This webinar discusses the use of the flexible gapping system of Kinexus to allow the use of a range of novel geometries to measure otherwise difficult to characterise disperse systems. Comparisons will be made on model systems, a zero-shear viscosity and yielding material, between classical rotational rheometer geometries (cone and plate), a "mixing" paddles, to demonstrate that very comparable results can be made with the non-standard dispersion geometry. As such, with their ability to keep unstable systems dispersed for longer, or even mixing two components with time, these novel geometries extend the use of Kinexus for previously challenging samples.

What will you learn?

Alongside the use of the new geometries, a method of calculating geometry constants (convert torque to shear stress, and angular velocity to shear rate), will be shown to make what was relative measurements a much more absolute / direct measurement of the viscosity of the sample.