Laboratory centrifuges Manufacturers online

Laboratory centrifuges are devices that rotate samples at high speed in order to separate the sample components based on their differences in density.

They are an indispensable instrument in biological, medical, chemical and pharmaceutical research.

Below you will find how they work, the different types of laboratory centrifuges, the areas in which they are used and safety aspects that should be taken into account:

How laboratory centrifuges work:

When rotating, the centrifuge generates a centrifugal force that acts outwards perpendicular to the axis of rotation.
This force causes heavier particles to be pushed outwards faster than lighter ones.

Types of laboratory centrifuges:

1. Microcentrifuge:
   For small sample volumes (0.2-2 ml), e.g. DNA samples.
2. Refrigerated centrifuge:
   Allows temperature control for sensitive samples.
3. Benchtop centrifuge:
   The standard device in medical laboratories.
4. Ultracentrifuge:
   Very high RCF (>100,000 g), e.g. for virus or macromolecule separation.
5. High-speed centrifuge:
   Intermediate stage, for larger sample volumes.
6. Oscillating bucket centrifuge:
   Prevents sediment clumping and has good separation efficiency.

Use of laboratory centrifuges:

1. Life sciences & medicine:
Separation of blood components e.g. plasma separation.
Cell fractionation: Isolation of cell organelles e.g. cell nucleus, mitochondria.
DNA/RNA purification.
Protein isolation.

2. Clinical diagnostics:
Blood sample analysis (serum/plasma).
Urine analysis.

3. Pharmaceutical industry:
Quality control of liquids.
Particle separation in the production of medicines.

4. Chemistry & environmental technology:
Phase separation.
Analysis of suspended solids.
Removal of solids from solvents.

Safety aspects when operating laboratory centrifuges:

• Check rotors regularly (material fatigue!)
• Uniform loading of the samples (balancing!)
• Always close the cover lid.
• Protective measures in the event of rotor failure, especially with ultracentrifuges.

Laboratory centrifuges are indispensable tools in modern laboratory work. Their ability to separate substances efficiently according to density makes them a key instrument in fields such as medicine, molecular biology, chemistry and pharmacy.
Overall, laboratory centrifuges make an indispensable contribution to quality control, diagnostics and research - making them an indispensable part of any analytical or life science laboratory.

Below you will find an overview of the most important criteria that you should pay attention to when purchasing laboratory centrifuges:

There are a number of technical, functional and economic aspects to consider when purchasing laboratory centrifuges. A well-considered selection is crucial to ensure efficiency, safety and longevity in laboratory operation.

• The first and most important step is to clarify what the centrifuge is to be used for.
• Different applications (e.g. blood samples, cell fractions, DNA purification, industrial preparations) require specific centrifuge types and rotors.
• The decision also depends on the sample volume and the desired separation efficiency. Depending on the application, you should choose between different types:
• Microcentrifuges for small volumes such as Eppendorf tubes.
• Benchtop centrifuges for general laboratory work.
• High-speed centrifuges for more complex biochemical separations.
• Ultracentrifuges for molecular biology applications with very high RCF.
• Refrigerated centrifuges for temperature-sensitive samples.
• It is important to check the technical performance data for suitability for the application. Important parameters are:
• Maximum speed (rpm): Indicates the maximum speed
• Maximum RCF (g-force): Decisive for cutting performance.
• Acceleration and braking time: Relevant for sensitive samples.
• Rotor types and capacities: Fixed-angle or swing-out rotors depending on separation requirements.
• A modular design with interchangeable rotors and adapters significantly increases flexibility. Make sure that the centrifuge supports different tube sizes and types (e.g. PCR tubes, Falcon tubes).
• A precise cooling function is essential for biological and pharmaceutical samples. The centrifuge should be able to cool down quickly to target temperatures, e.g. 4 °C, and offer reliable temperature stability during runtime.
• An intuitive control panel with digital controls, storable programs and safety displays improves handling. Modern appliances also offer touchscreens, USB interfaces or even network or app connections.
• Safety is particularly critical at high speeds. Pay attention to:
• Imbalance detection.
• Automatic rotor detection.
• Lid lock during operation.
• Emergency stop function.
• Shock and vibration-absorbing bearings.
• A robust appliance should be easy to maintain. Important are:
• Accessibility of wearing parts.
• Availability of replacement rotors.
• Technical support & maintenance contracts.
• Manufacturer certification and documentation, e.g. GLP/GMP.
• Centrifuges for professional use should comply with applicable standards:
• CE marking, ISO certifications, biological safety e.g. aerosol-tight rotors for infectious material.
• In addition to the purchase price, operating costs should also be taken into account.
• Investments in quality and durability pay off in the long term through reliability and less downtime.
• Pay attention to what is included in the basic package, e.g. rotors, adapters, lids, and whether additional accessories such as tube inserts or cooling units need to be ordered separately.

A professional centrifuge purchase requires a precise needs analysis, careful examination of the technical and safety-relevant features and consideration of maintenance and costs. If you want to work efficiently and safely in the long term, you should not base your decision solely on price, but also on quality, functionality and service.

Laboratory centrifuges can be purchased from various suppliers. Comprehensive information about manufacturers and suppliers of Laboratory centrifuges from all over the world can be found on Exportpages.