The LH 15/12 - LF 120/14 laboratory furnaces have been trusted for many years as professional
chamber furnaces for the laboratory. These furnaces are available with either a robust insulation
of light refractory bricks (LH models) or with a combination insulation of refractory bricks in the
corners and low heat storage, quickly cooling fibre material (LF models). With extensive additional
equipment these models can be optimally adapted to the intended purpose.

• Tmax 1200 °C, 1300 °C, or 1400 °C
• 5-sided heating for very good temperature uniformity
• Heating elements on support tubes ensure free heat radiation and a long service life
• Protection of floor heating and flat stacking surface provided by embedded SiC plate in the floor
• LH models: multilayered, fibre-free insulation of light refractory bricks and special backup insulation
• LF models: high-quality fibre insulation with corner bricks for shorter heating and cooling times
• Door with brick-on-brick seal, hand fitted
• Short heating times due to high installed power
• Side vent with bypass connection for exhaust pipe
• Self-supporting arch for high stability and greatest possible protection against dust
• Quick lock on door
• Freely adjustable air slide intake in furnace floor
• Stand included

Additional equipment

• Parallel swinging door, pivots away from operator, for opening when hot
• Lift door with electro-mechanic linear drive
• Separate wall-mounting or floor standing cabinet for switchgear
• Automatic vent flap
• Cooling fan for shorter cycle times
• Protective gas connector, sealed casing
• Retort made of quartz glass for very clean atmosphere, quartz glass covered door with lid function
• Manual or automatic gas supply system
• Scale to measure weight reduction during annealing