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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:
December 07th, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Version / remarks:
adopted in 1981
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
adopted in 2009
Qualifier:
according to
Guideline:
other: CIPAC MT 187 (Particle Size Analysis by Laser Diffraction)
Version / remarks:
adopted in 2009
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
1.9 µm
St. dev.:
0.07
Percentile:
D50
Mean:
8 µm
St. dev.:
0.21
Percentile:
D90
Mean:
35.3 µm
St. dev.:
0.07

 µm
D10 D50 D90
Replicate 1 1.9 8.2 35.4
Replicate 2 1.8 7.9 35.3

Mean

1.9 8.0 35.3

SD

0.07 0.21 0.07
Conclusions:
D50: 8.0 µm
Executive summary:

The particle size distribution of test item was analyzed by laser diffraction tecnique, according to the ISO 13320 method.

A representative sample of the test item was fed to the powder dispersing cell Scirocco 2000. The diffraction pattern of the laser light is measured by the detector of the particle analyzer. From the measured diffraction pattern the particle size distribution was calculated.

Based on the mean of two replicates, the D10, D50 and D90 were was found to be 1.9, 8.0 and 35.3 µm, respectively.

Conclusion

D50: 8.0 µm

Description of key information

D50: 8.0 µm

Additional information

Particle Size Analysis by Laser Diffraction - ISO 13320 and CIPAC MT 187