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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:
February 27, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
2.7 µm
St. dev.:
0.07
Percentile:
D50
Mean:
9.5 µm
St. dev.:
0.21
Percentile:
D90
Mean:
158.9 µm
St. dev.:
7.57

Particle size (µm)
D10 D50 D90
Test series 1 2.8 9.6 164.2
Test series 2 2.7 9.3 153.5
Average 2.7 9.5 158.9
SD 0.07 0.21 7.57
Conclusions:
D50: 9.5 µm
Executive summary:

The particle size distribution was determined using laser diffraction. As measuring device, a Malvern Mastersizer 2000 was used. The powder was brought via a powder dispersing cell Scirocco 2000 into the laser light beam and the diffraction pattern was determined. From the diffraction pattern the particle size distribution was calculated.

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

The average of D10 resulted to be 2.7 µm; the average of D50 resulted to be 9.5 µm; the average of D90 resulted to be 158.9 µm.

Conclusion

D50: 9.5 µm

Description of key information

D50: 9.5 µm

Additional information

ISO 13320 - Laser scattering/diffraction