The XSB ashing furnace provides ideal conditions for ashing petrochemicals, coal and other hydrocarbons. It has a maximum operating temperature of 2012°F (1100°C) and a heated chamber volume of up to 40L. The furnace offers a uniquely low external temperature due to an air gap between the chamber exterior and actual furnace exterior. It also includes easily replaceable wound-wire heating elements. Safety features include a vertical lift door that ensures the hot insulation stays facing away from the operator and a protective switch that interrupts power to the elements when the door is opened. The XSB conforms to multiple ASTM and ISO specifications.