Equipped with the novel Aero dry
dispersion unit, the new Mastersizer 3000 particle size analyzer from Malvern
Instruments now extends dry measurement to the widest possible range of sample
types. The design of the Aero reflects state-of-the-art dry powder dispersion
knowledge and enables users to measure materials from cement to coffee,
cohesive minerals to fragile pharmaceuticals, from 0.1 micron up to 3.5 mm in
the dry state. Rapid and efficient, this new dispersion unit is supported by
the fastest data acquisition rates available. Dry measurements become stable
more quickly, and even challenging samples with very wide size distributions
are measured accurately.
Dry dispersion of powders is a fast,
intuitively appealing and environmentally neutral (no requirement for the
disposal of liquid dispersants) approach to sample preparation for laser
diffraction particle sizing. However, its application to fragile, friable
particles is constrained by the need to apply enough energy for dispersion
without breaking or milling the sample.
To accommodate this, Aero has been
designed from the ground up, taking account of the latest dry powder dispersion
theory. The modular dispersion venturi system means that the user can easily
select the most appropriate dispersion mechanism for their samples. The
standard venturi supplied with the Aero is suitable for a very wide range of
samples, dispersing even moderately cohesive materials while maintaining the
integrity of fragile particles. An optional venturi, which disperses the sample
with a direct impaction mechanism, can be used for more aggressive break up of
agglomerates and highly cohesive materials, when measuring metal powders or
cement for example.
Sensitive pressure control to within +/-0.1
bar across the range 0.1 to 4 bar, allows precise tailoring of energy input to
meet diverse sample requirements. The smooth and efficient sample feed means
you can rely on the measurements to be robust. There are different feed trays
and hoppers to accommodate various sample sizes, while an enclosed cell ensures
bias-free measurement and minimizes user exposure.
The very rapid (10 KHz) data
acquisition rate of the Mastersizer 3000 delivers accurate measurement, even at
fast sample feed rates. All the parameters controlling dry powder measurement -
sample feed rate, dispersion and system cleaning - are fully controlled through
the software via the system manager interface. Real-time feedback helps
streamline method development and routine measurement alike.
Find
out how the new Mastersizer 3000 can help you to more convenient, reliable
particle characterization, whatever your applications.
www.malvern.com/ms3000
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