http://www.aimsizer.com/powder-tester-carr-indices-astm-d6393.html

AS-6393 Powder Tester is a powder testing apparatus designed by AimSizer Scientific according to ASTM D6393 Standard Test Method for Bulk Solids Characterization by Carr Indices. AS-6393 is a comprehensive powder characteristics tester and has the ability to analyze the flowability of powder including measurements of Carr angle of repose, Carr angle of fall, Carr angle of difference, Carr loose bulk density, Carr packed bulk density, Carr compressibility, Carr cohesion, Carr uniformity, Carr angle of spatula and Carr dispersibility. AimSizer 6393 has become the most cost-effective testing instrument conforming to ASTM D6393.