Laboratory Centrifuges

Centrifuges carry out a centrifugation process which is a mechanism for separating mixtures (in particular, those composed of solids and liquids of different densities) through their exposure to a rotating force of a certain intensity. Centrifugal force causes objects to move away from the center as they rotate. It is the same used by a centrifuge, an instrument capable of generating centrifugal force, to separate mixtures in a laboratory.

Centrifugation works by pushing the densest components of the mixture towards the point furthest from the axis of rotation and leaving the least dense at the closest point. This technique is in daily use by chemists, biologists, and other scientists. In other words, centrifugation forces the mixture to undergo a rotary movement with a force of greater intensity than the gravitational force, causing the solid or particles of higher density to settle.

This is one of the principles on which density is based: all particles, because they have mass, are affected by any force. Centrifugation imposes, thanks to centrifugal acceleration, an effect similar to gravitational. The particles experience an acceleration that forces them to settle.

Centrifuge: rotor types

The two main types of rotors used in laboratory centrifuges are horizontal (also called tilting bucket) and fixed angle (or angled head).

What is the difference between these types of centrifuge rotors?

Horizontal rotors are so named because the buckets or racks that support the centrifuge tubes are suspended in a way that allows them to tilt upward in the horizontal plane when under the influence of a centrifugal field. Therefore, when operating the centrifuge, the particles settle along an unobstructed radial path, away from the center of rotation, and settle uniformly to the bottom of the tube or other container. The flat upper surface of the settled material simplifies the extraction of the supernatant from a loose granulate. Using multiple adapters, more than one tube type or size can be centrifuged, provided the load is properly balanced

What is a high speed centrifuge?

High-speed centrifugation is an irreplaceable tool for the isolation and characterization of multiple biological structures: from biomolecules, such as nucleic acids and proteins, to cellular organelles and viruses.

A centrifuge is a machine that spins a sample at high speed in order to generate a force –called centrifugal force– that separates the components of said sample, in order to analyze them. It is applicable to biology, pharmaceuticals, chemistry, among others.

It is extremely useful equipment for many types of clinical and research trials. The different types of centrifuge are adjusted to the different types of centrifugation: preparative centrifugation, which aims to isolate specific particles, and analytical centrifugation, with which physical properties such as sedimentation rate or molecular weight can be estimated.

The type of clinical procedure and the size of the laboratory are two of the most important factors when choosing a centrifuge.

Centrifugation: RPM vs. G Force

Centrifugation is one of the most important and widely applied research techniques in biochemistry, cell and molecular biology, and medicine. Today's research and clinical applications depend on the isolation of cells, subcellular organelles, and macromolecules, generally high throughput. A centrifuge uses centrifugal force (g-force) to isolate suspended particles from the surrounding medium either in batches or as a continuous flow.

What is the g-force?

The relative centrifugal force or g-force (RCF) is the amount of acceleration that will be applied to the sample. It depends on the revolutions per minute (rpm) and the radius of the rotor. It is relative to the force of gravity on Earth. A well-written protocol or method should indicate that when using a centrifuge it should be done using g-force instead of rpm because the size of the rotors will be different depending on the brand and therefore the g-force will be different.

Our Best Selling Laboratory Centrifuge:

YR134-2 Microhematocrit Centrifuge

Microcomputer control, brushless DC motor, stable operation, low noise. LED display, user-friendly interface, simple and convenient operations. Speed and RCF real-time conversation is convenient for operation.

Technical Presentation
Microcomputer control, brushless DC motor, stable operation, low noise.
LED display, user-friendly interface, simple and convenient operations.
Speed and RCF real-time conversation is convenient for operation.
It has self-locking device, overspeed safety device, overtemperature safety device.
Silastic comfort sealed ring according to GMP. Certified by the US FDA.

Types of laboratory centrifuges

Category of laboratory centrifuges:

Mini Centrifuges

They are used in medical, biochemical and other laboratories, where it is required to separate the examined material in a smaller volume by means of centrifugal force.

High Speed Centrifuges

They usually have vacuum systems to avoid heating the rotor due to friction with the air.


They exceed 50,000 rpm, so they have auxiliary systems to cool not only the rotor chamber where the samples are, but also the motor.

Low Speed Centrifuges

They have a variety of rotors, buckets and adapters, with safety and reliable technology, standard production process and excellent quality.


What is your ideal laboratory centrifuge?

There are countless models, so it is normal that you do not know which laboratory centrifuge to buy that suits your needs. At Kalstein, we test them to find what you're looking for.

Laboratory Centrifuge: Rotor Types

The centrifuge is a laboratory equipment that generates rotational movements, it has the objective of separating the components that constitute a substance. Today there is a diversity of centrifuges that have different objectives

¿What is a hematocrit centrifuge?

A centrifuge for hematocrit is a specialized equipment that allows to obtain the compact ratio of the volume of erythrocytes in the blood. In less than seven minutes, this machine allows erythrocytes to

¿What is a laboratory centrifuge?

Centrifugation is a mechanism for separating mixtures (in particular, those made up of solids and liquids of different densities) through their exposure to a rotating force of a certain intensity.

¿What is the function of a refrigerated centrifuge?

Refrigerated laboratory centrifuges are equipment used to achieve the sedimentation of the components in a homogeneous solution in their different densities at a predetermined temperature. For this, they have a special design that subjects the solutions to centrifugal rotation and acceleration at a high speed for a certain time, movements with which the solution is separated into two fractions, all this process occurring at an appropriate temperature, since said centrifuges They have a temperature control at which the sedimentation process takes place.

Laboratory Centrifuges on Offer

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