tungsten zirconium oxide

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13 October 2016

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:

Within this study, the distribution of sizes of the particles within the sample has been performed using Microtrac-X100.

GLP compliance:

not specified

Type of method:

Laser scattering/diffraction

Type of distribution:

volumetric distribution

Key result

Percentile:

D10

Mean:

1.677 µm

Remarks on result:

other: SD not reported

Key result

Percentile:

D50

Mean:

7.006 µm

Remarks on result:

other: SD not reported

Key result

Percentile:

D90

Mean:

11.84 µm

Remarks on result:

other: SD not reported

MV (Mean diameter in microns of the “volume distribution”): 7.126 µm

MN (Mean diameter, in microns, of the “number distribution"): 1.324 µm

MA (Mean diameter, in microns, of the “area distribution”): 4.277 µm

CS - Calculated surface: 1.403 m²/cc

SD – Standard deviation: 3.821

Conclusions:

The median particle size (D50) was determined to be 7.006 µm, whereas the D10 and D90 were determined to be 1.677 and 11.84 µm, respectively. These values can be considered representative for the granular forms.

Description of key information

From the key study in which the particle size distribution of the test item (Klimisch 2, Luxfer MEL Technologies, 2016) was evaluated using Microtrac-X100, the D10, D50 and D90 values were determined to be 1.677 µm, 7.006 µm and 11.84 µm, respectively.