A challenge central to the Powder Metallurgy (PM) process is achieving consistent and uniform products. A crucial step in reaching this goal, is ensuring powder blending sufficiently homogenizes a mix. A challenge to powder and parts producers is creating a process that both achieves homogeneity and operates efficiently. C-Therm’s ESP technology offers a window into the blender by measuring the thermal properties of powder during processing. Powder chemistry and density have a significant impact on the thermal properties and measuring thermal effusivity repeatedly throughout processing can indicate once a stable, homogenous blend has been achieved. The authors seek to establish the usability and accuracy of measuring effusivity by monitoring multiple blend conditions and comparing results to standard industry methods such as thief sampling.