A rotational rheometer, also known as a shear rheometer, is an instrument used to determine how a liquid or slurry flows. Rotational rheometers can measure viscosity, thixotropy, shear stress, and shear strain. Used is the plastics, petroleum, cosmetic, food, and pharmaceutical industries, rotational rheometers help to maintain parameters such as consistency and fluidity, which in turn allow predictions to be made about stability, texture, and shelf life. Rotational rheometers apply a known force to the sample and measure how it reacts to the force and the force the sample then exerts on the rheometer.
Features that can vary between rotational rheometers include viscosity ranges measured, whether or not there is a built in temperature probe, and the user friendliness of the controls and read out screen.
Discover and compare Rotational Rheometers:
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| Company | TA Instruments – a division of Waters Corporation | TA Instruments – a division of Waters Corporation |
| Item | Rubber Processing Analyzer RPA Flex and RPA Elite | ARES-G3™ Rheometer |
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| Catalog Number | RPA Flex / RPA Elite | ARES-G3 |
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| Description | Virtually every aspect of a rubber material’s processing and performance characteristics is influenced by its rheological properties. TA Instruments provides a complete range of rotorless shear rheometers and curemeters to help you optimize processing, curing, and application performance. All TA Virtually every aspect of a rubber material’s processing and performance characteristics is influenced by its rheological properties. TA Instruments provides a complete range of rotorless shear rheometers and curemeters to help you optimize processing, curing, and application performance. All TA Instruments rubber rheometers are manufactured to exacting mechanical standards and with the latest measurement technology for the most accurate, reliable, and reproducible data available. Available automation systems allow for maximum unattended laboratory productivity in all test environments. Relevant ASTM, DIN, and ISO standards are easily met, as are demands for advanced testing, making these instruments the ideal choice for quality control, analytical, and research needs.... Read More | The advanced Waters TA Instruments ARES-G3 Rheometer pushes rheology further, delivering sharper data across more conditions. Building upon 55 years of rheology innovation, the ARES-G3 Rheometer’s cutting-edge technology and precision hardware capture real fluid behavior with fewer adjustments and The advanced Waters TA Instruments ARES-G3 Rheometer pushes rheology further, delivering sharper data across more conditions. Building upon 55 years of rheology innovation, the ARES-G3 Rheometer’s cutting-edge technology and precision hardware capture real fluid behavior with fewer adjustments and more accurate outcomes.
The ARES-G3 Rheometer features a modular design and high-performance core, offering a scalable platform that evolves with research and quality control needs.
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Faster workflows can accelerate routine testing and data procession, helping improve lab efficiency
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Expanded testing capabilities add support for solid material testing and advanced viscoelastic measurements
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Enhanced data acquisition help capture more detailed, simultaneous data for deeper material insights
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Advanced control features enable complex deformation profiles and waveform customization for cutting-edge research
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| Torque Resolution | Inquire | 1 nN.m |
| Torque Range | 0.0001 to 25 N.m | 0.001 to 20 N |
| Temperature Range | Inquire | -150 °C to 600 °C (Forced Convection Oven, FCO),
-10 °C to 150 °C (Advanced Peltier System, APS) |
| Frequency Range | Inquire | 1 x 10-7 rad/s to 628 rad/s |
| Frequency | 0.1 to 2.0 Hz (6 to 120 cpm) | Inquire |
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