Rheometers & Melt Flow Testers
Instron's rheology systems deliver the insight needed to understand how thermoplastics flow, deform, and perform during processing. By accurately characterizing melt-flow behavior under realistic conditions, these instruments help you predict processability, fine-tune formulations, and maintain high production standards. Whether you need fast, reliable melt-flow data or advanced rheological analysis, our portfolio — from Melt Flow Testing Systems to Capillary Rheometers — provides the right level of capability for every stage of development and quality control.
The Instron® MFi Series of melt flow index testers are specifically designed for easy and accurate measuring of melt flow rate (MFR) and melt volume rate (MVR) according to Melt Flow Rate testing procedures determined by ASTM D1238 and ISO 1133 standards.
These benchtop capillary rheometers are suitable for both Quality Control and Research & Development laboratories. Their two-column main frame construction guarantees maximum performance. With a velocity ratio of 1:500,000, corresponding to a piston speed of 0.0024 to 1,200 mm/min, they perform tests with unlimited steps at constant shear rate or constant speed. Meets ISO, ASTM, and equivalent standards.
This section includes all Instron capillary rheometers and melt flow testing systems produced since 1998, including the Rheologic, Modular Melt Flow Testing System, and more.
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Not sure which rheometer or melt flow testing system fits your application? Tell us about your testing requirements and we will help you find the right solution.
Talk to an Applications Engineer
Tell us about your testing needs, and we'll help you configure the right frame, load cell, grips, and software for your lab. Please complete the form below, and we'll respond within 1-2 business days. For a faster response, call +1-800-473-7838 or +1 781 828 2500 if you are outside of the US.
