| Category | Muffle Furnace |
| Model | LOI Furnace |
| Max Temperature | 1100°C (2012°F) |
| Working Temperature | 1000°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | Inconel 601 sheath, 6mm diameter, Type N, Tolerance Class 2, 0 to +1200°C range, MgO insulated mineral |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Max temp: 1425°C, Superior cyclic performance, FeCrAl alloy with rare earth elements |
| Chamber (MM) | 890 x 660 x 660 |
| Outer Body (MM) | 1300.0 x 1260.0 x 950.0 |
| Chamber Volume | 387.7 Litres |
| Volume (cu.ft) | 55.7 ft³ |
| Power Load | 30.9 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 484.05 kg |
| Chamber Shape | Rectangular - wide |
LOI stands for "Loss on Ignition." This furnace is specifically used to heat a sample to a high temperature (typically 1000°C) to drive off volatile components like water, carbonates, and organic matter. The working principle involves weighing a sample before and after ignition in a controlled atmosphere (usually air); the weight loss percentage is the LOI. Its purpose is an essential analytical technique in ceramics, geology, soil science, and cement manufacturing to determine the composition and quality of raw materials and products.
This configuration is suitable when the sample load must fit a 890 x 660 x 660 MM chamber with usable chamber volume of 387.7 litre, approximate power load of 32.2 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: 890 x 660 x 660 MM, 89 x 66 x 66 CM and 35 x 26 x 26 INCH. Buyers searching for 1100°C LOI Furnace 890 x 660 x 660 MM; LOI Furnace 1100°C 890 x 660 x 660 MM; LOI Furnace 890 x 660 x 660 MM 1100°C; 890 x 660 x 660 MM 1100°C LOI Furnace; 1100 Degree LOI Furnace 890 x 660 x 660 MM; LOI Furnace 1100 Degree 890 x 660 x 660 MM can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1100 Degree Celsius (°C) LOI Furnace 890 x 660 x 660 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.
Routine QC and teaching labs value a muffle furnace precisely because one unit can cover several standard test methods without dedicated process-specific tooling.
Uniform chamber heating and a simple door-loading design make a muffle furnace straightforward to standardise across multiple operators and shifts.
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.