25th October 2020

TESTER MEASURES POWDER CHARACTERISTICS

Freeman Technology has launched the Uniaxial Powder Tester (UPT) a standalone uniaxial tester for simple, sensitive and cost-efficient powder characterization.Developed in collaboration with the University of Edinburgh and a major industrial powder processor, the new tester delivers automated, highly repeatable measurement and provides a cost effective alternative to traditional powder testing techniques. It offers, the company claims, significant value to engineers and QC analysts working across a number of industries, from bulk solids handling to pharmaceuticals.

“Uniaxial powder testing is a simple and intuitive method that measures an intrinsic property of a bulk solid,” said Tim Freeman, managing director of Freeman Technology. “The UPT draws on our in-depth understanding of powders and the precision engineering that underpins the worldwide success of the FT4 Powder Rheometer. The result is a completely new, repeatable, versatile, low cost and robust powder tester for process development, trouble shooting and QC.”

The instrument measures unconfined yield strength (UYS), a parameter typically derived indirectly via biaxial shear cell analysis, which is widely used to assess and rank the flowability of powders. Uniaxial testing involves the construction of a consolidated powder column, which is then fractured through the application of a vertical stress to directly measure UYS. Fundamental to the successful implementation of the technique is the construction of a uniformly consolidated powder column, and subsequent removal of the containing sleeve with minimal disturbance of the compacted column.

“This new tester has a number of innovative features that are crucial to ensure reproducible measurement for a wide range of powders, including a unique and novel system for the application of double-ended compression” said Freeman. “Extensive in-house research has shown that the UPT can successfully measure and rank UYS compressibility and density of many industrially relevant powders, even those that are relatively free-flowing.”

The new instrument is available in either a manual or an advanced version. Both deliver the same data with the same high repeatability, while the advanced version also offers the advantage of increased automation and reduced operator input.

www.freemantech.co.uk/upt