In the selection process of an appropriate centrifuge, a paramount factor to closely evaluate is its maximum speed.
Notably, there are two significant speed indicators in the field of centrifuges: RCF (Relative Centrifugal Force) and RPM (Revolutions Per Minute).
While these terminologies are commonly substituted for one another due to their relation to speed, they do represent disparate measurements. This article explains the difference between the two terms and why RCF is more relevant to centrifuges.
What are RCF and RPM?
The “RCF” denotes the term “Relative Centrifugal Force”, while “RPM” corresponds to “Revolutions Per Minute.” These represent distinct physical measurements, their relationship being primarily influenced by the centrifuge’s rotational speed and radius.
Relative centrifugal force (RCF)
Relative Centrifugal Force’ (RCF) refers to a critical unit frequently employed in the operation of a centrifuge, instrumental in quantifying the amount of centrifugal force exerted on a sample. Intrinsically tied to both the speed of the centrifuge and its radial extent, RCF plays an invaluable role across fields such as biology and chemistry.
In laboratory settings engaging these disciplines, various components within liquid mixtures—for instance, precipitated cells or particles—require separation for further analysis. This process is aptly undertaken using RCF through centrifugation procedures that offer requisite efficacy and precision.
Revolutions per minute (RPM)
Revolutions Per Minute (RPM) is a standard unit utilized to ascertain the rotational velocity of an object within a span of one minute. This unit is imperative in delineating the operational speed of mechanical equipment such as engines, motors, fans and their analogous devices.
RPM proffers pivotal informational insights concerning these devices’ performance metrics. The derivation of this crucial parameter entails quantifying the number of comprehensive revolutions executed by a particular shaft during a time duration encompassing sixty seconds.