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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
Version / remarks:
1981
Deviations:
no
Principles of method if other than guideline:
A set of 5 sieves (20 cm diameter) was used : 500 µm, 250 µm, 150 µm, 75 µm, 63 µm
A sample of 100 grams was passed in dry conditions through the set of sieves using a light brush. The retained material from each sieve was weighed on an analytical scale.
GLP compliance:
no
Type of method:
sieving
Type of distribution:
other: sieve analysis
Remarks on result:
not measured/tested
Percentile:
D50
Mean:
ca. 310 µm
Remarks on result:
other: St.dev. cannot be determined; single measurement performed
Percentile:
D10
Mean:
ca. 25 µm
Remarks on result:
other: St.dev. cannot be determined; single measurement performed
Percentile:
D90
Mean:
ca. 596 µm
Remarks on result:
other: St.dev. cannot be determined; single measurement performed
No.:
#1
Size:
>= 500 µm
Distribution:
26 %
No.:
#2
Size:
< 500 µm
Distribution:
74 %
No.:
#3
Size:
< 250 µm
Distribution:
43 %
No.:
#4
Size:
< 150 µm
Distribution:
33 %
No.:
#5
Size:
< 75 µm
Distribution:
16 %
No.:
#6
Size:
< 63 µm
Distribution:
12 %
Conclusions:
The particle size distribution of this representative test material is summarized as follows:
D10 = ca. 25 µm
D50 = ca. 310 µm
D90 = ca. 596 µm

The particle size distribution of the test item:
>= 500 µm 26 %
< 500 µm 74 %
< 250 µm 43 %
< 150 µm 33 %
< 75 µm 16 %
< 63 µm 12 %

Description of key information

The particle size distribution of a representative test material is summarized as follows:

D10 = ca. 25 µm

D50 = ca. 310 µm

D90 = ca. 596 µm

Additional information