Preventing Wall Slip in Rheology Experiments

Wall slip is a common problem when testing highly concentrated emulsions or suspensions on a rheometer. It is usually caused by large velocity gradients in a thin region adjacent to the wall. When slip occurs, the measured viscosity can be significantly lower than the actual viscosity of the sample. To overcome this influence, we have introduced a series of roughened surface geometries, such as crosshatched or serrated plates, which significantly improve the contact between the geometry and the sample to reduce slip.

Must Know Analytical Techniques for Biopharma Developers

eBook Must Know Analytical Techniques for Biopharma Developers A Guide to Improving Biologics Development with Materials Characterization Advancing next generation therapeutics requires reliable characterization of biotherapeutic binding and biomolecular stability. Characterizing biological macromolecules is important for understanding their functions and relationships, which empowers the development of new therapies and treatments. In the case of biotherapeutic…