Centrifuges - Centrifuges general
Centrifuges separate laboratory samples by density differences. They are essential for sample preparation across various scientific fields.
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Centrifuges - Centrifuges general
Centrifuges separate laboratory samples by density differences. They are essential for sample preparation across various scientific fields.
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Guide and selection support
Centrifuges are used in laboratories to separate liquid mixtures into their constituents by rotation, for example, to sediment cells from blood samples. Selection is based on parameters such as rotor design, speed, cooling capability, and sample type. LabFinder assists in quickly identifying and choosing suitable centrifuges for a variety of laboratory applications.
Applications and Benefits
Centrifuges provide fast and efficient separation of heterogeneous mixtures, typically in liquid form, based on the density differences of their components. Common applications are found in medical diagnostics, molecular biology, and biochemical research, for example for the separation of plasma, serum, or cell fractions. They enable standardized sample preparation for subsequent analytical procedures.
Selection Criteria
Key criteria when selecting a centrifuge include maximum speed or relative centrifugal force (RCF), rotor size and type, and the sample holding capacity. Additional aspects include temperature control features (cooling) and safety properties to prevent biological contamination. The configuration is always determined by the intended application and the sample volumes to be processed.
Variants and Measurement Principles
Centrifuges primarily differ by rotor type (swing-out, fixed-angle, angle rotors) and by additional features such as cooling or ventilation. While the core function is separation by centrifugal force, different rotors and programs allow adaptation to specific sample types and separation goals. Variants range from small benchtop centrifuges to larger floor-standing units for higher sample volumes.
Calibration and Maintenance
Regular maintenance and functional checks are essential for reliable centrifuge performance. The rotor, bearings, and motor should be inspected for wear or damage. Calibration typically concerns speed and temperature control to ensure consistent, reproducible results. Manufacturer specifications provide guidance on intervals and procedures.
Limitations of Application
Centrifuges are designed to separate samples with different densities but lose efficiency with very small particles or those with similar densities. These devices are not suitable for explosive or corrosive liquids without special precautions. Proper sample loading is essential: improper loading or overfilling can cause malfunction or sample loss.
Search Terms and Related Terms
Relevant synonyms and search terms include: centrifuge, laboratory centrifuge, sample centrifuge, rotational centrifuge, centrifugation device, blood separation, plasma separation, laboratory equipment.
Also known as
centrifuge
laboratory centrifuge
centrifuge device
centrifuge machine
lab centrifuge
rotational centrifuge
blood centrifuge
sample centrifuge
centrifuge system
centrifuge laboratory device
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Frequently asked questions
How does a centrifuge work?
A centrifuge uses the centrifugal force generated by rotation to separate sample components of different densities, pushing heavier parts outward.
What types of centrifuges exist?
Centrifuges are mainly distinguished by rotor type, such as swing-out rotor, fixed-angle rotor, or angle rotor, as well as by special features like cooling or ventilation.
What criteria are important when selecting a centrifuge?
Key criteria are maximum speed/RCF, capacity, rotor type, available cooling options, and safety features, depending on the sample types and intended application.
What should be considered when using a centrifuge?
Samples must be loaded properly and balanced to prevent device errors. Temperature requirements and contamination risk also influence the choice and settings of the centrifuge.
What are the limitations of centrifuges?
Centrifuges are not suitable for separating very small particles with similar densities or for handling highly reactive, contaminating, or explosive substances without special equipment.
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