Laser
diffraction
Dynamic Light Scattering
Microscopy and digital image
analysis
Scanning electron microscopy / EDX
Gasadsorption (BET)
Differential Scanning Calorimetry
Air permeability
Helium pycnometry
Mercury porosimetry
Apparent
volume
Flowability
Rotary sample divider
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Instrument and
measuring principle
A defined amount of particulate materials is tapped in a graduated
cylinder a predetermined number of times and the change in volume
is recorded.
Instrument:
Pharma-Test PT-PD tester,
Ph.Eur.
Parameters and applications
Poured density and tapped density is determined according to the
procedure described in Ph.Eur.
The difference between these densities describes the cohesiveness
and compressibility of the substance.
Prerequisite
80 – 150 g of substance.
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Pharma-Test PT-PD tester, Ph.Eur.
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