Shear Cell and Wall Friction Kits can be attached to the FT4 to determine shear properties of a powder, including Unconfined Yield Strength and Flow Function, and the Wall Friction Angle associated with a given material of constructions (in accordance with ASTM D7891). Shear and wall friction properties can be used to determine critical hopper geometries using the Hopper Design function of the FT4 Data Analysis software.
