Thermolyne small benchtop muffle furnaces

Description

The Thermo Scientific Thermolyne small benchtop muffle furnace is designed for laboratories seeking a compact, reliable unit for ashing, drying, and thermal sample preparation up to 1100 °C. Specifically, this model combines fast heatup with low energy consumption, thanks to ceramic fiber insulation and an efficient element configuration. Furthermore, the unit suits both routine applications and educational settings where safety and simplicity are essential.

Two capacities for different sample volumes

The small muffle furnace is available in two configurations. Specifically, the FB1310M-33 offers a 1.3 liter working chamber, while the FB1410M-33 provides a more spacious 2.1 liter for slightly larger samples. In addition, uniformity differs slightly: the 1.3 liter variant achieves ± 7.8 °C at 1000 °C, and the 2.1 liter variant ± 5.0 °C. Both models feature digital single setpoint control and a dual display showing actual temperature and setpoint simultaneously.

Laboratory applications

Specifically, this small muffle furnace is used in laboratories for the following processes:

Ashing of organic samples for gravimetric analysis
Drying and annealing at elevated temperature
Thermal preparation of ceramic and metallurgical samples
Calibration and routine quality control
Education and demonstration purposes

Notably, this model is also used in the food industry for combustion analysis of smaller sample quantities. Furthermore, its compact footprint makes it suitable for labs with limited bench space.

Safety and standard accessories

Moreover, the muffle furnace features thermocouple break protection that interrupts power to the heating elements upon sensor failure, which prevents uncontrolled temperature rise. Furthermore, the door switch stops heating when the door opens. In addition, a 0.95 cm diameter port at the rear of the chamber accommodates independent temperature measurement. Standard accessories include a Type K thermocouple, power cord with CEE 7/7 plug, and a hearth plate to protect the chamber bottom.

Brochure: Thermo Scientific Furnaces brochure (EN)

Specifications

Feature	Specification
Type	Compact benchtop muffle furnace
Capacity	1.3 liter (FB1310M-33) or 2.1 liter (FB1410M-33)
Temperature range	100 to 1100 °C
Stability at 1000 °C	± 0.3 °C (1.3 L) / ± 0.5 °C (2.1 L)
Uniformity at 1000 °C	± 7.8 °C (1.3 L) / ± 5.0 °C (2.1 L)
Heating elements	Embedded in top and both sides
Controller	Digital single setpoint, PID microprocessor
Display	Dual display actual temperature and setpoint
Safety	Thermocouple break protection, door switch
Monitoring port	0.95 cm diameter, rear of chamber
Thermocouple	Type K
Door design	Drop-down door, doubles as loading shelf
Voltage	240V, 50/60 Hz
Plug	CEE 7/7 EU
Certification	CE
Included as standard	Type K thermocouple, power cord, hearth plate
Optional accessories	Hearth tray PH44X1 (for FB1310M) or PH48X1 (for FB1410M)

Model overview

SKU	Capacity	Power	Current	Dimensions (W×D×H cm)	Weight
FB1310M-33	1.3 liter	1060 W	4.4 A	23 × 33 × 36	9 kg
FB1410M-33	2.1 liter	1520 W	6.3 A	25 × 40 × 37	12.7 kg

Thermo Scientific Thermolyne Small Benchtop Muffle Furnace

Article no.: FB1310M-33Delivery timei

The Thermo Scientific Thermolyne small benchtop muffle furnace is a compact unit for laboratories working up to 1100 °C, available in 1.3 and 2.1 liter capacities. Specifically, the ceramic fiber insulation enables fast heatup while reducing energy consumption. Furthermore, embedded heating elements on the top and both sides deliver uniform temperature distribution. In addition, the drop-down door doubles as a loading shelf, ideal for placing and removing samples.

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Up to 1100 °C with ceramic fiber insulation

Two capacities: 1.3 or 2.1 liter

Fast heatup and low energy consumption

Drop-down door doubles as loading shelf

Thermocouple break protection and door switch standard

📦Capacity1.3 liter

📐Dimensions (L×W×H)33 × 23 × 36 cm

⚖️Weight9 kg

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What is a muffle furnace and what is it used for?

A muffle furnace is a laboratory furnace that heats samples to high temperatures inside an insulated combustion chamber. Specifically, the sample stays isolated from any direct flame or heating source, enabling clean thermal treatment. Furthermore, this type of furnace is suited for ashing, drying, gravimetric analysis, and thermal sample preparation up to 1100 °C.

Which capacity should I choose: 1.3 or 2.1 liter?

The FB1310M-33 (1.3 liter) suffices for smaller samples and routine analyses. By contrast, the FB1410M-33 (2.1 liter) offers more room for larger samples or multiple crucibles at once. Moreover, the 2.1 liter variant delivers better uniformity (± 5.0 °C versus ± 7.8 °C at 1000 °C), which can be an advantage for analyses with strict uniformity requirements.

What is the difference between a muffle furnace and a drying oven?

A muffle furnace operates up to 1100 °C or higher and is used for ashing, sintering, and thermal treatment. By contrast, a drying oven works up to approximately 250 or 300 °C, for drying glassware and samples. As a result, a muffle furnace is required when organic substances must combust fully, while a drying oven suffices for routine drying.

What safety features does this muffle furnace have?

Standard features include thermocouple break protection and a door switch. Specifically, thermocouple break protection interrupts heating upon sensor failure, and the door switch cuts power when the door opens. In addition, the drop-down door serves as a safe loading shelf, preventing hot samples from coming into direct contact with the work surface.

Which accessories are included?

Each small muffle furnace ships with a Type K thermocouple, power cord with CEE 7/7 plug, and a hearth plate to protect the chamber bottom. In addition, optional hearth trays are available (PH44X1 for the FB1310M, PH48X1 for the FB1410M) for extra protection and easier handling when samples spill.