ThelECPR-6000 We took the best portable refrigerated centrifuge to be produced in the last 20 years (the I EC PR-2) and made it even better. That's confidence! We added a flexible drive shaft to eliminate critical sample balancing. A variable braking system to minimize the danger of resuspension. A new optional CF-6 Zonal Rotor to achieve ultracentrifuge performance at 6000 rpm. Automatic programmed operation to reduce the possibility of operator error and assure accurate experimental repeatability. We designed the PR-6000 to accept most PR-2, PR-6 and PR-J accessories. For complete facts call (800) 225-8856, toll free. Or write Damon/I EC Division, 300 Second Avenue, Needham Heights, Massachusetts 02194. Or better yet, see your local I EC dealer. (g) DAMON/IEC DIVISION
ThelECPR-6000. It's something to think about. CIRCLE 5 1 O N READER SERVICE CARD
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ANALYTICAL CHEMISTRY, VOL. 44, NO. 11, SEPTEMBER 1972
