SUBJECT

Bulk Density

PUBLICATIONS

Browse publications

Explore PTI articles, Insights, Know How, and technical publications related to this subject.

  • Technical hero image for a PowderTechnology.info Monthly Know-How on Hausner Ratio and Carr Index, showing two graduated cylinders with loose and tapped powder, three different powder mechanism backgrounds, the Hausner Ratio and Carr Index formulas, a workflow from result to next test, and a reference to an included practical interpretation guide.
    4 July 2026

    Hausner Ratio and Carr Index: What the Numbers Tell You and Where They Break Down

    Both the Hausner Ratio and Carr Index reduce bulk and tapped density to a single number. The mechanism behind that number, whether aeration, particle shape, or surface cohesion, determines whether it supports a process decision or actively misleads one.

    Know How