How to Use a Benchtop Centrifuge: A Beginner’s Guide

A benchtop centrifuge is a device used to quickly separate components of liquid mixtures. This process is called sedimentation, and it works by spinning the sample at high speeds inside a rotor. By doing this, heavier particles will settle to the bottom while lighter components remain suspended in the supernatant. This separation technique is commonly used for purifying biological samples such as proteins, nucleic acids, and cells.

Modern benchtop centrifuges come in a variety of sizes and capabilities. The smallest models are designed for small sample volumes while the larger ones can handle up to 4 liters or more. They can also accommodate different types of rotors depending on the experiment being performed.

For example, there are rotors designed for extracting cells and other biological materials, as well as those with adapters for microplates or tubes. Depending on the model, benchtop centrifuges can spin up to 30,000 g-force, which is more than enough to separate most samples quickly and efficiently.

The Basics in Using a Benchtop Centrifuge


Most  benchtop centrifuges are simple to operate and easy to maintain. However, it is important to take the time to read your specific user manual and understand how to use a benchtop centrifuge properly, as improper use can lead to safety hazards or inaccurate results. Here is a beginner’s guide on how to use a benchtop centrifuge.

  1. Prepare the centrifuge for use: Make sure your benchtop centrifuge is properly installed and securely fastened to a lab table or countertop before using it. Check that all parts are in good condition and secured correctly according to the manufacturer’s instructions.
  1. Select the appropriate rotor: Choose a rotor that is compatible with the benchtop centrifuge and the type of sample you will be working with. The rotor should also have a maximum speed that does not exceed the limits of your benchtop centrifuge. Make sure to read the safety information included in the user manual before selecting a rotor.
  1. Load samples into the rotor: Follow the manufacturer’s instructions for loading your samples into the rotor. Be sure to balance the centrifuge if necessary, and never overload it beyond its maximum capacity.
  1. Set speed and time: Select a suitable speed and run time for your sample type. Ensure that your settings do not exceed the limitations of the benchtop centrifuge or the rotor.
  1. Start the centrifuge: Press the start button and allow the centrifuge to reach its desired speed. If you are using a swinging bucket rotor, it is important to gently swing each sample into place before starting the machine.
  1. Shut off and unload samples: Once the run has finished, turn off the machine and remove the samples carefully. Follow any safety instructions provided by the manufacturer before unloading or disassembling the rotor.
  1. Finally, don’t forget to clean and maintain the centrifuge on a regular basis—it’s an important part of making sure the machine continues to work properly for years to come.

Using a benchtop centrifuge doesn’t have to be complicated or intimidating—with these easy tips and tricks, you can master the basics in no time. Get started today and see what your centrifuge can do!

Note: It is important to always follow safety protocols when working with any kind of laboratory equipment, and centrifuges are no exception. If you have any questions or concerns about using your benchtop centrifuge, be sure to consult the user manual or contact the manufacturer for advice.