Flow rate and flow equation of pharmaceutical free-flowable powder excipients

Abstract

This experimental work presents the results of flowability testing of the free-flowable particle size fraction of 0.0250-0.0315 cm of five powder excipients. The single-point determination of the mass flow rate from a cylindrical, flat-bottomed hopper was primarily influenced by the diameter of a circular orifice.

The significant effect of the orifice height was also noted.

Keywords

• Powder excipients
• flow equation
• flow rate
• size fraction
• cylindrical hopper