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DescriptionLMF series benchtop muffle furnaces feature a 550 cubic inch chamber with fiber insulation and firebrick heating plates. The furnace cabinet is constructed of 16-gage steel with a baked epoxy finish. A top exhaust port allows gases to be vented, or it can be plugged during operation to seal the opening. Two temperature controller models are available: automatic and multi-stage programmable. LMF series furnaces are ideal for heat treating applications, material research and sample ashing determinations in the geological, metalurgical, and wastewater treatment industries. These furnaces are also used in chemistry, physics, and engineering laboratories.