Analysis of the classification and use of refrigerated centrifuges

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A centrifuge is a special instrument that separates and precipitates a mixture (containing solids) by centrifugal force. Commonly used electric centrifuges in the laboratory include low-speed, high-speed centrifuges and low-speed, high-speed refrigerated centrifuges, as well as overspeed analysis and preparation of dual-purpose refrigerated centrifuges.

1.1   Refrigerated centrifuge classification

Low speed refrigerated centrifuge  
The rotation speed is generally not more than 4000 rpm, and the maximum capacity is 2-4L. It is the most commonly used in the laboratory for the extraction of biological macromolecules and sediments. The rotor is mostly made of aluminum alloy, flat and angled. The centrifuge tube has various types of hard glass, polyethylene hard plastic and stainless steel tube. The centrifuge is equipped with a drive motor, timer, adjuster (speed indication) and refrigeration system (temperature adjustable range -20-+40 °C), which can be changed according to the needs of centrifugal materials. .  
<br> speed refrigerated centrifuge speed up to 20000rpm above, except with properties and structure of a low-speed refrigerated centrifuge, the angle-type high-speed centrifuge rotor used are made of titanium and aluminum alloys. The centrifuge tube is a polyethylene hard plastic product with a cover. Such centrifuges are often used to collect microorganisms, cell debris, cells, large organelles, sulfate precipitates, and immunoprecipitates.

1.2   Precautions for use

(1) Usually, the centrifuge will have a registration form. Please register the user, the turntable, the speed and time before use.  
(2) The centrifuge tube must be well balanced. Pay attention to the position balance when placing the centrifuge. Never exceed the maximum speed of the centrifuge or centrifuge.  
(3) Be sure to leave the centrifuge after reaching the preset speed; if there is any abnormality, stop immediately.  
(4) Normally, you can hear the sound to see if the centrifugal condition is normal, and you can also pay attention to the vibration of the centrifuge.  
(5) After using a sample of high salt solution such as ammonium sulfate, be sure to wash the centrifuge and clean the centrifuge.  
(6) Ultra-high speed centrifuges are extremely complex and complex, requiring additional specialized training.

Double Convex Lens

Double-Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double-Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of industries or applications.

UV Fused Silica or Calcium Fluoride (CaF2) substrates are also available for additional performance in the Ultraviolet (UV) or Infrared (IR) spectrums. UF Fused Silica Double-Convex Lenses are ideal for close conjugate imaging systems utilizing Ultraviolet (UV) illumination. Calcium Fluoride (CaF2) offers a very wide transmission range of 350nm - 7μm.

Double-Convex (DCX) Lenses have two outward curved surfaces, a positive focal length and are useful for 1:1 imaging and in multi-element systems.
Worldhawk can supply high precision Plano Convex Lens, Double Convex Lens , Plano Concave Lens, Double Concave Lens, Meniscus Lens , Achromatic Lens and Aspheric Lens.

Optical glass lenses have a wide variety of applications. Germanium (Ge), Silicon (Si), or Zinc Selenide (ZnSe) lenses are ideal for transmitting the Infrared (IR) spectrum, while Fused Silica is well suited for the Ultraviolet (UV).

Optical Lenses are optical components designed to focus or diverge light. Optical Lenses, which may consist of a single or multiple elements, are used in a wide variety of applications from microscopy to laser processing.


spherical 1

spherical 2

Glass Convex Lens,Double Convex Lens,Glass Double Convex Lens,Symmetric Double Convex Lens

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