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.
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.