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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:
from 2018-05-23 to 2018-11-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Qualifier:
equivalent or similar to guideline
Guideline:
other: Cl PAC MT 187 Particle Size Analysis by laser diffraction
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
3.8 µm
St. dev.:
0
Key result
Percentile:
D50
Mean:
17.6 µm
St. dev.:
0.1
Percentile:
D90
Mean:
49 µm
St. dev.:
0.1

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

Test series 1:

D10 = 3.8 µm

D50 = 17.6 µm

D90 = 49.0 µm

Test series 2:

D10 = 3.8 µm

D50 = 17.5 µm

D90 = 48.9 µm

Average:

D10 = 3.8 µm

D50 = 17.6 µm

D90 = 49.0 µm

Conclusions:
The particle size distribution D50 was determined to be 17.6 µm.
Executive summary:

A study was conducted according to OECD TG 110, OPPTS 830.7520 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. Two test series of 3 measurements each were performed with the test item. The test item has a median particle size D50 = 17.6 µm, which was determined by laser diffraction measurement.

Description of key information

The particle size distribution D50 was determined to be 17.6 µm.

Additional information

A study was conducted according to OECD TG 110, OPPTS 830.7520 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. Two test series of 3 measurements each were performed with the test item. The test item has a median particle size D50 = 17.6 µm, which was determined by laser diffraction measurement.