Muffle Furnace upto 900oC PSAW For high temperatures of upto 900oC. Outer body is made of thick mild steel. Heating elements are made of high temperature kanthal wire surrounding the heating chamber, assuring uniform distribution of heat. A highly efficient light weight insulation is cast permanently into the furance body. The furance can be operated continuously up to 900oC Temperature is controlled by an energy regulator fitted on the front panel.