Following ASTM D1238, Instron's CEAST MF50 tester with a piston holding device can be used to test high fluidity of molten thermoplastics.
ASTM D1238 prescribes four test procedures to measure the fluidity of plastics in the Melt Flow Index with testing the rate of extrusion of resins through a die.
ISO 1133 and ASTM D1238 specifies testing methods for calculating the fluidity of plastics, and the CEAST Modular Melt Flow Tester follows Procedure B in ISO 1133.
Melt Flow Testers with load cells increase repeatability of testing Melt Flow Rate and Melt Volume Flow Rate in accordance with ISO 1133-2 and ASTM D1238.
Instead of manual cleaning methods, the Integrated Barrel Cleaning Device is used to easily clean Melt Flow Testers after every test to ensure accuracy.