In short, you can take real measurements on real samples.
| Perform Zeta
Potential measurements automatically, in minutes instead of
hours
The ESA-9800 measures the electrokinetic properties of a
particle by an electroacoustic method. A high frequency electric
field is applied to the dispersion and the particles move
electrophoretically in the applied field. If there is a density
difference between the particle and the liquid, this motion
will generate an alternating acoustic wave. The application
of the electric field and the resulting acoustic wave provides
a truly non-intrusive measurement and does not alter the properties
of the sample.
Microelectrophoresis and electrophoretic light scattering
methods, however, require extensively diluted samples, often
several orders of magnitude lower than the original concentration.
This requires users to characterize their particles in an
artificial state and the results obtained will not be a true
measure of the properties of the actual sample. Critical optical
alignment and extensive adjustments to locate the stationary
layers make microelectrophresis tedious while the large applied
DC electric fields may lead to pH drifts in the sample. With
ESA-9800, these problems do not exist.
Operation of the ESA-9800 is simple. Its computer-controlled,
fully-automated measurement process does not require a special
sample cell and samples can be taken from anywhere in the
manufacturing process or experiment, providing you with meaningful
data directly and in real time.
List of users
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Features
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High-viscosity
samples; concentrations up to 50 volume %
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Aqueous
and non-aqueous colloidal systems
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Hand-held
gold and stainless steel sensing probe for accuracy, repeatability,
and ease of use
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Minimum
volume 10ml, no maximum
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Effective
with particles down to molecules, up to 30 microns
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Ideal
for concentrated and/or opaque samples
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No
special vibration-free requirements
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Simultaneous
pH, conductivity, temperature, and electrokinetic signal measurement
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Measurements
on flowing, stirred, or still dispersions
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Windows-based
software with powerful data management
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DSP-based
hardware
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On-line,
real-time measurements and on-screen plotting
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Easily
cleaned, disposable, teflon titration chamber
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On-site
installation and training
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12-month
limited warranty with free consultation
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Using
a patented method called Electrokinetic Sonic Amplitude, the ESA-9800
System achieves remarkable electrokinetic measurement results while
eliminating the severe limitations and restrictions of the traditional
microelectrophoresis technique. With ESA, particle mobility and
Zeta Potential can be measured simultaneously with pH, conductivity,
and temperature. Samples can even be titrated during the measurement.