Our faculty requires new or slightly used ultracentrifuge rotors, pariticularly 50.3Ti and TY 65. We have a brand new zonal ultracentrifuge rotor 15 Ti (32,000 rpm) to trade. If you have any information please contact Dr. Kish Wasan University of British Columbia at (604) 822-3035 (fax) or at e-mail address Kwasan at unixg.ubc.ca Thanks