mi40 Visco is designed and developed with additional capability to perform measurements according to the standard ISO 11443 which is commonly used for capillary rheometers.

Melt Flow Indexer / Melt Flow Index Tester, is also known as Plastometer, is instrument used for measuring the value of melt flow index (MFR / MFI) in the unit of g/10min, and the melt volume flow rate (MVR) in the unit of cm³/10min of thermoplastic polymer in the form of pellets, powder or fine granules. Melt Flow Indexers are designed to perform tests according to standards ISO 1133 and ASTM D1238

Performing measurement in a capillary rheometer is normally more challenging and time consuming compared to a standardized MFR-test. Now GÖTTFERT had developed the special Add-on "visco" option for mi40, which enable the running of these viscosity tests as easy as the standardized melt flow index tests.

During the “visco” test mode, the mi40 instrument uses the integrated motor to push the piston at constant defined speeds. The resulting pressure is measured with a force transducer in the piston holder. Compared to normal MFR-measurements, it is possible to reach higher shear rates which are more relevant for actual production processes. Therefore, viscosity tests by this GÖTTFERT Melt Flow Indexers with visco add-on are more like a processability test compared to the standard MFR-test.