The Basic Melt Flow Indexer, often abbreviated as "MFI", is an affordable-price tabletop instrument used to test the melt flow resistance (MFR) of a wide range of thermo-plastic materials. The tester conforms to all National and International melt flow resistance standards, including BS EN ISO 1133 and ASTM D1238. Any temperature within 120°C-450°C (248°F-842°F) can be accurately controlled.