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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
25.09.2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: This study meets the requirements of the OECD Principles of Good Laboratory Practice, Paris, 1992.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002

Materials and methods

Test guideline
Guideline:
other: CTL SOP 224
Principles of method if other than guideline:
To determine the particle size by mechanical sieving.Apparatus: Endecotts Octagon sieve shaker and 8" diamater sieves to BS 410.
GLP compliance:
yes
Type of distribution:
other: Cumulative distribution (% by weight)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Particle size
Percentile:
D50
Mean:
> 300 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
< 53 µm
Distribution:
0 %
No.:
#2
Size:
< 63 µm
Distribution:
0 %
No.:
#3
Size:
< 75 µm
Distribution:
0 %
No.:
#4
Size:
< 90 µm
Distribution:
4.6 %
No.:
#5
Size:
< 106 µm
Distribution:
8 %
No.:
#6
Size:
< 150 µm
Distribution:
17.2 %
No.:
#7
Size:
< 300 µm
Distribution:
48.6 %

Any other information on results incl. tables

Agglomeration observed in most sieves, therefore the sample is believed to be finner than the test indicates (due to observed blinding/agglomeration effects).

Applicant's summary and conclusion