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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:
key study
Study period:
08 Dec 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: CIPAC MT 187
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg, Karlsruhe, Germany
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Particle sizeopen allclose all
Percentile:
D10
Mean:
0.565 µm
Remarks on result:
other: mean value of duplicate analysis.
Percentile:
D50
Mean:
2.448 µm
Remarks on result:
other: mean value of duplicate analysis.
Percentile:
D90
Mean:
6.718 µm
Remarks on result:
other: mean value of duplicate analysis.

Any other information on results incl. tables

Results

The dispersing pressure was adjusted to 3.0 bar and the feeding rate was set to 30 %. Three metal balls were used as sieving aid. The particle size distribution of Frits was determined using the laser diffraction method. The particle size distribution of Frits was determined following to CIPAC MT 187 in duplicate. Table 1 summarizes the results of the particle size distribution.

 

Table 1: Particle Size Distribution

Measurement

L10 D (v, 0.1) [µm]

L50 D (v, 0.5) [µm]

L90 D (v, 0.9) [µm]

1

0.560

2.434

6.698

2

0.569

2.461

6.737

Mean Value

0.565

2.448

6.718

Discussion and Conclusion

The particle size distribution was determined using the laser diffraction method with dry dispersion. The particle size distribution of Frits was determined following CIPAC MT 187. The dispersing pressure was adjusted to 3.0 bar and the feeding rate was 30 %. Three metal balls were used as sieving aid.

For the volume based particle size distribution the following results were obtained. The L10 D (v, 0.1) was determined to be 0.565 µm, the L50 D (v, 0.5) was determined to be 2.448 µm and the L90 D (v, 0.9) was determined to be 6.718 µm.

Applicant's summary and conclusion