Evolution Powder Tester - Measurement of Powder Flowability

uniaxial powder tester evolution

sample cup and weight

Evolution Powder Tester and Measurement Cell and
Weight for Time-Consolidation off the instrument

Evolution Powder Tester Flyer

The Evolution Powder Tester is an economical and easy-to-use powder flow tester that measures the unconfined yield strength of a powdered material directly. Operates standalone with touchscreen or with a PC.

Evolution Powder Tester Advantages:
Measure directly the powder flowability of a compressed sample
At a fraction of the cost of competitive instruments
Easy time consolidation measurement of multiple samples
Time consolidation also at high temperatures possible

Working Principle: The powder is filled into the measurement cup of the EPT. The sample cup is placed into the instrument and is automatically compressed to a given value (major consolidation stress). In a second step the instrument pushes the sample cake out of the cup and slowly increases pressure automatically until breakage of the powder cake. The maximum pressure reached is the unconfined yield strength. Alternatively several sample cups can be stored under load with weights at ambient condition or in a climate chamber. Afterwards they are placed in the EPT instrument and powder cake strength is measured again automatically.

The Benefits of Powder Flow Measurement:

  • Maintain flow out of hoppers, bins and storage containers
  • Predict caking, bridging & non.uniform flow during manufacturing process.
  • Evaluate ingredient suppliers for the choice of suppliers and quality components
  • Improve Quality & consistency by measuring the components of a products formulation
  • Reduce costs & increase production speed of powder processing, blending & tableting

Technical Data:

Instrument size: 8 x 11 x 38 cm

Sample size: 5 or 30 ccm

Stress Range: 0 to 1000 KPa

Analysis Time: 2 minutes

Major Consolidation Stress
Unconfined Yield Strength
Flow Function
Flow Index
Compression Curve
Powder density depending on load
Time Consolidation


unconfined yield strength evolution

Measurement of unconfined yield strength

climate chamber

Time Consolidation of 3 samples in a climate chamber