Centrifuge selection is a process that takes into account multiple factors. Several key factors need to be considered when selecting a centrifuge to ensure that the selected equipment can meet the needs of specific applications and achieve optimal performance. This article introduces several key factors that need to be considered when selecting a centrifuge (for reference only).
Speed
Speed range:
Centrifuges are divided into low-speed centrifuges (≤6000rpm/min), high-speed centrifuges (≤25000rpm/min) and ultra-high-speed centrifuges (≥30000rpm/min) according to the speed. Each centrifuge has a rated speed, but the speed will vary depending on the type of rotor and the size of the sample. The speed of the selected centrifuge should be higher than the target speed.
Application requirements:
Different speeds are suitable for separation requirements of different particle sizes. For example, when the particle size of the material is between 1 micron and 50 microns, a low-speed centrifuge can be used; when separating various proteins, DNA, RNA and other components with a diameter of 0.002~0.1 microns, an ultra-high-speed centrifuge is required.
Separation performance
Separation effect:
Including separation effect, washing effect, processing capacity, degree of automation, etc. The separation effect is closely related to the properties of the material (such as viscosity, density, solid-liquid ratio, etc.), and it is difficult to determine accurately, but the separation coefficient is an important factor affecting the separation effect. With its advanced processing capacity and high degree of automation, this state-of-the-art machine guarantees superior separation results. The effectiveness of the separation also depends on the material’s viscosity, density, and solid-liquid ratio, as well as the important separation coefficient.
Washing effect:
The washing effect has a lot to do with the aperture, arrangement position and structure of the washing tube. Some materials require multiple washings of the filter cake with washing liquid to meet the requirements. -The precise washing performance and efficient filtering of this product’s specially designed washing tube makes it optimal for eliminating unwanted materials, with multiple washings and maximum results every time.
Processing capacity:
The processing capacity of the centrifuge is related to the physical and chemical properties of the material and the separation requirements, and is generally estimated by the number of cycles per hour and the mass of the filter cake in a single operation. Increase efficiency and quality control with the latest centrifuge technology. By taking into account the material properties and separation requirements, you can accurately estimate processing capacity in terms of cycles per hour and filter cake mass.
Material characteristics
Corrosiveness:
The materials separated by the centrifuge are generally corrosive to a certain extent. The materials in contact with the materials must meet the requirements of corrosion resistance to ensure safe use. Flammability and explosiveness: If the material contains flammable and explosive substances such as benzene, toluene, and petroleum ether, the centrifuge should have explosion-proof performance and take corresponding explosion-proof measures.
Other characteristics:
including the volatility of the material, the recovery rate, the particle size and hardness of the solid phase material, the density, viscosity, and surface tension of the liquid phase material, etc. These factors will affect the selection of the centrifuge. Knowledgeable decisions start with understanding the affecting factors. These include the volatility, recovery rate, particle size and hardness of the material, as well as the density, viscosity, and surface tension of the liquid. Accurate selection of the centrifuge is imperative for optimal performance.
Temperature and Capacity
Temperature:
Some samples (such as proteins, cells, etc.) will be destroyed in high temperature environments. At this time, you need to choose a refrigerated centrifuge and ensure that it has a rated temperature range. Equip your lab with a refrigerated centrifuge to keep your protein samples safe in extreme temperatures. With a wide range of temperature settings, you can trust that your precious samples will stay intact during experiments.
Capacity:
The total capacity of the centrifuge is determined based on the number of sample tubes that need to be centrifuged each time and the capacity of each sample tube. The total capacity should match the workload. Professional and efficient, this centrifuge can handle your entire workload with ease. Its total capacity is calculated by the number of sample tubes it can centrifuge at one time and the capacity of each individual tube.
Rotor type
Horizontal rotor:
The basket is horizontal during operation, and the sample will be precipitated and concentrated at the bottom of the centrifuge tube.
Angle rotor:
The centrifuge container is at a fixed angle to the shaft, and the sample will be precipitated and concentrated at the bottom of the centrifuge tube and the side wall near the bottom. Special rotor: such as large-capacity basket, ELISA plate rotor, slide rotor, etc., can be selected according to specific experimental needs.
In summary, the selection of centrifuge requires comprehensive consideration of multiple factors such as speed, separation performance, material characteristics, temperature and capacity, rotor type, control system and ease of operation to ensure that the selected centrifuge can meet actual needs and operate stably in the long term.