Lab Furnaces

Deliver consistent results with a furnace you can depend on to attain your daily goals. Thermo Scientific Box and Tube Furnaces come in a wide range of offerings to accommodate ordinary and technical tasks alike, such as: temperature ranges up to 1200°C, temperature control options to meet your application needs, and embedded or open heating elements designed to keep samples safe while maintaining reliable temperature uniformity.

Choosing between a box furnace or a tube furnace for your laboratory

Box Furnaces

Used for processing larger samples or easy access to samples
Small, medium and large box furnaces available
Ashing applications in every industry and research laboratory
Attributes include variable density insulation, double shell cabinets, long-life heating elements and vertical, horizontal side swing or swing down doors

Tube Furnaces

Used for processing small samples or samples in an inert atmosphere
Single and three-zoned designs for precise temperature control. Three zone control helps enable different temperatures in each zone.
Materials testing, pyrolysis, and crystal growing applications
Some models offer split-hinge design for ease of tube changing

Discover a furnace for your application

View our quick application guide for choosing a furnace that is suitable for the workload you need. Choose from a variety of temperature control options, heating elements and furnace formats to meet your analytical requirements.

View application guide

Lab Box Furnaces

Typically used for processing larger samples or to easily place and access samples. We offer a versatile selection of small, medium, and large box furnaces suitable for a variety of industrial and laboratory applications. Advanced engineering and specialized construction techniques include variable density insulation, double shell cabinets, long-life heating elements and side-swing doors (vertical or horizontal) or swing down doors.

	Lindberg/Blue M LGO 1200°C Box Furnaces	Lindberg/Blue M Moldatherm Box furnaces	Thermolyne Largest Tabletop Muffle Furnaces	Thermolyne Benchtop Muffle Furnaces	Thermolyne Premium Large Muffle Furnaces	Thermolyne Small Benchtop Muffle Furnaces

Heat range	100 - 1200°C	100 - 1100°C	100 - 1093°C	100 - 1200°C	100 - 1200°C	100 - 1100°C
Available capacity	16.4 - 55.3 L	1.99 - 42.5 L	45 L	14 L	2 - 5.8 L	1.3 to 2.1 L
Heating elements	Embedded	Embedded	Embedded	Embedded	Open	Embedded

Lab Tube Furnaces

Tube furnaces are typically used for processing small samples or heating in an inert atmosphere. The single and three-zoned construction is designed to create precise temperature control. Three-zone control enables the user to select a different temperature in each zone (e.g. for gas applications or material experiments). Some models offer split-hinge design, which easily allows you to change the tube.

	Lindberg/Blue M 1200°C Split-Hinge Tube Furnaces*	Lindberg/Blue M 1100°C Tube Furnaces	Lindberg/Blue M Mini-Mite Tube Furnaces

Heat range	100 - 1200°C	100 - 1100°C	100 - 1100°C
Available capacity	30.5, 61, or 91.4 cm / 12, 24, or 36 in.	61 or 91.4 cm / 24 or 36 in.	30.5 cm / 12 in.
Heating elements	Open	Embedded	Open

Furnace accessories

	Description	Dimensions	Cat. no.
Thermolyne exhaust tubing kit
Thermolyne premium large muffle furnaces	Critical to operation - an appropriate exhaust must be installed with your furnace to remove smoke and gases produced during an ashing procedure. Simplify installation when you order this kit.	Kit includes tubing, brackets, and screws.	AY408X1A
Thermolyne largest tabletop muffle furnaces		Kit includes tubing, brackets, and screws.	AY408X1A
Lindberg/Blue M tube adapters/sleeves
Lindberg/Blue M 1100 °C tube furnaces* –STF55346 and STF55666 series models	Increase the flexibility of your applications with additional sized tub adapters. Tube adapters hold process tubes of a certain size in place to ensure the tubes don't contact the sides of the tube furnace, protecting the furnace heating elements.	3-in. adapter	59545
		3-in. adapter	59555
		4-in. adapter	59556
		Blank (solid) adapter	59549
Lindberg/Blue M 1200 °C split-hinge tube furnaces* – HTF55122, HTF55322, HTF55342, and HTF55347 series models		0.75-in adapter	59510
		1-in. adapter	59511
		Blank (solid) adapter	59519
		1-in. adapter	59521
		1.5-in. adapter	59522
		2-in. adapter	59523
		2.5-in. adapter	59524
		3-in. adapter	59525
		Blank (solid) adapter	59529

*Additional adapters may be available. Contact your local representative or customer support to order the following: adapters for Lindberg/Blue M 1100 °C furnace model STF55346: 1-in. (Cat. No. 59541TA); adapters for Lindberg/Blue M 1100 °C furnace model STF55666: 6-in. (Cat. No. 59558TA), blank (solid) adapter (Cat. No. 59559TA); and adapters for Lindberg/Blue M 1200 °C split-hinge furnace model HTF55667: 3-in. (Cat. No. 59535TA), 4-in. (Cat. No. 59536TA), 5-in. (Cat. No. 59537TA), 6-in. (Cat. No. 59538TA), blank (solid) adapter (Cat. No. 59539TA).

Replacement Parts

Replacement part	For use with	Description	Dimensions	Cat. no.
Hearth tray	F47900 Series	Hearth trays and hearth plates sit in the bottom of the furnace and protect the bottom heating element during operation.	15.2 x 14.3 x 0.95 cm./ 5.98 x 5.63 x 0.37 in.	PH479X1
Hearth tray	F80000 Series		25.4 x 19.3 x 0.95 cm. / 10 x 7.6 x 0.38 in.	PH480X1
Ceramic shelf	F80000 Series	Ceramic shelves expand interior usable sample space without interfering with max operation temperature.	17.4 x 17.3 x 1.2 cm. / 6.85 x 6.81 x 0.47 in.	SH480X1

Replacement part	Description	Dimensions	Cat. no
Crucible Tray	Order extra trays designed to custom configure your furnace. Trays hold crucibles of various sizes, meant to sit on shelves or hearth trays when in use.	32.4 x 25.4 x 17.1 cm. / 12.75 x 10 x 6.75 in.	TY408X2A
Hearth tray	Hearth trays and hearth plates sit in the bottom of the furnace and protect the bottom heating element during operation.	8.2 x 10.1 x 1.27 cm. / 3.3 x 4 x 0.5 in.	PHX1
Hearth tray		25.4 x 19.3 x 0.95 cm. / 10 x 7.6 x 0.38 in.	PH177X1
Stainless steel shelf	Stainless steel shelves expand interior usable sample space, but limit the max operation temperature to 975°C. If higher heat is required, use ceramic shelves.	32.5 x 21.1 cm. / 12.8 x 8.3 in.	SH408X1
Shelf handle	For use with crucible trays, to pull a hot tray in and out of the furnace.		HN408X2A
Shelf pegs	Holds shelves in place and allows flexibility of shelf placement.		JSX16

Replacement part	Description	Dimensions	Cat. no
C rucible tray	Order extra trays designed to custom configure your furnace. Trays hold crucibles of various sizes, meant to sit on shelves or hearth trays when in use.	32.4 x 25.4 x 17.1 cm. / 12.75 x 10 x 6.75 in.	TY408X2A
Hearth tray	Hearth trays and hearth plates sit in the bottom of the furnace and protect the bottom heating element during operation.	17.1 x 14.9 x 1.9 cm. / 6.75 x 5.9 x 0.75 in.	PH146X1
Refractory shelf	Refractory shelves expand interior usable sample space without interfering with max operation temperature.	35.2 x 25.4 x 1.27 cm. / 13.87 x 10 x 0.56 in.	SH412X1
Shelf handle	For use with crucible trays, to pull a hot tray in and out of the furnace.		HN408X2A

*Additional replacement parts may be available. Contact your local representative or customer support to order the following: hearth tray for Thermolyne small benchtop muffle furnace model FB1300 (Cat. No. PH44X1); hearth tray for Thermolyne small benchtop muffle furnace model FB1400 (Cat. No. PH48X1); hearth tray for Thermolyne industrial benchtop muffle furnace (Cat. No. PHX2).