Centrifuge Machine

The laboratory centrifuge machine is widely used in laboratories to separate liquids and fluids. The liquids are distinguished based on their densities. The best centrifuge machines are used in research facilities and laboratories to purify nucleic acid, proteins, cells and viruses.

How does a centrifuge machine work?

The lab centrifuge machine has a rotor that spins around an axis to generate a force that moves particles away from the rotation axis. Particles sediment when the centrifugal force is greater than the frictional force created by the particles. The mini centrifuge machine works in similar fashion, by using gravitational force to sink the high-density particles and leave the less dense particles floating. Similarly, the industrial centrifuge machine also works in similar fashion, by using differences in density to separate particles contained in a solution.

Types of Rotor Machines

The plasma centrifuge machine, like many other centrifuge machines, has 2 rotor designs. The fixed angle rotor holds tubes in fixed positions, at a 45 degree angle relative to the vertical rotation axis. The swinging bucket has tubes that swing from a perpendicular position. The sediment forms at the base of the tubes when they become parallel when the centrifuge is running.

How to choose a centrifuge machine

Purchasers of small centrifuge machines should consider the centrifuge speed. The number of revolutions per minute is an important metric in the classification of centrifuge machines. Slower machines have speeds of up to 7500 rounds per minute, while the larger machines, like the hematocrit centrifuge machine, have up to 20,000 rounds per minute.

Buyers should consider size when evaluating a centrifuge machine for sale. This categorization identifies the centrifuge machines as either floor standing models or benchtop models. Floor standing models, like the PRF centrifuge machine, are designed to achieve faster speeds. The benchtop models are smaller in size.