Key Benefits
- No dilution needed, measure samples as is.
- Wide particle size range.
- Small sample volume.
- No
particle size calibration required.
- Measures particle size even for extreme
cases of conductivity,
e.g. Portland cement.
- Works even with conducting particles.
-
Particle size measurement does not require charged particles.
- Works with mixtures of dissimilar materials, e.g.
alumina / zirconia
ceramic slip.
- Measures particle size in polymer solutions with extremely high
macroscopic viscosity.
- Inexpensive.
- Portable.
|
|
Principles
Particle
Size Measurement
Sound pulses are transmitted through the sample. The attenuation of these
pulses is measured over a wide range of ultrasonic frequencies. The
particle size is
deduced from the measured spectra using software which incorporates a detailed knowledge
of the physical basis of acoustic attenuation in concentrated polydisperse systems.
Zeta Potential Measurement
The double layer is disturbed by an ultrasonic wave. The displacement of
the ionic cloud with respect to the surface creates a dipole moment. The sum of
these dipole moments over many particles creates an electrical field which is sensed by a
receiving antenna immersed in the sample.
|
