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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
Study period:
January 24th, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 59, “Dry Sieve test”
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
Specific details on test material used for the study:
The test item was used in its initial form, without any pre-treatment.
Percentile:
D50
Mean:
1 003 - 1 680 µm
Remarks on result:
other: sieving test

Determination of particle size distribution

Replication No. Sieve Size (µm) Weight of Test Item (g) Material Passed through Sieve Residue (Rx) %  Mean of Residue (Rx) %
dx, g Percentage (%)
Replication 1 2057 10.0057 9.6023 95.97 4.03 4.07
Replication 2 10.0021 9.5921 95.90 4.10
Replication 1 1680 10.0046 6.0146 60.12 39.88 39.74
Replication 2 10.0014 6.0416 60.41 39.59
Replication 1 1003 10.0052 4.0006 39.99 60.01 59.98
Replication 2 10.0012 4.0058 40.05 59.95
Replication 1 850 10.0018 1.5016 15.01 84.99 84.94
Replication 2 10.0043 1.5123 15.12 84.88
Replication 1 420 10.0013 0.9553 9.55 90.45 90.48
Replication 2 10.0026 0.9498 9.50 90.50
Conclusions:
D50: between 1003 and 1680 µm
Executive summary:

The particle size distribution of the test item was determined by dry sieve test , according to the CIPAC MT 59, “Dry Sieve test” guideline.

The dry sieve test with the test item was carried out in duplicate. The sieve with 420 µm size retained ≥ 90% of the particles; the sieve with 2057 µm size, retained ≤ 10% of the particles.

The median of particle size (D50) of the test item resulted to be between 1003 and 1680 µm.

Conclusion

D50: between 1003 and 1680 µm

Description of key information

D50: between 1003 and 1680 µm

Additional information

CIPAC MT 59 - Dry Sieve test