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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:
2020-05-14
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Version / remarks:
1982
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D90
Mean:
218.9 µm
St. dev.:
3.33
Percentile:
D10
Mean:
9.8 µm
St. dev.:
0.19
Key result
Percentile:
D50
Mean:
80.9 µm
St. dev.:
1.44

Two test series of at least 3 measurements each were performed with the test item.


 


Test series 1


D10:         9.9 µm                                                              Standard deviation: 0.18 µm


D50:         82.3 µm            (Median diameter)                      Standard deviation: 1.05 µm


D90:         222.2 µm                                                           Standard deviation: 2.34 µm


 


Test series 2


D10:         9.6 µm                                                              Standard deviation: 0.09 µm


D50:         79.4 µm            (Median diameter)                      Standard deviation: 0.19 µm


D90:         215.5 µm                                                           Standard deviation: 0.50 µm


 


Average


D10:         9.8 µm                                                              Standard deviation: 0.19 µm


D50:         80.9 µm            (Median diameter)                      Standard deviation: 1.44 µm


D90:         218.9 µm                                                           Standard deviation: 3.33 µm

Conclusions:
The D10, D50 and D90 percentile were determined as D10 = 9.8 µm, D50 = 80.9 µm and D90 = 218.9 µm, respectively.
Executive summary:

A study was conducted according to OECD Test Guideline 110 (1981) and ISO 13320 (2009). The D10, D50 and D90 percentile were determined by laser diffraction as D10 = 9.8 µm, D50 = 80.9 µm and D90 = 218.9 µm, respectively.

Description of key information


The D10, D50 and D90 percentile were determined as D10 = 9.8 µm, D50 = 80.9 µm and D90 = 218.9 µm (reference 4.5-1).


 


 


Additional information

A study was conducted according to OECD Test Guideline 110 (1981) and ISO 13320 (2009). The D10, D50 and D90 percentile were determined by laser diffraction as D10 = 9.8 µm, D50 = 80.9 µm and D90 = 218.9 µm, respectively.