The fully automated SSSpinTester uses the science of centrifugal force to measure the unconfined yield strength of fine powders requiring a very small amount of sample. The instrument provides repeatable and consistent data by first consolidating the material using centrifugal force to compress the sample inside the sample holder. After the initial compaction step, the SSSpinTester then completes the analysis routine using the same centrifugal force to determine the yield strength of the material. Using the latest advancements in technology, this instrument provides measurements at an extended pressure range. This provides actual performance results without the need to extrapolate data leading to inaccurate results.