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Section 2 – Operation
Section 2 – Operation
General
The Flodex employs technology developed by Dr. Alberto Gioia
of Dow/Gruppo-LePetit, S.P.A. Milan, Italy, to determine a
repeatable flowability index over an arbitrary scale of 4 - 40. This
reliable index of powder flowability is used as a specification for
raw materials utilized in formulating oral pharmaceutical dosage
forms.
The Flodex presents a simple technique for the repeatable
determination of power flow characteristics. This one simple test
takes into account the numerous parameters that affect powder
flowability such as particle size and shape, "fines", unit surface,
actual and bulk density, porosity, settling, and electrostatic
charge. Because of its simplicity, the Flodex can be
satisfactorily operated by non-technically trained personnel.
The Flodex determination of intrinsic flowability is based upon
the ability of powder to fall freely through a hole in a disk. The
flowability index is given as the millimeter diameter of the
smallest hole the powder falls freely through in three successive
tries.
Flodex Operation Manual—21-101-000 Rev. E—18 June 2019
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