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Physical & Chemical properties

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)
Qualifier:
according to guideline
Guideline:
other: European Commission Regulation (EC) No. 440/2008
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Principles of method if other than guideline:
The measurements CIPAC MT 187: Particle Size Analysis by Laser Diffraction; ISO13320: 2009 Particle Size Analysis - Laser Diffraction Methods.
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
mass based distribution
Key result
Percentile:
D10
Mean:
ca. 219.9 µm
St. dev.:
0
Key result
Percentile:
D50
Mean:
ca. 442.9 µm
St. dev.:
0
Key result
Percentile:
D90
Mean:
ca. 823.6 µm
St. dev.:
0

The particle size distribution showed a monomodal distribution. The maximum was observed at approximately 450 µm.

Due to the coarse particles the test item was sieved before the measurement (1000 µm mesh wire sieve). Approximately 98.6 % of the test item was smaller than 1000 µm. Only this fraction was measured with laser diffraction. The median particle size L50 of the test item deduced from the particle size distributions was 442.9 µm. The particle size L10 of the test item deduced from the particle size distributions was 219.9 µm. The particle size L90 of the test item deduced from the particle size distributions was 823.6 µm.

Description of key information


The particle size distribution showed a monomodal distribution. 





  
  

The maximum was observed at approximately 450 µm. Due to the coarse particles the test item was sieved before the measurement (1000 µm mesh wire sieve). 








Approximately 98.6 % of the test item was smaller than 1000 µm. Only this fraction was measured with laser diffraction. 








The median particle size L50 of the test item deduced from the particle size distributions was 442.9 µm. The particle size L10 of 








the test item deduced from the particle size distributions was 219.9 µm.








 The particle size L90 of the test item deduced from the particle size distributions was 823.6 µm. 






    
    



The particle size distribution showed a monomodal distribution. The maximum was observed at ap









 
  

  



The particle size distribution showe







































Due to the coarse particles the test item was sieved before the measurement (1000 µm mesh wire sieve). Approximately 98.6 % of the test item was smaller than 1000 µm. Only this fraction was measured with laser diffraction. The median particle size L50 of the test item deduced from the particle size distributions was 442.9 µm. The particle size L10 of the test item deduced from the particle size distributions was 219.9 µm. The particle size L90 of the test item deduced from the particle size distributions was 823.6 µm.















  
  






The maximum was observed at approximately 450 µm.

Additional information