Bulk Density and Flowability¶

Definitions¶

Loose Bulk Density: The mass per unit volume of powder freely poured into a container (ASTM D7481). Tapped Density: The mass per unit volume after mechanical tapping (1,250 taps, ASTM D7481). Carr Index (CI): ((Tapped − Loose) / Tapped) × 100. CI > 25 indicates poor flowability. Hausner Ratio (HR): Tapped / Loose. HR > 1.25 indicates poor flowability.

Typical Values for Paprika Powder¶

Grade	Loose Density (g/mL)	Tapped Density (g/mL)	Carr Index	Hausner Ratio	Flowability
Powder (40 mesh)	0.40–0.55	0.55–0.70	20–25	1.25–1.35	Fair
Fine (60+ mesh)	0.35–0.50	0.55–0.75	25–35	1.35–1.55	Poor
Coarse (20 mesh)	0.45–0.60	0.55–0.65	12–20	1.15–1.25	Good

Cross-References¶

Particle Size — Correlation with bulk density
Packaging — Density affects fill weight
Container Loading — Density determines utilization