Malvern Instruments (USA)
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is a leading supplier of analytical solutions for particle characterization
and rheological applications. Advanced measurement technologies are combined
with robust mechanical designs and comprehensive data handling and automation
software, to provide systems that are relevant across a wide range of industrial
and fundamental research applications.
Material characterization data such as size distribution, particle shape,
zeta potential, molecular weight, and bulk material properties, can be accurately
and reproducibly measured using instruments from the Malvern
range. Technologies used include laser diffraction, image analysis, laser Doppler
electrophoresis, static and dynamic light scattering, capillary rheometry and
strain controlled and stress controlled rheometry.
Operating from headquarters in the UK, Malvern
has an established network of subsidiary organisations, local offices and distributors
worldwide and provides the highest level of applications and technical support
to its customers wherever they are located.
A highly developed and continually expanding programme of web-based information,
education, training and support now plays a fundamental role in delivering on
commitment to share its expertise and experience with customers worldwide, and
to ensure that they realize the maximum value from their instruments. An extensive
library of technical documents, application notes, white papers and articles
is available for download from Malvern's
website; live, web-based particle characterization and rheology seminars
allow interaction with experts in these fields; and on-demand multimedia presentations
can be downloaded and experienced at the viewer¡¦s convenience.
Since the physical and optical properties of nano-sized particles are related
strongly to their size, there is a growing need for a reliable, accurate and
rapid means of particle size measurement and materials characterization in the
size range. The diversity of nanoparticles
and their applications means that they are likely to be presented in a variety
of formats and in concentrations ranging from the very dilute through to highly
concentrated suspensions or emulsions. Being able to measure these particles
in their native formats may be important. Dilution, for example, can disrupt
finely balanced systems and give a misleading picture of the true particle size.
The technique of dynamic light scattering (DLS) is ideally suited to the determination
of the size of particles in the nanometer
Malvern Zetasizer Nano series uses patented optics that provide exceptional
levels of sensitivity and enable the determination of particle size in samples
that contain very small particles and/or particles that are present at very
low concentrations. In addition, the Zetasizer
Nano¡¦s novel backscatter optics allow the measurement of samples
at much higher concentrations than is possible using conventional DLS instruments
where a 90¢X detection angle is the norm. The
Zetasizer Nano series also offers combined size and zeta potential measurement
in a single system allowing the generation of information important in determining
dispersion stability and understanding and controlling the behavior of nanoparticles
in dispersion. Malvern rheometers have applications in testing the bulk properties
of materials, for example to demonstrate whether or not materials are suitably
Properties that the Zetasizer
Nano can determine include:
- Particle size
- Dispersion stability
- Zeta potential
- Rheological properties
is a unique rheometer
designed for tomorrow's research and business needs across all industries and
application areas. Designed from the ground up it is the result of more than
four years intensive product development.
enables you to precisely analyze the rheological, or flow and deformation properties
of your materials:
- From liquids to solids.
- From processability to product performance
- From temperature to time dependence
- From simple viscosity to complex viscoelastic parameters.
Malvern are able to supply a comprehensive range of scientific equipment for the characterisation of particulate materials.