What is a Melt Flow Index Tester? A Melt Flow Index Tester is a precision instrument used to measure the melt flow rate (MFR) of thermoplastic polymers. The MFR indicates how easily a polymer melts and flows, which is a vital parameter for processing and quality control in polymer manufacturing. How Does a Melt Flow Index Tester Work? The Melt Flow Index Tester operates by heating a polymer...