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
The volume of gas (Helium) displaced by a known mass of substance
is measured.
Instrument:
Micromeritics, Accupyc 1330
Parameters and applications
Helium pycnometry density measures approximately the true density
of particulate materials.
The density measured by helium pycnometry is a prerequisite for
Air Permeability.
Micromeritics, Accupyc 1330
Prerequisites
1 – 5g of dry substance and the volume preferably 7.5-75 cm³.
Drying conditions have to be determined.
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