Solid State

Powder properties are measured from different aspects. The instrumentation may be similar in the Pharmaceutical and Food industry.

One measurement of great  importance is the Angle of Repose when building up a conical pile of it. The angle depends on some basic properties of the powder, like: particle size, inter-particle friction, aeration of the powder during the pile formation etc.

A standardised instrument has got a circular base of 100 mm diameter a funnel with an opening of 10 mm. The powder falling height is adjustable and method dependent.

The resulting cone height is read with a height micrometer.

The height  is easily translated to the Angle of repose.

FIA – Prototypverkstaden has constructed this instrument where the dropping angle of the powder can be measured.