Centrifuge

Question 1

A centrifuge is used to ______ gravitational separation of substances

Answer 1

Accelerate

Question 2

Used to describe the force required to separate two phases.

Answer 2

Relative centrifugal force (RCF)

Question 3

What is the formula for RCF?

Answer 3

RCF=Krn2

Question 4

What is K ?

Answer 4

1.118 x 10 to the -5th

Question 5

What is r ?

Answer 5

radius

Question 6

What is n?

Answer 6

Speed of the rotor in rpm (rotation per minute)

Question 7

Increase time to centrifuge a specimen if using a small radius centrifuge (T/F)

Answer 7

True

Question 8

Increase the time to centrifuge the specimen when the Speed is increased (T/F)

Answer 8

False - decrease the time

Question 9

SST and PST will be spun using ____ RCF for a longer time to ensure all cells have been spun to the bottom

Answer 9

HIGH

Question 10

Urine will have a ____ RCF centrifugation to ensure cellular material is still intact

Answer 10

LOWER

Question 11

Controlled by potentiometer which changes the voltage supplied to the motor.

Answer 11

Speed

Question 12

Rotor head may be fixed at a ___degree angle or swing to a ____ degree angle

Answer 12

45 degree angle

90 degree angle

Question 13

If you can hear the tubes breaking, or unbalanced it is generally best to _____the centrifuge.

Answer 13

Turn off and allow to come to a complete stop

Question 14

The main hazard associated with centrifuge is ?

Answer 14

dispersion of aerosols when tube breaks

Question 15

What do you need to clean the centrifuge?

Answer 15

Non- corrosive disinfectant