| Category | Muffle Furnace |
| Model | Glass Annealing Furnace |
| Max Temperature | 1100°C (2012°F) |
| Working Temperature | 1000°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | 6mm diameter, Type N, Tolerance Class 2, 0 to +1200°C range, MgO insulated mineral, Inconel 601 sheath |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| Chamber (MM) | 140 x 250 x 250 |
| Outer Body (MM) | 545.0 x 865.0 x 530.0 |
| Chamber Volume | 8.8 Litres |
| Volume (cu.ft) | 9.1 ft³ |
| Power Load | 6.71 kW |
| Power Supply | 220V, Single Phase |
| Gross Weight | 74.94 kg |
| Chamber Shape | Rectangular - tall |
Synonymous with a Glass Annealer, this furnace performs the annealing process on glass. Operating around 550°C, it heats already-formed glass to its annealing temperature and then controls the cooling cycle. The working principle involves a long, tunnel-like chamber with different temperature zones through which the glass travels on a belt, or a batch chamber with a programmable cool-down. Its purpose is to prevent residual stress that could cause spontaneous breakage, making it essential in the production of architectural glass, laboratory glassware, and art glass.
Trutherm manufactures 1100 Degree Celsius (°C) Glass Annealing Furnace 140 x 250 x 250 MM Chamber for buyers who search by exact machine type, chamber size and 1100°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 140 x 250 x 250 MM chamber with usable chamber volume of 8.8 litre, approximate power load of 6.9 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: 140 x 250 x 250 MM, 14 x 25 x 25 CM and 5 x 10 x 10 INCH. Buyers searching for 1100 Degree Celsius Glass Annealing Furnace 140 x 250 x 250 MM chamber; 1100°C Glass Annealing Furnace 140 x 250 x 250 MM; 1100 Degree Celsius Glass Annealing Furnace 14 x 25 x 25 CM chamber; 1100°C Glass Annealing Furnace 14 x 25 x 25 CM; 1100 Degree Celsius Glass Annealing Furnace 5 x 10 x 10 INCH chamber; 1100°C Glass Annealing Furnace 5 x 10 x 10 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
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.