Muhlenberg college

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We have two rotors for the Sorval RC6 centrifuge – the SS34 and the SLA-1500.

1. 1. Which rotor is capable of reaching higher speeds/g-forces?

1. a. SS-34
2. b. SLA-1500
2. 2. Which rotor is capable of holding larger tubes?
1. a. SS-34
2. b. SLA-1500
4. 3. Any tube that fits in the rotor is okay for centrifuging.
   
   
5. True
6. False
8. 4. In order to ensure a rotor is properly installed into the instrument you must:
   
   
9. a. Place it on the spindle such that the rotor pins and spindle pegs/pins are staggered
10. b. Tighten the lid on the rotor
11. c. Check for gaps between the lid and the rotor
12. d. Gently pull “up” on the rotor after the lid is tightened to ensure there is no movement or give
13. e. All of the above
15. 5. In order to balance your tubes for centrifugation you should:
    
    
16. a. Not worry about it – the centrifuge will “catch” the imbalance and stop the run
    b. Pour the liquid into the tubes to approximately the same height by eye.
    c. Use a scale and add or remove liquid to make the tubes the same mass, within 0.1g
    d. None of the above
18. 6. If a tube leaks in the centrifuge, you should:
    
    
19. a. Not worry about it
    b. Identify the leaking tube and throw it away
    c. Clean up the leak with soap and water
    d. All of the above
    e. B and C are correct