Practical miniature centrifuges, complete with 8-place rotor, for small sample volumes. With microprocessor control, impulse key for quick spin, one-hand closing, lid catch and lock. Easy input of speed and time on the membrane keypad. Display of actual status during operation. Various tubes - also glass tubes - can be centrifuged without an adapter. Adapters for other blood collection systems on request. Model EBA 20 S is equipped with a frequency drive.