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For easy loading and unloading of the furnace

The muffle furnaces L 3/11 - LT 60/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability.

Standard Equipment
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 60/12) for an optimal temperature uniformity
• Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
• Thermocouple type S (1200 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• With lift door (LT)
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller with touch operation B510 (5 programs with each 4 segments)
• Solid state relays provide for lownoise operation

Option
• Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Heating elements on support tubes radiating freely into the furnace chamber provide for particularly short heating times for these muffle furnaces. Thanks to their robust lightweight refractory brick insulation, they can reach a maximum working temperature of 1300 °C. These muffle furnaces thus represent an interesting alternative to the familiar L(T) ../12 models, when you need a higher application temperature.

Standard Equipment
• Heating from two sides
• Heating elements on support tubes ensure free heat radiation and a long service life
• Multi-layer insulation with robust lightweight refractory bricks in the furnace chamber
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• With flap door (L)
• Adjustable air inlet in the furnace door
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for lownoise operation
• With Controller C550 (10 programs / 20 steps)

Option
• Chimney, chimney with fan or catalytic converter
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Ashing furnace LV ../11 is designed especially for ashing processes to 1050 °C in the laboratory. Applications include determining loss on ignition, ashing food and plastics for subsequent substance analysis. A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process. Incoming air passes the furnace heating and is pre-heated to ensure good temperature uniformity.

Standard Equipment
• Heating from two sides
• Ceramic heating plates with integral heating element which is safeguarded, and easy to replace
• Air exchange of more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air, temperature uniformity according to DIN 17052-1 to +/− 10 °C in the defined empty work area (from 550 °C)
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Suitable for many standardized ashing processes according to ISO, ASTM, EN, and DIN
• With flap door (LV)
• Solid state relays provide for lownoise operation
• Controller C550 (10 programs with each 20 segments)

Options
• Overtemperature limit controller
• Hole for thermocouple in rear wall
• Hole for thermocouple in furnace door

We particularly recommend the muffle furnace L 9/11/SKM for heat treatment of aggressive substances. The furnace has a ceramic muffle with embedded heating from four sides. The muffle 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 fiber insulation), an important quality feature.

Standard Equipment
• Furnace chamber with embedded ceramic muffle, high resistance to aggressive gasses and vapours
• Muffle heated from four sides
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• With flap door (L)
• Adjustable working air inlet in the door
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for lownoise operation
• Defined application within the constraints of the operating instructions
• With controller C550

Option
• Chimney, chimney with fan or catalytic converter
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automation gas supply system
• Port for thermocouple in the rear wall or in the furnace door

With their convincing price/performance ratio and the fast heat-up rates, these compact muffle furnaces are perfect for many applications in the laboratory. Quality features like the dual shell furnace housing 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.

Standard Equipment
• Heating from two sides from heating elements protected in quartz glass tubes
• Fast heating times
• Maintenance-friendly replacement of heating elements and insulation
• Housing coated in RAL 9003
• Solid state relays provide for lownoise operation
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Flap door which can also be used as a work platform
• Exhaust air outlet in rear wall
• Compact dimensions and light weight
• Controller mounted under the door to save space
• Controller R7 (adjustable for one temperature)

Option
• Chimney, chimney with fan or catalytic converter

We recommend these accessories for applications up to 1100 °C to protect the furnace floor, especially if a charging cart is used.
• Tmax 1100 °C
• Three raised edges
• Heat-resistant alloy 314 (AISI)/(DIN material no. 1.4841)
• Outer dimensions in mm (WxDxH 240x390x25)

The muffle furnaces L 3/11 - LT 60/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability.

Standard Equipment
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 60/12) for an optimal temperature uniformity
• Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
• Thermocouple type S (1200 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• With lift door (LT)
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller with touch operation C550
• Solid state relays provide for lownoise operation

Option
• Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Ashing furnace LV(T) .. 11 is designed especially for ashing processes to 1050 °C in the laboratory. Applications include determining loss on ignition, ashing food and plastics for subsequent substance analysis. A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process. Incoming air passes the furnace heating and is pre-heated to ensure good temperature uniformity.

Standard Equipment
• Heating from two sides
• Ceramic heating plates with integral heating element which is safeguarded, and easy to replace
• Air exchange of more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air, temperature uniformity according to DIN 17052-1 to +/− 10 °C in the defined empty work area (from 550 °C)
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Suitable for many standardized ashing processes according to ISO, ASTM, EN, and DIN
• With lift door (LVT)
• Solid state relays provide for lownoise operation
• Controller with touch operation B510 (5 programs with each 4 segments)

Option
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Port for thermocouple in the rear wall or in the furnace door

Heating elements on support tubes radiating freely into the furnace chamber provide for particularly short heating times for these muffle furnaces. Thanks to their robust lightweight refractory brick insulation, they can reach a maximum working temperature of 1300 °C. These muffle furnaces thus represent an interesting alternative to the familiar L(T) ../12 models, when you need a higher application temperature.

Standard Equipment
• Heating from two sides
• Heating elements on support tubes ensure free heat radiation and a long service life
• Multi-layer insulation with robust lightweight refractory bricks in the furnace chamber
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• With lift door (LT)
• Adjustable air inlet in the furnace door
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for lownoise operation
• Controller with touch operation B510 (5 programs with each 4 segments)

Option
• Chimney, chimney with fan or catalytic converter
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

With their convincing price/performance ratio and the fast heat-up rates, these compact muffle furnaces are perfect for many applications in the laboratory. Quality features like the dual shell furnace housing 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.

Standard Equipment
• Heating from two sides from heating elements protected in quartz glass tubes
• Fast heating times
• Maintenance-friendly replacement of heating elements and insulation
• Housing coated in RAL 9003
• Solid state relays provide for lownoise operation
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Flap door which can also be used as a work platform
• Exhaust air outlet in rear wall
• Compact dimensions and light weight
• Controller mounted under the door to save space
• Controller R7 (adjustable for one temperature)

Option
• Chimney, chimney with fan or catalytic converter

We recommend these accessories for applications up to 1100 °C to protect the furnace floor, especially if a charging cart is used.
• Tmax 1100 °C
• Three raised edges
• Heat-resistant alloy 314 (AISI)/(DIN material no. 1.4841)
• Outer dimensions in mm (WxDxH 240x540x30)

Exhaust vent for collection and upstream direction of escaping gases

The muffle furnaces L 3/11 - LT 60/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability.

Standard Equipment
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 60/12) for an optimal temperature uniformity
• Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
• Thermocouple type N (1100 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• With flap door (L)
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller with touch operation B510 (5 programs with each 4 segments)
• Solid state relays provide for lownoise operation

Option
• Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Ashing furnace LV(T) .. 11 is designed especially for ashing processes to 1050 °C in the laboratory. Applications include determining loss on ignition, ashing food and plastics for subsequent substance analysis. A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process. Incoming air passes the furnace heating and is pre-heated to ensure good temperature uniformity.

Standard Equipment
• Heating from two sides
• Ceramic heating plates with integral heating element which is safeguarded, and easy to replace
• Air exchange of more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air, temperature uniformity according to DIN 17052-1 to +/− 10 °C in the defined empty work area (from 550 °C)
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Suitable for many standardized ashing processes according to ISO, ASTM, EN, and DIN
• With lift door (LVT)
• Solid state relays provide for lownoise operation
• Controller C550 (10 programs with each 20 segments)

Option
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Port for thermocouple in the rear wall or in the furnace door

Heating elements on support tubes radiating freely into the furnace chamber provide for particularly short heating times for these muffle furnaces. Thanks to their robust lightweight refractory brick insulation, they can reach a maximum working temperature of 1300 °C. These muffle furnaces thus represent an interesting alternative to the familiar L(T) ../12 models, when you need a higher application temperature.

Standard Equipment
• Heating from two sides
• Heating elements on support tubes ensure free heat radiation and a long service life
• Multi-layer insulation with robust lightweight refractory bricks in the furnace chamber
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• With lift door (LT)
• Adjustable air inlet in the furnace door
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for lownoise operation
• With Controller C550 (10 programs / 20 steps)

Option
• Chimney, chimney with fan or catalytic converter
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

We recommend these accessories for applications up to 1100 °C to protect the furnace floor, especially if a charging cart is used.
• Tmax 1100 °C
• Three raised edges
• Heat-resistant alloy 314 (AISI)/(DIN material no. 1.4841)
• Outer dimensions in mm (WxDxH 340x790x30)

Organic components are catalytically cleaned at about 600 °C, broken into carbon dioxide and water vapour. Irritating odors are thus largely eliminated. The B500 - P580 controllers can be used to switch the catalytic converter automatically (not for models L(T) 9/14, L(T) 15.., L 1/12, LE 1/11, LE 2/11).*

* Note: If other controller types are used an adapter cable for connection to mains supply has to be ordered separately. The device will be activated by plugging in the socket.

The muffle furnaces L 3/11 - LT 60/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability.

Standard Equipment
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 60/12) for an optimal temperature uniformity
• Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
• Thermocouple type N (1100 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• With flap door (L)
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller with touch operation C550
• Solid state relays provide for lownoise operation

Option
• Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Ashing furnace LV(T) .. 11 is designed especially for ashing processes to 1050 °C in the laboratory. Applications include determining loss on ignition, ashing food and plastics for subsequent substance analysis. A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process. Incoming air passes the furnace heating and is pre-heated to ensure good temperature uniformity.

Standard Equipment
• Heating from two sides
• Ceramic heating plates with integral heating element which is safeguarded, and easy to replace
• Air exchange of more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air, temperature uniformity according to DIN 17052-1 to +/− 10 °C in the defined empty work area (from 550 °C)
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
• Suitable for many standardized ashing processes according to ISO, ASTM, EN, and DIN
• With flap door (LV)
• Solid state relays provide for lownoise operation
• Controller with touch operation B510 (5 programs with each 4 segments)

Option
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Port for thermocouple in the rear wall or in the furnace door