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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:
16/2/2016 to 16/2/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to
Guideline:
other: refer below principle
Principles of method if other than guideline:
The particle size distribution was determined with the help of Rotap sieve shaker. For this method, calibrated sieves were stacked with the coarsest opening sieve at the top of the stack and finest opening sieve at the bottom. 10 g test item was weighed and put in the coarsest opening sieve placed at the top of the stack, covered with the lid. The stack was fitted in sieve shaker and was shaken for 10 minutes. The material was emptied from the above coarsest sieve into a pre-weighed piece of butter paper. A soft bristle brush was used to remove all the particles. The quantity obtained from the 1st sieves was weighed, and transferred to original apparatus. The above procedure was repeated for each sieve including bottom pan. Weight obtained from each sieve was then divided by the weight of the test item taken and percentage of each sieve was calculated.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
counted distribution
Key result
Percentile:
D50
Mean:
75 - 150 µm
Remarks on result:
other: Mass median diameter
No.:
#1
Size:
150 µm
Distribution:
71.4 %
Remarks on result:
other: No other detail available
No.:
#2
Size:
106 µm
Distribution:
23.31 %
Remarks on result:
other: No other detail available
No.:
#3
Size:
75 µm
Distribution:
3.5 %
Remarks on result:
other: No other detail available

OBSERVATION TABLE:

Amount of test item weighed (g) =10 g

Method run time (minutes) =10 min

Weight of butter paper (g)= 0.238 g

Sieve sizes(in microns)

Weight of butter paper + test item (g)

Test item quantity retained after sieving (g)

Percentage (%) of test item*

150 microns

7.378 g

7.140 g

71.40 %

106 microns

2.569 g

2.569 g

23.31%

75 microns

0.588 g

0.350 g

3.50%

53 microns

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25 microns

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10 microns

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*Percentage of test item=       test item retained after sievingX 100

                                                               Original test item taken

Conclusions:
The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 75 micron.
Executive summary:

The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 75 micron.

Description of key information

The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 75 micron.

Additional information

The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 75 micron.