An Improved Type of Electrically Driven High Speed Laboratory Centrifuge

A description is given of a simple angle centrifuge which utilizes a direct universal motor drive that is capable of spinning an 8‐inch rotor at 18,000 r.p.m. with an applied potential of 180 volts and at 12,500 r.p.m. with a potential of 115 volts. Specifications and operational data are given for rotors having diameters ranging from 7 to 10¼ inches and capacities ranging from 112 to 610 cc of fluid.