| Category | Muffle Furnace |
| Model | LOI Furnace |
| Max Temperature | 1400°C (2552°F) |
| Working Temperature | 1300°C |
| Thermocouple Type | B (Platinum-30% Rhodium) |
| Thermocouple Details | Platinum-Rhodium alloy sheath, 8mm diameter, Type B, Tolerance Class 2, 200 to +1700°C range, High purity alumina insulation |
| Heating Element | Silicon Carbide (SiC) |
| Element Details | SiC heating elements, Max temp: 1600°C, High power density, Brittle material |
| Chamber (MM) | 420 x 420 x 800 |
| Outer Body (MM) | 830.0 x 1025.0 x 1080.0 |
| Chamber Volume | 141.1 Litres |
| Volume (cu.ft) | 33.7 ft³ |
| Power Load | 21.31 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 268.04 kg |
| Chamber Shape | Square |
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.
Equivalent chamber references: 420 x 420 x 800 MM, 42 x 42 x 80 CM and 16 x 16 x 32 INCH. Buyers searching for 1400 Degree Celsius LOI Furnace 420 x 420 x 800 MM chamber; 1400°C LOI Furnace 420 x 420 x 800 MM; 1400 Degree Celsius LOI Furnace 42 x 42 x 80 CM chamber; 1400°C LOI Furnace 42 x 42 x 80 CM; 1400 Degree Celsius LOI Furnace 16 x 16 x 32 INCH chamber; 1400°C LOI Furnace 16 x 16 x 32 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1400 Degree Celsius (°C) LOI Furnace 420 x 420 x 800 MM Chamber for buyers who search by exact machine type, chamber size and 1400°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 420 x 420 x 800 MM chamber with usable chamber volume of 141.1 litre, approximate power load of 21.4 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.
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.