| Category | Muffle Furnace |
| Model | Glass Annealer |
| Max Temperature | 900°C (1652°F) |
| Working Temperature | 800°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | MgO insulated mineral, Inconel 600 sheath, 6mm diameter, Type K, Tolerance Class 2, -40 to +900°C range |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | FeCrAl alloy with rare earth elements, Max temp: 1425°C, Superior cyclic performance |
| Chamber (MM) | 705 × 705 × 880 |
| Outer Body (MM) | 1106.0 × 1303.0 × 1156.0 |
| Chamber Volume | 437.4 Litres |
| Volume (cu.ft) | 60.9 ft³ |
| Power Load | 34.37 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 521.76 kg |
| Chamber Shape | Square |
This furnace is specifically for the controlled, slow cooling of glass products to relieve internal stresses introduced during forming (like blowing or casting). Operating at annealing temperatures (e.g., 550°C), it holds the glass at its annealing point before enacting a carefully programmed cool-down. The working principle uses precise temperature zoning and control to ensure all parts of the glass object cool at the same rate. Its purpose is critical for producing stable, strong glassware that won't crack from internal stress; it is used after any major glass-forming process.
Equivalent chamber references: 705 × 705 × 880 MM, 71 × 71 × 88 CM and 28 × 28 × 35 INCH. Buyers searching for 900 Degree Celsius Glass Annealer 705 × 705 × 880 MM chamber; 900°C Glass Annealer 705 × 705 × 880 MM; 900 Degree Celsius Glass Annealer 71 × 71 × 88 CM chamber; 900°C Glass Annealer 71 × 71 × 88 CM; 900 Degree Celsius Glass Annealer 28 × 28 × 35 INCH chamber; 900°C Glass Annealer 28 × 28 × 35 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 900 Degree Celsius (900°C) Glass Annealer 705 × 705 × 880 MM Chamber for buyers who search by exact machine type, chamber size and 900°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 705 × 705 × 880 MM chamber with usable chamber volume of 437.4 litre, approximate power load of 33.8 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.
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.