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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:
December 07, 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)
Version / remarks:
1981
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Version / remarks:
2009
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
31.9 µm
St. dev.:
0.99

Particle size (µm)
D10 D50 D90
Test series 1 4.6 32.6 82.6
Test series 2 4.2 31.2 81.2
Average 4.4 31.9 81.9
SD 0.28 0.99 0.99
Conclusions:
D50: 31.9 µm
Executive summary:

The particle size distribution was determined using laser diffraction method, in accordance to inter alia ISO 13320 (2009) and CIPAC MT 187 (2009) method.

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 test item has a median particle size D50 of ca 31.9 µm.

Conclusion

D50: 31.9 µm

Description of key information

D50: 31.9 µm

Additional information

ISO 13320 and CIPAC MT 187 - laser diffraction method