1-Used I.E.C. (International Equipment Company) Model “K” Centrifuge, S/N 71654104. With four position “spider” for holding vials/beakers, machine is single phase, 50-60 cycle, 120 volt electrics. Equipped with front control panel with speed timer controls. (Stock #8135D) http://www.wohlassociates.com/used-centrifuges/iec-model-k-centrifuge-single-phase.html