| 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) | 245 x 235 x 400 |
| Outer Body (MM) | 655.0 x 840.0 x 690.0 |
| Chamber Volume | 23 Litres |
| Volume (cu.ft) | 13.4 ft³ |
| Power Load | 9.79 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 107.52 kg |
| Chamber Shape | Square |
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.
Trutherm manufactures 800 Degree Celsius (°C) Gemstone Heat Treatment Furnace 245 x 235 x 400 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.
This configuration is suitable when the sample load must fit a 245 x 235 x 400 MM chamber with usable chamber volume of 23 litre, approximate power load of 10.2 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: 245 x 235 x 400 MM, 25 x 24 x 40 CM and 9 x 9 x 16 INCH. Buyers searching for 800 Degree Celsius Gemstone Heat Treatment Furnace 245 x 235 x 400 MM chamber; 800°C Gemstone Heat Treatment Furnace 245 x 235 x 400 MM; 800 Degree Celsius Gemstone Heat Treatment Furnace 25 x 24 x 40 CM chamber; 800°C Gemstone Heat Treatment Furnace 25 x 24 x 40 CM; 800 Degree Celsius Gemstone Heat Treatment Furnace 9 x 9 x 16 INCH chamber; 800°C Gemstone Heat Treatment Furnace 9 x 9 x 16 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Where sample volume and process type vary week to week, a general-purpose muffle furnace avoids the cost of maintaining several process-specific furnace types.
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.
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.