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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:
2015-07-09 to 2015-07-10
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study was conducted in accordance with the official OECD guideline No 110 (1981).
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
no
Remarks:
he laboratory is GLP certified but this analysis was not a formal GLP study
Type of method:
microscopic examination
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
listed as "Beta" Alumina Powder"
Batch Number 767
Purity 100%
Mass median aerodynamic diameter:
25.9 µm
Geometric standard deviation:
6.8
Key result
Percentile:
D50
Mean:
48.5 µm
St. dev.:
6.8
Key result
Percentile:
D10
Mean:
3.2 µm
St. dev.:
3.9
Key result
Percentile:
D90
Mean:
678 µm
St. dev.:
26
Conclusions:
The mass median diameter of the test substance Beta'' Alumina Powder was determined to be 48 µm; the mass median aerodynamic diameter (MMAD) was 26 µm.

Description of key information

The particle size distribution of Beta'' Alumina Powder was determined according to OECD Guudeline for testing of chemicals No. 110 "Particle Size Distribution/Fibre Length and Diameter Distributions" (May 12, 1981).
The mass median diameter was determined to be 48 µm; the mass median aerodynamic diameter (MMAD) was 26 µm.

Additional information

The Optical (Light) Microscopy and Laser Diffraction tests were performed to determine the particle size distribution of the test substance Beta'' Alumina Powder.