Aero M - 2 Pages

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Aero M

Catalog excerpts

AERO MRoutine particle size analysis for bulk dry powder samples The Aero M is designed to enable particle size and size distributions to be measured for bulk dry powder samples. Its modular design enables it to be configured to achieve robust particle size measurements in different applications and also ensures it is easy to maintain during routine use. Key benefits • Measures dry powder particle size distributions over a wide 0.1-1000pm range • Fast, reproducible measurements achieved without the need for liquid dispersants • Large sample masses can be measured, ensuring good sampling is achieved • Measurement reproducibility is maintained through software verification of the sample dispersion settings during measurements • Can be configured for different applications through the purchase of additional sample trays and powder hoppers • Abrasive samples can be measured through the use of ceramic venturi dispersers The use of dry powder dispersion for particle size and size distribution measurements is advantageous when measuring bulk materials, as a large mass of powder can be measured. This helps with the sampling of materials which are polydisperse, improving the result reproducibility and also making it more likely that out-of-specification materials will be detected. In addition, dry powder dispersion avoids the need for liquid dispersants, reducing the cost of measurement and increasing sample through-put. The Aero M disperses materials by accelerating dry powder particles through a venturi using compressed air. Dispersion is achieved through the shearing of agglomerates as well as through particle-particle collisions and particle-wall collisions. This ensures that agglomerated materials are dispersed to a primary particle size prior to measurement using the Mastersizer 3000E laser diffraction particle size analysis system. The energy associated with each dispersion mechanism can be controlled by the user by setting the air pressure drop across the venturi, enabling dispersion to be achieved without particle break-up. Malvern Malvern Instruments Worldwide Sales and services centres in over 65 countries www.malvern.com/contact ©2015 Malvern Instruments Limited MRK2213-01

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The sample feed rate through the Aero M is controlled using a vibrating powder feeder, which maintains a suitable sample concentration for measurement. This ensures that reproducible, rapid measurements can be made. A range of sample trays are available to aid the routine measurement of different powder types and sample masses. Malvern Malvern Instruments Limited Grovewood Road, Malvern, Worcestershire, UK, WR14 1XZ Tel +44 1684 892456 Fax +44 1684 892789 www.malvern.com Malvern Instruments Worldwide Sales and service centers in over 65 countries; for details...

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