Resistance to Abrasion Test Machines

Product Code

FIA-0440 Efflux Index Apparatus (Flow Coefficient of Fine Aggregates), EN


EN 933-6

FIA-0440 Efflux Index (Flow Coefficient of Fine Aggregates) Apparatus is used to obtain information about the shape and the angularity of grains of fine aggregates.

The flow coefficient of an aggregate is the time, expressed in seconds, for a specified volume of aggregate to flow through a given opening, under specified conditions using a standard apparatus.

Efflux Index (Flow Coefficient of Fine Aggregates) Apparatus  consist of two funnels with different opening, cylindrical hopper, metal stand with a shutter and metal  container.


150x180x410 mm

Weight (approx.)

5 kg


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