Bulk Density Tapped Density. The tapped and untapped (bulk) densities are determined by demarcating a small cuvette with known volumes then inserting a small mass of powder into the cuvette (bulk density) and tapping it vertically against a padded bench top 50 times (tapped density) The mass is divided by the initial and final volumes From these values the Hausner ratio (tapped density/bulk density).
Bulk Density Tapped Density In Pharma Youtube from YouTube
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Handbook of Pharmaceutical Excipients, 7th ed. Sample chapter.
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Tapped Density an overview ScienceDirect Topics
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The Hausner ratio is a number that is correlated to the flowability of a powder or granular materialIt is named after the engineer Henry H Hausner (1900–1995) The Hausner ratio is calculated by the formula = where is the freely settled bulk density of the powder and is the tapped bulk density of the powder The Hausner ratio is not an absolute property of a material.
PDF fileDensity (bulk) 0430g/cm 3 for powder 07 g/cm 3 for granules Density (tapped) 0734g/cm 3 for powder 08g/cm 3 for granules Density (true) 1514g/cm 3 Dissociation constant pK a = 135 at 188C Flash point.
