The commonly employed equipments for dispersing nanoparticles in the basefluid are magnetic stirrers, ultrasonic bath, homogenizers, high-shear mixers, and bead mills.
Source:
Ali, N., Teixeira, J. A., & Addali, A. (2018). A Review on Nanofluids: Fabrication, Stability, and Thermophysical Properties. Journal of Nanomaterials, 2018, 1–33. doi:10.1155/2018/6978130