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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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187 (Particle size analysis by laser diffraction)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
yes
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Key result
Percentile:
D90
Mean:
541.4 µm
St. dev.:
50.2
Remarks on result:
other: Individual value nearest the average was used as the final result: 548.0 µm
Key result
Percentile:
D10
Mean:
80 µm
St. dev.:
0.5
Remarks on result:
other: individual value nearest to average was used as the final value: 8.2 µm
Key result
Percentile:
other: Median
Mean:
206.2 µm
St. dev.:
13
Remarks on result:
other: Individual value nearest to average was used as the final result: 203.9 µm

The results of determination of particle size distribution of the test substance

 

 

MEDIAN (μm)

DIAMETER ON

CUMULATIVE 90% (μm)

DIAMETER ON

CUMULATIVE 10% (μm)

AVERAGE

206.2

541.4

8.0

ST. DEVIATION

13.0

50.2

0.5

The individual determination value nearest to average is used as final result of the test.

 

MEDIAN (μm)

DIAMETER ON

CUMULATIVE 90% (μm)

DIAMETER ON

CUMULATIVE 10% (μm)

RESULT

203.9

548.0

8.2

 

Conclusions:
Median Diameter = 203.9 μm;
D90 = 548.0 μm;
D10 = 8.2 μm
Executive summary:

A test for determination of particle size distribution of the test item was performed according to the CIPAC MT 187 Particle size analysis by laser diffraction. The whole measuring procedure was repeated six times. The average was computed from resulting values. The value nearest to the average was used as final result of the test.

Median Diameter = 203.9 μm;

D90 = 548.0 μm;

D10 = 8.2 μm

Description of key information

ISO 13320

Additional information

The median diameter was 203.9 µm