The laboratory centrifuge is an essential piece of equipment in many scientific fields. From molecular biology to medicine, and even the food industry, it allows for the separation of mixture components based on their density. However, its use cannot be improvised: improper handling can compromise your results, damage the device, or endanger users. In this article, discover how to use a laboratory centrifuge optimally, step by step.
Why use a laboratory centrifuge?
The purpose of a laboratory centrifuge is to separate substances in a mixture according to their density through the action of centrifugal force. This notably allows you to:
- Separate cells and liquids in medical analyses.
- Purify macromolecules (DNA, proteins, viruses).
- Extract organic or aqueous phases in chemistry.
- Clarify suspensions or remove cellular debris.
Preparing your laboratory centrifuge
1. Inspection before use
Before using a laboratory centrifuge, verify that:
- The rotor is clean, free of cracks or chemical residues.
- The chamber is free of dust or splashes.
- The tubes are compatible with the model and in good condition.
2. Balancing samples
This is the crucial step. Incorrect mass distribution can damage the rotor or lead to a breakdown.
- Always use identical tubes, filled to equal volumes.
- Place the tubes in perfect symmetry relative to the rotor axis.
Safe operation also begins with choosing equipment adapted to the protocols performed and regularly checked. Different laboratory centrifuges do not all have the same capacities, maximum speeds, or safety systems.
3. Setting parameters
Settings vary according to the type of sample:
- Speed (in revolutions per minute, RPM, or relative centrifugal force, RCF)
- Centrifugation time
- Temperature (for refrigerated centrifuges)
How to use a laboratory centrifuge safely?
1. Loading
Insert the tubes into the rotor cavities carefully. Ensure the lid is properly locked before starting the device.
2. Starting centrifugation
Press the start button, then stay nearby for the first few seconds. Abnormal vibration or noise should alert you immediately.
3. End of cycle
Wait for the rotor to come to a complete stop before opening the lid. Never attempt to stop it manually.
Routine maintenance of the laboratory centrifuge
- Clean the rotor after each use with a soft cloth and a non-abrasive detergent.
- Dry the compartments completely before closing the centrifuge.
- Schedule a complete annual maintenance.
Errors to avoid
- Using cracked or incompatible tubes.
- Imbalancing loads or positioning tubes incorrectly.
- Forgetting to lock the lid.
- Using the device with volatile substances without precautions.
Rewake: an economical and reliable solution for your centrifugation equipment
At Rewake, we rigorously recondition every laboratory centrifuge. Each device is:
- Tested according to current safety and performance standards.
- Cleaned, calibrated, and verified by specialized technicians.
- Guaranteed for immediate and long-lasting use.
Still hesitating? Discover our detailed article: how to choose your centrifuge.
Practical applications of the laboratory centrifuge
In a modern laboratory, the laboratory centrifuge is used in a wide variety of contexts. In biology, it is used to separate blood components (plasma, red blood cells, white blood cells), to concentrate cells, or to purify DNA and RNA. In analytical chemistry, it allows for the isolation of solid particles after a reaction. In the food industry, it helps to separate liquid phases from ingredients or to test the stability of certain products.
It is therefore far from limited to academic or hospital use. Many industrial laboratories use it daily for their quality control, formulation, or research and development processes. This is why understanding proper operating procedures becomes essential, regardless of your specialty.
Compliance with standards and laboratory safety
The use of a laboratory centrifuge also implies compliance with certain standards. First, it is crucial to verify that the equipment complies with CE directives and applicable ISO standards (e.g., ISO 61010 for electrical laboratory devices). These certifications ensure optimal operational safety, both for the user and the integrity of the samples.
Regarding safety, certain reflexes should become systematic: always balance loads, verify that the lid is correctly locked, and never open the device before it has come to a complete stop. Furthermore, wearing gloves, goggles, and a lab coat is recommended, particularly when processing biological or chemical samples that pose a risk.
Integration into laboratory protocols
A laboratory centrifuge is never used in isolation: it is part of a larger operational workflow. It is often preceded by a pipetting or sample preparation step, and followed by analysis on a spectrophotometer, plate reader, or microscope. For this reason, it must be positioned in a practical environment, close to other instruments, without obstructing movement on the bench.
Good organization not only streamlines handling but also limits the risks of cross-contamination or dosage errors. Also, consider providing a dedicated space for centrifugation accessories: rotors, adapters, spare tubes, etc.
Recommendations for investing in your equipment
Finally, if you are equipping your laboratory, or replacing an old machine, it is essential to adopt a long-term view. Rather than aiming only for price, consider the durability of the device, the availability of spare parts, and the quality of after-sales service.
At Rewake, each refurbished laboratory centrifuge is rigorously tested, inspected, and calibrated to offer an excellent level of performance at a lower cost. You benefit from reliable equipment, accompanied by a warranty, while adopting an eco-responsible approach.
Mastering the use of a laboratory centrifuge goes beyond its technical operation. It also involves understanding its role in a global process, respecting good safety practices, and optimizing its use in the daily life of the laboratory. To support this skill development, the Rewake team remains available to advise you on the model best suited to your activity.
