Description

The Thermo Scientific Thermolyne benchtop muffle furnace is designed for laboratories performing thermal treatment up to 1200 °C on mid-sized sample volumes. Specifically, this model combines a 5.8 liter working chamber with stability of ± 0.2 °C and uniformity of ± 3.6 °C at 1000 °C. Furthermore, this is the only Thermolyne benchtop model with a choice of four PID controllers, allowing you to match the unit precisely to the complexity of your process. In addition, thermal-efficient ceramic insulation keeps energy consumption low, while two open coil heating elements on the chamber sides deliver fast heatup.

Four controller choices for your process

Specifically, you choose from four PID microprocessor controllers depending on what your process requires:

F48010-33 (A1): Digital single setpoint control with dual display. Suited for isothermal processes at one fixed temperature. No mechanical OTP relay.
F48020-33 (B1): Single setpoint with ramp to setpoint and dwell function. Moreover, this model includes a mechanical OTP relay for over-temperature protection.
F48020-33-80 (C1): Programmable with 1 stored program of 8 segments, including OTP relay. As a result, more complex thermal profiles with multiple steps become possible.
F48050-33 (D1): Programmable with 5 stored programs of 16 segments each, plus RS-232 communications and OTP relay. In addition, suited for remote monitoring and data logging from a PC.

Notably, all four variants feature a dual display that simultaneously shows actual temperature and setpoint, in either °C or °F.

Applications in laboratory and industry

Specifically, this laboratory muffle furnace is used for a wide range of thermal processes up to 1200 °C, such as:

Ashing of organic samples for gravimetric analysis
Determination of volatile and suspended solids
Sintering and bonding processes for ceramics and metal
Heat treatment, annealing, and tempering
Pyrolysis and calibration
Thermal expansion and viscosity testing

Furthermore, this model is used in pharmaceutical development, materials research, and the food industry for combustion analysis of additives and residues.

Safety and operation

Moreover, this muffle furnace features multiple safety layers. Specifically, the door switch interrupts power to the heating elements when the door opens. Furthermore, thermocouple break protection cuts heating when a sensor fails, which prevents uncontrolled temperature rise. In addition, the built-in vent port removes fumes and moisture directly, extending the life of the heating elements and the unit. Notably, a 0.8 cm diameter port at the rear of the chamber allows independent temperature measurement.

Standard accessories and optional extensions

Each benchtop muffle furnace ships with a Type K thermocouple, power cord with CEE 7/7 plug, hearth tray (PH480X1), and ceramic shelf (SH480X1). As a result, the ceramic shelf doubles load capacity by allowing two sample levels. Furthermore, the hearth tray protects the chamber bottom from damage caused by spilled materials. In addition, an optional stainless steel exhaust kit (AY408X1A, 2.5 inch ID, 5 ft length) is available for connection to an exhaust system.

Brochure: Thermo Scientific Furnaces brochure (EN)

Specifications

Feature	Specification
Type	Benchtop muffle furnace
Capacity	5.8 liter (0.2 cu. ft.)
Temperature range	100 to 1200 °C
Stability at 1000 °C	± 0.2 °C
Uniformity at 1000 °C	± 3.6 °C
Heating elements	Two open coil elements, chamber sides
Insulation	Thermal-efficient ceramic insulation
Controller options	4 PID controllers (single setpoint to programmable RS-232)
Display	Dual display actual temperature and setpoint
Safety	Door switch, thermocouple break protection
Monitoring port	0.8 cm diameter, rear of chamber
Thermocouple	Type K
Voltage	240V, 50/60 Hz
Power	1560 W
Current	6.5 A
Plug	CEE 7/7 EU
Certification	CE
Interior dimensions (W × D × H)	18 × 25 × 13 cm
Exterior dimensions (W × D × H)	34 × 50 × 48 cm
Shipping weight	27.2 kg
Included as standard	Type K thermocouple, power cord, hearth tray (PH480X1), ceramic shelf (SH480X1)
Optional accessories	Stainless steel exhaust kit AY408X1A (2.5 inch ID, 5 ft length)

Model overview

SKU	Controller	Programs	OTP relay	RS-232
F48010-33	Single setpoint (A1)	None	No	No
F48020-33	Single setpoint with ramp (B1)	None	Yes	No
F48020-33-80	Programmable (C1)	1 program, 8 segments	Yes	No
F48050-33	Programmable (D1)	5 programs, 16 segments	Yes	Yes

Thermo Scientific Thermolyne Benchtop Muffle Furnace 1200 °C

Article no.: F48010-33Delivery timei

The Thermo Scientific Thermolyne laboratory muffle furnace provides a 5.8 liter working chamber for thermal sample treatment up to 1200 °C. Specifically, four PID controllers are available, from simple single setpoint to programmable with RS-232 communications. Furthermore, two open coil heating elements on the chamber sides deliver fast heatup, while ceramic insulation keeps energy consumption low. In addition, the included ceramic shelf doubles load capacity by allowing two sample levels.

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5.8 liter chamber up to 1200 °C

Four controller choices: single setpoint to programmable RS-232

Two open coil heating elements for fast heatup

Built-in vent port removes fumes and moisture directly

Ceramic shelf doubles the load capacity

📐Dimensions (L×W×H)50 × 34 × 48 cm

⚖️Weight27.2 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 used for ashing, sintering, gravimetric analysis, heat treatment, and pyrolysis at temperatures up to 1200 °C.

Which of the four controllers should I choose?

Specifically, the choice depends on the complexity of your process. For isothermal processes at one fixed temperature, the F48010-33 (A1) suffices. By contrast, the F48020-33 (B1) provides a controlled heatup curve with a hold period, ideal when ramping is required. Moreover, the F48020-33-80 (C1) delivers a programmable profile of 8 segments for applications with multiple temperature steps. In addition, the F48050-33 (D1) is the choice when you want to store 5 programs or log data via RS-232 communications.

What is the difference between this muffle furnace and the smaller Thermolyne benchtop models?

The small Thermolyne benchtop muffle furnace offers 1.3 or 2.1 liter and reaches 1100 °C with only single setpoint control. By contrast, this laboratory muffle furnace offers 5.8 liter and 1200 °C, with a choice of four controllers. Moreover, uniformity is better (± 3.6 °C versus ± 5.0 to ± 7.8 °C at 1000 °C). As a result, this model fits applications that require higher temperatures, larger samples, or more complex temperature profiles.

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

A muffle furnace operates up to 1200 °C and is used for ashing, sintering, and thermal conversion of samples. By contrast, a drying oven works up to approximately 250 or 300 °C, for drying glassware, samples, or materials. As a result, a muffle furnace is required when organic substances must combust fully or when materials undergo thermal transformation, while a drying oven suffices for routine drying and curing.

Which accessories are included?

Each benchtop muffle furnace ships with a Type K thermocouple, power cord with CEE 7/7 plug, hearth tray (PH480X1), and ceramic shelf (SH480X1). Specifically, the ceramic shelf doubles load capacity by allowing two sample levels. In addition, an optional stainless steel exhaust kit (AY408X1A, 2.5 inch ID, 5 ft length) is available for connection to an exhaust system.