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EC number: 235-243-3 | CAS number: 12138-09-9
The test item consisted of agglomerated particles which were non-transparent.
The particles were introduced to the analyser beam by the dry powder feeder by direct spraying through the measurement area. The powder was loosened by an integrated vibrator. The particles were dispersed and fed to the optical system by pressurized dry air (1.5 barg). After passing the spectrometer the sample was collected in a vacuum cleaner.
After adjusting the laser, measuring the background and adjusting the correct particle concentration (obscuration) the measurement was started. The control software automatically performed three measurements. The average of these three measurements was given as result. Two test series of three measurements each were performed. The measurement time was 8 s.
The median particle size L50(D (v, 0.5): 50 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series: L50 = 3.64 µm
2ndtest series: L50 = 3.65 µm
The average of the median particle size L50was:
L50= 3.6 µm
The particle size L10(D (v, 0.1): 10 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series: L10 = 1.54 µm
2ndtest series: L10 = 1.53 µm
The average of the particle size L10was:
L10= 1.5 µm
The particle size L90(D (v, 0.9): 90 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series: L90 = 7.40 µm
2ndtest series: L90 = 7.44 µm
The average of the particle size L90was:
L90= 7.4 µm
The particle size distribution showed a monomodal distribution. The maximum was observed at approximately 4 µm.
- The median particle size L50 of the test item deduced from the particle size distributions was 3.6 µm.
- The particle size L10 of the test item deduced from the particle size distributions was 1.5 µm.
- The particle size L90 of the test item deduced from the particle size distributions was 7.4 µm.
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