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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Qualifier:
equivalent or similar to guideline
Guideline:
other: In house volumetric method using sieves
Deviations:
no
Principles of method if other than guideline:
Determined volumetric distribution using a vibrating filter system with the following mesh sizes: 850µm, 500µm, 300µm, 180µm, 75µm
GLP compliance:
no
Other quality assurance:
other: Mitsuboshi Method
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Mitsuboshi Chemical Co., Ltd. lot no.306009 and 409002
- Expiration date of the lot/batch:
- Purity test date:

RADIOLABELLING INFORMATION (if applicable)
- Radiochemical purity:
- Specific activity:
- Locations of the label:
- Expiration date of radiochemical substance:

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
- Stability under test conditions:
- Solubility and stability of the test substance in the solvent/vehicle:
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium:

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing:
- Preliminary purification step (if any):
- Final dilution of a dissolved solid, stock liquid or gel:
- Final preparation of a solid:

FORM AS APPLIED IN THE TEST (if different from that of starting material)

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable)

OTHER SPECIFICS:
Key result
Percentile:
D10
Mean:
35 µm
Remarks on result:
not determinable because of methodological limitations
Key result
Percentile:
D50
Mean:
135 µm
Remarks on result:
not determinable because of methodological limitations
Key result
Percentile:
D90
Mean:
270 µm
Remarks on result:
not determinable because of methodological limitations
No.:
#1
Size:
> 850 µm
Distribution:
2.6 %
No.:
#2
Size:
> 500 - < 850 µm
Distribution:
20 %
No.:
#3
Size:
> 300 - < 500 µm
Distribution:
34.1 %
No.:
#4
Size:
> 180 - < 300 µm
Distribution:
23.2 %
No.:
#5
Size:
> 75 - < 180 µm
Distribution:
15.6 %
No.:
#6
Size:
< 75 µm
Distribution:
4.7 %
Conclusions:
The study shows that percentile D10 has a mean particle size of 35 µm, D50 has 135 µm and D90 has a mean particle size of 270 µm.

Description of key information

The study shows that percentile D10 has a mean particle size of 35 µm, D50 has 135 µm and D90 has a mean particle size of 270 µm.

Additional information