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Physical & Chemical properties

Particle size distribution (Granulometry)

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Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Internal study was performed.
GLP compliance:
not specified
Other quality assurance:
other: no data
Type of particle tested:
other: fibers
Specific details on test material used for the study:
no data
Remarks on result:
other: No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks:
No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks on result:
other: No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks:
No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation

The mass fraction of WHO fiber is 0.047 % of the total mass of fibers + particles. The concentration is 0.022 million fibers/mg for WHO fibers and 0.030 million fibers/mg for all fibers and 85.7 million particles/mg. The concentration of fibres in this sample is very low and close to the detection limit.

Conclusions:
The mass fraction of WHO fiber is 0.047 % of the total mass of fibers + particles. The concentration is 0.022 million fibers/mg for WHO fibers and 0.030 million fibers/mg for all fibers and 85.7 million particles/mg. The concentration of fibres in this sample is very low and close to the detection limit.
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
internal method.
GLP compliance:
not specified
Other quality assurance:
other: no data
Type of method:
other: SEM
Type of particle tested:
other: powder
Type of distribution:
other: no data
Specific details on test material used for the study:
three samples were studied for this experiment: they are named PFF, FSF and GPL 325-200.
Remarks on result:
other: No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks:
No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks on result:
other: No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation
Remarks:
No quantitative data are available to fill in the field 'Mass median diameter' as D50 percentile or Standard deviation

The sample PFF has a more little fraction of fiber if compared to the others (FSF and GPL 325-200).

Conclusions:
The sample PFF has a more little fraction of fiber if compared to the others (FSF and GPL 325-200).

Description of key information

In the mentioned study, the mass fraction of WHO fiber is 0.047 % of the total mass of fibers + particles. The concentration is 0.022 million fibers/mg for WHO fibers and 0.030 million fibers/mg for all fibers and 85.7 million particles/mg. The concentration of fibres in this sample is very low and close to the detection limit.

Additional information