(135° from the light source)
Backscattering is directly related to the photon
transport mean free path. Thus Backscattering
intensity depends on particle size and concentration.
MAIN
ADVANTAGES
Static Multiple Light
Scattering
Multiple light scattering is the
key optical method to
characterise concentrated
liquid dispersions without
dilution.
HOW IT WORKS ?
MLS consists of sending photons (NIR light source,
880nm) into the sample. These photons, after being
scattered many times by the particles (or droplets) in
the dispersion emerge from the sample and are detected by the 2 detectors of the Turbiscan™
reading head:
Transmission for non opaque samples
(0° from light source)
Backscattering for opaque samples
ACCESS TO STABILITY
This principle of measurement is used by the
Turbiscan™ in order to detect particle size change and/or local concentration change while the sample
is destabilising, this more accurately and faster than
the eye
Monitor size change versus time
Monitor local concentration
change versus time (with the
Turbiscan™ scanning reading head)
Measure Particle mean diameter
or concentration
Measure photon transport mean
free path l* or photon mean free path l