BULK DENSITY AND ENVELOPE DENSITY Autotap / Dual Autotap Quantachrome

The tapped density of powdered, granular of flakey material is highly dependent on the manner in which the particles are packed together. During tapping, particles gradually pack more efficiently, the powder volume decreases and the tapped density increases.

Tapped Density Standards


ASTM B527  
(metallic powders)
ASTM D4164  
(Formed Catalysts)
ASTM D4781  
(fine catalysts)
 IDF 134  
(dried milk)
 ISO 787-11  
(pigments)
 ISO 3953  
(metallic powders)
 ISO 8460  
(instant coffee)
 ISO 8967  
(dried milk)
 ISO 9161  
(uranium dioxide powder)
JIS K5101-12-2  
(pigments)
 JIS Z 2512  
(metallic powders)
MPIF 46  
(metal powders)
USP<616>Method II   (preharmonization)  
(pharmaceutical powders)
USP<616> Method I (harmonized)  
(pharmaceutical powders)
JP 3.01 Part 2 Method I  
(harmonized)  
(pharmaceutical powders)
PH. Eur. 6.8 Method I (harmonized)  
(pharmaceutical powders)