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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-14 to 2017-06-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: CIPAC Handbook Volume K: Analysis of Technical and Formulated Pesticides, CIPAC MT 187
Version / remarks:
2003
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
other: particle volume or particle mass

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D50
Mean:
13.99 µm
St. dev.:
0.033
Remarks on result:
other:
Remarks:
Mean of two measurements
Percentile:
D10
Mean:
1.68 µm
St. dev.:
0.015
Remarks on result:
other:
Remarks:
Mean of two measurements
Percentile:
D90
Mean:
64.7 µm
St. dev.:
0.65
Remarks on result:
other:
Remarks:
Mean of two measurements

Any other information on results incl. tables

Particle Size Distribution:

 

Measurement 1

[µm]

Measurement 2

[µm]

Average

[µm]

L10D(v, 0.1)

1.668

1.689

1.68

L50D(v, 0.5)

14.009

13.963

13.99

L90D(v, 0.9)

64.243

65.162

64.70

Applicant's summary and conclusion

Conclusions:
The L10 D (v, 0.1) was determined to be 1.68 µm, the L50 D (v, 0.5) was determined to be 13.99 µm and the L90 D (v, 0.9) was determined to be 64.70 µm.
Executive summary:

The particle size distribution was determined using the laser diffraction method with dry dispersion according to CIPAC MT 187. The dispersing energy was adjusted to 4.0 bar.

Two measurements have been performed. The L10 D (v, 0.1) was determined to be 1.68 µm, the L50 D (v, 0.5) was determined to be 13.99 µm and the L90 D (v, 0.9) was determined to be 64.70 µm.