| Category | Muffle Furnace |
| Model | LOI Furnace |
| Max Temperature | 1300°C (2372°F) |
| Working Temperature | 1200°C |
| Thermocouple Type | S (Platinum-10% Rhodium) |
| Thermocouple Details | Platinum sheath, 8mm diameter, Type S, Tolerance Class 2, 0 to +1550°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 |
| Insulation Material | Ceramic Fibre Board (HP Grade, 1430°C rated) |
| Insulation Thickness | 125 mm |
| Chamber (MM) | 800 x 405 x 405 |
| Outer Body (MM) | 1210.0 x 1020.0 x 685.0 |
| Chamber Volume | 131.2 Litres |
| Volume (cu.ft) | 30 ft³ |
| Power Load | 20.8 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 270.44 kg |
| Chamber Shape | Rectangular - wide |
| Body Material | MS (Mild Steel) |
| Body Paint Type | Liquid Painting |
| Temperature Controller | PID On/Off Controller |
| Safety Device | MCB |
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.
Trutherm manufactures 1300 Degree Celsius (°C) LOI Furnace 800 x 405 x 405 MM Chamber for buyers who search by exact machine type, chamber size and 1300°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 800 x 405 x 405 MM chamber with usable chamber volume of 131.2 litre, approximate power load of 20.8 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: 800 x 405 x 405 MM, 80 x 41 x 41 CM and 32 x 16 x 16 INCH. Buyers searching for 1300°C LOI Furnace 800 x 405 x 405 MM; LOI Furnace 1300°C 800 x 405 x 405 MM; LOI Furnace 800 x 405 x 405 MM 1300°C; 800 x 405 x 405 MM 1300°C LOI Furnace; 1300 Degree LOI Furnace 800 x 405 x 405 MM; LOI Furnace 1300 Degree 800 x 405 x 405 MM 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.