Aero S and Aero M with Funnel sample feeder - Rapid QC measurements for bulk powder samples0 pages

AERO S AND AERO M WITH
FUNNEL SAMPLE FEEDER
Rapid QC measurements for bulk powder samples

The Funnel Sample Feeder is designed to help users achieve rapid, reproducible bulk dry
powder particle size measurements by allowing samples to be added directly to the Aero
S and Aero M dry powder dispersion units without opening the dispersion unit lid. This
speeds up and simplifies the process of introducing samples for analysis, decreasing the
time required to obtain results. Samples of up to 15g can be loaded directly via the
feeder, enabling quick and consistent measurements of bulk powders to be achieved as
part of routine product quality control testing.

Key benefits

Measurement of dry powder
particle size distributions over a
wide 0.1 – 3500μm range†

Simple, effective sample
introduction and measurement
for bulk powders.

Decreased time-to-results,
supporting routine QC
operations

Analysis of large sample masses,
ensuring good sampling and
reproducible measurements

Software verification of sample
dispersion and measurement
settings, for assured method
control and standardization.

When measuring the particle size and size distribution of bulk materials, dry powder
dispersion is advantageous as it enables the analysis of a large mass of powder. This helps
when sampling materials which are polydisperse, improving result reproducibility and
assisting detection of out-of-specification materials. In addition, dry powder dispersion
eliminates the need for liquid dispersants, reducing the cost of measurement compared
to wet dispersion analysis.
The Aero S and Aero M units disperse dry powders by accelerating particles through a
venturi using compressed air. Dispersion is achieved through the shearing of
agglomerates as well as by 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 3000 or Mastersizer 3000E laser diffraction particle
size analysis system. The energy associated with each dispersion mechanism is userdefined and is controlled by setting the air pressure drop across the venturi, enabling
dispersion to be achieved without particle break-up.

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