Our L 3/11 - LT 40/12 series is the right choice for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability. The furnaces come equipped with either a folding door or lift door at no extra charge.

• Tmax 1100 °C or 1200 °C
• Heating from two sides by ceramic heating plates (heating from three sides for models L 24/11 - LT 40/12)
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Highly durable cured vacuum fibre module lining
• Casing made of sheets of textured stainless steel (non-rusting design)
• Double-walled casing for low external temperatures and high stability
• Optional fold-down door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Silent solid-state power control relay

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
• Protective gas connection on the rear wall of furnace
• Manual or automatic gas supply system

With their unbeatable price/performance ratio, these compact muffle furnaces are perfect for many applications in the laboratory. Quality features like the double-walled furnace casing of rust-free stainless steel, their compact, lightweight constructions, or the heating elements encased in quartz glass tubes make these models reliable partners for your application.

• Tmax 1100 °C, working temperature 1050 °C
• Heating from two sides from heating elements in quartz glass tubes
• Maintenance-friendly replacement of heating elements and insulation
• Multilayered insulation with fibre plates in the furnace chamber
• Casing made of sheets of textured stainless steel (non-rusting design)
• Double-walled casing for low external temperatures and high stability
• Folding door which can also be used as a work platform
• Exhaust air outlet in rear wall
• Silent solid state relay
• Compact dimensions and light weight
• Controller mounted in side space (under the door on the LE 2/11 and LE 4/11 to save space)

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
• Protective gas connection on the rear wall of furnace
• Manual gas supply system

Heating elements on support tubes radiating freely into the furnace chamber provide for particularly short heating times for these models. Thanks to their robust lightweight refractory brick insulation, they can reach a maximum working temperature of 1300 °C. These models thus represent an interesting alternative to the familiar L(T) 3/11 models, when you need particularly short heating times or a higher application temperature.

Tmax 1300 °C

• Heating from two sides from heating elements
• Heating elements on support tubes ensure free heat radiation and a long service life
• Multilayer insulation with robust lightweight refractory bricks in the furnace chamber
• Casing made of sheets of textured stainless steel (non-rusting design)
• Double-walled casing for low external temperatures and stability
• Optional fold-down door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable air inlet in the furnace door
• Exhaust air outlet in rear wall of furnace
• Silent solid-state power control relay

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
• Protective gas connection on the rear wall of furnace
• Manual or automatic gas supply system

The models LV 3/11 - LVT 15/11 are especially designed for ashing in the laboratory. A special air intake and exhaust system allows air exchange of more than 6 times per minute. Incoming air is preheated to ensure a good temperature uniformity.

• Tmax 1100 °C
• Heating from two sides by ceramic heating plates
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Highly durable, high-performance cured vacuum fibre module lining
• Casing made of sheets of textured stainless steel (non-rusting design)
• Double-walled casing for low external temperatures and stability
• Optional fold-down door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Silent solid-state power control relay
• Air exchanged more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air

Additional Equipment

• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load

We particularly recommend the L 9/11/SKM model if your application involves aggressive substances. The furnace has a ceramic muffle with embedded heating from four sides. The furnace thus combines a very good temperature uniformity with excellent protection of the heating elements from aggressive atmospheres. Another aspect is the smooth, nearly particle free muffle (furnace door made of fibre insulation), an important quality feature for some ashing processes.

• Tmax 1100 °C
• Muffle heated from four sides
• Furnace chamber with embedded ceramic muffle, high resistance to aggressive gasses and vapours
• Casing made of sheets of textured stainless steel (non-rusting design)
• Optional fold-down door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable working air inlet in the door
• Exhaust air outlet in rear wall of furnace
• Silent solid-state power control relay

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
• Protective gas connection on the rear wall of furnace
• Manual or automation gas supply system

This complete system, with an furnace, integrated precision scale, and software, was designed especially for combustion loss determination in the laboratory. The determination of combustion loss is necessary, for instance, when analyzing sludges and household garbage, and is also used in a variety of technical processes for the evaluation of results. The difference between the initial total mass and the combustion residue is the combustion loss. During the process, the software included records both the temperature and the weight loss.

• Tmax 1100 °C or 1200 °C
• Heating from two sides by ceramic heating plates
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Highly durable cured vacuum fibre module lining
• Casing made of sheets of structured stainless steel (non-rusting design)
• Optional fold-down door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable working air inlet in the door
• Exhaust air outlet in rear wall of furnace
• Silent solid-state power control relay
• Delivery includes base, ceramic plunger with base plate in the furnace lining, precision scale and software package
• 3 scales available for different maximum weights and scaling ranges
• Software for documentation of the temperature curve and combustion loss using a PC

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load

The LT 5/11HA - LT 15/11HA muffle ovens with integrated air circulation provide an optimum temperature uniformity in the furnace chamber and heat transmission to your batch. This advantageous effect not only increases the precision of the results of your work, it is also a true quality factor, particularly when you need good uniformity in the lower temperature range.

• Tmax 1100 °C
• Heating from two sides by ceramic heating plates
• Ceramic heating plates with integral heating element which is safeguarded against splashing, and easy to replace
• Highly durable cured vacuum fibre module lining
• Casing made of sheets of textured stainless steel (non-rusting design)
• Double-walled casing for low external temperatures and stability
• With lift door (LT), whereby the hot side is away from the operator
• Exhaust air outlet in rear wall of furnace
• Silent solid-state power control relay
• Circulation fans for better heat transmission and distribution, particularly during heating and cooling

Additional Equipment

• Vent, vent with fan or catalytic converter
• Over-temperature limit controller with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load

Select between different base plates and collecting pans for protection of the furnace and easy loading (for models L, LT, LE, LV and LVT on pages 4 - 12).

Ceramic ribbed plate	Ceramic collecting pan	Steel collecting pan

Heat-resistant gloves for protection of the operator when loading or removing hot materials, resistant to 600 °C or 900 °C.

Gloves, Tmax 650 °C. Article No.: 493000004	Gloves, Tmax 900 °C. Article No.: 491041101	Various tongs for easy loading and unloading of the furnace. Article No.: 493000002 (300 mm) 493000003 (500 mm)