(13b) A Comparative Analysis of the Ssspintester and Schulze Ring Shear Tester

The SSSpinTester purports to generate flow functions of bulk solids with 0.5 cc of material at stresses as low as 50 Pa.  Clearly such a technique would be very useful practically – especially for early stage new product development.  However, the capability has lacked any third party validation.  Here we present flowability data generated on via the SSSpinTester and a Schulze Ring Shear Tester over multiple materials, varying over a range of material properties.