MUFUH High-Temperature Muffle Furnace 1400 °C, 4–18 L

COLO.Science · Heating & Thermal Processing · Muffle furnaces

MUFUH 1400 °C muffle furnace — silicon carbide heating, side-sliding door, 4 to 18 L

The MUFUH 1400 °C muffle furnace series is a range of bench-top high-temperature furnaces with an energy-saving polycrystalline mullite fibre chamber, silicon carbide heating rods and a digital PID controller with fuzzy logic and self-tuning. The furnace works continuously between 1000 and 1300 °C, heats at up to 20 °C/min and holds the set temperature within ±1 °C. A side-sliding door keeps the space in front of the furnace free for loading crucibles, and the heating switches off as soon as the door opens. Three chamber sizes — 4, 13 and 18 L — cover sintering, calcination, fusion, glass and ceramic work and heat treatment above the range of a 1200 °C furnace.

One furnace series for sintering, calcination and heat treatment up to 1400 °C

Work above 1100 °C asks more of a furnace than routine ashing: sintering of ceramics and powders, calcination, fusion and heat treatment of tool steels need a temperature that is held for hours, not reached for a moment. The MUFUH 1400 °C muffle furnace is built for that work, with silicon carbide heating rods designed for continuous use between 1000 and 1300 °C. The polycrystalline mullite fibre chamber has a low thermal mass, so it heats quickly and uses less energy than a brick-lined furnace, and the double shell with an air gap keeps the housing cooler on the bench.

Key characteristics

• Maximum temperature 1400 °C, recommended working range 1000–1300 °C.
• Control accuracy ±1 °C, heating rate up to 20 °C/min.
• Polycrystalline mullite fibre chamber — energy-saving insulation.
• Digital PID controller with fuzzy logic, self-tuning and parameter memory.
• Side-sliding door on a lever-and-spring mechanism.
• Safety — heating cut-off on door opening, over-temperature and leakage protection.

Suitable for

• Ceramics and materials laboratories — sintering and calcination of ceramics, powders and catalysts.
• Building materials, coal, metallurgy and geology laboratories — quality testing and thermochemical analysis.
• Analytical laboratories — fusion and high-temperature decomposition steps.
• Metal workshops and material laboratories — annealing, hardening and tempering of metal parts and tool steels.
• Teaching and research laboratories — materials science, glass and ceramic work.

Why a 1400 °C muffle furnace with silicon carbide heating and a mullite fibre chamber

According to the manufacturer, the polycrystalline mullite fibre insulation needs more than 60 % less energy than a brick-lined furnace of the same size. In the MUFUH 1400 °C muffle furnace the light lining heats and cools faster, so a working day holds more runs and the furnace is not left on for hours to warm up. Silicon carbide heating rods carry the furnace through long holding times in the 1000–1300 °C range, where alloy-wire furnaces are used only for short periods.

Side-sliding door and door safety switch

On the MUFUH 1400 °C muffle furnace the door slides to the side on a lever-and-spring mechanism instead of swinging down or out. Crucibles are loaded from the front with tongs, and no hot door leaf stands in the way. A door switch cuts off the heating as soon as the door opens, which protects the operator and the heating elements.

Models and product codes

The MUFUH 1400 °C muffle furnace series has three chamber sizes. The 4 L model runs on 220 V single-phase; the 13 and 18 L models need a 380 V three-phase connection. Choose the size by the number and size of crucibles per run, and quote and order with the COLO product code.

MUFUH13 and MUFUH18 need a three-phase 380 V connection; the supply circuit is confirmed with COLO.Science before installation.

Installation, qualification and calibration

A MUFUH 1400 °C muffle furnace needs a stable, non-combustible bench, free space around the housing and ventilation — under an extraction or in a ventilated room when samples release fumes. For a long service life the furnace is used continuously in the 1000–1300 °C range, and at 1400 °C for short periods.

For regulated laboratories COLO.Science installs the furnace and carries out installation and operational qualification (IQ/OQ) with protocols. The chamber temperature can be checked and calibrated against a reference thermometer placed in the chamber.

Standard delivery

• MUFUH 1400 °C muffle furnace of the selected size with mullite fibre chamber and digital PID controller fitted.
• Instruction manual.

Crucibles, installation, IQ/OQ and calibration are quoted separately. The delivered configuration for a specific order is the one confirmed in the COLO.Science quotation.

Knowledge base

COLO.Science — methods, applications and practical notes for laboratory equipment.

Selection guide

• A few crucibles or small parts, method development or teaching? MUFUH4, 4 L, on 220 V.
• Routine series and longer parts? MUFUH13, 13 L, chamber depth 400 mm, on 380 V three-phase.
• Large series or long work pieces? MUFUH18, 18 L, chamber depth 500 mm, on 380 V three-phase.
• Work up to 1100 °C, ashing and loss on ignition? The MUFU-CA series, 1200 °C, is the economical choice.
• Housing in a GMP clean area? The stainless steel series MUFU-A·S.
• Work above 1300 °C? The MUFU-T16 series reaches 1600 °C and the MUFU-T17 series 1700 °C.
• GMP laboratory? Add installation, IQ/OQ and temperature calibration to the quotation.

Configuration notice

This page is provided for orientation and product selection. It does not replace the binding specification, the delivered configuration, the validation protocol or the acceptance criteria confirmed in the official COLO.Science quotation, proforma invoice or order confirmation. Confirm the chamber size, the supply voltage and any qualification or calibration requirement of the MUFUH 1400 °C muffle furnace for the specific order. B2B prices are quoted net, excluding VAT.

Sales and support for international customers

COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.

Need help choosing the chamber size?

Send the method or SOP — sintering, calcination or heat treatment — the maximum temperature, the number of crucibles per run and the supply available at the site. COLO.Science will confirm the size of the MUFUH 1400 °C muffle furnace, the qualification package and the delivery time.