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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Remarks:
Laser diffraction
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 25, 2018 - October 23, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
CIPA MT 187
Qualifier:
according to
Guideline:
other: CIPAC MT 187
Version / remarks:
CIPAC MT 187 "Particle size analysis by laser diffraction". In: CIPAC Handbook vol. K "Analysis of Technical and Formulated Pesticides".
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Provided by the sonsor
Key result
Percentile:
D10
Mean:
ca. 1.639 µm
St. dev.:
0.15
Key result
Percentile:
D50
Mean:
ca. 105.7 µm
St. dev.:
10.83
Key result
Percentile:
D90
Mean:
ca. 301.4 µm
St. dev.:
17.57

The 10% particle size of the substance was 1.495, 1.621 and 1.801µm for replicates R1, R2 and R3, rispectively.

The 50% particle size of the substance was 94.58, 106.4 and 116.2µm for replicates R1, R2 and R3, rispectively.

The 90% particle size of the substance was 281.1, 310.6 and 312.4µm for replicates R1, R2 and R3, rispectively.

Conclusions:
The mean particle sizes (µm) and Standerd Deviation of the substance were:
D10 = 1.639 ± 0.15;
D50 = 105.7 ± 10.83;
D90 = 301.4 ± 17.57.

Description of key information

The mean particle sizes (µm) and Standerd Deviation of the substance were:

D10 = 1.639 +- 0.15;

D50 = 105.7 +- 10.83;

D90 = 301.4 +- 17.57.

Additional information