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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:
25 October 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data are sufficient and scientifically acceptable.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Method used was laser diffraction. The technique of laser diffraction is based on the principle that particles passing through a laser beam will scatter light at an angle that is directly related to their size: large particles scatter at low angles, whereas small particles scatter at high angles. The method is standardized [ISO 13320-1: 1999 Particle size analysis - Laser diffraction methods - Part 1: General principles].
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Key result
Percentile:
D50
Mean:
>= 1 - <= 5 µm
Remarks on result:
other: volume median diameter

See document attached under background material.

Conclusions:
The median particle size (x50) value is determined by customers' requirements; it is < 10 microns and the typical range is 1 to 5 microns.
Executive summary:

The particle size distribution was analysed using laser diffraction. The method is standardized [ISO 13320-1: 1999 Particle size analysis - Laser diffraction methods - Part 1: General principles].

The median particle size (x50) value is determined by customers' requirements; it is < 10 microns and the typical range is 1 to 5 microns.

Description of key information

The median particle size (x50) value is determined by customers' requirements; it is < 10 microns and the typical range is 1 to 5 microns.

Additional information

The particle size distribution was analysed using laser diffraction. The method is standardized [ISO 13320-1: 1999 Particle size analysis - Laser diffraction methods - Part 1: General principles].

The median particle size (x50) value is determined by customers' requirements; it is < 10 microns and the typical range is 1 to 5 microns.