Cupellation furnace

This furnace is the worldwide standard for the most accurate gold purity testing. The process involves placing the sample inside porous crucibles called "Cupels." At high heat, the furnace oxidizes lead and base metals, which are then absorbed by the cupel, leaving behind a pure bead of precious metal. Key consumables and spare parts include the disposable cupels, heating elements, and thermocouples to ensure precise temperature control.