Analyze powder flow properties and powder behaviour
Unique measurement principle for easy powder fluidity data accumulation and standardization
Fully automated test programs and data analysis
Unparalleled repeatability using conditioning mode
Samples from 10 ml to 160 ml, with an additional 1ml Shear Cell option
The Freeman FT4 was designed with one purpose in mind: to characterize the rheology of powders, or powder flow properties. This is still the primary function, but the instrument, accessories and methodologies have been continuously developed to the point where the FT4 is now considered a universal powder flow tester.
The FT4 powder tester is unique in many ways. Below are some critical features for assessing industrial value:
The ability to simulate powder processing conditions, by testing samples in a consolidated, moderately stressed, aerated or fluidized state
The application of multi-faceted powder characterization to assess dynamic powder flow, bulk, and shear properties to construct the most comprehensive understanding of how a powder behaves
Unparalleled sensitivity, enabling the differentiation of powders that other testers classify as identical
Freeman Technology, developers of the industry-leading FT4 powder rheometer, became part of the Micromeritics family in 2018. In 2025, Micromeritics and Freeman joined Malvern Panalytical, bringing powder flow expertise into the wider materials characterization portfolio.
Powder rheometer methodologies
The FT4 is a truly universal powder flow tester offering four categories of methodologies: Bulk, Dynamic Flow, Shear (in accordance with ASTM D7981) and Process.