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Acoustic and electroacoustic techniques have
significant disadvantages when they used separately. There is one
way to eliminate these disadvantages. Such an optimum acoustic
based technique should combine both acoustic and electroacoustic
spectroscopy together. Acoustic & Electroacoustic
Spectrometer DT-1200 is such an instrument.
Measuring chamber of DT-1200 contains the both
acoustic and electroacoustic sensors. As a result this instrument
is capable to measure attenuation spectra (see Acoustic Spectrometer for Particle Size DT-100 ) as well as Colloid
Vibration Current (see ElectroAcoustic Zeta Potential Probe DT-300 )
This instrument performs acoustic and
electroacoustic measurements separately and independently. At the
same time, interpretation software is quite different comparing
to the individual spectrometers. This software provides links
between acoustics and electroacoustics.
Calculation of
Zeta Potential from CVI
requires information about particle size distribution, acoustic
impedance and sound attenuation. ElectroAcoustic Zeta Potential Probe DT-300 assumes that particle
size is either a’priori known or very small (<300 nm) or can be
estimated from the CVI phase.
The problem of the
particle size correction can
be easily resolved when acoustic and electroacoustic
spectrometers are combined together. The acoustic spectrometer
provides in this case required information about particle size
and acoustic properties of the system. This correction is
implemented into the DT-1200 software.
The
DT-1200 Acoustic & Electroacoustic Spectrometer is much less expensive than the sum of the
prices of the DT-100 and DT-300.
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