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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
Study period:
13 Nov 2017
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)
Version / remarks:
2009
Deviations:
no
GLP compliance:
yes
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D25
Mean:
11.6 µm
St. dev.:
0.15
Remarks on result:
other: mean value of 3 measurements
Percentile:
D50
Mean:
24 µm
St. dev.:
0.25
Remarks on result:
other: mean value of 3 measurements
Percentile:
D75
Mean:
48.7 µm
St. dev.:
1.82
Remarks on result:
other: mean value of 3 measurements

Test results       

Test sample

D25

D50

D75

1

11.7

24.0

48.1

2

11.4

24.2

50.7

3

11.6

23.7

47.2

Mean

11.6

24.0

48.7

St. Dev.

0.15

0.25

1.82

RSD [%]

1.32

1.05

3.73

 

Discussion

It is considered that the test results were acceptable because the difference of measured values was quite low.

Description of key information

D50 = 24 µm (ISO 13320, Laser scattering/diffraction)

Additional information