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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of distribution:
mass based distribution
Mass median aerodynamic diameter:
18.321 µm
Geometric standard deviation:
0.015
Percentile:
D10
Mean:
5.963 µm
St. dev.:
0.132
Percentile:
D50
Mean:
15.364 µm
St. dev.:
0.282
Percentile:
D90
Mean:
44.177 µm
St. dev.:
1.349

Under magnification, the sample was observed to be made up of single crystalline particles. The smallest individual particle size was approximately 3 μm and the largest individual size was approximately 58 μm.

Conclusions:
The particle size mass media aerodynamic diameter (MMAD) was determined to be 18.321 µM and the volume of sample with particles < 10 µm was 28.4%.

Description of key information

The particle size mass media aerodynamic diameter (MMAD) was determined to be 18.321 µM and the volume of sample with particles < 10 µm was 28.4%. These values were determined using a laser diffraction particle size analyser and in accordance with ISO 13320:2009.

Additional information