● The Round sampling cups are used matching with the carbon and sulphur analyzer to quickly analyze carbon content, silicon content and carbon equivalent in molten iron.The carbon cup is made of resin coated sand, straight quartz tube, T1 and T2 thermocouple wires and Sealing cement and other components. When the molten iron is poured into the sample cup, the molten iron gradually solidifies with time. The thermal analysis measures and calculates the CEL, C, Si and other components according to the temperature platform of the cooling curve.