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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 27,2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Version / remarks:
See belo the applied method
Principles of method if other than guideline:
Laser light scattering. The particle size distribution was analyzed using the Mastersizer 2000 tool, which uses the technique of laser diffraction to measure the size of particles. It does this by measuring the intensity of light scattered as a laser beam passes through a dispersed particulate sample. This data is then analyzed to calculate the size of the particles that created the scattering pattern.
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Remarks on result:
not measured/tested
Percentile:
D50
Mean:
ca. 20.797 µm
St. dev.:
0
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.

The analysis has been done after 2 minute of sonication

D10
ca. 7.206 µm
D50
ca. 20.797 µm
D90
ca. 67.582 µm
Conclusions:
Median Mass Diameter =20.797 µm
Executive summary:

Direct Blue 80 has been tested for granulometry. The test item shows a median mass diameter of 20.797 µm

Description of key information

20.797 µm

Additional information

D10= 7.206 µm

D50= 20.797 µm

D90= 67.582 µm