Particle and powder densities

Penetration into the internal structure of porous material with a fluid to determine particle density can result in ambiguous volume measurements. Thus, immersion methods have minimal use unless specific conditions are defined. 

The bulk density of a powder is its mass divided by the bulk volume it occupies. This volume includes the inter-particle space between the particles as well as the particle volume and should not be confused with the term particle volume, which does not include the inter-particle space. 

Bulk packed and poured densities are known to be dependent upon the rate of powder feed when material is directed into a specific volume containment. Thus the rate of powder flow. 

Weight/Iength ratio Pipe Weight per unit length  

Skeletal or internal porous structure Adsorption Mercury  

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Table 1.3 Glossary of terms used to define particle and powder densities.

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