Question

- A clinical laboratory procedure requires that a sample be
centrifuged at 6000 x g for 10 minutes. What duration of time would
be needed to attain an equivalent force using another centrifuge
that can achieve a maximum force of 2600 x
*g*?

- What RCF would result from centrifuging a CSF sample at 5500 rpm if the centrifuge had a rotating radius of 200 mm?

Answer #1

Though the relation between time taken to produce the sample(t) and RCF of the machine totally depends on the sample itself, we assume time taken to produce the sample is inversely proportoinal to RCF, that is . So -

Time taken to produce the sample with 2600 RCF is .

The formula to transform RPM to RCF is -

. where is measured in cm. Putting the the given values in the equation we get- .

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