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Physical & Chemical properties

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:
May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
Laser scattering/diffraction
Type of particle tested:
agglomerate
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Identification: Short-chain fructo-oligosaccharides
EC No. :908-300-1
Appearance: Slightly yellow powder

COMPOSITION:
Total FOS:96% expressed as dry matter
1-Kestose (GF2): 37.1% expressed as dry matter
Nystose (GF3): 50.5% expressed as dry matter
1F-Fructofuranosylnystose (GF4): 12.4% expressed as dry matter
Other components:Glucose +Fructose + Saccharose : 4% expressed as dry matter
Key result
Percentile:
D10
Mean:
ca. 31 µm
Remarks on result:
other: No SD available
Key result
Percentile:
D50
Mean:
ca. 75 µm
St. dev.:
40
Key result
Percentile:
D90
Mean:
ca. 129 µm
Remarks on result:
other: No SD available

The particle size of the sample as is in the range between 2 and 230 μm.
• The mean value is 79μm and the standard deviation is 40μm
• The 10%-Fraction (particle diameter at which 10% of the distribution, i.e. 10% of the vol-ume percent, is smaller and 90% is larger) is: d10 = 31 μm 
• The median value (particle diameter at which half of the distribution, i.e. half of the vol-ume percent, is larger and half is smaller) is: d50 = 75 μm
• The 90%-Fraction (particle diameter at which 90% of the distribution, i.e. 90% of the vol-ume percent, is smaller and 10% is larger) is: d90 = 129 μm

Conclusions:
The particle size of the sample is in the range between 2 and 230 μm.
Executive summary:

The particle size of the test item was determined in a study performed in accordance with ISO 13320:2009 guideline, using the laser diffraction method. The particle size of the test item is in the range between 2 and 230 μm.

Description of key information

The particle size of the test item was determined in a study performed in accordance with ISO 13320 Method, using the laser diffraction method. The particle size of the test item is in the range between 2 and 230 μm. 

Additional information

Testing was conducted according to a scientifically valid and accepted method (ISO 13320) without deviations. The study is considered as reliable (Klimisch 1) and is selected as a key study for the endpoint.