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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:
3017-03-30
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
15.2 µm
St. dev.:
0.05
Key result
Percentile:
D50
Mean:
65.8 µm
St. dev.:
0.8
Percentile:
D90
Mean:
241.2 µm
St. dev.:
5.95

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

Table 1: Results of Particle Size Distribution

 

Test

series 1
(µm)

Test

series 2
(µm)

Average
(µm)
D10 15.1 15.2 15.2

D50(mean diameter)

65.0 66.6 65.8
D90 235.2 247.1 241.2
Conclusions:
The median particle size of the test item was determined to be D50 = 66 µm.
Executive summary:

A study was performed according to OECD TG 110 and ISO 13320 in order to determine the particle size distribution of the test item by laser diffraction measurement. Two test series of 3 measurements each were performed with the test item. The median particle size of the test item was determined to be D50 = 66 µm.

Description of key information

The median particle size of the test item was determined to be D50 = 66 µm.

Additional information

A study was performed according to OECD TG 110 and ISO 13320 in order to determine the particle size distribution of the test item by laser diffraction measurement. Two test series of 3 measurements each were performed with the test item. The median particle size of the test item was determined to be D50 = 66 µm (reference 4.5-1).