ultracentrifuges

/AH0 L T R AH0 S EH1 N T R AH0 F Y UW0 JH IH0 Z/
noun
  1. 1

    A high-speed centrifuge, especially one free from convection that is used to separate colloidal particles.

Source: https://en.wiktionary.org/wiki/ultracentrifuge, https://en.wiktionary.org/wiki/ultracentrifuges