Muffle Furnace

High-temperature laboratory furnace for metal, ceramic, food, jewelry, and dentistry applications. Features uniform heat distribution with aluminum oxide fire brick interior and minimised outer surface temperatures.

Ash content and high-temperature treatment up to 1,000 °C

A muffle furnace heats samples in a closed chamber to burn off organic material, leaving the inorganic residue — the basis of ash-content and filler-content tests on plastics, food and raw materials. Alarge muffle furnaces reach 250–1,000 °C with ±1 °C thermostat accuracy, an aluminium-oxide firebrick interior and ceramic insulation for even heat and a cool outer surface. Capacities from 2 to 12 litres cover small analytical labs as well as heat-treatment work in metal, ceramic, jewellery and dental applications.

• Temperature range: 250–1,000°C
• Capacity options: 2 L, 4 L, 7 L, 10 L, 12 L
• Thermostat accuracy: ±1°C
• Heating power: 2,500 W (AC 220V, 50/60 Hz)
• Aluminum oxide fire brick interior
• Ceramic insulation
• Electronic thermostat with digital display
• Ni-CrNi thermoelement sensor

Standards

• EN 12697-1-C — Bituminous mixtures — determination of bitumen content
• EN 13108 — Bituminous mixtures — material specifications

Frequently Asked Questions

What is an ash (muffle) furnace used for?

To determine ash or filler content by burning off the organic part of a sample, and for heat treatment, pre-treatment and sintering of metal and ceramic samples.

What temperature range and accuracy does it have?

250 °C to 1,000 °C, with ±1 °C thermostat accuracy and about ±10 °C uniformity inside the chamber.

Which sizes are available?

2, 4, 7, 10 and 12 litres, all with 2,500 W heating power on AC 220 V.

How is an ash furnace different from a laboratory oven?

Ovens work at lower temperatures (typically up to about 250–300 °C) for drying, conditioning and sterilisation; an ash furnace reaches much higher temperatures for decomposition and ash determination.

Thermal Analysis Systems