5E-PL300B Automatic Plastometric Indices Determinator (aslo called Spozhnikov Plastometer) is used to determine the plastometric indices of bituminous coal (maximum thickness of plastic layer Y, final contraction value of plastic layer X) and describe technical characteristics of coke, which helps to guide coking and coal blending. It is widely applied in coal mining, metallurgy, chemical industry and verification institution of coal quality.