Any lab or doctor’s office that deals with patient samples would be unable to process blood work without the all-important centrifuge. The most convenient product to purchase, however, is a combination centrifuge. Many of these centrifugal machines have 8 place fixed-angle or 6 place swing-out rotors, ZERO-RPM locking lids and digital time/speed programming capabilities for easy, efficient use. They also include important components like tube inserts/cushions, power adapters and/or tube sleeves.