Rheology

Rheology is the study of flow and deformation of materials under applied forces which is routinely measured using a rheometer. The measurement of rheological properties is applicable to all materials from fluids such as dilute solutions of polymers and surfactants through to concentrated protein formulations, to semi-solids such as pastes and creams, to molten or solid polymers as well as asphalt.

Many commonly-used materials and formulations exhibit complex rheological properties, whose viscosity and viscoelasticity can vary depending upon the external conditions applied, such as stress, strain, timescale and temperature. Internal sample variations such as protein concentration and stability, and formulation type for biopharmaceuticals, are also key factors that determine rheological properties.

Rheological properties impact at all stages of material use across multiple industries – from formulation development and stability to processing and product performance. The type of rheometer required for measuring these properties is often dependent on the relevant shear rates and timescales as well as sample size and viscosity. Examples of rheological measurements include:

Kinexus ultra+

The Kinexus ultra+ rheometer has the highest sensitivity air bearing and widest torque range, coupled with the unprecedented vertical (axial) control capabilities of the Kinexus platform, for advanced rheological testing. Unique sequence-driven rSpace software enables fully customizable test design to allow researchers to set-up and investigate tailored rheological test protocols.

Kinexus ultra+

Rosand RH2000

Compact system capable of meeting most test requirements encountered in capillary rheometry. Combining many advanced features associated with larger floor-standing models, the Rosand RH2000 system can be configured for research measurements through to Quality Control applications.

Rosand RH2000

Kinexus pro+

Targeted at the rheological characterization of dispersions and other complex fluids and soft solids, the Kinexus pro+ rheometer has unprecedented dual-action capabilities for both shear and vertical testing. A modular rheometer with true ‘plug and play’ functionality for all measuring systems and environmental control units, Kinexus also enables pioneering Standard Operating Procedure (SOP) driven rheological testing.

Kinexus pro+

Kinexus lab+

The Kinexus lab+ is designed to withstand the rigors of a busy Quality Control laboratory, to provide robust and reliable rheological test capabilities. Ease of use is paramount in this environment, and the rSpace software enables Standard Operating Procedure (SOP) driven rheological testing for test protocols that can be used company wide.

Kinexus lab+

Rosand RH7/10

Used in hundreds of research laboratories around the world, the robust ‘H’ frame design of Rosand RH7 and RH10 floor standing capillary rheometers allows operation under ultra-high loading conditions, as well as providing optimized space for multiple accessory configurations.

Rosand RH7/10

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