The Cylinder Attachment provides a simple and repeatable technique
for the determination of powder flow characteristics.
As such it takes into account most of the physical characteristics
affecting flowability, such as particle size, shape, fines, unit
surface, actual and bulk density, porosity, settling, and electrostatic
charge, without a direct quantitative measurement of any
of these parameters.
The determination of Intrinsic Flowability is based upon the ability
of a powder to fall freely through a hole in a plate. The results
are expressed in terms of a Flowability Index given as the diameter
(in mm) of the smallest hole the powder falls through freely
on three successive attempts.
For new formulations, it is recommended to start with the 18
mm disk. Once the disk is in position and with the shutter in the
closed position, a 50 gram sample is introduced into the test
cylinder using the funnel provided for this purpose.
After waiting for approx. 30 seconds to allow for any possible
formulation of flocculi, the shutter is opened. The test is positive
if the powder flows through the hole leaving a residue in the
form of an upside-down truncated cone. A powder that flocculates
in bulk will, on the other hand, fall abruptly forming a
cylindrical cavity.
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Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only 
