category | Muffle Furnace |
| Model | Gemstone Heat Treatment Furnace |
| Max Temperature | 800°C (1472°F) |
| Working Temperature | 700°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | 4mm diameter, Type K, Tolerance Class 1, -40 to +750°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) | 825 x 450 x 450 |
| Outer Body (MM) | 1240.0 x 1065.0 x 730.0 |
| Chamber Volume | 167.1 Litres |
| Volume (cu.ft) | 34.5 ft³ |
| Power Load | 22.82 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 310.13 kg |
| Chamber Shape | Rectangular - wide |
Functionally identical to the Gem Heat Treatment Furnace, this unit thermally enhances gemstones. Operating around 600°C, its purpose is to diffuse impurities, heal fractures, or change color centers through controlled heating. The working principle requires extremely stable temperature control and often operates in batches. It is a key piece of capital equipment for gemstone wholesalers and treatment facilities, allowing them to consistently upgrade rough or low-grade gem material to meet market demands for color and clarity.
This configuration is suitable when the sample load must fit a 825 x 450 x 450 MM chamber with usable chamber volume of 167.1 litre, approximate power load of 22.9 kW, rectangular - wide 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: 825 x 450 x 450 MM, 83 x 45 x 45 CM and 33 x 18 x 18 INCH. Buyers searching for 800 Degree Celsius Gemstone Heat Treatment Furnace 825 x 450 x 450 MM chamber; 800°C Gemstone Heat Treatment Furnace 825 x 450 x 450 MM; 800 Degree Celsius Gemstone Heat Treatment Furnace 83 x 45 x 45 CM chamber; 800°C Gemstone Heat Treatment Furnace 83 x 45 x 45 CM; 800 Degree Celsius Gemstone Heat Treatment Furnace 33 x 18 x 18 INCH chamber; 800°C Gemstone Heat Treatment Furnace 33 x 18 x 18 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 800 Degree Celsius (°C) Gemstone Heat Treatment Furnace 825 x 450 x 450 MM Chamber for buyers who search by exact machine type, chamber size and 800°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.