Product News: Test & Measuring Instruments

Particle Size Analyzer handles friable dry powders.

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Press Release Summary:

November 11, 2011 - Equipped with Aero dry dispersion unit, Mastersizer 3000 can measure materials from cement to coffee, cohesive minerals to fragile pharmaceuticals, from 0.1 micron to 3.5 mm in dry state. Modular dispersion venturi system lets user select appropriate dispersion mechanism for samples and maintains integrity of fragile particles. Optional venturi, which disperses sample with direct impaction mechanism, can be used for aggressive break up of agglomerates and cohesive materials.

Malvern Instruments Ltd

Enigma Business Park, Grovewood Road, Malvern Worcestershire, WR14 1XZ, United Kingdom

Original Press Release

New Mastersizer 3000 Measures the Particle Size of Even Friable Dry Powders

Press release date: November 10, 2011

Driving diffraction's dry powder dispersion...

Malvern, UK: 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

Malvern, Malvern Instruments and Mastersizer are registered trademarks of Malvern Instruments Ltd

About Malvern Instruments Malvern Instruments is a market leader in measuring performance controlling material properties. These include particle size, particle shape, zeta potential, molecular weight, size and conformation, rheological properties and chemical identification. Malvern delivers the systems, support and expertise that ensure the analytical integrity and productivity needed to drive research, development and manufacturing.

Malvern's measurement solutions for scientists, technologists and engineers advance continually through customer collaboration. Complementary materials characterization systems deliver inter-related measurements that reflect the complexities of particulates and disperse systems, nanomaterials and macromolecules. Combining intelligently implemented technologies with in-depth industry applications knowledge and support, Malvern provides customers with the competitive advantage they demand.

Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, China, Japan and Korea, a joint venture in India, a global distributor network and applications laboratories around the world. www.malvern.com

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