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The muffle furnaces L 1/12 – LT 40/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability. The muffle furnaces come equipped with either a flap door or lift door at no extra charge.

Standard Equipment

• Tmax 1100 °C or 1200 °C
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 – LT 40/12) 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) or type S (1200 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• Optional flap door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• 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)
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller B510 resp. R7 for L 1/12 (5 programs with each 4 segments)
• Solid state relays provide for lownoise operation
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Ashing furnace LV  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
· Tmax 1100 °C
· 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)
· Suitable for many standardized ashing processes according to ISO, ASTM, EN,
and DIN
· Optional flap door (LV) which can be used as work platform or lift door (LVT) with
hot surface facing away from the operator
· Controller B410 (5 programs with each 4 segments), alternative controllers

Additional Equipment
· Over-temperature limiter with adjustable cutout temperature as temperature
limiter to protect the oven and load
· Port for thermocouple in the rear wall or in the furnace door
· Charging rack with closed or perforated trays for loading the furnace in two
levels incl. holder for inserting/removing the trays up to a max. temperature of 800°C and a max. loading weight of 2 kg for the LV(T) 9/11 respectively 3 kg for
the LV(T) 15/11