Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
01 June 2017 to 06 July 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Particle size analyses were carried out on the materials using sieve analysis
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
sieving
Type of particle tested:
other: fine dust
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Called "ATZ INT 000002" in attached report.

Results and discussion

Mass median aerodynamic diameter:
344 µm
Particle size
Key result
Percentile:
other: median
Mean:
344 µm
St. dev.:
0
Remarks on result:
other: Standard deviation not reported
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
> 400 µm
Distribution:
38.2 %
No.:
#2
Size:
< 400 µm
Distribution:
57.8 %
No.:
#3
Size:
< 300 µm
Distribution:
40.8 %
No.:
#4
Size:
< 200 µm
Distribution:
1.3 %
No.:
#5
Size:
< 100 µm
Distribution:
0 %
Remarks on result:
other: smallest sieve used during testing

Applicant's summary and conclusion

Conclusions:
After sieve analysis the median particle size was calculated to be 344µm.
Executive summary:

After sieve analysis the median particle size was calculated to be 344µm.